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PIC16F87 데이터시트(PDF) 52 Page - Microchip Technology

부품명 PIC16F87
상세설명  18/20/28-Pin Enhanced Flash MCUs with nanoWatt Technology
PDF  230 Pages
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제조업체  MICROCHIP [Microchip Technology]
홈페이지  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC16F87 데이터시트(HTML) 52 Page - Microchip Technology

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PIC16F87/88
DS30487D-page 52
 2002-2013 Microchip Technology Inc.
TABLE 5-2:
SUMMARY OF REGISTERS ASSOCIATED WITH PORTA
FIGURE 5-1:
BLOCK DIAGRAM OF RA0/AN0:RA1/AN1 PINS
Address
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Value on
POR, BOR
Value on
all other
Resets
05h
PORTA
RA7
RA6
RA5
RA4
RA3
RA2
RA1
RA0
xxxx 0000
(1)
xxx0 0000(2)
uuuu 0000
(1)
uuu0 0000(2)
85h
TRISA
TRISA7 TRISA6 TRISA5(3) PORTA Data Direction Register
1111 1111
1111 1111
9Fh
ADCON1
ADFM
ADCS2
VCFG1
VCFG0
—
—
—
—
0000 ----
0000 ----
9Bh
ANSEL(4)
—
ANS6
ANS5
ANS4
ANS3
ANS2
ANS1
ANS0
-111 1111
-111 1111
Legend:
x
= unknown, u = unchanged, - = unimplemented locations read as ‘0’. Shaded cells are not used by PORTA.
Note
1:
This value applies only to the PIC16F87.
2:
This value applies only to the PIC16F88.
3:
Pin 5 is an input only; the state of the TRISA5 bit has no effect and will always read ‘1’.
4:
PIC16F88 device only.
Data
Bus
Q
D
Q
CK
P
N
WR
PORTA
WR
TRISA
Data Latch
TRIS Latch
RD TRISA
RD PORTA
Analog
VSS
VDD
I/O pin
Q
D
Q
CK
Input Mode
D
Q
EN
To Comparator
TTL
Input Buffer
VDD
To A/D Module Channel Input (PIC16F88 only)



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