I want to use a PCF8583 only as pulse-counter. That works...
For each pulse the countervalue (01h-03h) increase as expected. It works to set a alarmvalue (09h-0Bh) and get a Interrupt on Pin 7 when the countervalue is the same as the alarmvalue.
But what I don't get working ist to use the timeralarm.
I understand that I must
- set bit 0-2 in 08h > 0
- set bit 3 and bit 6 in 08h to 1
But I don't get an Interrupt in this configuration...
Is it possible at all to get an interrupt each 1, 100, 10.000 or 1.000.000 pulses in the counter-mode?
Must something set in 07h (timer)?