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M41T62 Datasheet(PDF) 32 Page - STMicroelectronics

Part # M41T62
Description  Serial Access Real-Time Clock with Alarms
Download  40 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M41T62 Datasheet(HTML) 32 Page - STMicroelectronics

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DC and AC parameters
M41T62/63/64/65
32/40
Table 13.
Capacitance
Symbol
Parameter(1)(2)
1.
Effective capacitance measured with power supply at 3.6V; sampled only, not 100% tested.
2.
At 25°C, f = 1MHz.
Min
Max
Unit
CIN
Input capacitance
7
pF
COUT
(3)
3.
Outputs deselected.
Output capacitance
10
pF
tLP
Low-pass filter input time constant (SDA and SCL)
50
ns
Table 14.
DC characteristics
Sym
Parameter
Test condition(1)
1.
Valid for Ambient Operating Temperature: TA = –40 to 85°C; VCC = 1.3V to 4.4V (except where noted).
Min
Typ
Max
Unit
VCC
(2)
2.
Oscillator start-up guaranteed at 1.5V only.
Operating voltage
Clock(3)
3.
When using battery back-up, VCC fall time should not exceed 10mV/µs.
1.0
4.4
V
I2C bus (400kHz)
1.3
4.4
V
ICC1 Supply current
SCL = 400kHz
(no load)
4.4V
100
µA
3.6V
50
70
µA
3.0V
35
µA
2.5V
30
µA
2.0V
20
µA
ICC2
Supply current
(standby)
SCL = 0Hz
all inputs
≥ V
CC – 0.2V
≤V
SS + 0.2V
SQW off
4.4V
950
nA
3.6V
375
700
nA
3.0V @ 25°C
350
nA
2.0V @ 25°C
310
nA
VIL Input low voltage
–0.2
0.3VCC
V
VIH Input high voltage
0.7VCC
VCC+0.3
V
VOL
Output low voltage
VCC = 4.4V, IOL = 3.0mA
(CMOS or open drain)
0.4
V
VCC = 4.4V, IOL = 1.0mA
(SQW, WDO, IRQ)
0.4
V
VOH Output high voltage
VCC = 4.4V, IOH = –1.0mA (push-pull)
2.4
V
Pull-up supply voltage
(open drain)
IRQ/OUT, IRQ/FT/OUT, WDO, SQW
(M41T64 only)
4.4
V
ILI
Input leakage current
0V
≤V
IN ≤VCC
±1
µA
ILO
Output leakage
current
0V
≤V
OUT ≤VCC
±1
µA


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