PIC16F631_08 Datasheet, PDF (75/306 Pages) Microchip Technology – 20-Pin Flash-Based, 8-Bit CMOS Microcontrollers with nanoWatt Technology

PIC16F631/677/685/687/689/690
4.4.3.3 RB6/SCK/SCL
Figure 4-9 shows the diagram for this pin. The
RB6/SCK/SCL⁽¹⁾ pin is configurable to function as one
of the following:
• a general purpose I/O
• a SPI clock
• an I²C™ clock
Note 1: SCK and SCL are available on
PIC16F677/PIC16F687/PIC16F689/
PIC16F690 only.
FIGURE 4-9:
Data Bus
DQ
WR
WPUB
CK _Q
RD
WPUB
BLOCK DIAGRAM OF RB6
RABPU
VDD
Weak
DQ
WR
PORTB
CK _Q
WR
TRISB
DQ
CK
Q
RD
TRISB
SSPEN
SSP
Clock ₀₁
10
From
SSP ₀₁
10
VDD
I/O Pin
VSS
RD
PORTB
DQ
WR
IOCB
CK _Q
RD
IOCB
Interrupt-on-
Change
To SSP
QD
EN
QD
EN
RD PORTB
Q3
ST
Available on PIC16F677/PIC16F687/PIC16F689/PIC16F690
only.
© 2008 Microchip Technology Inc.
DS41262E-page 73