OKI semiconductor MSM27C128AS l | 16384 x 8 BIT UV ERASABLE ELECTRICALLY PROGRAMMABLE READ-ONLY MEMORY GENERAL DESCRIPTION The MSM27C128 is a 16384 words X 8 bit ultraviolet erasable and electrically programmable read-only memory. Users can freely prepare the memory content, which can be easily changed, so the MSM27C1 28 is ideal for microprocessor programs, etc. The MSM27C128 is manufactured by the CMOS double silicon gate technology and is contained in the 28 pin package. FEATURES e@ +5V single power supply @ 16384 words x 8 bit configuration @ Access time: MAX200 ns (MSM27C 128-20) MAX250 ns (MSM27C1 28-25) MAX300 ns (MSM27C1 28-30) @ Power consumption: MAX165 mW (during operation) MAX0.55 mW (during stand-by) e@ Perfect static operation INPUT/OUTPUT TTL level (three state output) PIN CONFIGURATION (Top View) Vpep GC] MS 28) Voc Ar] 27) PGM A> [3] [25] Ass As [] 25] As As & [24] Ao Aa (e] 23) Ai As 7] [22] OE Ae & 21] Ato Al 26} CE Ao [19] [3] 0- Oo 4] Os of 7] Os oO. [16] Ou GND 15) Os FUNCTIONAL BLOCK DIAGRAM Output buffers Memory matrix 16384 x 8bit CE *| CE OE OE This specification may be changed without notification. Voc + Vpp + GND 407ws EPROM -MSM27C128AS a FUNCTION TABLE ims | GE OE PGM Vpp V cc (20) (22) (27) (1) (28) Outputs Mode Read VIL VIL VIH +5V +5V Dout Output Disable VIL VIH VIH +5V +5V High impedance Stand-by VIH - - +5V +5V High impedance Program Vit - VIL +21V +6V DIN Program Verify VIL ViL VIH +21V +6V Dout Program Inhibit VIH = = +21V +6V High impedance ; Can be either Vy, or Viy ABSOLUTE MAXIMUM RATINGS Temperature Under Bias Or 10C ~ 80C Storage Temperature TStg ... 0... cece eee ee 6C ~ 125C All Input/Output Voltages VIN. VOUT eee eee eee ee VIN = 0.6V ~ 13.5V, VouT =0.3V ~Vcc +1V Vcc Supply Voltage A (6; on 0.3V ~7V Program Voltage VPP ooo. cece cece eee eee 0.6V ~ 23V Power Assembly Voltage PO. cece eee cece eee ee eee 1.5W The voltage with respect to GND. ELECTRICAL CHARACTERISTICS <READ OPERATION > RECOMMENDED OPERATION CONDITION Limit : Operating I R k bol Parameter Symbol Min. Tye. | Max Temperature emarks Symbo Vcc Power Supply Voltage Voc 4.5 5.0 5.5 Vv Vpp Voltage Vpp 3.8 5.0 6.2 + OV Voc=5V+10% oc ~ 70C TY H Level Input _ Vpp=Vcc+0.7V Voltage VIH 2.00 6.5 Vv L Level input Voltage VIL 0.1 - 0.8 V The voltage with respect to GND 408DC CHARACTERISTICS (Voc =5V+10%, Vpp = Voc +0.7V, Ta = 0C ~ 70C) # EPROM -MSM27C128AS a Limits Parameter Symbol Conditions Unit Min. Typ. Max. Input Leakage Current Iu VIN = 5.5V - - 10 pA Output Leakage Current iLO Vout = 5.5V - - 10 | pA Voc Power Current (Stand-by) Icc, | CE=ViIn=Vec - - 100 | pA Vcc Power Current (Operation) Icc> CE=ViL - - 30 mA Vpp Power Current Ipp: Vpp = Vcc+0.7V - - 100 pA Input Voltage H Level VIH - 2.0 Voc Vv Input Voltage L Level VIL _ ~0.1 - 0.8 Vv Output Voltage H Level VOH IOH = 400 pA 40 - - Vv Output Voltage L Level VOL lol =2.1 mA - - 0.45 V AC CHARACTERISTICS (Voc =5V+10%, Vpp = Vcc +0.7V, Ta = 0C ~ 70C} 270128-20 |27C1 28-25 |27C 128-30 Parameter Symbol Conditions Unit Min.; Max. | Min. | Max. | Min. | Max. . CE =OE=ViL, _ Address Access Time tacc | Pam = Vi 200 250 300 ns aE , OE =ViL, T t - - ~ CE Access Time CE PGM = Vin 200 250 300 | ns ; CE=Vi;, T t DGN - 7 - |. OE Access Time OE PGM = Vin 100 1 20 ns Output Disable Time | tp SG wa o | 60} 0 | 85|] 0 | 105] ns Measurement condition Input pulse level Input timing reference level Output load Output timing reference level 0.45V and 2.4V 0.8V and 2.0V 0.8V and 2.0V 1TTL GATE + 100pF 409= EPROM -MSM27C128AS @ TIME CHART y Address input xX h GE No tcE OE \ toe tor 410a EPROM -MSM27C128AS a DC CHARACTERISTICS (Voc =6V+0.25V, Vpp = 21V+0.5V, Ta = 25C+5C) Limits Parameter Symbol Conditions Unit Min. Typ. Max. Input Leakage Current ILI VIN =5.5V = - 10 BA Vpp Power Current Ipp CE = PGM = VIL - - 30 mA Vcc Power Current loc - - - 30 mA Input Voltage H Level VIH ~ 2.0 - |Voctt] V Input Voltage L Level VIL - -0.1 - 0.8 Vv Output Voltage H Level VOH IOH =400 pA 2.4 - - V Output Voltage L Level VOL lol =2.1 mA - - 0.45 V AC CHARACTERISTICS (Voc = 6V+0.25V, Vpp = 21V+0.5V, Ta = 25C+5C) Limits Parameter Symbol Conditions Unit Min. Typ. Max. Address Set-up Time tas - 2 - - us OE Set-up Time toes - 2 - - us Data Set-up Time tos - 2 - - ys Address Hold Time tAH - 0 - - ps Data Hold Time tpH - 2 - - us Flot bee to Output tpFP _ 0 _ 130 ns Vpp Power Set-up Time tvs ~ 2 _ _ us PGM Initial Program Pulse Width tpw - 0.95 1.0 1.05 ms PGM Overprogram Pulse Width topw - 3.8 - 63 CE Set-up Time tces ~ 2 - - Bs Data Valid from OE toe - - - 150 ns 411a EPROM -MSM27C128AS s TIME CHART / \ Address x ADDRESS N xX 1 A wtas Data ~< DATA INPUT \_ input/output t Z Ke tos > / Vpp / _ he tys CE \ fo K /| he-tCES> PGM\ tbH toPw tOES tpw ALC Y OE } CAPACITANCE (Ta = 25C, f = 1 MHz) Parameter Symbol Conditions Min. Typ. Max. Unit. Input Capacitance CIN VIN =OV - 4 6 pF Output Capacitance Cout VouT =OV - 8 12 pF 412