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M48T36 Datasheet(PDF) 3 Page - STMicroelectronics

Part # M48T36
Description  CMOS 32K x 8 TIMEKEEPER SRAM
PDF  17 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M48T36 Datasheet(HTML) 3 Page - STMicroelectronics

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Mode
VCC
E
G
W
DQ0-DQ7
Power
Deselect
4.5V to 5.5V
VIH
X
X
High Z
Standby
Write
VIL
XVIL
DIN
Active
Read
VIL
VIL
VIH
DOUT
Active
Read
VIL
VIH
VIH
High Z
Active
Deselect
VSO to VPFD (min)
(2)
X
X
X
High Z
CMOS Standby
Deselect
≤ VSO
X
X
X
High Z
Battery Back-up Mode
Notes:1. X = VIH or VIL
2. See Table 6 for details.
Table 3. Operating Modes (1)
AI01626
LITHIUM
CELL
OSCILLATOR AND
CLOCK CHAIN
VPFD
RST
VCC
VSS
32,768 Hz
CRYSTAL
VOLTAGE SENSE
AND
SWITCHING
CIRCUITRY
8 x 8 BiPORT
SRAM ARRAY
32,752 x 8
SRAM ARRAY
A0-A14
DQ0-DQ7
E
W
G
POWER
IRQ/FT
WDI
8 x 8 ALARM
WATCHDOG
FLAGS
BATTERY LOW
Figure 3. Block Diagram
3/17
M48T36



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