PIC16F1847_13 Datasheet, PDF (120/440 Pages) Microchip Technology – 18/20/28-Pin Flash Microcontrollers with XLP Technology

PIC16(L)F1847
12.4 Register Definitions: PORTA
REGISTER 12-3: PORTA: PORTA REGISTER
R/W-x/x
RA7
bit 7
R/W-x/x
RA6
R-x/x
RA5
R/W-x/x
RA4
R/W-x/x
RA3
R/W-x/x
RA2
R/W-x/x
RA1
R/W-x/x
RA0
bit 0
Legend:
R = Readable bit
u = Bit is unchanged
‘1’ = Bit is set
W = Writable bit
x = Bit is unknown
‘0’ = Bit is cleared
U = Unimplemented bit, read as ‘0’
-n/n = Value at POR and BOR/Value at all other Resets
bit 7-0
RA<7:0>: PORTA I/O Value bits⁽¹⁾
1 = Port pin is > VIH
0 = Port pin is < VIL
Note 1: Writes to PORTA are actually written to corresponding LATA register. Reads from PORTA register is return
of actual I/O pin values.
REGISTER 12-4: TRISA: PORTA TRI-STATE REGISTER
R/W-1/1
TRISA7
bit 7
R/W-1/1
TRISA6
R-1/1
TRISA5
R/W-1/1
TRISA4
R/W-1/1
TRISA3
R/W-1/1
TRISA2
R/W-1/1
TRISA1
R/W-1/1
TRISA0
bit 0
Legend:
R = Readable bit
u = Bit is unchanged
‘1’ = Bit is set
W = Writable bit
x = Bit is unknown
‘0’ = Bit is cleared
U = Unimplemented bit, read as ‘0’
-n/n = Value at POR and BOR/Value at all other Resets
bit 7-6
bit 5
bit 4-0
TRISA<7:6>: PORTA Tri-State Control bit
1 = PORTA pin configured as an input (tri-stated)
0 = PORTA pin configured as an output
TRISA5: RA5 Port Tri-State Control bit
This bit is always ‘1’ as RA5 is an input only
TRISA<4:0>: PORTA Tri-State Control bit
1 = PORTA pin configured as an input (tri-stated)
0 = PORTA pin configured as an output
DS40001453D-page 120
Preliminary
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