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M41ST95W 数据表(PDF) 27 Page - STMicroelectronics

部件名 M41ST95W
功能描述  5.0 or 3.0V, 512 bit (64 bit X 8) Serial RTC (SPI) SRAM and NVRAM Supervisor
PDF  35 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

M41ST95W 数据表(HTML) 27 Page - STMicroelectronics

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M41ST95Y*, M41ST95W
Table 13. DC Characteristics
Note: 1. Valid for Ambient Operating Temperature: TA = –40 to 85°C; VCC = 4.5 to 5.5V or 2.7 to 3.6V (except where noted).
2. Measured with VOUT and ECON open.
3. RSTIN1 and RSTIN2 internally pulled-up to VCC through 100KΩ resistor. WDI internally pulled-down to VSS through 100KΩ resistor.
4. Outputs Deselected.
5. External SRAM must match RTC SUPERVISOR chip VCC specification.
6. For rechargeable back-up, VBAT(max) may be considered VCC.
7. For PFO, F32k, and SQW pins (CMOS).
8. Conditioned output (ECON) can only sustain CMOS leakage current in the battery back-up mode. Higher leakage currents will re-
duce battery life.
9. For IRQ/FT/OUT, RST pins (Open Drain); if pulled-up to supply other than VCC, this supply must be equal to, or less than 3.0V when
VCC = 0V (during battery back-up mode).
Sym
Parameter
Test
Condition(1)
M41ST95Y
M41ST95W
Unit
Min
Typ
Max
Min
Typ
Max
IBAT
(2)
Battery Current OSC
ON
TA = 25°C,
VCC = 0V,
VBAT = 3V
400
550
400
550
nA
Battery Current OSC
OFF
50
50
nA
ICC1
Supply Current
f = 2MHz
2
2
mA
ICC2
Supply Current
(Standby)
SCL, SDI =
VCC – 0.3V
1.4
1.4
mA
ILI
(3)
Input Leakage Current
0V
≤ VIN ≤
VCC
±1
±1
µA
Input Leakage Current
(PFI)
–25
2
25
–25
2
25
nA
ILO
(4)
Output Leakage
Current
0V
≤ VIN ≤
VCC
±1
±1
µA
IOUT1
(5)
VOUT Current (Active)
VOUT1 >
VCC – 0.3V
175
100
mA
IOUT2
VOUT Current (Battery
Back-up)
VOUT2 >
VBAT – 0.3V
100
100
µA
VIH
Input High Voltage
0.7VCC
VCC + 0.3
0.7VCC
VCC + 0.3
V
VIL
Input Low Voltage
–0.3
0.3VCC
–0.3
0.3VCC
V
VBAT
Battery Voltage
2.5
3.0
3.5(6)
2.5
3.0
3.5(6)
V
VOH
Output High Voltage(7)
IOH = –1.0mA
2.4
2.4
V
Power Supply Voltage
(Open Drain)
IRQ/FT/OUT,
RST
5.5
3.6
V
VOHB
(8)
VOH (Battery Back-up)
IOUT2 =
–1.0µA
2.5
2.9
3.5
2.5
2.9
3.5
V
VOL
Output Low Voltage
IOL = 3.0mA
0.4
0.4
V
Output Low Voltage
(Open Drain)(9)
IOL = 10mA
0.4
0.4
V
VPFD
Power Fail Deselect
4.20
4.40
4.50
2.55
2.60
2.70
V
VPFI
PFI Input Threshold
VCC = 5V(Y)
VCC = 3V(W)
1.225
1.250
1.275
1.225
1.250
1.275
V
PFI Hysteresis
PFI Rising
20
70
20
70
mV
VSO
Battery Back-up
Switchover
2.5
2.5
V



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