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PIC18F242 датащи(PDF) 93 Page - Microchip Technology

номер детали PIC18F242
подробное описание детали  High-Performance, Enhanced Flash Microcontrollers with 10-Bit A/D
PDF  332 Pages
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производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC18F242 датащи(HTML) 93 Page - Microchip Technology

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© 2006 Microchip Technology Inc.
DS39564C-page 91
PIC18FXX2
FIGURE 9-5:
BLOCK DIAGRAM OF RB2:RB0 PINS
FIGURE 9-6:
BLOCK DIAGRAM OF RB3 PIN
Data Latch
RBPU(2)
P
VDD
Q
D
CK
Q
D
CK
QD
EN
Data Bus
WR Port
WR TRIS
RD TRIS
RD Port
Weak
Pull-up
RD Port
RB0/INT
I/O pin(1)
TTL
Input
Buffer
Schmitt Trigger
Buffer
TRIS Latch
Note 1:
I/O pins have diode protection to VDD and VSS.
2:
To enable weak pull-ups, set the appropriate TRIS bit(s) and clear the RBPU bit (OPTION_REG<7>).
Data Latch
P
VDD
Q
D
CK
Q
D
EN
Data Bus
WR LATB or
WR TRISB
RD TRISB
RD PORTB
Weak
Pull-up
CCP2 Input(3)
TTL
Input
Buffer
Schmitt Trigger
Buffer
TRIS Latch
RD LATB
WR PORTB
RBPU(2)
CK
D
Enable(3)
CCP Output
RD PORTB
CCP Output(3)
1
0
P
N
VDD
VSS
I/O pin(1)
Q
CCP2MX
CCP2MX = 0
Note 1:
I/O pin has diode protection to VDD and VSS.
2:
To enable weak pull-ups, set the appropriate DDR bit(s) and clear the RBPU bit (INTCON2<7>).
3:
The CCP2 input/output is multiplexed with RB3 if the CCP2MX bit is enabled (=’0’) in the configuration register.



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