Features High speed 15 ns Output enable (OF) feature (7C166) e CMOS for optimum speed/power e Low active power 633 mW Low standby power 220 mW e TTL-compatible inputs and outputs e Automatic power-down when deselected CYPRESS CY7C164 CY7C166 Functional Description The CY7C164 and CY7C1 66 are high-per- formance CMOS static RAMs organized as 16,384 by 4 bits. Easy memory expan- sion is provided by an active LOW chip en- able (CE) and three-state drivers. The CY7C166 has an active low output enable (OE) feature. Both devices have an auto- matic power-down feature, reducing the power consumption by 65% when dese- lected. Writing to the device is accomplished when the chip enable (CE) and write enable (WE) inputs are both LOW (and the out- put enable (OE) is LOW for the 7C166). 16K x 4 Static RAM Data on the four input/output pins (I/O through 1/O3) is written into the memory location specified on the address pins (Ag through Aj3). Reading the device is accomplished by tak- ing chip enable (CE) LOW (and OE LOW for 7C166), while write enable (WE) re- mains HIGH. Under these conditions the contents of the memory location specified on the address pins will appear on the four data I/O pins. The I/O pinsstay in a high-impedance state when chip enable (CE) is HIGH (or output enable (OE) is HIGH for 7C166). A die coat is used to insure alpha immunity. Logic Block Diagram INPUT BUFFER Pin Configurations DIP Top View a VO 2 2 DIP/SOJ A = i Ka 256 x 64x 4 < 2 Top View aS ARRAY Q VO, A; w AG VOg COLUMN CE 222G22 (8) (70166 ONLY) C164-4 Selection Guidel'| 7C164~-12 7C164-15 7C164-20 7C164-25 7C164-35 7C16612 7C166-15 7C 166-20 7C16625 7C166-35 Maximum Access Time (ns) 12 15 20 25 35 Maximum Operating Current (mA) 160 145 80 70 70 Maximum Standby Current (mA) 40/20 40/20 40/20 20/20 20/20 Shaded area contains preliminary information. Note: 1. For military specifications, see the CY6C 164A/CY7C166A datasheet.CY7C164 J CYPRESS TENS Maximum Ratings (Above which the useful life may be impaired. For user guidelines, | Output Current into Outputs (LOW) .............. 20 mA not tested.) Static Discharge Voltage .. 0.0.0.0. 0.0cceceeee ee >2001V Storage Temperature .................. -65C to +150C (per MIL-STD-883, Method 3015) Ambient Temperature with Latch-Up Current 0.0.0.0... cee eee eee eee >200 mA Power Applied ............... ae 55C to +125C Operating Range Supply Voltage to Ground Potential ........ 0.5V to +7.0V Ambient DC Voltage Applied to Outputs Range Temperature Vee in High Z State!) oo... ee -0.5V to +7.0V c 7 Cw aPC SV 3 10% DC Input Voltage!) ooo -0.5V to +7.0V omer to+ = Electrical Characteristics Over the Operating Range 7C164-12 | 70164-15 7C16420 | 7C16425, 35 7C166-12 7C166-15 7C166-20 | 7C16625, 35 Parameter Description Test Conditions Min. | Max. | Min. | Max. | Min. | Max. | Min. | Max. | Unit Vou Output HIGH Vec = Min., 2.4 2.4 2.4 24 Vv Voltage lon = 4.0mA VoL Output LOW Vcc = Min, 04 04 0.4 04 [Vv Voltage lot = 8.0 mA Vin Input HIGH Voltage 22 | Voc | 22 [Vee | 22 [Vee | 22 | vec [ V VIL Input LOW -05] 08 [-05] 08 | -05] 08 | ~05 0.8 Vv Voltagel?] lix Input Load Current | GND < Vj < Vcc 5 +5 -5 +5 ~ +5 -5 +5 pA Ioz Output Leakage GND Vo Vcc, 5 +5 | -5 +5 -S +5 -5 +5 nA Current Output Disabled Ios Output Short Vcc = Max., 350 350 350 -350 | mA Circuit Current!) Vout = GND lec Vcc Operating Voc = Max., 160 11S 80 70 mA Supply Current lour = OmA Ise Automatic CE Max. Voc, CE > Vin, 40 40 40 20 | mA Power-Down Min. Duty Cycle = 100% Currentl4l Isp2 Automatic CE Max. Vcc, 20 20 20 20 mA Power-Down CE > Voc 0.39, Currentl4) Vin = Vec - 0.3V or Vin < 0.3V Shaded area contains preliminary information. Capacitancel5} Parameter Description Test Conditions Max. Unit CIn Input Capacitance Ta = 25C, f = 1 MHz, 10 pF Cout Output Capacitance Veo = 5.0V 10 pF Notes: 2. Minimum voltage is equal to ~3,0V for pulse durations less than 30 ns. 3, Not more than 1 output should be shorted at one time. Duration of the short circuit should not exceed 30 seconds. 4, A pull-up resistor to Vcc on the CE input is required to keep the de- vice deselected during Vcc power-up, otherwise [sp will exceed values given. 5. Tested initially and after any design or process changes that may affect these parameters.CY7C164 CY7C166 CYPRESS AC Test Loads and Waveforms Rt 4810 R1 4812 SV Sv ALL INPUT PULSES OUTPUT OUTPUT 30 pF R2 5 pF Ra I 2552 I 2552 INCLUDING + = INCLUDING +t JIG AND ~ JIG AND ~ ~ SCOPE (a) Normal Load SCOPE (b) High-Z Load C164-6 Equivalent to: THEVENIN EQUIVALENT C164-5 1672 OUTPUT 1.73V Switching Characteristics Over the Operating Rangell 7164-12 | 7C164-15 | 7C164-20 | 7C164-25 | 7164-35 7C166-12 | 7C0166-15 7C166-20 | 7C166-25 7C166-35 Parameter Description Min. { Max. | Min. | Max. | Min. | Max. Min, | Max. | Min. | Max. | Unit READ CYCLE tre Read Cycle Time 120 15S 20 25 35 ns taA Address 10 Data Valid 12 15 20 25 35 ns toHa Output Hold from Address | 3 3 5 5 5 ns Change tack CE LOW to Data Valid 12 15 20 25 35 ns tpoE OE LOW to Data Valid | 7C166 6 10 10 12 15 ns tLZ0E OELOWtolowZ | 7C166] 0 3 3 3 3 ns tHZ0E OE HIGH to High Z 7C 166 7 8 8 10 12 ns tLZCE CE LOW to Low ZI7 3 3 5 5 5 ns tHZcE CE HIGH to High ZI7-8] 7 8 8 10 15 ns tpu CE LOW to Power-Up 0. / 0 0 0 0 ns tpp CE HIGH to Power-Down 12 15 20 20 20 ns WRITE CYCLE! twe Write Cycle Time 12 15 20 20 25 ns tscE CE LOW to Write End 8 12 15 20 25 ns taw Address Set-Up to Write End 9 12 15 20 25 ns tHa Address Hold from Write End 0 0 0 0 ns tsa Address Set-Up to Write Start 0 0 0 0 ns tpwe WE Pulse Width 8 12 15 15 20 ns tsp Data Set-Up to Write End 6. 10 10 10 Is ns tuD Data Hold from Write End 0 0 0 0 0 ns tLZWE WE HIGH to Low ZI 3 5 5 5 5 ns tHZWE WE LOW to High Z!7. 4) 6 7 7 7 10 ns Shaded area contains preliminary information. Notes; 6. Test conditions assume signal transition time of 5 ns or less, timing ref- 9. The internal write time of the memory is defined by the overlap of CE erence levels of 1.5V, input pulse levels of 0 tu 3.0V, and output loading of the specified Ig. /Topy and 30-pF load capacitance. At any given temperature and voltage condition, tyzg is less than tuzck for any given device. These parameters are guaranteed by de- sign and not 100% tested. tuzcr and tuzwe are specified with Cy = 5 pF as in part (b) in AC Test Loads. Transition is measured +500 mV fram steady-state volt- age. 2-90 LOW and WE LOW. Both signals must be LOW to initiate a write and either signal can terminate a write by going HIGH. The data input set- up and hold timing should be referenced to the rising edge of the signal that terminates the write.CY7C164 CYPRESS CV7C166 Switching Waveforms Read Cycle No. 1119. 11] tac ADDRESS xK pet_____ tan DATA OUT PREVIOUS DATA VALID Kx DATA VALID C164-7 Read Cycle No. 21/0 12} tro N / lace OE 70166 tpoe > tH20E tLz06 >Y IHZCE HIGH HIGH IMPEDANCE 77 IMPEDANCE DATA OUT << DATA VALID tizce + tey po Voc icc SUPPLY 50% 50% CURRENT ISB C164-8 Write Cycle No. 1 (WE Controlled)l !3} ADDRESS cE WE tsp DATA IN DATA VALID tHzwe =| tlzwe | HIGH IMPEDANCE DATA OUT DATA UNDEFINED > SX C164-9 Notes: 10. WE is HIGH for read cycle. 12. Address valid prior to or coincident with CE transition LOW. 11. Device is continuously selected, CE = Vy. (7C166: OE = Viz also). 13. 7C.166 only: Data I/O will be high impedance if OE = Vin.CY7C164 Switching Waveforms (continued) Write Cycle No. 2 (CE Controlled)l !3: 14] two ADDRESS a x tga tsce N taw ta y fpwe WES N Z WLLL * tp typ DATA IN DATA\\VALID HIGH IMPEDANCE DATA I/O C 164-10 Note: 14. If CE goes HIGH simultaneously with WE HIGH, the output remains in a high-impedance state. Typical DC and AC Characteristics NORMALIZED SUPPLY CURRENT NORMALIZED SUPPLY CURRENT OUTPUT SOURCE CURRENT vs, SUPPLY VOLTAGE vs. AMBIENT TEMPERATURE vs. OUTPUT VOLTAGE 1.4 1.2 120 oO oO 212 ~ 1.0 & 100 8 loc w 1410 2 08 x a ao 3 80 W 08 Hi 5 0.6 & 60 3 0.6 & 3 os go g 40 z 9. 2 5 0.2 Isg 0.2 E 20 0.0 0.0 5 9 4.0 45 5.0 5.5 6.0 55 25 125 0.0 1.0 2.0 3.0 4.0 SUPPLY VOLTAGE (V) AMBIENT TEMPERATURE (C) OUTPUT VOLTAGE (V) NORMALIZED ACCESS TIME NORMALIZED ACCESS TIME OUTPUT SINK CURRENT vs, SUPPLY VOLTAGE vs. AMBIENT TEMPERATURE ys. OUTPUT VOLTAGE 1.6 = 140 120 g 14 5 2 3 i 100 Ni S| 1.2 a > 80 Z Z ra x $ 2 = 60 & 10 a 9 = "| Voc = 5.0V 5 40 0.8 A E 20 o 0.8 0.6 0 4.0 45 5.0 55 6.0 -55 25 125 0.0 1.0 2.0 3.0 40 SUPPLY VOLTAGE (Vy) AMBIENT TEMPERATURE (C) OUTPUT VOLTAGE (V)CY7C164 CYPRESS VIC 16S Typical DC and AC Characteristics (continued) TYPICAL POWER-ON CURRENT TYPICAL ACCESS TIME CHANGE vs. SUPPLY VOLTAGE vs. OUTPUT LOADING NORMALIZED Icc vs. CYCLE TIME 3.0 30.0 1.25 - Voc = 5.0V 25 25.0 Ta = 26C g _ 8 Vin = 0.5V 2 20 = 20.0 8 1.00 N 2 N Zi5 < 150 = a4 = BR = fea Q 5 i 8 10 9 10.0 Voc = 4.5V 2 075 /~ 05 5.0 Ta = 25C | 0.0 0.50 00 10 20 30 40 5.0 0 200 400 600 9800 1000 10 20 30 40 SUPPLY VOLTAGE (V) CAPACITANCE (pF) CYCLE FREQUENCY (MHz} CY7C164 Truth Table CY7C166 Truth Table CE | WE | Input/Output Mode CE | WE | OE | Input/Output Mode H | X | HighZ Deselect/Power-Down H | X | X | HighZ Deselect/Power-Down L H | Data Out Read L H L | Data Out Read L L | Data In Write L L | H | DataIn Write L H H High Z Write Address Designators Address Address | CY 70164 Pin | CY7C166 Pin Name Function Number Number AS X3 1 ! Ab x4 2 2 Al x5 3 3 A8 X6 4 4 AY x7 5 5 Ald Ys 6 6 All y4 7 7 Al2 yo 8 8 Al3 Yl 9 9 AO Y2 17 19 Al 3 18 20 A2 i) 19 21 A3 XI 20 22 A4 x2 21 23CY7C164 CY7C166 Ordering Information Speed Package Operating (ns) Ordering Code Name Package Type Range 12 CY7C16412PC P9 22-Lead (300-Mil) Molded DIP | Commercial CY7C164-12VC V13 24-Lead Molded SOJ 15 CY7C16415PC P9 22-Lead (300-Mil) Molded DIP } Commercial CY7C164-15VC V13 24-Lead Molded SOJ 20 CY7C16420PC P9 22-Lead (300-Mil) Molded DIP | Commercial CY7C16420VC V13 24-Lead Molded SOJ 25 CY7C16425PC Pd 22-Lead (300-Mil) Molded DIP | Commercial CY7C16425VC Vi13 24-Lead Molded SOJ 35 CY7C164-35PC Pg 22-Lead (300-Mil) Molded DIP | Commercial CY7C16435VC vi13 24-Lead Molded SOJ Speed Package Operating (ns) Ordering Code Name Package Type Range 12 CY7C16612PC P13 24-Lead (300-Mil) Molded DIP | Commercial CY7C166~12VC vi13 24-Lead Molded SOJ 15 CY7C166-15PC P13 24-Lead (300-Mil) Molded DIP | Commercial CY7C16615VC V13 24-Lead Molded SOJ 20 CY7C16620PC P13 24-Lead (300-Mil) Molded DIP | Commercial CY7C16620VC Vi13 24-Lead Molded SOJ 25 CY7C166-25PC P13 24-Lead (300-Mil) Molded DIP | Commercial CY7C166-25VC V13 24-Lead Molded SOJ 35 CY7C16635PC P13 24-Lead (300-Mil) Molded DIP | Commercial CY7C166-35VC Via 24-Lead Molded SOJ Shaded areas contain preliminary information. Document #: 3800032-I