Datasheet

© 2007 Microchip Technology Inc. DS39629C-page 9
PIC18F6390/6490/8390/8490
TABLE 1-1: DEVICE FEATURES
Features PIC18F6390 PIC18F6490 PIC18F8390 PIC18F8490
Operating Frequency DC – 40 MHz DC – 40 MHz DC – 40 MHz DC – 40 MHz
Program Memory (Bytes) 8K 16K 8K 16K
Program Memory (Instructions) 4096 8192 4096 8192
Data Memory (Bytes) 768 768 768 768
Interrupt Sources 22 22 22 22
I/O Ports Ports A, B, C, D, E,
F, G
Ports A, B, C, D, E,
F, G
Ports A, B, C, D, E,
F, G, H, J
Ports A, B, C, D, E,
F, G, H, J
Number of Pixels the LCD Driver
can Drive
128 (32 SEGs x
4 COMs)
128 (32 SEGs x
4 COMs)
192 (48 SEGs x
4 COMs)
192 (48 SEGs x
4 COMs)
Timers 4444
Capture/Compare/PWM Modules 2 2 2 2
Serial Communications MSSP, AUSART
Enhanced USART
MSSP, AUSART
Enhanced USART
MSSP, AUSART
Enhanced USART
MSSP, AUSART
Enhanced USART
10-Bit Analog-to-Digital Module 12 Input Channels 12 Input Channels 12 Input Channels 12 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;
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 64-Pin TQFP 64-Pin TQFP 80-Pin TQFP 80-Pin TQFP