PIC18F1220 MICROCHIP [Microchip Technology], PIC18F1220 Datasheet - Page 96

• Manufacturer Part Number: PIC18F1220
• Description: 18/20/28-Pin High-Performance, Enhanced Flash Microcontrollers with 10-bit A/D and nanoWatt Technology
• Manufacturer: MICROCHIP [Microchip Technology]

PIC18F1220/1320
FIGURE 10-11:
DS39605C-page 94
Note 1:
Analog Input Mode
EUSART Enabled
2:
WR LATB or
WR TRISB
I/O pins have diode protection to V
To enable weak pull-ups, set the appropriate TRIS bit(s) and clear the RBPU bit (INTCON2<7>).
Data Bus
DT TRIS
DT Data
PORTB
Set RBIF
From other
RB7:RB4 pins
To A/D Converter
BLOCK DIAGRAM OF RB4/AN6/RX/DT/KBI0 PIN
TRIS Latch
RD PORTB
D
Data Latch
D
RD LATB
RD TRISB
CK
CK
Q
Q
Q
Q
DD
RX/DT Input
and V
Q
RBPU
SS
.
EN
D
(2)
Analog Input
Mode
1
0
RD PORTB
Schmitt
Trigger
Q
EN
Q3
D
V
P Weak
DD
Pull-up
Q1
TTL
Input
Buffer
 2004 Microchip Technology Inc.
RB4 pin