PIC18F2331 Datasheet, PDF (123/396 Pages) Microchip Technology – 28/40/44-Pin Enhanced Flash Microcontrollers with nanoWatt Technology, High Performance PWM and A/D

PIC18F2331/2431/4331/4431
FIGURE 10-18: BLOCK DIAGRAM OF RC5
I²C™ Mode
PORT/ SSPEN & SSPMX_ Select
SCK/SCL Data Out
0
1
RD LATC
Data Bus
D
Q
WR LATC
or
PORTC
CK Q
Data Latch
D
Q
WR TRISC
CK Q
TRIS Latch
VDD
P
N
VSS
RC5 Pin
SDO Drive
RD TRISC
Q
D
Schmitt
Trigger
EN
RD PORTC
SCL or SCL input
Note 1: SCK/SCL are multiplexed on RD3 and RC5 using SSPMX bit in the configuration register.
FIGURE 10-19: BLOCK DIAGRAM OF RC6
SSPMX⁽¹⁾
USART Select
TX Data Out/CK
Data Bus
WR LATC
or
PORTC
WR TRISC
USART Select
RD LATC
D
Q
CK Q
Data Latch
D
Q
CK Q
TRIS Latch
RD TRISC
RD PORTC
CK Input
SS input
0
VDD
P
1
N
VSS
Q
D
EN
Schmitt
Trigger
RC6 Pin
TTL
 2003 Microchip Technology Inc.
Preliminary
DS39616B-page 121