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M41T82 Datasheet(PDF) 11 Page - STMicroelectronics

Part # M41T82
Description  Serial I2C bus real-time clock (RTC) with battery switchover
PDF  64 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M41T82 Datasheet(HTML) 11 Page - STMicroelectronics

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DocID012578 Rev 19
11/64
M41T82, M41T83
Description
Figure 8. M41T83 block diagram
1. Open drain output.
2. VRST = VSO = 2.93 V (S), 2.63 V (R), and 2.32 V (Z).
Figure 9. M41T83 hardware hookup
1. Open drain output.
REAL TIME CLOCK
CALENDAR
ALARM1
ALARM2
WATCHDOG
OSCILLATOR FAIL
CIRCUIT
SQUARE WAVE
OUTPUT DRIVER
8 BITS OF OTP
8-BIT COUNTER
FREQUENCY TEST
USER SRAM (7 Bytes)
IRQ1/FT/OUT
(1)
SQW
IRQ2
(1)
RST
(1)
INTERNAL
POWER
SQWE
A1IE
SDA
SCL
VCC
OFIE
COMPARE
trec
TIMER
I
2
C
INTERFACE
32KHz
OSCILLATOR
VBAT
CRYSTAL
XI
XO
VRST/VSO
(2)
AI11800
WRITE
PROTECT
VCC < VRST
A2IE
FT
OUT
TIE
AI11801
VCC
Reset Input
Port
Serial Clock Line
Serial Data Line
32KHz CLKIN
XO
XI
M41T83
MCU
VSS
VBAT
IRQ1/FT/OUT
(1)
RST
(1)
IRQ2
(1)
SQW
SDA
SCL
VCC
INT
VCC



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