M48Z129Y_05 Datasheet, PDF (1/16 Pages) STMicroelectronics – 5.0V OR 3.3V, 1 Mbit (128 Kb x 8) ZEROPOWER SRAM

M48Z129Y*
M48Z129V
5.0V OR 3.3V, 1 Mbit (128 Kb x 8) ZEROPOWER^® SRAM
FEATURES SUMMARY
■ INTEGRATED, ULTRA LOW POWER SRAM,
POWER-FAIL CONTROL CIRCUIT, AND
BATTERY
■ CONVENTIONAL SRAM OPERATION;
UNLIMITED WRITE CYCLES
■ 10 YEARS OF DATA RETENTION IN THE
ABSENCE OF POWER
■ MICROPROCESSOR POWER-ON RESET
(RESET VALID EVEN DURING BATTERY
BACK-UP MODE)
■ BATTERY LOW PIN - PROVIDES WARNING
OF BATTERY END-OF-LIFE
■ AUTOMATIC POWER-FAIL CHIP
DESELECT AND WRITE PROTECTION
■ WRITE PROTECT VOLTAGES
(V_PFD = Power-fail Deselect Voltage):
– M48Z129Y: V_CC = 4.5 to 5.5V
4.2V ≤ V_PFD ≤ 4.5V
– M48Z129V: V_CC = 3.0 to 3.6V
2.7V ≤ V_PFD ≤ 3.0V
■ SELF-CONTAINED BATTERY IN THE
CAPHAT™ DIP PACKAGE
■ PIN AND FUNCTION COMPATIBLE WITH
JEDEC STANDARD 128K x 8 SRAMs
Figure 1. 32-pin PMDIP Module
32
1
PMDIP32 (PM)
Module
* Contact local ST sales office for availability.
March 2005
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