Datasheet

 1997-2013 Microchip Technology Inc. DS30234E-page 17
PIC16C6X
PORTD can be a bi-directional I/O port or parallel slave port
for interfacing to a microprocessor bus.
RD0/PSP0 19 21 38 I/O ST/TTL
(6)
RD1/PSP1 20 22 39 I/O ST/TTL
(6)
RD2/PSP2 21 23 40 I/O ST/TTL
(6)
RD3/PSP3 22 24 41 I/O ST/TTL
(6)
RD4/PSP4 27 30 2 I/O ST/TTL
(6)
RD5/PSP5 28 31 3 I/O ST/TTL
(6)
RD6/PSP6 29 32 4 I/O ST/TTL
(6)
RD7/PSP7 30 33 5 I/O ST/TTL
(6)
PORTE is a bi-directional I/O port.
RE0/RD
8 9 25 I/O ST/TTL
(6)
RE0 can also be read control for the parallel slave port.
RE1/WR
9 10 26 I/O ST/TTL
(6)
RE1 can also be write control for the parallel slave port.
RE2/CS
10 11 27 I/O ST/TTL
(6)
RE2 can also be select control for the parallel slave port.
V
SS 12,31 13,34 6,29 P — Ground reference for logic and I/O pins.
V
DD 11,32 12,35 7,28 P — Positive supply for logic and I/O pins.
NC — 1,17,
28,40
12,13,
33,34
— — These pins are not internally connected. These pins should
be left unconnected.
TABLE 3-3: PIC16C64/64A/R64/65/65A/R65/67 PINOUT DESCRIPTION (Cont.’d)
Pin Name
DIP
Pin#
PLCC
Pin#
TQFP
MQFP
Pin#
Pin
Type
Buffer
Type
Description
Legend: I = input O = output I/O = input/output P = power
— = Not used TTL = TTL input ST = Schmitt Trigger input
Note 1: Pin functions T1OSO and T1OSI are reversed on the PIC16C64.
2: CCP2 and the USART are not available on the PIC16C64/64A/R64.
3: This buffer is a Schmitt Trigger input when configured in RC oscillator mode and a CMOS input otherwise.
4: This buffer is a Schmitt Trigger input when configured as the external interrupt.
5: This buffer is a Schmitt Trigger input when used in serial programming mode.
6: This buffer is a Schmitt Trigger input when configured as general purpose I/O and a TTL input when used in the Parallel Slave
Port mode (for interfacing to a microprocessor bus).