PIC16C745/JW Microchip Technology, PIC16C745/JW Datasheet - Page 37

• Manufacturer Part Number: PIC16C745/JW
• Description: IC MCU EPROM8KX14 USB A/D 28CDIP
• Manufacturer: Microchip Technology
• Series: PIC® 16Cr

Specifications of PIC16C745/JW

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 24MHz
• Connectivity: SCI, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 22
• Program Memory Size: 14KB (8K x 14)
• Program Memory Type: EPROM, UV
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 4.35 V ~ 5.25 V
• Data Converters: A/D 5x8b
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 28-CDIP (0.300", 7.62mm) Window
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

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