PIC18F2331-E/SP Microchip Technology, PIC18F2331-E/SP Datasheet - Page 118

• Manufacturer Part Number: PIC18F2331-E/SP
• Description: IC MCU FLASH 4KX16 28-DIP
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F2331-E/SP

• Core Size: 8-Bit
• Program Memory Size: 8KB (4K x 16)
• Core Processor: PIC
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, Power Control PWM, QEI, POR, PWM, WDT
• Number Of I /o: 24
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 5x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 28-DIP (0.300", 7.62mm)
• Controller Family/series: PIC18
• No. Of I/o's: 24
• Eeprom Memory Size: 256Byte
• Ram Memory Size: 768Byte
• Cpu Speed: 40MHz
• No. Of Timers: 4
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: I3-DB18F4431 - BOARD DAUGHTER ICEPIC3AC164035 - MODULE SKT FOR 18F2X31 28SOICDVA18XP280 - DEVICE ADAPTER 18F2220 PDIP 28LD
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

PIC18F2331/2431/4331/4431
FIGURE 10-10:
DS39616C-page 116
Note 1: To enable weak pull-ups, set the appropriate TRIS bit(s) and clear the RBPU bit (INTCON2<7>).
RBPU
PORT/PWM Select
PWM5 Data
Data Bus
WR LATB
or PORTB
WR TRISB
RD PORTB
Set RBIF
(1)
From other
RB7:RB4 pins
BLOCK DIAGRAM OF RB4
D
TRIS Latch
Data Latch
D
RD TRISB
RD LATB
CK
CK
RD LATB
Q
Q
Q
Q
Q
Preliminary
EN
D
0
1
RD PORTB
Q
Q3
EN
D
N
V
V
P
Q1
DD
SS
TTL
Input
Buffer
V
P
DD
Weak
Pull-up
© 2007 Microchip Technology Inc.
RB4 Pin