M41T65 STMICROELECTRONICS [STMicroelectronics], M41T65 Datasheet - Page 9

• Manufacturer Part Number: M41T65
• Description: Serial real-time clocks with alarm
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

M41T62/63/64/65
Table 2.
Figure 9.
1. Open drain.
2. Defaults to 32 KHz on power-up.
Figure 10. M41T63 block diagram
1. Open drain.
2. Defaults to 32 KHz on power-up.
IRQ/FT/OUT
XTAL
XTAL
IRQ/OUT
SDA
SCL
SDA
SCL
SQW
WDO
SDA
F
SCL
V
V
XO
XI
32K
CC
SS
Signal names
M41T62 block diagram
Oscillator input
Oscillator output
Serial clock input
Interrupt or OUT output (open drain)
Interrupt, frequency test, or OUT output (open drain)
Serial data input/output
Programmable square wave - defaults to 32 KHz on power-up (open drain for
M41T64 only)
Dedicated 32 KHz output (M41T64 only)
Watchdog timer output (open drain)
Supply voltage
Ground
OSCILLATOR
OSCILLATOR
INTERFACE
INTERFACE
32KHz
32KHz
I 2 C
Doc ID 10397 Rev 14
I 2 C
REAL TIME CLOCK
OSCILLATOR FAIL
REAL TIME CLOCK
OSCILLATOR FAIL
SQUARE WAVE
SQUARE WAVE
RTC W/ALARM
RTC W/ALARM
WATCHDOG
WATCHDOG
CALENDAR
CALENDAR
DETECT
DETECT
OFIE
AFE
SQWE
SQWE
Description
IRQ/OUT
SQW
SQW
WDO
(2)
(2)
AI08899a
(1)
AI09191
(1)
9/41