m41t83 STMicroelectronics, m41t83 Datasheet - Page 12

• Manufacturer Part Number: m41t83
• Description: Serial I 2c Bus Rtc With Battery Switchover
• Manufacturer: STMicroelectronics

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Figure 8.
1. Open drain output
2. V
V CC
CRYSTAL
SDA
SCL
RST
V BAT
= V
V RST /V SO (2)
SO
M41T83 block diagram
= 2.93V (S), 2.63V (R), and 2.32V (Z).
XI
XO
INTERFACE
OSCILLATOR
COMPARE
WRITE
PROTECT
V CC < V RST
32KHz
I
2
C
USER SRAM (7 Bytes)
FREQUENCY TEST
REAL TIME CLOCK
OSCILLATOR FAIL
OUTPUT DRIVER
8-BIT COUNTER
SQUARE WAVE
8 BITS OF OTP
WATCHDOG
CALENDAR
ALARM1
ALARM2
CIRCUIT
INTERNAL
POWER
TIMER
t rec
A1IE
A2IE
FT
OUT
TIE
SQWE
OFIE
IRQ2
RST (1)
IRQ1/FT/OUT
SQW
(1)
AI11800
(1)