8051 internal adc

[burassu]

Hi I am using th internal adc of the 8051 mcu . I need to use all the pins of port 1 as adc. But for a specific function I need to use pin 1.1 , for another function ,pin 1.2 ......

Is there any code to initialize each pin as an internal adc ??

Tnks

 

[OLIVE2222]

Hi,

The 8051 don't have any ADC. You maybe use an improved µC based on 8051 core. Please specify the exact IC reference.

Olivier

 

[burassu]

89c51ac2

 

[OLIVE2222]

According to the uC data sheet here under (page 87) "The channel select bit in ADCF register define which ADC channel/port1 pin will be used as ADCIN. The remaining ADC channels/port1 pins can be used as general purpose I/O"

http://www.keil.com/dd/docs/datashts/atmel/t89c51ac2.pdf

You you maybe have a look on the ADCF register value generated by your code.

Olivier

 

[burassu]

ADCF

Therfore if I write ADCF = 0x01; means that I am using pin1.0?