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M48T128Y fiches techniques PDF

ST Microelectronics - 1 Mbit (128 Kb x 8) TIMEKEEPER SRAM

Numéro de référence M48T128Y
Description 1 Mbit (128 Kb x 8) TIMEKEEPER SRAM
Fabricant ST Microelectronics 
Logo ST Microelectronics 





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M48T128Y fiche technique
M48T128Y
M48T128V*
5.0 or 3.3V, 1 Mbit (128 Kb x 8) TIMEKEEPER® SRAM
FEATURES SUMMARY
INTEGRATED, ULTRA LOW POWER SRAM,
REAL TIME CLOCK, POWER-FAIL
CONTROL CIRCUIT, BATTERY, AND
CRYSTAL
BCD CODED YEAR, MONTH, DAY, DATE,
HOURS, MINUTES, AND SECONDS
AUTOMATIC POWER-FAIL CHIP
DESELECT AND WRITE PROTECTION
WRITE PROTECT VOLTAGES
(VPFD = Power-fail Deselect Voltage):
– M48T128Y: VCC = 4.5 to 5.5V
4.1V VPFD 4.5V
– M48T128V*: VCC = 3.0 to 3.6V
2.7V VPFD 3.0V
CONVENTIONAL SRAM OPERATION;
UNLIMITED WRITE CYCLES
SOFTWARE CONTROLLED CLOCK
CALIBRATION FOR HIGH ACCURACY
APPLICATIONS
10 YEARS OF DATA RETENTION AND
CLOCK OPERATION IN THE ABSENCE OF
POWER
SELF-CONTAINED BATTERY AND
CRYSTAL IN THE 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 of 3.3V version.
February 2005
1/22

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