PIC16LF1847 Datasheet, PDF (123/408 Pages) Microchip Technology – 18/20/28-Pin Flash Microcontrollers with nanoWatt XLP Technology

PIC16(L)F1847
REGISTER 12-6: WPUA: WEAK PULL-UP PORTA REGISTER
U-0
—
bit 7
U-0
R/W-1/1
U-0
U-0
U-0
—
WPUA5
—
—
—
U-0
U-0
—
—
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
Unimplemented: Read as ‘0’
WPUA5: Weak Pull-up RA5 Control bit
If MCLRE in Configuration Word 1 = 0, MCLR is disabled):
1 = Weak Pull-up enabled⁽¹⁾
0 = Weak Pull-up disabled
If MCLRE in Configuration Word 1 = 1, MCLR is enabled):
Weak Pull-up is always enabled.
Unimplemented: Read as ‘0’
Note 1: Global WPUEN bit of the OPTION_REG register must be cleared for individual pull-ups to be enabled.
2: The weak pull-up device is automatically disabled if the pin is in configured as an output.
REGISTER 12-7: ANSELA: PORTA ANALOG SELECT REGISTER
U-0
—
bit 7
U-0
U-0
R/W-1/1
R/W-1/1
R/W-1/1
—
—
ANSA4
ANSA3
ANSA2
R/W-1/1
ANSA1
R/W-1/1
ANSA0
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 7-5
bit 4-0
Unimplemented: Read as ‘0’
ANSA<4:0>: Analog Select between Analog or Digital Function on pins RA<4:0>, respectively
0 = Digital I/O. Pin is assigned to port or digital special function.
1 = Analog input. Pin is assigned as analog input⁽¹⁾. Digital input buffer disabled.
Note 1: When setting a pin to an analog input, the corresponding TRIS bit must be set to Input mode in order to
allow external control of the voltage on the pin.
 2011 Microchip Technology Inc.
Preliminary
DS41453A-page 123