STMicroelectronics M48Z30Y
The M48Z30/30Y 32K x 8 ZEROPOWER® RAM is a non-volatile 262,144 bit Static RAM organized as 32,768 words by 8 bits. The device combines an internal lithium battery and a full CMOS SRAM in a plastic 28 pin DIP Module.DESCRIPTION
The ZEROPOWER Table 1. Signal Names A0 - A14 Address Inputs DQ0 - DQ7 Data Inputs / Outputs E Chip Enable G Output Enable W Write Enable VCC Supply Voltage VSS Ground July 1994 1/12 M48Z30, M48Z30Y Table 2.ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit TA Ambient Operating Temperature 0 to 70 °C TSTG Storage Temperature (VCC Off) –40 to 70 °C TBIAS Temperature Under Bias –10 to 70 °C TSLD Lead Soldering Temperature for 10 seconds 260 °C VIO Input or Output Voltages –0.3 to 7 V VCC Supply Voltage –0.3 to 7 V Note: Stresses greater than those listed under ”ABSOLUTE MAXIMUM RATINGS
” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to the absolute maximum ratings conditions for extended periods of time may affect reliability. CAUTION: Negative undershoots below –0.3 volts are not allowed on any pin while in the Battery Back-up mode.