PIC16F877-04I/PT Microchip Technology, PIC16F877-04I/PT Datasheet - Page 115

• Manufacturer Part Number: PIC16F877-04I/PT
• Description: IC MCU FLASH 8KX14 EE 44TQFP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F877-04I/PT

• Core Size: 8-Bit
• Program Memory Size: 14KB (8K x 14)
• Core Processor: PIC
• Speed: 4MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 33
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 368 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-TQFP, 44-VQFP
• Controller Family/series: PIC16F
• No. Of I/o's: 33
• Eeprom Memory Size: 256Byte
• Ram Memory Size: 368Byte
• Cpu Speed: 20MHz
• No. Of Timers: 3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XLT44PT3 - SOCKET TRAN ICE 44MQFP/TQFPAC164305 - MODULE SKT FOR PM3 44TQFP444-1001 - DEMO BOARD FOR PICMICRO MCUAC164020 - MODULE SKT PROMATEII 44TQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

These steps should be followed for doing an A/D
Conversion:
1.
2.
FIGURE 11-1:
2001 Microchip Technology Inc.
Configure the A/D module:
Configure A/D interrupt (if desired):
• Set PEIE bit
• Set GIE bit
• Configure analog pins/voltage reference and
• Select A/D input channel (ADCON0)
• Select A/D conversion clock (ADCON0)
• Turn on A/D module (ADCON0)
• Clear ADIF bit
• Set ADIE bit
Note 1: Not available on PIC16F873/876 devices.
digital I/O (ADCON1)
Converter
A/D
A/D BLOCK DIAGRAM
(Reference
(Reference
Voltage)
Voltage)
V
V
REF
REF
-
+
(Input Voltage)
PCFG3:PCFG0
PCFG3:PCFG0
V
AIN
V
V
DD
SS
3.
4.
5.
6.
7.
Wait the required acquisition time.
Start conversion:
• Set GO/DONE bit (ADCON0)
Wait for A/D conversion to complete, by either:
• Polling for the GO/DONE bit to be cleared
• Waiting for the A/D interrupt
Read
(ADRESH:ADRESL), clear bit ADIF if required.
For the next conversion, go to step 1 or step 2,
as required. The A/D conversion time per bit is
defined as T
required before the next acquisition starts.
(with interrupts enabled); OR
CHS2:CHS0
A/D
111
110
101
100
011
010
001
000
AD
. A minimum wait of 2T
result
PIC16F87X
register
DS30292C-page 113
RA1/AN1
RE2/AN7
RA2/AN2/V
RA0/AN0
RE1/AN6
RE0/AN5
RA5/AN4
RA3/AN3/V
(1)
(1)
(1)
AD
REF
REF
pair
-
+
is