M25P128 128 Mbit (Multilevel), Low Voltage, Serial Flash Memory With 50MHz SPI Bus Interface PRELIMINARY DATA Feature summary 128 Mbit of Flash Memory Page Program (up to 256 Bytes) in 2.5ms (typical) Sector Erase (2Mbit) Bulk Erase (128Mbit) 2.7 to 3.6V Single Supply Voltage SPI Bus Compatible Serial Interface 50MHz Clock Rate (maximum) Electronic Signature - JEDEC Standard Two-Byte Signature (2018h) More than 10000 Erase/Program Cycles per Sector More than 20-Year Data Retention Packages - ECOPACK(R) (RoHS compliant) January 2006 VDFPN8 (ME) 8x6mm (MLP8) SO16 (MF) 300 mils width Rev. 1 This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice. 1/41 www.st.com 1 Contents M25P128 Contents 1 Summary description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2 Signal description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.1 Serial data output (Q) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.2 Serial data input (D) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.3 Serial clock (C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.4 Chip Select (S) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.5 Hold (HOLD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.6 Write Protect (W) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3 SPI modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4 Operating features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 4.1 Page programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 4.2 Sector Erase and Bulk Erase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 4.3 Polling during a write, program or erase cycle . . . . . . . . . . . . . . . . . . . . . 10 4.4 Active power and standby power modes . . . . . . . . . . . . . . . . . . . . . . . . . 10 4.5 Status Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 4.6 Protection modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 4.7 Hold condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 5 Memory Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 6 Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 6.1 Write Enable (WREN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 6.2 Write Disable (WRDI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 6.3 Read Identification (RDID) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 6.4 Read Status Register (RDSR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 6.5 2/41 6.4.1 WIP bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 6.4.2 WEL bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 6.4.3 BP2, BP1, BP0 bits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 6.4.4 SRWD bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Write Status Register (WRSR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Rev. 1 M25P128 Contents 6.6 Read Data Bytes (READ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 6.7 Read Data Bytes at Higher Speed (FAST_READ) . . . . . . . . . . . . . . . . . . 24 6.8 Page Program (PP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 6.9 Sector Erase (SE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 6.10 Bulk Erase (BE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 7 Power-up and power-down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 8 Initial delivery state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 9 Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 10 DC and AC parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 11 Package mechanical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 12 Part numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 13 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Rev. 1 3/41 List of tables M25P128 List of tables Table 1. Table 2. Table 3. Table 4. Table 5. Table 6. Table 7. Table 8. Table 9. Table 10. Table 11. Table 12. Table 13. Table 14. Table 15. Table 16. Table 17. Table 18. 4/41 Signal Names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Protected Area Sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Memory Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Instruction Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Read Identification (RDID) Data-Out Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Status Register Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Protection Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Power-Up Timing and VWI Threshold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 AC Measurement Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Capacitance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 DC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 AC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 VDFPN8 (MLP8), 8-lead Very thin Dual Flat Package No lead, 8x6mm, Package Mechanical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 SO16 wide - 16 lead Plastic Small Outline, 300 mils body width . . . . . . . . . . . . . . . . . . . . 38 Ordering Information Scheme. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Document Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Rev. 1 M25P128 List of figures List of figures Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. Figure 9. Figure 10. Figure 11. Figure 12. Figure 13. Figure 14. Figure 15. Figure 16. Figure 17. Figure 18. Figure 19. Figure 20. Figure 21. Figure 22. Figure 23. Figure 24. Figure 25. Logic Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 VDFPN Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 SO Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Bus Master and Memory Devices on the SPI Bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 SPI Modes Supported. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Hold Condition Activation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Write Enable (WREN) Instruction Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Write Disable (WRDI) Instruction Sequence. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Read Identification (RDID) Instruction Sequence and Data-Out Sequence . . . . . . . . . . . . 18 Read Status Register (RDSR) Instruction Sequence and Data-Out Sequence . . . . . . . . . 20 Write Status Register (WRSR) Instruction Sequence. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Read Data Bytes (READ) Instruction Sequence and Data-Out Sequence. . . . . . . . . . . . . 23 Read Data Bytes at Higher Speed (FAST_READ) Instruction and Data-Out Sequence . . 24 Page Program (PP) Instruction Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Sector Erase (SE) Instruction Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Bulk Erase (BE) Instruction Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Power-up Timing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 AC Measurement I/O Waveform. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Serial Input Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Write Protect Setup and Hold Timing during WRSR when SRWD=1 . . . . . . . . . . . . . . . . . 35 Hold Timing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Output Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 VDFPN8 (MLP8), 8-lead Very thin Dual Flat Package No lead, 8x6mm, Package Outline 37 SO16 wide - 16 lead Plastic Small Outline, 300 mils body width . . . . . . . . . . . . . . . . . . . . 38 Rev. 1 5/41 Summary description 1 M25P128 Summary description The M25P128 is a multilevel 128Mbit (16Mbit x 8) Serial Flash Memory, with advanced write protection mechanisms, accessed by a high speed SPI-compatible bus. The memory can be programmed 1 to 256 bytes at a time, using the Page Program instruction. The memory is organized as 64 sectors, each containing 1024 pages. Each page is 256 bytes wide. Thus, the whole memory can be viewed as consisting of 65536 pages, or 16777216 bytes. The whole memory can be erased using the Bulk Erase instruction, or a sector at a time, using the Sector Erase instruction. In order to meet environmental requirements, ST offers these devices in ECOPACK(R) packages. ECOPACK(R) packages are Lead-free and RoHS compliant. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com. Figure 1. Logic Diagram VCC D Q C S M25P128 W HOLD VSS AI11313 Table 1. 6/41 Signal Names C Serial Clock D Serial Data Input Q Serial Data Output S Chip Select W Write Protect HOLD Hold VCC Supply Voltage VSS Ground Rev. 1 M25P128 Summary description Figure 2. VDFPN Connections M25P128 S Q W VSS 1 2 3 4 8 7 6 5 VCC HOLD C D AI11314 1. There is an exposed die paddle on the underside of the MLP8 package. This is pulled, internally, to VSS, and must not be allowed to be connected to any other voltage or signal line on the PCB. 2. See Package mechanical section for package dimensions, and how to identify pin-1. Figure 3. SO Connections M25P128 HOLD VCC DU DU DU DU S Q 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 C D DU DU DU DU VSS W AI11315 1. DU = Don't Use 2. See Package mechanical section for package dimensions, and how to identify pin-1. Rev. 1 7/41 Signal description 2 Signal description 2.1 Serial data output (Q) M25P128 This output signal is used to transfer data serially out of the device. Data is shifted out on the falling edge of Serial Clock (C). 2.2 Serial data input (D) This input signal is used to transfer data serially into the device. It receives instructions, addresses, and the data to be programmed. Values are latched on the rising edge of Serial Clock (C). 2.3 Serial clock (C) This input signal provides the timing of the serial interface. Instructions, addresses, or data present at Serial Data Input (D) are latched on the rising edge of Serial Clock (C). Data on Serial Data Output (Q) changes after the falling edge of Serial Clock (C). 2.4 Chip Select (S) When this input signal is High, the device is deselected and Serial Data Output (Q) is at high impedance. Unless an internal Program, Erase or Write Status Register cycle is in progress, the device will be in the Standby Power mode. Driving Chip Select (S) Low selects the device, placing it in the Active Power mode. After Power-up, a falling edge on Chip Select (S) is required prior to the start of any instruction. 2.5 Hold (HOLD) The Hold (HOLD) signal is used to pause any serial communications with the device without deselecting the device. During the Hold condition, the Serial Data Output (Q) is high impedance, and Serial Data Input (D) and Serial Clock (C) are Don't Care. To start the Hold condition, the device must be selected, with Chip Select (S) driven Low. 2.6 Write Protect (W) The main purpose of this input signal is to freeze the size of the area of memory that is protected against program or erase instructions (as specified by the values in the BP2, BP1 and BP0 bits of the Status Register). 8/41 Rev. 1 M25P128 SPI modes 3 SPI modes These devices can be driven by a microcontroller with its SPI peripheral running in either of the two following modes: CPOL=0, CPHA=0 CPOL=1, CPHA=1 For these two modes, input data is latched in on the rising edge of Serial Clock (C), and output data is available from the falling edge of Serial Clock (C). The difference between the two modes, as shown in Figure 5, is the clock polarity when the bus master is in Stand-by mode and not transferring data: Figure 4. C remains at 0 for (CPOL=0, CPHA=0) C remains at 1 for (CPOL=1, CPHA=1) Bus Master and Memory Devices on the SPI Bus VCC SDO SPI Interface with (CPOL, CPHA) = (0, 0) or (1, 1) SDI SCK C Q D VCC VCC C Q D VCC C Q D Bus Master (ST6, ST7, ST9, ST10, Others) SPI Memory Device R(2) CS3 CS2 SPI Memory Device R(2) SPI Memory Device R(2) CS1 S W HOLD S W HOLD S W HOLD AI03746e 1. The Write Protect (W) and Hold (HOLD) signals should be driven, High or Low as appropriate. Figure 5. SPI Modes Supported CPOL CPHA 0 0 C 1 1 C D MSB Q MSB AI01438B Rev. 1 9/41 Operating features 4 Operating features 4.1 Page programming M25P128 To program one data byte, two instructions are required: Write Enable (WREN), which is one byte, and a Page Program (PP) sequence, which consists of four bytes plus data. This is followed by the internal Program cycle (of duration tPP). To spread this overhead, the Page Program (PP) instruction allows up to 256 bytes to be programmed at a time (changing bits from 1 to 0), provided that they lie in consecutive addresses on the same page of memory. For optimized timings, it is recommended to use the Page Program (PP) instruction to program all consecutive targeted Bytes in a single sequence versus using several Page Program (PP) sequences with each containing only a few Bytes (see Section 6.8: Page Program (PP) and Table 14: AC Characteristics). 4.2 Sector Erase and Bulk Erase The Page Program (PP) instruction allows bits to be reset from 1 to 0. Before this can be applied, the bytes of memory need to have been erased to all 1s (FFh). This can be achieved either a sector at a time, using the Sector Erase (SE) instruction, or throughout the entire memory, using the Bulk Erase (BE) instruction. This starts an internal Erase cycle (of duration tSE or tBE). The Erase instruction must be preceded by a Write Enable (WREN) instruction. 4.3 Polling during a write, program or erase cycle A further improvement in the time to Write Status Register (WRSR), Program (PP) or Erase (SE or BE) can be achieved by not waiting for the worst case delay (tW, tPP, tSE, or tBE). The Write In Progress (WIP) bit is provided in the Status Register so that the application program can monitor its value, polling it to establish when the previous Write cycle, Program cycle or Erase cycle is complete. 4.4 Active power and standby power modes When Chip Select (S) is Low, the device is selected, and in the Active Power mode. When Chip Select (S) is High, the device is deselected, but could remain in the Active Power mode until all internal cycles have completed (Program, Erase, Write Status Register). The device then goes in to the Standby Power mode. The device consumption drops to ICC1. 10/41 Rev. 1 M25P128 4.5 Operating features Status Register The Status Register contains a number of status and control bits that can be read or set (as appropriate) by specific instructions. See Section 6.4: Read Status Register (RDSR) for a detailed description of the Status Register bits. 4.6 Protection modes The environments where non-volatile memory devices are used can be very noisy. No SPI device can operate correctly in the presence of excessive noise. To help combat this, the M25P128 features the following data protection mechanisms: Power On Reset and an internal timer (tPUW) can provide protection against inadvertant changes while the power supply is outside the operating specification. Program, Erase and Write Status Register instructions are checked that they consist of a number of clock pulses that is a multiple of eight, before they are accepted for execution. All instructions that modify data must be preceded by a Write Enable (WREN) instruction to set the Write Enable Latch (WEL) bit. This bit is returned to its reset state by the following events: - Power-up - Write Disable (WRDI) instruction completion - Write Status Register (WRSR) instruction completion - Page Program (PP) instruction completion - Sector Erase (SE) instruction completion - Bulk Erase (BE) instruction completion The Block Protect (BP2, BP1, BP0) bits allow part of the memory to be configured as read-only. This is the Software Protected Mode (SPM). The Write Protect (W) signal allows the Block Protect (BP2, BP1, BP0) bits and Status Register Write Disable (SRWD) bit to be protected. This is the Hardware Protected Mode (HPM). Table 2. Protected Area Sizes Status Register Content Memory Content BP2 Bit BP1 Bit BP0 Bit 1. Protected Area Unprotected Area 0 0 0 none All Sectors (Sectors 0 to 63)(1) 0 0 1 Upper 64th (1 Sector, 2Mb) Sectors 0 to 62 0 1 0 Upper 32nd (2 Sectors, 4Mb) Sectors 0 to 61 0 1 1 Upper 16nd (4 Sectors, 8Mb) Sectors 0 to 59 1 0 0 Upper 8nd (8 Sectors, 16Mb) Sectors 0 to 55 1 0 1 Upper Quarter (16 Sectors, 32Mb) Lower 3 Quarters (Sectors 0 to 47) 1 1 0 Upper Half (32 Sectors, 64Mb) Lower Half (Sectors 0 to 31) 1 1 1 All sectors (64 Sectors, 128Mb) none The device is ready to accept a Bulk Erase instruction if, and only if, all Block Protect (BP2, BP1, BP0) are 0. Rev. 1 11/41 Operating features 4.7 M25P128 Hold condition The Hold (HOLD) signal is used to pause any serial communications with the device without resetting the clocking sequence. However, taking this signal Low does not terminate any Write Status Register, Program or Erase cycle that is currently in progress. To enter the Hold condition, the device must be selected, with Chip Select (S) Low. The Hold condition starts on the falling edge of the Hold (HOLD) signal, provided that this coincides with Serial Clock (C) being Low (as shown in Figure 6). The Hold condition ends on the rising edge of the Hold (HOLD) signal, provided that this coincides with Serial Clock (C) being Low. If the falling edge does not coincide with Serial Clock (C) being Low, the Hold condition starts after Serial Clock (C) next goes Low. Similarly, if the rising edge does not coincide with Serial Clock (C) being Low, the Hold condition ends after Serial Clock (C) next goes Low. (This is shown in Figure 6). During the Hold condition, the Serial Data Output (Q) is high impedance, and Serial Data Input (D) and Serial Clock (C) are Don't Care. Normally, the device is kept selected, with Chip Select (S) driven Low, for the whole duration of the Hold condition. This is to ensure that the state of the internal logic remains unchanged from the moment of entering the Hold condition. If Chip Select (S) goes High while the device is in the Hold condition, this has the effect of resetting the internal logic of the device. To restart communication with the device, it is necessary to drive Hold (HOLD) High, and then to drive Chip Select (S) Low. This prevents the device from going back to the Hold condition. Figure 6. Hold Condition Activation C HOLD Hold Condition (standard use) Hold Condition (non-standard use) AI02029D 12/41 Rev. 1 M25P128 5 Memory Organization Memory Organization The memory is organized as: 16777216 bytes (8 bits each) 64 sectors (2Mbits, 262144 bytes each) 65536 pages (256 bytes each). Each page can be individually programmed (bits are programmed from 1 to 0). The device is Sector or Bulk Erasable (bits are erased from 0 to 1) but not Page Erasable. Figure 7. Block Diagram HOLD W High Voltage Generator Control Logic S C D I/O Shift Register Q Address Register and Counter Status Register 256 Byte Data Buffer FFFFFFh Y Decoder Size of the read-only memory area 00000h 000FFh 256 Bytes (Page Size) X Decoder AI11316 Rev. 1 13/41 Memory Organization Table 3. M25P128 Memory Organization Sector 14/41 Address Range 63 FC0000h FFFFFFh 62 F80000h FBFFFFh 61 F40000h F7FFFFh 60 F00000h F3FFFFh 59 EC0000h EFFFFFh 58 E80000h EBFFFFh 57 E40000h E7FFFFh 56 E00000h E3FFFFh 55 DC0000h DFFFFFh 54 D80000h DBFFFFh 53 D40000h D7FFFFh 52 D00000h D3FFFFh 51 CC0000h CFFFFFh 50 C80000h CBFFFFh 49 C40000h C7FFFFh 48 C00000h C3FFFFh 47 BC0000h BFFFFFh 46 B80000h BBFFFFh 45 B40000h B7FFFFh 44 B00000h B3FFFFh 43 AC0000h AFFFFFh 42 A80000h ABFFFFh 41 A40000h A7FFFFh 40 A00000h A3FFFFh 39 9C0000h 9FFFFFh 38 980000h 9BFFFFh 37 940000h 97FFFFh 36 900000h 93FFFFh 35 8C0000h 8FFFFFh 34 880000h 8BFFFFh 33 840000h 87FFFFh 32 800000h 83FFFFh 31 7C0000h 7FFFFFh 30 780000h 7BFFFFh 29 740000h 77FFFFh Rev. 1 M25P128 Memory Organization Table 3. Memory Organization (continued) Sector Address Range 28 700000h 73FFFFh 27 6C0000h 6FFFFFh 26 680000h 6BFFFFh 25 640000h 67FFFFh 24 600000h 63FFFFh 23 5C0000h 5FFFFFh 22 580000h 5BFFFFh 21 540000h 57FFFFh 20 500000h 53FFFFh 19 4C0000h 4FFFFFh 18 480000h 4BFFFFh 17 440000h 47FFFFh 16 400000h 43FFFFh 15 3C0000h 3FFFFFh 14 380000h 3BFFFFh 13 340000h 37FFFFh 12 300000h 33FFFFh 11 2C0000h 2FFFFFh 10 280000h 2BFFFFh 9 240000h 27FFFFh 8 200000h 23FFFFh 7 1C0000h 1FFFFFh 6 180000h 1BFFFFh 5 140000h 17FFFFh 4 100000h 13FFFFh 3 0C0000h 0FFFFFh 2 080000h 0BFFFFh 1 040000h 07FFFFh 0 000000h 03FFFFh Rev. 1 15/41 Instructions 6 M25P128 Instructions All instructions, addresses and data are shifted in and out of the device, most significant bit first. Serial Data Input (D) is sampled on the first rising edge of Serial Clock (C) after Chip Select (S) is driven Low. Then, the one-byte instruction code must be shifted in to the device, most significant bit first, on Serial Data Input (D), each bit being latched on the rising edges of Serial Clock (C). The instruction set is listed in Table 4. Every instruction sequence starts with a one-byte instruction code. Depending on the instruction, this might be followed by address bytes, or by data bytes, or by both or none. In the case of a Read Data Bytes (READ), Read Data Bytes at Higher Speed (Fast_Read), Read Status Register (RDSR) or Read Identification (RDID) instruction, the shifted-in instruction sequence is followed by a data-out sequence. Chip Select (S) can be driven High after any bit of the data-out sequence is being shifted out. In the case of a Page Program (PP), Sector Erase (SE), Bulk Erase (BE), Write Status Register (WRSR), Write Enable (WREN) or Write Disable (WRDI), Chip Select (S) must be driven High exactly at a byte boundary, otherwise the instruction is rejected, and is not executed. That is, Chip Select (S) must driven High when the number of clock pulses after Chip Select (S) being driven Low is an exact multiple of eight. All attempts to access the memory array during a Write Status Register cycle, Program cycle or Erase cycle are ignored, and the internal Write Status Register cycle, Program cycle or Erase cycle continues unaffected. Table 4. Instruction Set Instruction Address Dummy Bytes Bytes Data Bytes WREN Write Enable 0000 0110 06h 0 0 0 WRDI Write Disable 0000 0100 04h 0 0 0 RDID Read Identification 1001 1111 9Fh 0 0 1 to 3 RDSR Read Status Register 0000 0101 05h 0 0 1 to WRSR Write Status Register 0000 0001 01h 0 0 1 READ Read Data Bytes 0000 0011 03h 3 0 1 to Read Data Bytes at Higher Speed 0000 1011 0Bh 3 1 1 to PP Page Program 0000 0010 02h 3 0 1 to 256 SE Sector Erase 1101 1000 D8h 3 0 0 BE Bulk Erase 1100 0111 C7h 0 0 0 FAST_READ 16/41 One-byte Instruction Code Description Rev. 1 M25P128 6.1 Instructions Write Enable (WREN) The Write Enable (WREN) instruction (Figure 8) sets the Write Enable Latch (WEL) bit. The Write Enable Latch (WEL) bit must be set prior to every Page Program (PP), Sector Erase (SE), Bulk Erase (BE) and Write Status Register (WRSR) instruction. The Write Enable (WREN) instruction is entered by driving Chip Select (S) Low, sending the instruction code, and then driving Chip Select (S) High. Figure 8. Write Enable (WREN) Instruction Sequence S 0 1 2 3 4 5 6 7 C Instruction D High Impedance Q AI02281E 6.2 Write Disable (WRDI) The Write Disable (WRDI) instruction (Figure 9) resets the Write Enable Latch (WEL) bit. The Write Disable (WRDI) instruction is entered by driving Chip Select (S) Low, sending the instruction code, and then driving Chip Select (S) High. The Write Enable Latch (WEL) bit is reset under the following conditions: Power-up Write Disable (WRDI) instruction completion Write Status Register (WRSR) instruction completion Page Program (PP) instruction completion Sector Erase (SE) instruction completion Bulk Erase (BE) instruction completion Figure 9. Write Disable (WRDI) Instruction Sequence S 0 1 2 3 4 5 6 7 C Instruction D High Impedance Q AI03750D Rev. 1 17/41 Instructions 6.3 M25P128 Read Identification (RDID) The Read Identification (RDID) instruction allows the 8-bit manufacturer identification to be read, followed by two bytes of device identification. The manufacturer identification is assigned by JEDEC, and has the value 20h for STMicroelectronics. The device identification is assigned by the device manufacturer, and indicates the memory type in the first byte (20h), and the memory capacity of the device in the second byte (18h). Any Read Identification (RDID) instruction while an Erase or Program cycle is in progress, is not decoded, and has no effect on the cycle that is in progress. The device is first selected by driving Chip Select (S) Low. Then, the 8-bit instruction code for the instruction is shifted in. This is followed by the 24-bit device identification, stored in the memory, being shifted out on Serial Data Output (Q), each bit being shifted out during the falling edge of Serial Clock (C). The instruction sequence is shown in Figure 10. The Read Identification (RDID) instruction is terminated by driving Chip Select (S) High at any time during data output. When Chip Select (S) is driven High, the device is put in the Standby Power mode. Once in the Standby Power mode, the device waits to be selected, so that it can receive, decode and execute instructions. Table 5. Read Identification (RDID) Data-Out Sequence Device Identification Manufacturer Identification Memory Type Memory Capacity 20h 18h 20h Figure 10. Read Identification (RDID) Instruction Sequence and Data-Out Sequence S 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 28 29 30 31 C Instruction D Manufacturer Identification Device Identification High Impedance Q 15 14 13 MSB 3 2 1 0 MSB AI06809b 18/41 Rev. 1 M25P128 6.4 Instructions Read Status Register (RDSR) The Read Status Register (RDSR) instruction allows the Status Register to be read. The Status Register may be read at any time, even while a Program, Erase or Write Status Register cycle is in progress. When one of these cycles is in progress, it is recommended to check the Write In Progress (WIP) bit before sending a new instruction to the device. It is also possible to read the Status Register continuously, as shown in Figure 11. Table 6. Status Register Format b7 SRWD b0 0 0 BP2 BP1 BP0 WEL WIP Status Register Write Protect Block Protect Bits Write Enable Latch Bit Write In Progress Bit The status and control bits of the Status Register are as follows: 6.4.1 WIP bit The Write In Progress (WIP) bit indicates whether the memory is busy with a Write Status Register, Program or Erase cycle. When set to 1, such a cycle is in progress, when reset to 0 no such cycle is in progress. 6.4.2 WEL bit The Write Enable Latch (WEL) bit indicates the status of the internal Write Enable Latch. When set to 1 the internal Write Enable Latch is set, when set to 0 the internal Write Enable Latch is reset and no Write Status Register, Program or Erase instruction is accepted. 6.4.3 BP2, BP1, BP0 bits The Block Protect (BP2, BP1, BP0) bits are non-volatile. They define the size of the area to be software protected against Program and Erase instructions. These bits are written with the Write Status Register (WRSR) instruction. When one or more of the Block Protect (BP2, BP1, BP0) bits is set to 1, the relevant memory area (as defined in Table 2) becomes protected against Page Program (PP) and Sector Erase (SE) instructions. The Block Protect (BP2, BP1, BP0) bits can be written provided that the Hardware Protected mode has not been set. The Bulk Erase (BE) instruction is executed if, and only if, all Block Protect (BP2, BP1, BP0) bits are 0. 6.4.4 SRWD bit The Status Register Write Disable (SRWD) bit is operated in conjunction with the Write Protect (W) signal. The Status Register Write Disable (SRWD) bit and Write Protect (W) signal allow the device to be put in the Hardware Protected mode (when the Status Register Write Disable (SRWD) bit is set to 1, and Write Protect (W) is driven Low). In this mode, the non-volatile bits of the Status Register (SRWD, BP2, BP1, BP0) become read-only bits and the Write Status Register (WRSR) instruction is no longer accepted for execution. Rev. 1 19/41 Instructions M25P128 Figure 11. Read Status Register (RDSR) Instruction Sequence and Data-Out Sequence S 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 C Instruction D Status Register Out Status Register Out High Impedance Q 7 6 5 MSB 4 3 2 1 0 7 6 5 4 3 2 1 0 7 MSB AI02031E 20/41 Rev. 1 M25P128 6.5 Instructions Write Status Register (WRSR) The Write Status Register (WRSR) instruction allows new values to be written to the Status Register. Before it can be accepted, a Write Enable (WREN) instruction must previously have been executed. After the Write Enable (WREN) instruction has been decoded and executed, the device sets the Write Enable Latch (WEL). The Write Status Register (WRSR) instruction is entered by driving Chip Select (S) Low, followed by the instruction code and the data byte on Serial Data Input (D). The instruction sequence is shown in Figure 12. The Write Status Register (WRSR) instruction has no effect on b6, b5, b1 and b0 of the Status Register. b6 and b5 are always read as 0. Chip Select (S) must be driven High after the eighth bit of the data byte has been latched in. If not, the Write Status Register (WRSR) instruction is not executed. As soon as Chip Select (S) is driven High, the self-timed Write Status Register cycle (whose duration is tW) is initiated. While the Write Status Register cycle is in progress, the Status Register may still be read to check the value of the Write In Progress (WIP) bit. The Write In Progress (WIP) bit is 1 during the self-timed Write Status Register cycle, and is 0 when it is completed. When the cycle is completed, the Write Enable Latch (WEL) is reset. The Write Status Register (WRSR) instruction allows the user to change the values of the Block Protect (BP2, BP1, BP0) bits, to define the size of the area that is to be treated as read-only, as defined in Table 2. The Write Status Register (WRSR) instruction also allows the user to set or reset the Status Register Write Disable (SRWD) bit in accordance with the Write Protect (W) signal. The Status Register Write Disable (SRWD) bit and Write Protect (W) signal allow the device to be put in the Hardware Protected Mode (HPM). The Write Status Register (WRSR) instruction is not executed once the Hardware Protected Mode (HPM) is entered. Table 7. Protection Modes W Signal SRWD Bit 1 0 0 0 1 1 0 1 Mode Write Protection of the Status Register Memory Content Protected Area(1) Unprotected Area(1) Status Register is Writable (if the WREN instruction Software has set the WEL bit) Protected (SPM) The values in the SRWD, BP2, BP1 and BP0 bits can be changed Protected against Page Program, Sector Erase and Bulk Erase Ready to accept Page Program and Sector Erase instructions Status Register is Hardware Hardware write protected Protected The values in the SRWD, (HPM) BP2, BP1 and BP0 bits cannot be changed Protected against Page Program, Sector Erase and Bulk Erase Ready to accept Page Program and Sector Erase instructions 1. As defined by the values in the Block Protect (BP2, BP1, BP0) bits of the Status Register, as shown in Table 2: Protected Area Sizes. The protection features of the device are summarized in Table 7 When the Status Register Write Disable (SRWD) bit of the Status Register is 0 (its initial delivery state), it is possible to write to the Status Register provided that the Write Enable Rev. 1 21/41 Instructions M25P128 Latch (WEL) bit has previously been set by a Write Enable (WREN) instruction, regardless of the whether Write Protect (W) is driven High or Low. When the Status Register Write Disable (SRWD) bit of the Status Register is set to 1, two cases need to be considered, depending on the state of Write Protect (W): If Write Protect (W) is driven High, it is possible to write to the Status Register provided that the Write Enable Latch (WEL) bit has previously been set by a Write Enable (WREN) instruction. If Write Protect (W) is driven Low, it is not possible to write to the Status Register even if the Write Enable Latch (WEL) bit has previously been set by a Write Enable (WREN) instruction. (Attempts to write to the Status Register are rejected, and are not accepted for execution). As a consequence, all the data bytes in the memory area that are software protected (SPM) by the Block Protect (BP2, BP1, BP0) bits of the Status Register, are also hardware protected against data modification. Regardless of the order of the two events, the Hardware Protected Mode (HPM) can be entered: by setting the Status Register Write Disable (SRWD) bit after driving Write Protect (W) Low or by driving Write Protect (W) Low after setting the Status Register Write Disable (SRWD) bit. The only way to exit the Hardware Protected Mode (HPM) once entered is to pull Write Protect (W) High. If Write Protect (W) is permanently tied High, the Hardware Protected Mode (HPM) can never be activated, and only the Software Protected Mode (SPM), using the Block Protect (BP2, BP1, BP0) bits of the Status Register, can be used. Figure 12. Write Status Register (WRSR) Instruction Sequence S 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 C Instruction Status Register In 7 D High Impedance 6 5 4 3 2 1 0 MSB Q AI02282D 22/41 Rev. 1 M25P128 6.6 Instructions Read Data Bytes (READ) The device is first selected by driving Chip Select (S) Low. The instruction code for the Read Data Bytes (READ) instruction is followed by a 3-byte address (A23-A0), each bit being latched-in during the rising edge of Serial Clock (C). Then the memory contents, at that address, is shifted out on Serial Data Output (Q), each bit being shifted out, at a maximum frequency fR, during the falling edge of Serial Clock (C). The instruction sequence is shown in Figure 13. The first byte addressed can be at any location. The address is automatically incremented to the next higher address after each byte of data is shifted out. The whole memory can, therefore, be read with a single Read Data Bytes (READ) instruction. When the highest address is reached, the address counter rolls over to 000000h, allowing the read sequence to be continued indefinitely. The Read Data Bytes (READ) instruction is terminated by driving Chip Select (S) High. Chip Select (S) can be driven High at any time during data output. Any Read Data Bytes (READ) instruction, while an Erase, Program or Write cycle is in progress, is rejected without having any effects on the cycle that is in progress. Figure 13. Read Data Bytes (READ) Instruction Sequence and Data-Out Sequence S 0 1 2 3 4 5 6 7 8 9 10 28 29 30 31 32 33 34 35 36 37 38 39 C Instruction 24-Bit Address 23 22 21 D 3 2 1 0 MSB Data Out 1 High Impedance 7 Q 6 5 4 3 2 Data Out 2 1 0 7 MSB AI03748D Rev. 1 23/41 Instructions 6.7 M25P128 Read Data Bytes at Higher Speed (FAST_READ) The device is first selected by driving Chip Select (S) Low. The instruction code for the Read Data Bytes at Higher Speed (FAST_READ) instruction is followed by a 3-byte address (A23A0) and a dummy byte, each bit being latched-in during the rising edge of Serial Clock (C). Then the memory contents, at that address, is shifted out on Serial Data Output (Q), each bit being shifted out, at a maximum frequency fC, during the falling edge of Serial Clock (C). The instruction sequence is shown in Figure 14. The first byte addressed can be at any location. The address is automatically incremented to the next higher address after each byte of data is shifted out. The whole memory can, therefore, be read with a single Read Data Bytes at Higher Speed (FAST_READ) instruction. When the highest address is reached, the address counter rolls over to 000000h, allowing the read sequence to be continued indefinitely. The Read Data Bytes at Higher Speed (FAST_READ) instruction is terminated by driving Chip Select (S) High. Chip Select (S) can be driven High at any time during data output. Any Read Data Bytes at Higher Speed (FAST_READ) instruction, while an Erase, Program or Write cycle is in progress, is rejected without having any effects on the cycle that is in progress. Figure 14. Read Data Bytes at Higher Speed (FAST_READ) Instruction and Data-Out Sequence S 0 1 2 3 4 5 6 7 8 9 10 28 29 30 31 C Instruction 24 BIT ADDRESS 23 22 21 D 3 2 1 0 High Impedance Q S 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 C Dummy Byte D 7 6 5 4 3 2 1 0 DATA OUT 2 DATA OUT 1 Q 7 6 5 MSB 4 3 2 1 0 7 MSB 6 5 4 3 2 1 0 7 MSB AI04006 24/41 Rev. 1 M25P128 6.8 Instructions Page Program (PP) The Page Program (PP) instruction allows bytes to be programmed in the memory (changing bits from 1 to 0). Before it can be accepted, a Write Enable (WREN) instruction must previously have been executed. After the Write Enable (WREN) instruction has been decoded, the device sets the Write Enable Latch (WEL). The Page Program (PP) instruction is entered by driving Chip Select (S) Low, followed by the instruction code, three address bytes and at least one data byte on Serial Data Input (D). If the 8 least significant address bits (A7-A0) are not all zero, all transmitted data that goes beyond the end of the current page are programmed from the start address of the same page (from the address whose 8 least significant bits (A7-A0) are all zero). Chip Select (S) must be driven Low for the entire duration of the sequence. The instruction sequence is shown in Figure 15. If more than 256 bytes are sent to the device, previously latched data are discarded and the last 256 data bytes are guaranteed to be programmed correctly within the same page. If less than 256 Data bytes are sent to device, they are correctly programmed at the requested addresses without having any effects on the other bytes of the same page. For optimized timings, it is recommended to use the Page Program (PP) instruction to program all consecutive targeted Bytes in a single sequence versus using several Page Program (PP) sequences with each containing only a few Bytes (see Table 14: AC Characteristics). Chip Select (S) must be driven High after the eighth bit of the last data byte has been latched in, otherwise the Page Program (PP) instruction is not executed. As soon as Chip Select (S) is driven High, the self-timed Page Program cycle (whose duration is tPP) is initiated. While the Page Program cycle is in progress, the Status Register may be read to check the value of the Write In Progress (WIP) bit. The Write In Progress (WIP) bit is 1 during the self-timed Page Program cycle, and is 0 when it is completed. At some unspecified time before the cycle is completed, the Write Enable Latch (WEL) bit is reset. A Page Program (PP) instruction applied to a page which is protected by the Block Protect (BP2, BP1, BP0) bits (see Table 2 and Table 3) is not executed. Rev. 1 25/41 Instructions M25P128 Figure 15. Page Program (PP) Instruction Sequence S 0 1 2 3 4 5 6 7 8 28 29 30 31 32 33 34 35 36 37 38 39 9 10 C Instruction 24-Bit Address 23 22 21 D 3 2 Data Byte 1 1 0 7 6 5 4 3 2 0 1 MSB MSB 2078 2079 2077 2076 2075 2074 2073 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 2072 S 1 0 C Data Byte 2 D 7 6 MSB 26/41 5 4 3 2 Data Byte 3 1 0 7 6 5 MSB Rev. 1 4 3 2 Data Byte 256 1 0 7 6 MSB 5 4 3 2 AI04082B M25P128 6.9 Instructions Sector Erase (SE) The Sector Erase (SE) instruction sets to 1 (FFh) all bits inside the chosen sector. Before it can be accepted, a Write Enable (WREN) instruction must previously have been executed. After the Write Enable (WREN) instruction has been decoded, the device sets the Write Enable Latch (WEL). The Sector Erase (SE) instruction is entered by driving Chip Select (S) Low, followed by the instruction code, and three address bytes on Serial Data Input (D). Any address inside the Sector (see Table 3) is a valid address for the Sector Erase (SE) instruction. Chip Select (S) must be driven Low for the entire duration of the sequence. The instruction sequence is shown in Figure 16. Chip Select (S) must be driven High after the eighth bit of the last address byte has been latched in, otherwise the Sector Erase (SE) instruction is not executed. As soon as Chip Select (S) is driven High, the self-timed Sector Erase cycle (whose duration is tSE) is initiated. While the Sector Erase cycle is in progress, the Status Register may be read to check the value of the Write In Progress (WIP) bit. The Write In Progress (WIP) bit is 1 during the self-timed Sector Erase cycle, and is 0 when it is completed. At some unspecified time before the cycle is completed, the Write Enable Latch (WEL) bit is reset. A Sector Erase (SE) instruction applied to a page which is protected by the Block Protect (BP2, BP1, BP0) bits (see Table 2 and Table 3) is not executed. Figure 16. Sector Erase (SE) Instruction Sequence S 0 1 2 3 4 5 6 7 8 9 29 30 31 C Instruction 24 Bit Address 23 22 D 2 1 0 MSB AI03751D Rev. 1 27/41 Instructions 6.10 M25P128 Bulk Erase (BE) The Bulk Erase (BE) instruction sets all bits to 1 (FFh). Before it can be accepted, a Write Enable (WREN) instruction must previously have been executed. After the Write Enable (WREN) instruction has been decoded, the device sets the Write Enable Latch (WEL). The Bulk Erase (BE) instruction is entered by driving Chip Select (S) Low, followed by the instruction code on Serial Data Input (D). Chip Select (S) must be driven Low for the entire duration of the sequence. The instruction sequence is shown in Figure 17. Chip Select (S) must be driven High after the eighth bit of the instruction code has been latched in, otherwise the Bulk Erase instruction is not executed. As soon as Chip Select (S) is driven High, the self-timed Bulk Erase cycle (whose duration is tBE) is initiated. While the Bulk Erase cycle is in progress, the Status Register may be read to check the value of the Write In Progress (WIP) bit. The Write In Progress (WIP) bit is 1 during the self-timed Bulk Erase cycle, and is 0 when it is completed. At some unspecified time before the cycle is completed, the Write Enable Latch (WEL) bit is reset. The Bulk Erase (BE) instruction is executed only if all Block Protect (BP2, BP1, BP0) bits are 0. The Bulk Erase (BE) instruction is ignored if one, or more, sectors are protected. Figure 17. Bulk Erase (BE) Instruction Sequence S 0 1 2 3 4 5 6 7 C Instruction D AI03752D 28/41 Rev. 1 M25P128 7 Power-up and power-down Power-up and power-down At Power-up and Power-down, the device must not be selected (that is Chip Select (S) must follow the voltage applied on VCC) until VCC reaches the correct value: VCC(min) at Power-up, and then for a further delay of tVSL VSS at Power-down Usually a simple pull-up resistor on Chip Select (S) can be used to ensure safe and proper Power-up and Power-down. To avoid data corruption and inadvertent write operations during Power-up, a Power On Reset (POR) circuit is included. The logic inside the device is held reset while VCC is less than the Power On Reset (POR) threshold voltage, VWI - all operations are disabled, and the device does not respond to any instruction. Moreover, the device ignores all Write Enable (WREN), Page Program (PP), Sector Erase (SE), Bulk Erase (BE) and Write Status Register (WRSR) instructions until a time delay of tPUW has elapsed after the moment that VCC rises above the VWI threshold. However, the correct operation of the device is not guaranteed if, by this time, VCC is still below VCC(min). No Write Status Register, Program or Erase instructions should be sent until the later of: tPUW after VCC passed the VWI threshold tVSL after VCC passed the VCC(min) level These values are specified in Table 8. If the delay, tVSL, has elapsed, after VCC has risen above VCC(min), the device can be selected for READ instructions even if the tPUW delay is not yet fully elapsed. At Power-up, the device is in the following state: The device is in the Standby Power mode The Write Enable Latch (WEL) bit is reset. Normal precautions must be taken for supply rail decoupling, to stabilize the VCC supply. Each device in a system should have the VCC rail decoupled by a suitable capacitor close to the package pins. (Generally, this capacitor is of the order of 0.1F). At Power-down, when VCC drops from the operating voltage, to below the Power On Reset (POR) threshold voltage, VWI, all operations are disabled and the device does not respond to any instruction. (The designer needs to be aware that if a Power-down occurs while a Write, Program or Erase cycle is in progress, some data corruption can result.) Rev. 1 29/41 Initial delivery state M25P128 Figure 18. Power-up Timing VCC VCC(max) Program, Erase and Write Commands are Rejected by the Device Chip Selection Not Allowed VCC(min) tVSL Reset State of the Device Read Access allowed Device fully accessible VWI tPUW time AI04009C Table 8. Power-Up Timing and VWI Threshold Symbol Parameter Min. Max. tVSL(1) VCC(min) to S Low 60 tPUW(1) Time delay to Write instruction 1 10 ms 1.5 2.5 V VWI Write Inhibit Voltage s 1. These parameters are characterized only. 8 Initial delivery state The device is delivered with the memory array erased: all bits are set to 1 (each byte contains FFh). The Status Register contains 00h (all Status Register bits are 0). 30/41 Unit Rev. 1 M25P128 9 Maximum rating Maximum rating Stressing the device outside the ratings listed in Table 9 may cause permanent damage to the device. These are stress ratings only, and operation of the device at these, or any other conditions outside those indicated in the Operating sections of this specification, is not implied. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability. Refer also to the STMicroelectronics SURE Program and other relevant quality documents. Table 9. Absolute Maximum Ratings Symbol Min. Max. Unit Storage Temperature -65 150 C VIO Input and Output Voltage (with respect to Ground) -0.5 4.0 V VCC Supply Voltage -0.2 4.0 V -2000 2000 V TSTG VESD Parameter Electrostatic Discharge Voltage (Human Body model) (1) 1. JEDEC Std JESD22-A114A (C1=100 pF, R1=1500 , R2=500 ) Rev. 1 31/41 DC and AC parameters 10 M25P128 DC and AC parameters This section summarizes the operating and measurement conditions, and the DC and AC characteristics of the device. The parameters in the DC and AC Characteristic tables that follow are derived from tests performed under the Measurement Conditions summarized in the relevant tables. Designers should check that the operating conditions in their circuit match the measurement conditions when relying on the quoted parameters. Table 10. Operating Conditions Symbol VCC TA Table 11. Parameter Min. Max. Unit Supply Voltage 2.7 3.6 V Ambient Operating Temperature -40 85 C AC Measurement Conditions Symbol CL Parameter Min. Max. Load Capacitance 30 Input Rise and Fall Times Unit pF 5 ns Input Pulse Voltages 0.2VCC to 0.8VCC V Input Timing Reference Voltages 0.3VCC to 0.7VCC V VCC / 2 V Output Timing Reference Voltages 1. Output Hi-Z is defined as the point where data out is no longer driven. Figure 19. AC Measurement I/O Waveform Input Levels Input and Output Timing Reference Levels 0.8VCC 0.7VCC 0.5VCC 0.3VCC 0.2VCC AI07455 Table 12. Symbol COUT CIN Capacitance Parameter Test Condition Output Capacitance (Q) Input Capacitance (other pins) Max. Unit VOUT = 0V 8 pF VIN = 0V 6 pF 1. Sampled only, not 100% tested, at TA=25C and a frequency of 20 MHz. 32/41 Rev. 1 Min. M25P128 DC and AC parameters Table 13. Symbol DC Characteristics Parameter Test Condition (in addition to those in Table 10) Min. Max. Unit ILI Input Leakage Current 2 A ILO Output Leakage Current 2 A ICC1 Standby Current S = VCC, VIN = VSS or VCC 100 A C = 0.1VCC / 0.9.VCC at 50MHz, Q = open 8 mA C = 0.1VCC / 0.9.VCC at 20MHz, Q = open 4 mA ICC3 Operating Current (READ) ICC4 Operating Current (PP) S = VCC 20 mA ICC5 Operating Current (WRSR) S = VCC 20 mA ICC6 Operating Current (SE) S = VCC 20 mA ICC7 Operating Current (BE) S = VCC 20 mA VIL Input Low Voltage - 0.5 0.3VCC V VIH Input High Voltage 0.7VCC VCC+0.2 V VOL Output Low Voltage 0.4 V VOH Output High Voltage IOL = 1.6mA IOH Rev. 1 = -100A VCC-0.2 V 33/41 DC and AC parameters Table 14. M25P128 AC Characteristics Test conditions specified in Table 10 and Table 11 Symbol Alt. Parameter Min. fC fC Clock Frequency for the following instructions: FAST_READ, PP, SE, BE, WREN, WRDI, RDID, RDSR, WRSR Clock Frequency for READ instructions fR Typ. Max. Unit D.C. 50 MHz D.C. 20 MHz tCH(1) tCL(1) tCLCH(2) tCHCL(2) tCLH Clock High Time 9 ns tCLL Clock Low Time 9 ns 0.1 V/ns 0.1 V/ns tSLCH tCSS S Active Setup Time (relative to C) 5 ns S Not Active Hold Time (relative to C) 5 ns (3) Clock Rise Time (3) Clock Fall Time tCHSL (peak to peak) (peak to peak) tDVCH tDSU Data In Setup Time 2 ns tCHDX tDH Data In Hold Time 5 ns tCHSH S Active Hold Time (relative to C) 5 ns tSHCH S Not Active Setup Time (relative to C) 5 ns 100 ns tSHSL tCSH S Deselect Time tSHQZ(2) tDIS Output Disable Time 8 ns tCLQV tV Clock Low to Output Valid 8 ns tCLQX tHO Output Hold Time 0 ns tHLCH HOLD Setup Time (relative to C) 5 ns tCHHH HOLD Hold Time (relative to C) 5 ns tHHCH HOLD Setup Time (relative to C) 5 ns tCHHL HOLD Hold Time (relative to C) 5 ns tHHQX(2) tHLQZ(2) tWHSL(4) tSHWL (4) tW tPP(5) tLZ HOLD to Output Low-Z 8 ns tHZ HOLD to Output High-Z 8 ns Write Protect Setup Time 20 ns Write Protect Hold Time 100 ns Write Status Register Cycle Time 5 15 ms 7 ms 2 6 s 105 250 s Page Program Cycle Time (256 Bytes) 2.5 Page Program Cycle Time (n Bytes) 2.5 tSE Sector Erase Cycle Time tBE Bulk Erase Cycle Time 1. tCH and tCL must be greater than or equal to 1/fC (max). 2. Value is guaranteed by characterization, not 100% tested in production. 3. Expressed as a slew-rate. 4. Only applicable as a constraint for WRSR instruction when SRWD is set to 1. 5. Due to the Multi Level Cell technology, when using the Page Program (PP) instruction to program consecutive Bytes, optimized timings are obtained with one sequence including all the Bytes versus several sequences of only a few Bytes. If only a single byte is programmed, the estimated programming time is close to the time needed to program a full page of 256 Bytes. Therefore, it is highly recommended to use the Page Program (PP) instruction with a sequence of 256 consecutive Bytes. (1 n 256) 34/41 Rev. 1 M25P128 DC and AC parameters Figure 20. Serial Input Timing tSHSL S tCHSL tSLCH tCHSH tSHCH C tDVCH tCHCL tCHDX D Q tCLCH LSB IN MSB IN High Impedance AI01447C Figure 21. Write Protect Setup and Hold Timing during WRSR when SRWD=1 W tSHWL tWHSL S C D High Impedance Q AI07439 Rev. 1 35/41 DC and AC parameters M25P128 Figure 22. Hold Timing S tHLCH tCHHL tHHCH C tCHHH tHLQZ tHHQX Q D HOLD AI02032 Figure 23. Output Timing S tCH C tCLQV tCLQX tCLQV tCL tSHQZ tCLQX LSB OUT Q tQLQH tQHQL D ADDR.LSB IN AI01449e 36/41 Rev. 1 M25P128 11 Package mechanical Package mechanical Figure 24. VDFPN8 (MLP8), 8-lead Very thin Dual Flat Package No lead, 8x6mm, Package Outline D E E2 e b D2 A L L1 ddd A1 VDFPN-02 1. Drawing is not to scale. 2. The circle in the top view of the package indicates the position of pin 1. Table 15. VDFPN8 (MLP8), 8-lead Very thin Dual Flat Package No lead, 8x6mm, Package Mechanical Data millimeters inches Symbol Typ. A Min. 0.85 A1 Max. Typ. 1.00 0.0335 0.00 0.05 0.35 0.48 b 0.40 D 8.00 0.3150 D2 6.40 0.2520 ddd 0.0157 0.2362 E2 4.80 0.1890 e 1.27 K - 0.0500 0.20 0.0020 0.0138 0.0189 0.50 - - 0.0079 0.45 0.60 L1 N 0.0000 0.0020 6.00 - Max. 0.0394 0.05 E L Min. 0.0197 0.0177 0.15 8 0.0236 0.0059 8 Rev. 1 37/41 Package mechanical M25P128 Figure 25. SO16 wide - 16 lead Plastic Small Outline, 300 mils body width D 16 h x 45 9 C E 1 8 A2 B H A1 A L ddd e SO-H 1. Drawing is not to scale. Table 16. SO16 wide - 16 lead Plastic Small Outline, 300 mils body width millimeters inches Symbol Typ Min Max A 2.35 A1 Min Max 2.65 0.093 0.104 0.10 0.30 0.004 0.012 B 0.33 0.51 0.013 0.020 C 0.23 0.32 0.009 0.013 D 10.10 10.50 0.398 0.413 E 7.40 7.60 0.291 0.299 - - - - H 10.00 10.65 0.394 0.419 h 0.25 0.75 0.010 0.030 L 0.40 1.27 0.016 0.050 0 8 0 8 e 1.27 ddd 38/41 0.10 Rev. 1 Typ 0.050 0.004 M25P128 12 Part numbering Part numbering Table 17. Ordering Information Scheme Example: M25P128 - V MF 6 T P Device Type M25P = Serial Flash Memory for Code Storage Device Function 128 = 128Mit ( 16Mbx 8) Operating Voltage V = VCC = 2.7 to 3.6V Package MF = SO16 (300 mil width) ME = VDFPN8 8x6mm (MLP8) Device Grade 6 = Industrial temperature range, -40 to 85 C. Device tested with standard test flow Option blank = Standard Packing T = Tape and Reel Packing Plating Technology P or G = ECOPACK(R) (RoHs compliant) For a list of available options (speed, package, etc.) or for further information on any aspect of this device, please contact your nearest ST Sales Office. The category of second-Level Interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. Rev. 1 39/41 Revision history 13 M25P128 Revision history Table 18. Document Revision History Date Revision 02-May-2005 0.1 First issue. 09-Jun-2005 0.2 Table 2: Protected Area Sizes updated. Memory capacity modified in Section 6.3: Read Identification (RDID). 0.3 Updated tPP values in Table 14: AC Characteristics and tVSL value in Table 8: Power-Up Timing and VWI Threshold. Modified information in Section 4.1: Page programming and Section 6.8: Page Program (PP). 1 Document status promoted from Target specification to Preliminary data. Packages are ECOPACK(R) compliant. Blank option removed under Plating Technology in Table 17. Read Electronic Signature (RES) instruction removed. ICC1 parameter updated in Table 13: DC Characteristics. 28-Aug-2005 20-Jan-2006 40/41 Changes Rev. 1 M25P128 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners (c) 2006 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com Rev. 1 41/41