PIC18F458-I/PTG Microchip Technology, PIC18F458-I/PTG Datasheet - Page 102
PIC18F458-I/PTG
Manufacturer Part Number
PIC18F458-I/PTG
Description
IC MCU FLASH 16KX16 44TQFP
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC18LF242-ISO.pdf
(36 pages)
3.PIC18F248-ISO.pdf
(402 pages)
4.PIC18F248-ISO.pdf
(8 pages)
Specifications of PIC18F458-I/PTG
Core Processor
PIC
Core Size
8-Bit
Speed
40MHz
Connectivity
CAN, I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LVD, POR, PWM, WDT
Number Of I /o
33
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
1.5K x 8
Voltage - Supply (vcc/vdd)
4.2 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
44-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
- PIC16F616T-ISL PDF datasheet
- PIC18LF242-ISO PDF datasheet #2
- PIC18F248-ISO PDF datasheet #3
- PIC18F248-ISO PDF datasheet #4
- Current page: 102 of 402
- Download datasheet (7Mb)
9.3
PORTC is an 8-bit wide, bidirectional port. The corre-
sponding Data Direction register is TRISC. Setting a
TRISC bit (= 1) will make the corresponding PORTC
pin an input (i.e., put the corresponding output driver in
a high-impedance mode). Clearing a TRISC bit (= 0)
will make the corresponding PORTC pin an output (i.e.,
put the contents of the output latch on the selected pin).
Read-modify-write operations on the LATC register,
read and write the latched output value for PORTC.
PORTC is multiplexed with several peripheral functions
(Table 9-5). PORTC pins have Schmitt Trigger input
buffers.
When enabling peripheral functions, care should be
taken in defining TRIS bits for each PORTC pin. Some
peripherals override the TRIS bit to make a pin an output,
FIGURE 9-8:
DS41159E-page 100
PIC18FXX8
RD LATC
Data Bus
WR TRISC
RD TRISC
Peripheral Enable
Note 1: I/O pins have diode protection to V
Peripheral Out Select
Peripheral Data Out
WR LATC
or
WR PORTC
RD PORTC
Peripheral Data In
PORTC, TRISC and LATC
Registers
PORTC BLOCK DIAGRAM (PERIPHERAL OUTPUT OVERRIDE)
TRIS Latch
Data Latch
D
D
CK
CK
Q
Q
Q
Q
DD
Override
TRIS
0
1
and V
Q
SS
.
EN
D
while other peripherals override the TRIS bit to make a
pin an input. The user should refer to the corresponding
peripheral section for the correct TRIS bit settings.
The pin override value is not loaded into the TRIS
register. This allows read-modify-write of the TRIS
register, without concern due to peripheral overrides.
EXAMPLE 9-3:
CLRF
CLRF
MOVLW
MOVWF
Schmitt
Trigger
V
V
N
P
SS
DD
PORTC
LATC
0CFh
TRISC
I/O pin
RC0
RC1
RC2
RC3
RC4
RC5
RC6
RC7
Pin
INITIALIZING PORTC
(1)
; Initialize PORTC by
; clearing output
; data latches
; Alternate method
; to clear output
; data latches
; Value used to
; initialize data
; direction
; Set RC3:RC0 as inputs
; RC5:RC4 as outputs
; RC7:RC6 as inputs
© 2006 Microchip Technology Inc.
Override
TRIS OVERRIDE
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Timer1 Oscillator
for Timer1/Timer3
Timer1 Oscillator
for Timer1/Timer3
—
SPI™/I
Master Clock
I
SPI Data Out
USART Async
Xmit, Sync Clock
USART Sync Data
Out
2
C Data Out
Peripheral
2
C™
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