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| PIC16F818_13 Datasheet, PDF (48/178 Pages) Microchip Technology – 18/20-Pin Enhanced Flash Microcontrollers with nanoWatt Technology | |||
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PIC16F818/819
FIGURE 5-11:
BLOCK DIAGRAM OF RB3 PIN
CCP
CCP1<M3:M0> = 1000, 1001, 11xx and CCPMX = 0
CCP1<M3:M0> = 0100, 0101, 0110, 0111 and CCPMX = 0
0
or LVP = 1
1
RBPU(2)
Data Bus
WR
PORTB
WR
TRISB
Data Latch
DQ
CK
TRIS Latch
DQ
CK
RD TRISB
VDD
P
Weak
Pull-up
I/O pin(1)
TTL
Input
Buffer
RD PORTB
To PGM or CCP
Q
D
EN
RD PORTB
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.
DS39598F-page 48
ï£ 2001-2013 Microchip Technology Inc.
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