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M48Z129Y Datasheet(PDF) 1 Page - STMicroelectronics

Part No. M48Z129Y
Description  3.3V/5V 1 Mbit 128Kb x8 ZEROPOWER SRAM
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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M48Z129Y Datasheet(HTML) 1 Page - STMicroelectronics

 
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June 2000
M48Z129Y
M48Z129V
3.3V/5V 1 Mbit (128Kb x8) ZEROPOWER® SRAM
s
INTEGRATED ULTRA LOW POWER SRAM,
POWER-FAIL CONTROL CIRCUIT, and
BATTERY
s
AUTOMATIC POWER-FAIL CHIP DESELECT
AND WRITE PROTECTION
s
MICROPROCESSOR POWER-ON RESET
(RESET VALID EVEN DURING BATTERY
BACK-UP MODE)
s
BATTERY LOW PIN - PROVIDES WARNING
OF BATTERY END-OF-LIFE
s
WRITE PROTECT VOLTAGES
(VPFD = Power-fail Deselect Voltage):
– M48Z129Y: 4.2V
≤ VPFD ≤ 4.5V
– M48Z129V: 2.7V
≤ VPFD ≤ 3.0V
s
CONVENTIONAL SRAM OPERATION;
UNLIMITED WRITE CYCLES
s
10 YEARS OF DATA RETENTION IN THE
ABSENCE OF POWER
s
PIN AND FUNCTION COMPATIBLE WITH
JEDEC STANDARD 128Kb x 8 SRAMS
s
SELF CONTAINED BATTERY IN DIP
PACKAGE
Figure 1. Logic Diagram
AI02309
17
A0-A16
DQ0-DQ7
VCC
M48Z129Y
M48Z129V
G
VSS
8
E
W
RST
BL
Table 1. Signal Names
A0-A16
Address Inputs
DQ0-DQ7
Data Inputs / Outputs
E
Chip Enable
G
Output Enable
W
Write Enable
RST
Reset Output (Open Drain)
BL
Battery Low Output (Open
Drain)
VCC
Supply Voltage
VSS
Ground
32
1
PMDIP32 (PM)
Module


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