PIC16C73A-04/SP Microchip Technology Inc., PIC16C73A-04/SP Datasheet - Page 50

• Manufacturer Part Number: PIC16C73A-04/SP
• Description: 28 PIN, 7 KB OTP, 192 RAM, 22 I/O
• Manufacturer: Microchip Technology Inc.

Specifications of PIC16C73A-04/SP

• A/d Inputs: 5-Channel, 8-Bit
• Cpu Speed: 5 MIPS
• Eeprom Memory: 0 Bytes
• Input Output: 22
• Interface: I2C/SPI/USART
• Memory Type: OTP
• Number Of Bits: 8
• Package Type: 28-pin SPDIP
• Programmable Memory: 7K Bytes
• Ram Size: 192 Bytes
• Speed: 4 MHz
• Timers: 2-8-bit, 1-16-bit
• Voltage, Range: 2.5-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

PIC16C7X
5.4
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.
TABLE 5-7:
TABLE 5-8:
DS30390E-page 50
Name
RD0/PSP0
RD1/PSP1
RD2/PSP2
RD3/PSP3
RD4/PSP4
RD5/PSP5
RD6/PSP6
RD7/PSP7
Legend: ST = Schmitt Trigger input TTL = TTL input
Note 1: Input buffers are Schmitt Triggers when in I/O mode and TTL buffer when in Parallel Slave Port Mode.
Address Name
08h
88h
89h
Legend: x = unknown, u = unchanged, - = unimplemented read as '0'. Shaded cells are not used by PORTD.
PORTD and TRISD Registers
Applicable Devices
72 73 73A 74 74A 76 77
PORTD
TRISD
TRISE
Bit#
PORTD FUNCTIONS
bit0
bit1
bit2
bit3
bit4
bit5
bit6
bit7
SUMMARY OF REGISTERS ASSOCIATED WITH PORTD
PORTD Data Direction Register
Bit 7 Bit 6 Bit 5
RD7
IBF
OBF IBOV PSPMODE
RD6
Buffer Type
ST/TTL
ST/TTL
ST/TTL
ST/TTL
ST/TTL
ST/TTL
ST/TTL
ST/TTL
RD5
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
Bit 4
RD4
Input/output port pin or parallel slave port bit0
Input/output port pin or parallel slave port bit1
Input/output port pin or parallel slave port bit2
Input/output port pin or parallel slave port bit3
Input/output port pin or parallel slave port bit4
Input/output port pin or parallel slave port bit5
Input/output port pin or parallel slave port bit6
Input/output port pin or parallel slave port bit7
Bit 3
RD3
—
PORTE Data Direction Bits
Bit 2
RD2
FIGURE 5-7:
Note 1: I/O pins have protection diodes to V
Data
bus
WR
TRIS
WR
PORT
RD PORT
Bit 1
RD1
TRIS Latch
Function
Data Latch
D
D
CK
CK
RD TRIS
PORTD BLOCK DIAGRAM (IN
I/O PORT MODE)
Bit 0
RD0
Q
Q
1997 Microchip Technology Inc.
xxxx xxxx
1111 1111
0000 -111
Q
Value on:
POR,
BOR
EN
Schmitt
Trigger
input
buffer
EN
D
DD
other resets
Value on all
uuuu uuuu
1111 1111
0000 -111
and V
I/O pin
SS
(1)
.