PIC16F616 Microchip Technology Inc., PIC16F616 Datasheet - Page 35

• Manufacturer Part Number: PIC16F616
• Description: 14-pin Flash-based, 8-bit Cmos Microcontrollers
• Manufacturer: Microchip Technology Inc.

REGISTER 4-4:
REGISTER 4-5:
© 2007 Microchip Technology Inc.
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7-6
bit 5-4
bit 3
bit 2-0
Note 1:
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7-6
bit 5-0
Note 1:
U-0
U-0
—
—
2:
3:
4:
2:
Global RAPU must be enabled for individual pull-ups to be enabled.
The weak pull-up device is automatically disabled if the pin is in Output mode (TRISA = 0).
The RA3 pull-up is enabled when configured as MCLR and disabled as an input in the Configuration
Word.
WPUA<5:4> always reads ‘1’ in XT, HS and LP Oscillator modes.
Global Interrupt Enable (GIE) must be enabled for individual interrupts to be recognized.
IOCA<5:4> always reads ‘1’ in XT, HS and LP Oscillator modes.
Unimplemented: Read as ‘0’
WPUA<5:4>: Weak Pull-up Control bits
1 = Pull-up enabled
0 = Pull-up disabled
Unimplemented: Read as ‘0’
WPUA<2:0>: Weak Pull-up Control bits
1 = Pull-up enabled
0 = Pull-up disabled
Unimplemented: Read as ‘0’
IOCA<5:0>: Interrupt-on-change PORTA Control bit
1 = Interrupt-on-change enabled
0 = Interrupt-on-change disabled
U-0
U-0
—
—
WPUA: WEAK PULL-UP PORTA REGISTER
IOCA: INTERRUPT-ON-CHANGE PORTA REGISTER
W = Writable bit
‘1’ = Bit is set
W = Writable bit
‘1’ = Bit is set
WPUA5
IOCA5
R/W-1
R/W-0
PIC16F610/616/16HV610/616
WPUA4
IOCA4
R/W-1
R/W-0
Preliminary
U = Unimplemented bit, read as ‘0’
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
‘0’ = Bit is cleared
IOCA3
R/W-0
U-0
—
WPUA2
IOCA2
R/W-1
R/W-0
x = Bit is unknown
x = Bit is unknown
WPUA1
IOCA1
R/W-1
R/W-0
DS41288C-page 33
WPUA0
IOCA0
R/W-1
R/W-0
bit 0
bit 0