PIC18F4321 Datasheet, PDF (11/396 Pages) Microchip Technology – 28/40/44-Pin Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology

PIC18F4321 FAMILY
TABLE 1-1: DEVICE FEATURES
Features
PIC18F2221
PIC18F2321
PIC18F4221
PIC18F4321
Operating Frequency
DC – 40 MHz
DC – 40 MHz
DC – 40 MHz
DC – 40 MHz
Program Memory (Bytes)
4096
8192
4096
8192
Program Memory (Instructions)
2048
4096
2048
4096
Data Memory (Bytes)
512
512
512
512
Data EEPROM Memory (Bytes)
256
256
256
256
Interrupt Sources
19
19
20
20
I/O Ports
Ports A, B, C, (E) Ports A, B, C, (E) Ports A, B, C, D, E Ports A, B, C, D, E
Timers
4
4
4
4
Capture/Compare/PWM Modules
2
2
1
1
Enhanced Capture/Compare/
0
0
1
1
PWM Modules
Serial Communications
MSSP,
MSSP,
MSSP,
MSSP,
Enhanced USART Enhanced USART Enhanced USART Enhanced USART
Parallel Communications (PSP)
No
No
Yes
Yes
10-bit Analog-to-Digital Module 10 Input Channels 10 Input Channels 13 Input Channels 13 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
Yes
Yes
Yes
Yes
Detect
Programmable Brown-out Reset
Yes
Yes
Yes
Yes
Instruction Set
75 Instructions;
83 with Extended
Instruction Set
enabled
75 Instructions;
83 with Extended
Instruction Set
enabled
75 Instructions;
83 with Extended
Instruction Set
enabled
75 Instructions;
83 with Extended
Instruction Set
enabled
Packages
28-pin SPDIP
28-pin SOIC
28-pin SSOP
28-pin QFN
28-pin SPDIP
28-pin SOIC
28-pin SSOP
28-pin QFN
40-pin PDIP
44-pin QFN
44-pin TQFP
40-pin PDIP
44-pin QFN
44-pin TQFP
© 2007 Microchip Technology Inc.
Preliminary
DS39689E-page 9