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PIC16F946-E/MLQTP bảng dữ liệu(PDF) 86 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]
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PIC16F913/914/916/917/946
DS41250F-page 84
© 2007 Microchip Technology Inc.
3.9
PORTG and TRISG Registers
PORTG is an 8-bit port with Schmitt Trigger input
buffers. RG<5:0> 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. PORTG is available on the PIC16F946 only.
EXAMPLE 3-7:
INITIALIZING PORTG
BANKSEL PORTG
;
CLRF
PORTG
;Init PORTG
BANKSEL TRISG
;
MOVLW
3Fh
;Set RG<5:0> as inputs
MOVWF
TRISG
;
REGISTER 3-16:
PORTG: PORTG REGISTER(1)
U-0
U-0
R/W-x
R/W-x
R/W-x
R/W-x
R/W-x
R/W-x
—
—
RG5
RG4
RG3
RG2
RG1
RG0
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 7-6
Unimplemented: Read as ‘0’
bit 5-0
RG<5:0>: PORTG I/O Pin bits
1
= Port pin is >VIH min.
0
= Port pin is <VIL max.
Note 1:
PIC16F946 only.
REGISTER 3-17:
TRISG: PORTG TRI-STATE REGISTER(1)
U-0
U-0
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
—
—
TRISG5
TRISG4
TRISG3
TRISG2
TRISG1
TRISG0
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 7-6
Unimplemented: Read as ‘0’
bit 5-0
TRISF<5:0>: PORTG Tri-State Control bits
1
= PORTG pin configured as an input (tri-stated)
0
= PORTG pin configured as an output
Note 1:
PIC16F946 only.



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