PCF85063A RTC - Minute ISR Sticks Low

nxf48158 — Mon, 10 Jul 2023 03:32:23 GMT

I have a PCF85063A in a design, it's the only thing on the I2C bus.

I set the "minute interrupt" by setting bit 5 in control register 0x01.

When this interrupt fires, the INT pin goes low as expected, but it never recovers HIGH unless I send a RESET command (or cycle power).

The pullup resistor is 4.75k, 5V supply.

If I do NOT enable the minute interrupt, the pin never pulls low, as expected.

I am looking for a solution for the INT pin latching LOW when it fires the first time.

Thanks in advance.

Re: PCF85063A RTC - Minute ISR Sticks Low

guoweisun — Mon, 10 Jul 2023 03:42:46 GMT

I will connect with you in teams later.