PIC18F4580-I/P Microchip Technology Inc., PIC18F4580-I/P Datasheet - Page 104
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PIC18F4580-I/P
Manufacturer Part Number
PIC18F4580-I/P
Description
40 PIN, 32 KB FLASH, 1536 RAM, 36 I/O
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC18F4580-IP.pdf
(402 pages)
Specifications of PIC18F4580-I/P
A/d Inputs
11-Channel, 10-Bit
Comparators
2
Cpu Speed
10 MIPS
Eeprom Memory
256 Bytes
Input Output
36
Interface
CAN/I2C/SPI/USART
Memory Type
Flash
Number Of Bits
8
Package Type
40-pin PDIP
Programmable Memory
32K Bytes
Ram Size
1.5K Bytes
Speed
40 MHz
Timers
1-8 bit, 3-16 bit
Voltage, Range
2-5.5 V
Lead Free Status / Rohs Status
RoHS Compliant part
Electrostatic Device
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9.4
PORTD is an 8-bit wide, bidirectional port. The corre-
sponding Data Direction register for the port is TRISD.
Setting a TRISD bit (= 1) will make the corresponding
PORTD pin an input (i.e., put the corresponding output
driver in a high-impedance mode). Clearing a TRISD
bit (= 0) will make the corresponding PORTD pin an
output (i.e., put the contents of the output latch on the
selected pin).
Read-modify-write operations on the LATD register
read and write the latched output value for PORTD.
PORTD uses Schmitt Trigger input buffers. Each pin is
individually configurable as an input or output.
FIGURE 9-9:
DS41159D-page 102
PIC18FXX8
Note:
PORTD, TRISD and LATD
Registers
This port is only available on the
PIC18F448 and PIC18F458.
Note 1: I/O pins have diode protection to V
PORT/PSP Select
PSP Data Out
RD LATD
Data Bus
WR LATD
or
PORTD
RD TRISD
PSP Read
RD PORTD
PSP Write
C1IN+
WR TRISD
PORTD BLOCK DIAGRAM IN I/O PORT MODE
Data Latch
TRIS Latch
D
D
CK
CK
Q
Q
Q
Q
DD
and V
Q
PORTD can be configured as an 8-bit wide, micro-
processor port (Parallel Slave Port or PSP) by setting
the control bit PSPMODE (TRISE<4>). In this mode,
the input buffers are TTL. See Section 10.0 “Parallel
Slave Port” for additional information.
PORTD is also multiplexed with the analog comparator
module and the ECCP module.
EXAMPLE 9-4:
CLRF
CLRF
MOVLW
MOVWF
MOVLW
MOVWF
SS
.
EN
D
PORTD
LATD
07h
CMCON
0CFh
TRISD
Schmitt
Trigger
V
N
Vss
P
DD
INITIALIZING PORTD
; Initialize PORTD by
; clearing output
; data latches
; Alternate method
; to clear output
; data latches
; comparator off
; Value used to
; initialize data
; direction
; Set RD3:RD0 as inputs
; RD5:RD4 as outputs
; RD7:RD6 as inputs
2004 Microchip Technology Inc.
C1IN+ pin
RD0/PSP0/
(1)
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