M48Z58Y ST Microelectronics, M48Z58Y Datasheet
M48Z58Y
Manufacturer Part Number
M48Z58Y
Description
64 Kbit 8Kb x 8 ZEROPOWER SRAM
Manufacturer
ST Microelectronics
Datasheet
1.M48Z58Y.pdf
(17 pages)
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M48Z58Y-70MH1
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ST
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20 000
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Part Number:
M48Z58Y-70MH1E
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STMicroelectronics
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135
Part Number:
M48Z58Y-70MH1E
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Part Number:
M48Z58Y-70MH6
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Part Number:
M48Z58Y-70PC1
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5 913
DESCRIPTION
The M48Z58/58Y ZEROPOWER
8 non-volatile static RAM that integrates power-fail
deselect circuitry and battery control logic on a
single die. The monolithic chip is available in two
special packages to provide a highly integrated
battery backed-up memory solution.
Table 1. Signal Names
March 1999
A0-A12
DQ0-DQ7
E
G
W
V
V
INTEGRATED ULTRA LOW POWER SRAM,
POWER-FAIL CONTROL CIRCUIT and
BATTERY
READ CYCLE TIME EQUALS WRITE CYCLE
TIME
AUTOMATIC POWER-FAIL CHIP DESELECT and
WRITE PROTECTION
WRITE PROTECT VOLTAGES
(V
– M48Z58: 4.50V
– M48Z58Y: 4.20V
SELF-CONTAINED BATTERY in the CAPHAT
DIP PACKAGE
PACKAGING INCLUDES a 28-LEAD SOIC
and SNAPHAT
(to be Ordered Separately)
SOIC PACKAGE PROVIDES DIRECT
CONNECTION for a SNAPHAT TOP which
CONTAINS the BATTERY and CRYSTAL
PIN and FUNCTION COMPATIBLE with
JEDEC STANDARD 8K x 8 SRAMs
CC
SS
PFD
= Power-fail Deselect Voltage):
Address Inputs
Data Inputs / Outputs
Chip Enable
Output Enable
Write Enable
Supply Voltage
Ground
®
TOP
V
PFD
V
PFD
4.75V
4.50V
®
RAM is an 8K x
64 Kbit (8Kb x 8) ZEROPOWER
Figure 1. Logic Diagram
28
SNAPHAT (SH)
A0-A12
SOH28 (MH)
Battery
W
G
E
1
13
V CC
V SS
M48Z58Y
M48Z58
28
Battery CAPHAT
PCDIP28 (PC)
M48Z58Y
1
M48Z58
8
®
DQ0-DQ7
SRAM
AI01176B
1/17
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