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PIC16F946-E/MLQTP bảng dữ liệu(PDF) 83 Page - Microchip Technology

tên linh kiện PIC16F946-E/MLQTP
Giải thích chi tiết về linh kiện  28/40/44/64-Pin Flash-Based, 8-Bit CMOS Microcontrollers with LCD Driver and nanoWatt Technology
PDF  330 Pages
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nhà sản xuất  MICROCHIP [Microchip Technology]
Trang chủ  http://www.microchip.com
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© 2007 Microchip Technology Inc.
DS41250F-page 81
PIC16F913/914/916/917/946
3.8
PORTF and TRISF Registers
PORTF is an 8-bit port with Schmitt Trigger input buff-
ers. RF<7:0> are individually configured as inputs or
outputs, depending on the state of the port direction.
The port bits are also multiplexed with LCD segment
functions. PORTF is available on the PIC16F946 only.
EXAMPLE 3-6:
INITIALIZING PORTF
BANKSEL PORTF
;
CLRF
PORTF
;Init PORTF
BANKSEL TRISF
;
MOVLW
0FFh
;Set RF<7:0> as inputs
MOVWF
TRISF
;
REGISTER 3-14:
PORTF: PORTF REGISTER(1)
R/W-x
R/W-x
R/W-x
R/W-x
R/W-x
R/W-x
R/W-x
R/W-x
RF7
RF6
RF5
RF4
RF3
RF2
RF1
RF0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 7-0
RF<7:0>: PORTF I/O Pin bits
1
= Port pin is >VIH min.
0
= Port pin is <VIL max.
Note 1:
PIC16F946 only.
REGISTER 3-15:
TRISF: PORTF TRI-STATE REGISTER(1)
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
TRISF7
TRISF6
TRISF5
TRISF4
TRISF3
TRISF2
TRISF1
TRISF0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 7-0
TRISF<7:0>: PORTF Tri-State Control bits
1
= PORTF pin configured as an input (tri-stated)
0
= PORTF pin configured as an output
Note 1:
PIC16F946 only.



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