參數(shù)資料
型號(hào)： DM164134
廠商： Microchip Technology
文件頁(yè)數(shù)： 5/116頁(yè)
文件大?。?/td> 0K
描述： KIT DEV PIC18F4XK22
標(biāo)準(zhǔn)包裝： 1
系列： PIC® 18F
類型： MCU
適用于相關(guān)產(chǎn)品： PIC18F4XK22，PIC18F2XK22
所含物品： 板，文檔
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PIC18FXX8
DS41159E-page 100
2006 Microchip Technology Inc.
9.3
PORTC, TRISC and LATC
Registers
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,
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:
INITIALIZING PORTC
FIGURE 9-8:
PORTC BLOCK DIAGRAM (PERIPHERAL OUTPUT OVERRIDE)
CLRF
PORTC
; Initialize PORTC by
; clearing output
; data latches
CLRF
LATC
; Alternate method
; to clear output
; data latches
MOVLW
0CFh
; Value used to
; initialize data
; direction
MOVWF
TRISC
; Set RC3:RC0 as inputs
; RC5:RC4 as outputs
; RC7:RC6 as inputs
Peripheral Out Select
Data Bus
WR LATC
WR TRISC
Data Latch
TRIS Latch
RD TRISC
Q
D
Q
CK
QD
EN
Peripheral Data Out
0
1
Q
D
Q
CK
P
N
VDD
VSS
RD PORTC
Peripheral Data In
I/O pin(1)
or
WR PORTC
RD LATC
Schmitt
Trigger
Note
1: I/O pins have diode protection to VDD and VSS.
TRIS
Override
Peripheral Enable
TRIS OVERRIDE
Pin
Override
Peripheral
RC0
Yes
Timer1 Oscillator
for Timer1/Timer3
RC1
Yes
Timer1 Oscillator
for Timer1/Timer3
RC2
No
—
RC3
Yes
SPI/I2C
Master Clock
RC4
Yes
I2C Data Out
RC5
Yes
SPI Data Out
RC6
Yes
USART Async
Xmit, Sync Clock
RC7
Yes
USART Sync Data
Out
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DM164135 制造商:Microchip Technology Inc 功能描述:KIT, ONEPIC DEMO BOARD, PLUS PICKIT 3 制造商:Microchip Technology Inc 功能描述:KIT, ONEPIC DEMO BOARD, PLUS PICKIT 3; SVHC:No SVHC (19-Dec-2012) ;RoHS Compliant: Yes 制造商:Microchip Technology Inc 功能描述:One PIC MCU Platform Board with PICkit 3
DM164135 制造商:Microchip Technology Inc 功能描述:PICKIT 3 IN-CIRCUIT DEBUGGER
DM173001 功能描述:開發(fā)板和工具包 - PIC / DSPIC PICDEM 17 PIC17CXX RoHS:否 制造商:Microchip Technology 產(chǎn)品:Starter Kits 工具用于評(píng)估:chipKIT 核心:Uno32 接口類型: 工作電源電壓:
DM180021 功能描述:開發(fā)板和工具包 - PIC / DSPIC PIC18 Starter Kit RoHS:否 制造商:Microchip Technology 產(chǎn)品:Starter Kits 工具用于評(píng)估:chipKIT 核心:Uno32 接口類型: 工作電源電壓:
DM1800-434MB 功能描述:射頻模塊 DM1800 Base Station 433.92 MHz RoHS:否 制造商:Linx Technologies 產(chǎn)品:Transceiver Modules 頻帶:902 MHz to 928 MHz 輸出功率:- 15.5 dBm to + 12.5 dBm 接口類型:UART 工作電源電壓:- 0.3 VDC to + 5.5 VDC 傳輸供電電流:38.1 mA 接收供電電流:22.7 mA 天線連接器類型:U.FL 最大工作溫度:+ 85 C 尺寸:1.15 mm x 0.63 mm x 0.131 mm
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