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參數(shù)資料
| 型號(hào)： | M41ST85WMH6TR |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 時(shí)鐘/數(shù)據(jù)恢復(fù)及定時(shí)提取 |
| 英文描述： | 1 TIMER(S), REAL TIME CLOCK, PDSO28 |
| 封裝： | 0.300 INCH, SNAPHAT, PLASTIC, SOH-28 |
| 文件頁數(shù)： | 25/41頁 |
| 文件大小： | 376K |
| 代理商： | M41ST85WMH6TR |
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M41ST85W
DC and AC parameters
Table 11.
DC characteristics
Sym
Parameter
Test condition(1)
1.
Valid for ambient operating temperature: TA = –40 to 85°C; VCC = 2.7 to 3.6 V (except where noted).
M41ST85W
Unit
Min
Typ
Max
IBAT
(2)
2.
Measured with VOUT and ECON open.
Battery current OSC ON
TA = 25°C, VCC = 0 V, VBAT = 3 V
400
500
nA
Battery current OSC OFF
50
nA
ICC1
Supply current
f = 400 kHz
0.75
mA
ICC2
Supply current (standby)
SCL, SDA = VCC – 0.3 V
or VSS + 0.3 V
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
A
Input leakage current (PFI)
–25
2
25
nA
ILO
(4)
4.
Outputs deselected.
Output leakage current
0V
≤ VIN ≤ VCC
±1
A
IOUT1
(5)
5.
External SRAM must match RTC supervisor chip VCC specification.
VOUT current (active)
VOUT1 > VCC – 0.3 V
100
mA
IOUT2
VOUT current (battery backup)
VOUT2 > VBAT – 0.3 V
100
A
VIH
Input high voltage
0.7VCC
VCC + 0.3
V
VIL
Input low voltage
–0.3
0.3VCC
V
VBAT
Battery voltage
2.5
3.0
3.5(6)
6.
For rechargeable backup, VBAT (max) may be considered VCC.
V
VOH
Output high voltage(7)
7.
For PFO and SQW pins (CMOS).
IOH = –1.0 mA
2.4
V
Pull-up supply voltage (open drain)
RST, IRQ/FT/OUT
3.6
V
VOHB
(8)
8.
Conditioned output (ECON) can only sustain CMOS leakage current in the battery backup mode. Higher leakage currents
will reduce battery life.
VOH (battery backup)
IOUT2 = –1.0 A
2.5
2.9
3.5
V
VOL
Output low voltage
IOL = 3.0 mA
0.4
V
Output low voltage (open drain)(9)
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
3.0 V when VCC = 0 V (during battery backup mode).
IOL = 10 mA
0.4
V
VPFD
Power fail deselect
2.55
2.60
2.70
V
VPFI
PFI input threshold
VCC = 3 V(W)
1.225
1.250
1.275
V
PFI hysteresis
PFI rising
20
70
mV
VSO
Battery backup switchover
2.5
V
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