topic Re: PCF8563 in Other NXP Products

PCF8563

1193046597 — Mon, 25 Feb 2019 04:10:30 GMT

Hi!

When using the PCF8563 for the second time, there will be a time-jumping situation. Why? (Set 1 second, after 1 second delay, read out is 3 seconds)

Best regards!

Re: PCF8563

guoweisun — Tue, 26 Feb 2019 02:37:57 GMT

Please show the schematic and complete operation step about your issue.

Re: PCF8563

1193046597 — Tue, 26 Feb 2019 07:11:51 GMT

schematic is

My operation steps: I write 10 seconds to the 02H register through I2C, read the value of the 02H register after 1 second through I2C. The read value is 12 seconds, and the actual value should be 11 seconds.

Re: PCF8563

1193046597 — Mon, 04 Mar 2019 01:13:28 GMT

good morniing!

I have sent the schematic and the step to you. Is there an answer now?

Re: PCF8563

guoweisun — Mon, 04 Mar 2019 04:11:43 GMT

You can write then read 10s to 02H register to make sure the actual data again!

Re: PCF8563

guoweisun — Tue, 05 Mar 2019 02:46:26 GMT

Can you give the detail parameters of components in you schematic?

Re: PCF8563

1193046597 — Tue, 05 Mar 2019 07:29:01 GMT

According to your suggestion, I have operated. Write 10s to the 02H register, then read the value of the 02H register, and read 11s.

10s is just an example. The wrong ones may be other seconds.