Serial real-time clocks (RTCs) with alarm
Serial real-time clocks (RTCs) with alarm
Serial real-time clocks (RTCs) with alarm
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Description<br />
M41T62/63/64/65<br />
Figure 10.<br />
M41T63 block diagram<br />
REAL TIME CLOCK<br />
CALENDAR<br />
XTAL<br />
32KHz<br />
OSCILLATOR<br />
OSCILLATOR FAIL<br />
DETECT<br />
RTC W/ALARM<br />
SDA<br />
SCL<br />
I 2 C<br />
INTERFACE<br />
WATCHDOG<br />
SQUARE WAVE<br />
SQWE<br />
WDO (1)<br />
SQW (2)<br />
AI09191<br />
1. Open drain.<br />
2. Defaults to 32 KHz on power-up.<br />
Figure 11.<br />
M41T64 block diagram<br />
REAL TIME CLOCK<br />
CALENDAR<br />
32KE<br />
F 32K<br />
(1)<br />
XTAL<br />
32KHz<br />
OSCILLATOR<br />
OSCILLATOR FAIL<br />
DETECT<br />
RTC W/ALARM<br />
SDA<br />
SCL<br />
I 2 C<br />
INTERFACE<br />
WATCHDOG<br />
SQUARE WAVE<br />
SQWE<br />
SQW (2)<br />
AI09192<br />
1. Defaults enabled on power-up.<br />
2. Open drain.<br />
Figure 12.<br />
M41T65 block diagram<br />
REAL TIME CLOCK<br />
CALENDAR<br />
XTAL<br />
32KHz<br />
OSCILLATOR<br />
OSCILLATOR FAIL<br />
DETECT<br />
RTC W/ALARM<br />
OFIE<br />
FT<br />
AFE<br />
IRQ/FT/OUT (1)<br />
SDA<br />
SCL<br />
I 2 C<br />
INTERFACE<br />
WATCHDOG<br />
WDO (1)<br />
AI09193<br />
1. Open drain.<br />
10/44 Doc ID 10397 Rev 19
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