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AT27C020-90TI Datasheet(PDF) 4 Page - ATMEL Corporation |
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AT27C020-90TI Datasheet(HTML) 4 Page - ATMEL Corporation |
4 / 14 page 4 0570G–EPROM–12/07 AT27C020 Notes: 1. X can be V IL or VIH. 2. Refer to Programming Characteristics. 3. VH = 12.0 ± 0.5V. 4. Two identifier bytes may be selected. All Ai inputs are held low (V IL) except A9, which is set to VH and A0, which is toggled low (VIL) to select the Manufacturer’s Identification byte and high (VIH) to select the Device Code byte. Notes: 1. VCC must be applied simultaneously or before VPP, and removed simultaneously or after VPP. 2. VPP may be connected directly to VCC except during programming. The supply current would then be the sum of ICC and IPP. 6. Operating Modes Mode/Pin CE OE PGM Ai V PP Outputs Read V IL V IL X(1) Ai X D OUT Output Disable X VIH X X X High-Z Standby V IH X X X X High-Z Rapid Program(2) VIL VIH VIL Ai VPP DIN PGM Verify VIL VIL VIH Ai VPP DOUT PGM Inhibit V IH XX X V PP High-Z Product Identification(4) V IL V IL X A9 = VH (3) A0 = V IH or VIL A1 - A17 = VIL X Identification Code 7. DC and AC Operating Conditions for Read Operation AT27C020 -55 -90 Operating Temperature (Case) Ind. -40 ° C - 85° C-40° C - 85° C Auto. -40 ° C - 125° C V CC Power Supply 5V ± 10% 5V ± 10% 8. DC and Operating Characteristics for Read Operation Symbol Parameter Condition Min Max Units I LI Input Load Current V IN = 0V to VCC (Com., Ind.) ±1.0 µA I LO Output Leakage Current V OUT = 0V to VCC (Com., Ind.) ±5.0 µA IPP (2) VPP (1) Read/Standby Current VPP = VCC ±10 µA ISB VCC (1) Standby Current I SB1 (CMOS), CE = VCC ± 0.3V 100 µA I SB2 (TTL), CE = 2.0 to VCC + 0.5V 1.0 mA ICC VCC Active Current f = 5 MHz, IOUT = 0 mA, CE = VIL 25 mA V IL Input Low Voltage -0.6 0.8 V V IH Input High Voltage 2.0 V CC + 0.5 V VOL Output Low Voltage IOL = 2.1 mA 0.4 V V OH Output High Voltage I OH = -400 µA 2.4 V |
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