參數(shù)資料
型號: 16F872
廠商: Microchip Technology Inc.
英文描述: CAT 5E CROSSOVER PATCH CORD CABLE GREEN 10 FT
中文描述: 28引腳,8位閃存微控制器的CMOS
文件頁數(shù): 24/160頁
文件大?。?/td> 2600K
代理商: 16F872
PIC16F872
DS30221A-page 24
Preliminary
1999 Microchip Technology Inc.
TABLE 3-1:
PORTA FUNCTIONS
TABLE 3-2:
SUMMARY OF REGISTERS ASSOCIATED WITH PORTA
Name
Bit#
Buffer
Function
RA0/AN0
RA1/AN1
RA2/AN2
RA3/AN3/V
REF
RA4/T0CKI
bit0
bit1
bit2
bit3
bit4
TTL
TTL
TTL
TTL
ST
Input/output or analog input
Input/output or analog input
Input/output or analog input
Input/output or analog input or V
REF
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
RA5/SS/AN4
Legend: TTL = TTL input, ST = Schmitt Trigger input.
bit5
TTL
Address
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Value on:
POR,
BOR
Value on all
other
resets
05h
85h
9Fh
Legend:
x
= unknown,
u
= unchanged,
-
= unimplemented locations read as '0'. Shaded cells are not used by PORTA.
PORTA
TRISA
ADCON1 ADFM
RA5
PORTA Data Direction Register
RA4
RA3
RA2
RA1
RA0
--0x 0000
--0u 0000
--11 1111
--11 1111
PCFG3
PCFG2
PCFG1 PCFG0
--0- 0000
--0- 0000
Note:
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 PCFG<3:0> =
0100,0101, 011x, 1101, 1110, 1111
.
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