
2008 Microchip Technology Inc.
DS39626E-page 9
PIC18F2525/2620/4525/4620
TABLE 1-1:
DEVICE FEATURES
Features
PIC18F2525
PIC18F2620
PIC18F4525
PIC18F4620
Operating Frequency
DC – 40 MHz
Program Memory (Bytes)
49152
65536
49152
65536
Program Memory (Instructions)
24576
32768
24576
32768
Data Memory (Bytes)
3968
Data EEPROM Memory (Bytes)
1024
Interrupt Sources
19
20
I/O Ports
Ports A, B, C, (E)
Ports A, B, C, D, E
Timers
4
Capture/Compare/PWM Modules
2
1
Enhanced Capture/Compare/
PWM Modules
00
1
Serial Communications
MSSP,
Enhanced USART
MSSP,
Enhanced USART
MSSP,
Enhanced USART
MSSP,
Enhanced USART
Parallel Communications (PSP)
No
Yes
10-Bit Analog-to-Digital Module
10 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
Detect
Yes
Programmable Brown-out Reset
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 SPDIP
28-Pin SOIC
40-Pin PDIP
44-Pin QFN
44-Pin TQFP
40-Pin PDIP
44-Pin QFN
44-Pin TQFP