PIC16C774 Microchip Technology Inc., PIC16C774 Datasheet - Page 31

• Manufacturer Part Number: PIC16C774
• Description: 28/40-pin, 8-bit Cmos Microcontrollers W/ 12-bit A/d
• Manufacturer: Microchip Technology Inc.

TABLE 3-3
TABLE 3-4
Name
RB0/INT
RB1/SS
RB2/AN8
RB3/AN9/LVDIN
RB4
RB5
RB6
RB7
Legend: TTL = TTL input, ST = Schmitt Trigger input
Note 1: This buffer is a Schmitt Trigger input when configured as the external interrupt.
Address
06h, 106h PORTB
86h, 186h TRISB
81h, 181h OPTION_REG RBPU INTEDG
9Fh
Legend: x = unknown, u = unchanged. Shaded cells are not used by PORTB.
1999 Microchip Technology Inc.
2: This buffer is a Schmitt Trigger input when used in serial programming mode.
3: This buffer is a Schmitt Trigger input when used as the SSP slave select.
Name
ADCON1
PORTB FUNCTIONS
SUMMARY OF REGISTERS ASSOCIATED WITH PORTB
Bit#
bit0
bit1
bit2
bit3
bit4
bit5
bit6
bit7
PORTB Data Direction Register
ADFM
Bit 7
RB7
TTL/ST
TTL/ST
TTL/ST
TTL/ST
Buffer
TTL
TTL
TTL
TTL
VCFG2
Bit 6
RB6
(1)
(3)
(2)
(2)
VCFG1 VCFG0 PCFG3 PCFG2 PCFG1 PCFG0 0000 0000
Function
Input/output pin or external interrupt input. Internal software
programmable weak pull-up.
Input/output pin or SSP slave select. Internal software programmable
weak pull-up.
Input/output pin or analog input8. Internal software programmable
weak pull-up.
Input/output pin or analog input9 or Low-voltage detect input. Internal
software programmable weak pull-up.
Input/output pin (with interrupt on change). Internal software
programmable weak pull-up.
Input/output pin (with interrupt on change). Internal software
programmable weak pull-up.
Input/output pin (with interrupt on change). Internal software
programmable weak pull-up. Serial programming clock.
Input/output pin (with interrupt on change). Internal software
programmable weak pull-up. Serial programming data.
T0CS
Bit 5
Advance Information
RB5
T0SE
Bit 4
RB4
Bit 3
RB3
PSA
Bit 2
RB2
PS2
Bit 1
RB1
PS1
Bit 0
RB0
PS0
PIC16C77X
xxxx 11xx
1111 1111
1111 1111
Value on:
POR,
BOR
DS30275A-page 31
other resets
Value on all
uuuu 11uu
1111 1111
1111 1111
0000 0000