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28C64AF-25SO Datasheet(PDF) 2 Page - Microchip Technology |
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28C64AF-25SO Datasheet(HTML) 2 Page - Microchip Technology |
2 / 8 page 28C64A DS11109H-page 2 © 1996 Microchip Technology Inc. 1.0 ELECTRICAL CHARACTERISTICS 1.1 MAXIMUM RATINGS* VCC and input voltages w.r.t. VSS ....... -0.6V to + 6.25V Voltage on OE w.r.t. VSS ..................... -0.6V to +13.5V Voltage on A9 w.r.t. VSS ...................... -0.6V to +13.5V Output Voltage w.r.t. VSS ................ -0.6V to VCC+0.6V Storage temperature .......................... -65˚C to +125˚C Ambient temp. with power applied ....... -50˚C to +95˚C *Notice: Stresses above those listed under “Maximum Ratings” may cause permanent damage to the device. This is a stress rat- ing only and functional operation of the device at those or any other conditions above those indicated in the operation listings of this specification is not implied. Exposure to maximum rating con- ditions for extended periods may affect device reliability. TABLE 1-1: PIN FUNCTION TABLE Name Function A0 - A12 Address Inputs CE Chip Enable OE Output Enable WE Write Enable I/O0 - I/O7 Data Inputs/Outputs RDY/Busy Ready/Busy VCC +5V Power Supply VSS Ground NC No Connect; No Internal Connection NU Not Used; No External Connection is Allowed TABLE 1-2: READ/WRITE OPERATION DC CHARACTERISTIC VCC = +5V ±10% Commercial (C): Tamb = 0˚C to +70˚C Industrial (I): Tamb = -40˚C to +85˚C Parameter Status Symbol Min Max Units Conditions Input Voltages Logic ‘1’ Logic ‘0’ VIH VIL 2.0 -0.1 Vcc+1 0.8 V V Input Leakage — ILI -10 10 µAVIN = -0.1V to Vcc +1 Input Capacitance — CIN —10 pF VIN = 0V; Tamb = 25˚C; f = 1 MHz (Note 2) Output Voltages Logic ‘1’ Logic ‘0’ VOH VOL 2.4 0.45 V V IOH = -400 µA IOL = 2.1 mA Output Leakage — ILO -10 10 µAVOUT = -0.1V to Vcc +0.1V Output Capacitance — COUT —12 pF VIN = 0V; Tamb = 25˚C; f = 1 MHz (Note 2) Power Supply Current, Active TTL input ICC — 30 mA f = 5 MHz (Note 1) VCC = 5.5V Power Supply Current, Standby TTL input TTL input CMOS input ICC(S)TTL ICC(S)TTL ICC(S)CMOS —2 3 100 mA mA µA CE = VIH (0˚C to +70˚C) CE = VIH (-40˚C to +85˚C) CE = VCC-0.3 to Vcc +1 Note 1: AC power supply current above 5MHz: 2mA/MHz. 2: Not 100% tested. |
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