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M48Z18-100MH1 Datasheet(PDF) 1 Page - STMicroelectronics

Part # M48Z18-100MH1
Description  64 Kbit 8Kb x 8 ZEROPOWER SRAM
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M48Z18-100MH1 Datasheet(HTML) 1 Page - STMicroelectronics

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M48Z08
M48Z18
64 Kbit (8Kb x 8) ZEROPOWER
® SRAM
March 1999
1/18
INTEGRATED ULTRA LOW POWER SRAM,
POWER-FAIL CONTROL CIRCUIT and
BATTERY
UNLIMITED WRITE CYCLES
READ CYCLE TIME EQUALS WRITE CYCLE
TIME
AUTOMATIC POWER-FAIL CHIP DESELECT and
WRITE PROTECTION
WRITE PROTECT VOLTAGES
(VPFD = Power-fail Deselect Voltage):
– M48Z08: 4.50V
≤ VPFD ≤ 4.75V
– M48Z18: 4.20V
≤ VPFD ≤ 4.50V
SELF-CONTAINED BATTERY in the CAPHAT
DIP PACKAGE
PACKAGING INCLUDES a 28 LEAD SOIC
and SNAPHAT
® TOP (to be Ordered
Separately)
SOIC PACKAGE PROVIDES DIRECT
CONNECTION for a SNAPHAT TOP which
CONTAINS the BATTERY
PIN and FUNCTION COMPATIBLE with the
DS1225 and JEDEC STANDARD 8K x 8
SRAMs
DESCRIPTION
The M48Z08/18 ZEROPOWER® RAM is an 8K x
8 non-volatile static RAM which is pin and func-
tional compatible with the DS1225. The monolithic
chip is available in two special packages to provide
a highly integrated battery backed-up memory so-
lution.
AI01022
13
A0-A12
W
DQ0-DQ7
VCC
M48Z08
M48Z18
G
VSS
8
E
Figure 1. Logic Diagram
A0-A12
Address Inputs
DQ0-DQ7
Data Inputs / Outputs
E
Chip Enable
G
Output Enable
W
Write Enable
VCC
Supply Voltage
VSS
Ground
Table 1. Signal Names
28
1
PCDIP28 (PC)
Battery CAPHAT
SNAPHAT (SH)
Battery
28
1
SOH28 (MH)


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