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M48T251Y Datasheet(PDF) 19 Page - STMicroelectronics

Part # M48T251Y
Description  5.0 or 3.3V, 4096K TIMEKEEPER SRAM with PHANTOM
PDF  24 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M48T251Y Datasheet(HTML) 19 Page - STMicroelectronics

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M48T251Y, M48T251V
Table 11. DC Characteristics
Note: 1. Valid for Ambient Operating Temperature: TA = 0 to 70°C; VCC = 4.5 to 5.5V or 3.0 to 3.6V (except where noted).
2. RST (Pin 1) has an internal pull-up resistor.
3. All voltages are referenced to Ground.
Sym
Parameter(1)
Test Condition
M48T251Y
M48T251V
Unit
–70
–85
Min
Typ
Max
Min
Typ
Max
ILI
(2)
Input Leakage Current
0V
≤ VIN ≤ VCC
±1
±1
µA
ILO
Output Leakage Current
0V
≤ VOUT ≤ VCC
±1
±1
µA
ICC1
Supply Current
85
50
mA
ICC2
Supply Current (TTL
Standby)
CE = VIH
510
5
7
mA
ICC3
VCC Power Supply
Current
CE = VCCI – 0.2
35
2
3
mA
VIL
(3)
Input Low Voltage
–0.3
0.8
–0.3
0.6
V
VIH
(3)
Input High Voltage
2.2
VCC + 0.3
2.2
VCC + 0.3
V
VOL
Output Low Voltage
IOL = 2.0 mA
0.4
0.4
V
VOH
Output High Voltage
IOH = –1.0 mA
2.4
2.4
V
VPFD
(3)
Power Fail Deselect
4.25
4.37
4.50
2.80
2.97
V
VSO
(3)
Battery Back-up
Switchover
VBAT
2.5
V



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