m41t93 STMicroelectronics, m41t93 Datasheet - Page 9

• Manufacturer Part Number: m41t93
• Description: Serial Spi Bus Rtc With Battery Switchover
• Manufacturer: STMicroelectronics

Figure 4.
1. Open drain output
2. V
RST
CRYSTAL
= V
V CC
SDO
SCL
SDI
SO
V BAT
E
Block diagram
= 2.93V (S), 2.63V (R), and 2.32V (Z).
V RST /V SO
(2)
XI
XO
INTERFACE
OSCILLATOR
COMPARE
WRITE
PROTECT
V CC < V RST
32kHz
SPI
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
OUT
TIE
SQWE
OFIE
A1IE
FT
RST (1)
IRQ/FT/OUT
SQW
AI11821
(1)
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