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| PIC16F631_08 Datasheet, PDF (76/306 Pages) Microchip Technology – 20-Pin Flash-Based, 8-Bit CMOS Microcontrollers with nanoWatt Technology | |||
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PIC16F631/677/685/687/689/690
4.4.3.4 RB7/TX/CK
Figure 4-10 shows the diagram for this pin. The
RB7/TX/CK(1) pin is configurable to function as one of
the following:
⢠a general purpose I/O
⢠an asynchronous serial output
⢠a synchronous clock I/O
Note 1: TX and CK are available on
PIC16F687/PIC16F689/PIC16F690 only.
FIGURE 4-10:
BLOCK DIAGRAM OF RB7
Data Bus
DQ
WR
WPUB
CK Q
RD
WPUB
DQ
WR
PORTB
CK Q
WR
TRISB
DQ
CK Q
RD
TRISB
RD
PORTB
DQ
WR
IOCB
CK Q
RD
IOCB
Interrupt-on-
Change
RABPU
SPEN
TXEN
SYNC
EUSART
CK 01
EUSART
TX
10
01
10
â1â 01
10
VDD
Weak
VDD
I/O Pin
VSS
QD
EN
Q3
QD
EN
RD PORTB
Available on PIC16F687/PIC16F689/PIC16F690 only.
DS41262E-page 74
© 2008 Microchip Technology Inc.
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