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  Topic: I need help on pic18f2550
cnshs

Replies: 5
Views: 6559

PostForum: General CCS C Discussion   Posted: Thu Jul 19, 2007 7:13 am   Subject: i hnow part of the reason
i have know some of the reason:the vref+ is high the vdd,and there is a diode in the pin that pass the current from vref+ to vdd.
thank you for you read my question.
  Topic: I need help on pic18f2550
cnshs

Replies: 5
Views: 6559

PostForum: General CCS C Discussion   Posted: Wed Jul 18, 2007 9:31 pm   Subject: part of source code
SETUP_ADC_PORTS(AN0_TO_AN3 | VSS_VREF);
SETUP_ADC(ADC_CLOCK_DIV_64);
SETUP_TIMER_0(RTCC_INTERNAL|RTCC_DIV_1);
SETUP_TIMER_1(T1_DISABLED);
SETUP_TIMER_2(T2_DISABLED, 127, 1);
SETUP_TIMER_3(T3_INT ...
  Topic: I need help on pic18f2550
cnshs

Replies: 5
Views: 6559

PostForum: General CCS C Discussion   Posted: Wed Jul 18, 2007 9:21 pm   Subject: I need help on pic18f2550
i use the circuit below:except connect a 5v to an3
http://www.semifluid.com/PIC18F2550_usb_hid_oscilloscope/Full-Circuit.gif
 
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