PIC18F25K22-I/SO Microchip Technology Inc., PIC18F25K22-I/SO Datasheet - Page 146
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PIC18F25K22-I/SO
Manufacturer Part Number
PIC18F25K22-I/SO
Description
32KB, Flash, 1536bytes-RAM, 8-bit Family, nanoWatt XLP, 28 SOIC .300in TUBE
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC18F45K22-IP.pdf
(496 pages)
Specifications of PIC18F25K22-I/SO
A/d Inputs
17-Channel, 10-Bit
Comparators
2
Cpu Speed
16 MIPS
Eeprom Memory
256 Bytes
Input Output
24
Interface
I2C/SPI/UART/USART
Memory Type
Flash
Number Of Bits
8
Package Type
28-pin SOIC
Programmable Memory
32K Bytes
Ram Size
1.5K Bytes
Speed
64 MHz
Temperature Range
–40 to 125 °C
Timers
3-8-bit, 4-16-bit
Voltage, Range
1.8-5.5 V
Lead Free Status / Rohs Status
RoHS Compliant part
Electrostatic Device
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PIC18(L)F2X/4XK22
10.5
PORTD is an 8-bit wide, bidirectional port. The
corresponding data direction register is TRISD. Setting
a TRISD bit (= 1) will make the corresponding PORTD
pin an input (i.e., disable the output driver). Clearing a
TRISD bit (= 0) will make the corresponding PORTD
pin an output (i.e., enable the output driver and put the
contents of the output latch on the selected pin).
The Data Latch register (LATD) is also memory
mapped. Read-modify-write operations on the LATD
register read and write the latched output value for
PORTD.
All pins on PORTD are implemented with Schmitt
Trigger input buffers. Each pin is individually
configurable as an input or output.
All of the PORTD pins are multiplexed with analog and
digital peripheral modules. See
EXAMPLE 10-4:
DS41412D-page 146
MOVLB
CLRF
CLRF
MOVLW
MOVWF
MOVLW
MOVWF
Note:
Note:
PORTD Registers
0xF
PORTD
LATD
0CFh
TRISD
30h
ANSELD ; RD<3:0> dig input enable
PORTD is only available on 40-pin and
44-pin devices.
On a Power-on Reset, these pins are
configured as analog inputs.
; Set BSR for banked SFRs
; Initialize PORTD by
; clearing output
; data latches
; Alternate method
; to clear output
; data latches
; Value used to
; initialize data
; direction
; Set RD<3:0> as inputs
; RD<5:4> as outputs
; RD<7:6> as inputs
; Value used to
; enable digital inputs
; RC<7:6> dig input enable
INITIALIZING PORTD
Table
10-11.
Preliminary
10.5.1
Each PORTD pin is multiplexed with other functions.
The pins, their combined functions and their output
priorities are briefly described here. For additional
information, refer to the appropriate section in this data
sheet.
When multiple outputs are enabled, the actual pin
control goes to the peripheral with the higher priority.
Table 10-4
highest to the lowest priority.
Analog input functions, such as ADC, comparator and
SR Latch inputs, are not shown in the priority lists.
These inputs are active when the I/O pin is set for
Analog mode using the ANSELx registers. Digital
output functions may control the pin when it is in Analog
mode with the priority shown below.
PORTD OUTPUT PRIORITY
lists the PORTD pin functions from the
2010 Microchip Technology Inc.
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