鈥?/div>
Special Microcontroller Features:
鈥?C compiler optimized architecture with optional
extended instruction set
鈥?100,000 erase/write cycle Enhanced Flash
program memory typical
鈥?1,000,000 erase/write cycle data EEPROM
memory typical
鈥?Flash/data EEPROM retention: > 40 years
鈥?Self-programmable under software control
鈥?Priority levels for interrupts
鈥?8 x 8 Single Cycle Hardware Multiplier
鈥?Extended Watchdog Timer (WDT):
- Programmable period from 41 ms to 131s
鈥?Programmable Code Protection
鈥?Single-supply 5V In-Circuit Serial Programming鈩?/div>
(ICSP鈩? via two pins
鈥?In-Circuit Debug (ICD) via two pins
鈥?Wide operating voltage range (2.0V to 5.5V)
EAUSART
MSSP
I/O
10-bit
A/D
(ch)
10
10
13
13
CCP/
ECCP
(PWM)
2/0
2/0
1/1
1/1
SPP
SPI
Y
Y
Y
Y
Master
I
2
C
Y
Y
Y
Y
Comparators
2
2
2
2
Flexible Oscillator Structure:
鈥?Five Crystal modes, including High-Precision PLL
for USB
鈥?Two External RC modes, up to 4 MHz
鈥?Two External Clock modes, up to 40 MHz
鈥?Internal oscillator block:
- 8 user selectable frequencies, from 31 kHz to 8 MHz
- User tunable to compensate for frequency drift
鈥?Secondary oscillator using Timer1 @ 32 kHz
鈥?Fail-Safe Clock Monitor
- Allows for safe shutdown if any clock stops
Program Memory
Device
Data Memory
# Single-
FLASH
SRAM EEPROM
Word
(bytes)
(bytes) (bytes)
Instructions
24K
32K
24K
32K
12288
16384
12288
16384
2048
2048
2048
2048
256
256
256
256
Timers
8/16-bit
1/3
1/3
1/3
1/3
PIC18F2455
PIC18F2550
PIC18F4455
PIC18F4550
24
24
35
35
No
No
Yes
Yes
1
1
1
1
铮?/div>
2003 Microchip Technology Inc.
Advance Information
DS39617A-page 1
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