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M41ST87WMX6 数据表(PDF) 42 Page - STMicroelectronics

部件名 M41ST87WMX6
功能描述  5.0 V and 3.3/3.0 V secure serial RTC and NVRAM supervisor with tamper detection and 128 bytes of clearable NVRAM
PDF  48 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

M41ST87WMX6 数据表(HTML) 42 Page - STMicroelectronics

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DC and AC parameters
M41ST87Y, M41ST87W
42/48
Table 17.
DC characteristics
Sym
Parameter
Test condition(1)
1.
Valid for ambient operating temperature: TA = –40 to 85°C; VCC = 4.5 to 5.5 V or 2.7 to 3.6 V (except where noted).
M41ST87Y
M41ST87W
Unit
Min
Typ
Max
Min
Typ
Max
IBAT
(2)
2.
Measured with VOUT and ECON open. Not including tamper detection current (see Table 4 on page 22).
Battery current
OSC ON
TA = 25°C, VCC = 0 V,
VBAT = 3 V
500
700
500
700
nA
Battery current
OSC OFF
50
50
nA
ICC1
Supply current
f = 400 kHz
1.4
0.75
mA
ICC2
Supply current
(standby)
SCL, SDA = VCC – 0.3 V
1
0.50
mA
ILI
(3)
3.
RSTIN1 and RSTIN2 internally pulled-up to VCC through 100 KΩ resistor. WDI internally pulled-down to VSS through
100 K
Ω resistor.
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 – 0.3 V
175
100
mA
IOUT2
VOUT current
(battery backup)
VOUT2 > VBAT – 0.3 V
100
100
µA
VIH
Input high
voltage
0.7V
CC
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
(7)
Output high
voltage
IOH = –1.0 mA
2.4
2.4
V
Pull-up supply
voltage
(open drain)
IRQ/OUT, RST, F32k
5.5
3.6
V
VOHB
(8) VOH (battery
backup)
IOUT2 = –1.0 µA
(9)
2.9
2.9
V
VOL
Output low
voltage
IOL = 3.0 mA
0.4
0.4
V
Output low
voltage
(open drain)(10)
IOL = 10 mA
0.4
0.4
V
VPFD
Power fail
deselect
THS bit = 0
4.20
4.35
4.50
2.55
2.62
2.70
V
THS bit = 1
4.50
4.60
4.75
2.80
2.88
3.00
V
VPFI1
PFI input
threshold
VCC = 5 V(Y)
VCC = 3 V(W)
1.225
1.250
1.275
1.225
1.250
1.275
V
PFI hysteresis
PFI rising
20
70
20
70
mV
VPFI2
PFI input
threshold
VCC = 5 V(Y)
VCC = 3 V(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 backup
switchover
2.5
2.5
V
RSW
Switch
resistance on
tamper pin
500
500
W



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