PIC16C765 Microchip Technology Inc., PIC16C765 Datasheet - Page 37

• Manufacturer Part Number: PIC16C765
• Description: 8-bit Cmos Microcontrollers With Usb
• Manufacturer: Microchip Technology Inc.

5.4
PORTD is an 8-bit port with Schmitt Trigger input buff-
ers. Each pin is individually configured 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.
TABLE 5-7:
TABLE 5-8:
Legend:
Address
08h
88h
Legend: x = unknown, u = unchanged, - = unimplemented read as '0'. Shaded cells are not used by PORTD.
2000 Microchip Technology Inc.
Note:
Note 1:
Note 1:
PORTD and TRISD Registers
RD0/PSP0
RD1/PSP1
RD2/PSP2
RD3/PSP3
RD4/PSP4
RD5/PSP5
RD6/PSP6
RD7/PSP7
PORTD
TRISD
The PIC16C745 does not provide PORTD.
The PORTD and TRISD registers are
reserved. Always maintain these bits clear.
OD = open drain, ST = Schmitt Trigger
PIC16C765 only.
PIC16C765 only.
Name
Name
(1)
(1)
PORTD FUNCTIONS
SUMMARY OF REGISTERS ASSOCIATED WITH PORTD
PORTD Data Direction Register
Bit 7
RD7
Function
Bit 6
RD6
PSP0
PSP1
PSP2
PSP3
PSP4
PSP5
PSP6
PSP7
RD0
RD1
RD2
RD3
RD4
RD5
RD6
RD7
Bit 5
RD5
Input
Type
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
Preliminary
Bit 4
RD4
Output
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
Type
—
—
—
—
—
—
—
—
Bit 3
RD3
FIGURE 5-6:
Bi-directional I/O
Parallel Slave Port Data Input
Bi-directional I/O
Parallel Slave Port Data Input
Bi-directional I/O
Parallel Slave Port Data Input
Bi-directional I/O
Parallel Slave Port Data Input
Bi-directional I/O
Parallel Slave Port Data Input
Bi-directional I/O
Parallel Slave Port Data Input
Bi-directional I/O
Parallel Slave Port Data Input
Bi-directional I/O
Parallel Slave Port Data Input
Data
Bus
WR
Port
WR
TRIS
RD Port
Bit 2
RD2
TRIS Latch
Data Latch
Bit 1
RD1
D
D
CK
CK
PIC16C745/765
RD TRIS
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
PORTD BLOCK DIAGRAM
Q
Q
Bit 0
RD0
Description
Q
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
xxxx xxxx
1111 1111
Value on:
EN
Schmitt
Trigger
Input
Buffer
POR,
EN
BOR
D
DS41124C-page 37
other resets
Value on all
uuuu uuuu
1111 1111
V
DD
I/O pin