PIC16F872-I/SP Microchip Technology Inc., PIC16F872-I/SP Datasheet - Page 32
PIC16F872-I/SP
Manufacturer Part Number
PIC16F872-I/SP
Description
28 PIN, 7 KB FLASH, 128 RAM, 22 I/O
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC16F872-ISP.pdf
(168 pages)
Specifications of PIC16F872-I/SP
A/d Inputs
5-Channel, 10-Bit
Cpu Speed
5 MIPS
Eeprom Memory
64 Bytes
Input Output
22
Interface
I2C/SPI
Memory Type
Flash
Number Of Bits
8
Package Type
28-pin SPDIP
Programmable Memory
3.5K Bytes
Ram Size
128 Bytes
Speed
20 MHz
Timers
2-8-bit, 1-16-bit
Voltage, Range
2-5.5 V
Lead Free Status / Rohs Status
RoHS Compliant part
Electrostatic Device
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PIC16F872
TABLE 4-1:
TABLE 4-2:
DS30221C-page 30
RA0/AN0
RA1/AN1
RA2/AN2
RA3/AN3/V
RA4/T0CKI
RA5/SS/AN4
Legend: TTL = TTL input, ST = Schmitt Trigger input
Address
05h
85h
9Fh
Legend: x = unknown, u = unchanged, - = unimplemented locations read as '0'.
Note:
Name
Shaded cells are not used by PORTA.
When using the SSP module in SPI Slave mode and SS enabled, the A/D converter must be set to one of
the following modes, where PCFG3:PCFG0 = 0100, 0101, 011x, 1101, 1110, 1111.
PORTA
TRISA
ADCON1 ADFM
REF
Name
PORTA FUNCTIONS
SUMMARY OF REGISTERS ASSOCIATED WITH PORTA
Bit#
bit3
bit4
bit5
bit0
bit1
bit2
Bit 7
—
—
Buffer
TTL
TTL
TTL
TTL
TTL
Bit 6
ST
—
—
—
PORTA Data Direction Register
Input/output or analog input or V
Input/output or external clock input for Timer0.
Output is open drain type.
Input/output or slave select input for synchronous serial port or analog input.
Input/output or analog input.
Input/output or analog input.
Input/output or analog input.
Bit 5
RA5
—
Bit 4
RA4
—
PCFG3 PCFG2 PCFG1 PCFG0
Bit 3
RA3
Bit 2
RA2
REF.
Function
Bit 1
RA1
Bit 0
RA0
© 2006 Microchip Technology Inc.
--0x 0000
--11 1111
--0- 0000
Value on:
POR,
BOR
Value on all
--0u 0000
--11 1111
--0- 0000
RESETS
other
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