PIC18F2331 Datasheet, PDF (129/396 Pages) Microchip Technology – 28/40/44-Pin Enhanced Flash Microcontrollers with nanoWatt Technology, High Performance PWM and A/D

PIC18F2331/2431/4331/4431
FIGURE 10-26: BLOCK DIAGRAM OF RD1
PORT/SPI Mode & SSPMX Select
SDO Data Out
0
1
RD LATD
Data Bus
D
Q
WR LATD
or
PORTD
CK Q
Data Latch
WR TRISD
D
Q
CK Q
TRIS Latch
VDD
P
N
VSS
RD TRISD
RD PORTD
Q
D
EN
Schmitt
Trigger
Note 1: The SDO output is multiplexed by SSPMX bit in the configuration register.
FIGURE 10-27: BLOCK DIAGRAM OF RD0
Data Bus
WR LATD
or
PORTD
WR TRISD
RD LATD
D
Q
CK Q
Data Latch
D
Q
CK Q
TRIS Latch
VDD
P
N
VSS
RD TRISD
RD PORTD
Q
D
EN
Schmitt
Trigger
T0CKI/T5CKI Input
Note 1: T0CKI/T5CKI are multiplexed by SSPMX bit in the configuration register.
RD1 Pin
RD0 Pin
SSPMX⁽¹⁾
 2003 Microchip Technology Inc.
Preliminary
DS39616B-page 127