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M48Z09 fiches techniques PDF

ST Microelectronics - CMOS 8K x 8 ZEROPOWER SRAM

Numéro de référence M48Z09
Description CMOS 8K x 8 ZEROPOWER SRAM
Fabricant ST Microelectronics 
Logo ST Microelectronics 





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M48Z09 fiche technique
M48Z09
M48Z19
CMOS 8K x 8 ZEROPOWER SRAM
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
POWER-FAIL INTERRUPT
CHOICE of TWO WRITE PROTECT
VOLTAGES:
– M48Z09: 4.5V VPFD 4.75V
– M48Z19: 4.2V VPFD 4.5V
SELF CONTAINED BATTERY in the CAPHAT
DIP PACKAGE
11 YEARS of DATA RETENTION in the
ABSENCE of POWER
PIN and FUNCTION COMPATIBLE with the
MK48Z09, 19 and JEDEC STANDARD 8K x 8
SRAMs
28
1
PCDIP28 (PC)
Battery CAPHAT
Figure 1. Logic Diagram
DESCRIPTION
The M48Z09,19 ZEROPOWER® RAM is an 8K x 8
non-volatile static RAM which is pin and function
compatible with the MK48Z09,19.
A special 28 pin 600mil DIP CAPHATpackage
houses the M48Z09,19 silicon with a long life lith-
ium button cell to form a highly integrated battery
backed-up memory solution.
Table 1. Signal Names
A0-A12
Address Inputs
DQ0-DQ7 Data Inputs / Outputs
INT Power Fail Interrupt
E1 Chip Enable 1
E2 Chip Enable 2
G Output Enable
W Write Enable
VCC Supply Voltage
VSS Ground
VCC
13
A0-A12
8
DQ0-DQ7
W
M48Z09
E1 M48Z19 INT
E2
G
VSS
AI01184
November 1994
1/13

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