PIC16C63A Microchip Technology, PIC16C63A Datasheet - Page 31

• Manufacturer Part Number: PIC16C63A
• Description: 28/40-Pin 8-Bit CMOS Microcontrollers
• Manufacturer: Microchip Technology

3.4
This
PIC16C65B/PIC16C74B devices only.
PORTD is an 8-bit port with Schmitt Trigger input buff-
ers. Each pin is individually configurable as an input or
output.
PORTD can be configured as an 8-bit wide micropro-
cessor port (parallel slave port) by setting control bit
PSPMODE (TRISE<4>). In this mode, the input buffers
are TTL.
FIGURE 3-6:
1998 Microchip Technology Inc.
Note 1: I/O pins have protection diodes to V
Data
bus
WR
TRIS
WR
PORT
RD PORT
PORTD and TRISD Registers
section
TRIS Latch
Data Latch
D
D
CK
CK
RD TRIS
PORTD BLOCK DIAGRAM
(IN I/O PORT MODE)
Q
is
Q
Q
applicable
EN
Schmitt
Trigger
input
buffer
EN
D
DD
and V
to
I/O pin
SS
(1)
the
.
PIC16C63A/65B/73B/74B
DS30605A-page 31