Pic16f87x vs. Pcf8583

[tony_20]

Hallo!

How do I connect the Pic16f87x with pcf8583.
I know that pin 5 & 6 (SDA & SCL) connect to RC3 and RC4 on the Pic. Where do I connect pin 3 (A0), to GND??? And should pin 7 (INT*) be connected or not???
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This message was ported from CCS's old forum
Original Post ID: 14407

[Tomi]

A0: if you don't have any other I2C devices like EEPROM then you can tie it to GND and access the chip at address 0xA0.
If you have any additional chip on the I2C (especially a 24XX memory with address 0xA0) then connect it to Vcc to make free the 0xA0 address and access the chip as 0xA2 I2C base address.

INT: Connect it to PIC only if you want to use the output for any alarm purposes.

:=Hallo!
:=
:=How do I connect the Pic16f87x with pcf8583.
:=I know that pin 5 & 6 (SDA & SCL) connect to RC3 and RC4 on the Pic. Where do I connect pin 3 (A0), to GND??? And should pin 7 (INT*) be connected or not???
___________________________
This message was ported from CCS's old forum
Original Post ID: 14409