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ManualsBrandsMICROCHIP TECHNOLOGY ManualsMicrocontrollers, Microprocessors & QuartzesEmbedded microcontroller SOIC 18 8-Bit 32 MHz I/O number 16
121122123124125126127128129130
PIC16(L)F1826/27
DS41391D-page 122 2011 Microchip Technology Inc.
REGISTER 12-3: PORTA: PORTA REGISTER
R/W-x/x R/W-x/x R-x/x R/W-x/x R/W-x/x R/W-x/x R/W-x/x R/W-x/x
RA7 RA6 RA5 RA4 RA3 RA2 RA1 RA0
bit 7 bit 0
Legend:
R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’
u = Bit is unchanged x = Bit is unknown -n/n = Value at POR and BOR/Value at all other Resets
‘1’ = Bit is set ‘0’ = Bit is cleared
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 R/W-1/1 R-1/1 R/W-1/1 R/W-1/1 R/W-1/1 R/W-1/1 R/W-1/1
TRISA7 TRISA6 TRISA5 TRISA4 TRISA3 TRISA2 TRISA1 TRISA0
bit 7 bit 0
Legend:
R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’
u = Bit is unchanged x = Bit is unknown -n/n = Value at POR and BOR/Value at all other Resets
‘1’ = Bit is set ‘0’ = Bit is cleared
bit 7-6 TRISA<7:6>: PORTA Tri-State Control bit
1 = PORTA pin configured as an input (tri-stated)
0 = PORTA pin configured as an output
bit 5 TRISA5: RA5 Port Tri-State Control bit
This bit is always ‘1’ as RA5 is an input only
bit 4-0 TRISA<4:0>: PORTA Tri-State Control bit
1 = PORTA pin configured as an input (tri-stated)
0 = PORTA pin configured as an output
REGISTER 12-5: LATA: PORTA DATA LATCH REGISTER
R/W-x/u R/W-x/u U-0 R/W-x/u R/W-x/u R/W-x/u R/W-x/u R/W-x/u
LATA7 LATA6
— LATA4 LATA3 LATA2 LATA1 LATA0
bit 7 bit 0
Legend:
R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’
u = Bit is unchanged x = Bit is unknown -n/n = Value at POR and BOR/Value at all other Resets
‘1’ = Bit is set ‘0’ = Bit is cleared
bit 7-6 LATA<7:6>: RA<7:6> Output Latch Value bits
(1)
bit 5 Unimplemented: Read as ‘0
bit 4-0 LATA<4:0>: RA<4:0> Output Latch Value bits
(1)
Note 1: Writes to PORTA are actually written to corresponding LATA register. Reads from PORTA register is return of actual I/O
pin values.