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M41ST87WMX6F 数据表(PDF) 43 Page - STMicroelectronics

部件名 M41ST87WMX6F
功能描述  5.0 and 3.3/3.0 V secure serial RTC and NVRAM supervisor with tamper detection and 128 bytes of clearable NVRAM
PDF  54 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

M41ST87WMX6F 数据表(HTML) 43 Page - STMicroelectronics

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M41ST87W
DC and AC parameters
DocID9497 Rev 11
43/54
Table 19: DC characteristics
Sym
Parameter
Test condition
(1)
M41ST87Y
M41ST87W
Unit
Min
Typ
Max
Min
Typ
Max
IBAT
(2)
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)
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
0.7VCC
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
VCC
2.5
3.0
VCC
V
VOH
(6)
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
(7)
VOH (battery backup)
IOUT2 = –1.0 µA
(8)
2.9
2.9
V
VOL
Output low voltage
IOL = 3.0 mA
0.4
0.4
V
Output low voltage
(open drain)
(9)
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,
VPFI2
PFI input threshold
VCC = 5 V (Y)
1.225
1.250
1.275
V
VCC = 3 V (W)
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
External switch
resistance on tamper
pin
500
500
Ω
Notes:
(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).
(2)
Measured with VOUT
and E̅CON open. Not including tamper detection current (see Table 5: "Tamper detection current
(normally closed - TCMX = '0')").



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