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