Datasheet
2010 Microchip Technology Inc. DS39616D-page 13
PIC18F2331/2431/4331/4431
1.3 Details on Individual Family
Members
Devices in the PIC18F2331/2431/4331/4431 family are
available in 28-pin (PIC18F2331/2431) and 40/44-pin
(PIC18F4331/4431) packages. The block diagram for
the two groups is shown in Figure 1-1.
The devices are differentiated from each other in three
ways:
1. Flash program memory (8 Kbytes for
PIC18F2331/4331 devices, 16 Kbytes for
PIC18F2431/4431).
2. A/D channels (5 for PIC18F2331/2431 devices,
9 for PIC18F4331/4431 devices).
3. I/O ports (3 bidirectional ports on PIC18F2331/
2431 devices, 5 bidirectional ports on
PIC18F4331/4431 devices).
All other features for devices in this family are identical.
These are summarized in Tabl e 1 - 1 .
The pinouts for all devices are listed in Table 1-2 and
Table 1-3.
Like all Microchip PIC18 devices, members of the
PIC18F2331/2431/4331/4431 family are available as
both standard and low-voltage devices. Standard
devices with Enhanced Flash memory, designated with
an “F” in the part number (such as PIC18F2331),
accommodate an operating V
DD range of 4.2V to 5.5V.
Low-voltage parts, designated by “LF” (such as
PIC18LF2331), function over an extended VDD range
of 2.0V to 5.5V.
TABLE 1-1: DEVICE FEATURES
Features PIC18F2331 PIC18F2431 PIC18F4331 PIC18F4431
Operating Frequency DC – 40 MHz DC – 40 MHz DC – 40 MHz DC – 40 MHz
Program Memory (Bytes) 8192 16384 8192 16384
Program Memory (Instructions) 4096 8192 4096 8192
Data Memory (Bytes) 768 768 768 768
Data EEPROM Memory (Bytes) 256 256 256 256
Interrupt Sources 22 22 34 34
I/O Ports Ports A, B, C Ports A, B, C Ports A, B, C, D, E Ports A, B, C, D, E
Timers 4 4 4 4
Capture/Compare/PWM modules 2 2 2 2
14-Bit Power Control PWM (6 Channels) (6 Channels) (8 Channels) (8 Channels)
Motion Feedback Module
(Input Capture/Quadrature
Encoder Interface)
1 QEI
or
3x IC
1 QEI
or
3x IC
1 QEI
or
3x IC
1 QEI
or
3x IC
Serial Communications SSP,
Enhanced USART
SSP,
Enhanced USART
SSP,
Enhanced USART
SSP,
Enhanced USART
10-Bit High-Speed
Analog-to-Digital Converter module
5 Input Channels 5 Input Channels 9 Input Channels 9 Input Channels
Resets (and Delays) POR, BOR,
RESET Instruction,
Stack Full,
Stack Underflow
(PWRT, OST),
MCLR
(optional),
WDT
POR, BOR,
RESET Instruction,
Stack Full,
Stack Underflow
(PWRT, OST),
MCLR
(optional),
WDT
POR, BOR,
RESET Instruction,
Stack Full,
Stack Underflow
(PWRT, OST),
MCLR
(optional),
WDT
POR, BOR,
RESET Instruction,
Stack Full,
Stack Underflow
(PWRT, OST),
MCLR
(optional),
WDT
Programmable Low-Voltage Detect Yes Yes Yes Yes
Programmable Brown-out Reset Yes Yes Yes Yes
Instruction Set 75 Instructions 75 Instructions 75 Instructions 75 Instructions
Packages 28-pin SPDIP
28-pin SOIC
28-pin QFN
28-pin SPDIP
28-pin SOIC
28-pin QFN
40-pin PDIP
44-pin TQFP
44-pin QFN
40-pin PDIP
44-pin TQFP
44-pin QFN