PIC18F2420/2520/4420/4520
Data Sheet
28/40/44-Pin Enhanced Flash
Microcontrollers with 10-Bit A/D
and nanoWatt Technology
©
2008 Microchip Technology Inc.
DS39631E
Note the following details of the code protection feature on Microchip devices:
•
•
•
Microchip products meet the specification contained in their particular Microchip Data Sheet.
Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the
intended manner and under normal conditions.
There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data
Sheets. Most likely, the person doing so is engaged in theft of intellectual property.
Microchip is willing to work with the customer who is concerned about the integrity of their code.
Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not
mean that we are guaranteeing the product as “unbreakable.”
•
•
Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our
products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.
Information contained in this publication regarding device
applications and the like is provided only for your convenience
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
MICROCHIP MAKES NO REPRESENTATIONS OR
WARRANTIES OF ANY KIND WHETHER EXPRESS OR
IMPLIED, WRITTEN OR ORAL, STATUTORY OR
OTHERWISE, RELATED TO THE INFORMATION,
INCLUDING BUT NOT LIMITED TO ITS CONDITION,
QUALITY, PERFORMANCE, MERCHANTABILITY OR
FITNESS FOR PURPOSE. Microchip disclaims all liability
arising from this information and its use. Use of Microchip
devices in life support and/or safety applications is entirely at
the buyer’s risk, and the buyer agrees to defend, indemnify and
hold harmless Microchip from any and all damages, claims,
suits, or expenses resulting from such use. No licenses are
conveyed, implicitly or otherwise, under any Microchip
intellectual property rights.
Trademarks
The Microchip name and logo, the Microchip logo, Accuron,
dsPIC, K
EE
L
OQ
, K
EE
L
OQ
logo, MPLAB, PIC, PICmicro,
PICSTART, rfPIC, SmartShunt and UNI/O are registered
trademarks of Microchip Technology Incorporated in the
U.S.A. and other countries.
FilterLab, Linear Active Thermistor, MXDEV, MXLAB,
SEEVAL, SmartSensor and The Embedded Control Solutions
Company are registered trademarks of Microchip Technology
Incorporated in the U.S.A.
Analog-for-the-Digital Age, Application Maestro, CodeGuard,
dsPICDEM, dsPICDEM.net, dsPICworks, dsSPEAK, ECAN,
ECONOMONITOR, FanSense, In-Circuit Serial
Programming, ICSP, ICEPIC, Mindi, MiWi, MPASM, MPLAB
Certified logo, MPLIB, MPLINK, mTouch, PICkit, PICDEM,
PICDEM.net, PICtail, PIC
32
logo, PowerCal, PowerInfo,
PowerMate, PowerTool, REAL ICE, rfLAB, Select Mode, Total
Endurance, WiperLock and ZENA are trademarks of
Microchip Technology Incorporated in the U.S.A. and other
countries.
SQTP is a service mark of Microchip Technology Incorporated
in the U.S.A.
All other trademarks mentioned herein are property of their
respective companies.
© 2008, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.
Printed on recycled paper.
Microchip received ISO/TS-16949:2002 certification for its worldwide
headquarters, design and wafer fabrication facilities in Chandler and
Tempe, Arizona; Gresham, Oregon and design centers in California
and India. The Company’s quality system processes and procedures
are for its PIC
®
MCUs and dsPIC
®
DSCs, K
EE
L
OQ
®
code hopping
devices, Serial EEPROMs, microperipherals, nonvolatile memory and
analog products. In addition, Microchip’s quality system for the design
and manufacture of development systems is ISO 9001:2000 certified.
DS39631E-page ii
©
2008 Microchip Technology Inc.
PIC18F2420/2520/4420/4520
28/40/44-Pin Enhanced Flash Microcontrollers with
10-Bit A/D and nanoWatt Technology
Power Management Features:
•
•
•
•
•
•
•
•
•
•
Run: CPU on, Peripherals on
Idle: CPU off, Peripherals on
Sleep: CPU off, Peripherals off
Ultra Low 50nA Input Leakage
Run mode Currents Down to 11
μA
Typical
Idle mode Currents Down to 2.5
μA
Typical
Sleep mode Current Down to 100 nA Typical
Timer1 Oscillator: 900 nA, 32 kHz, 2V
Watchdog Timer: 1.4
μA,
2V Typical
Two-Speed Oscillator Start-up
Peripheral Highlights (Continued):
• Master Synchronous Serial Port (MSSP) module
Supporting 3-Wire SPI (all 4 modes) and I
2
C™
Master and Slave modes
• Enhanced Addressable USART module:
- Supports RS-485, RS-232 and LIN/J2602
- RS-232 operation using internal oscillator
block (no external crystal required)
- Auto-wake-up on Start bit
- Auto-Baud Detect
• 10-Bit, up to 13-Channel Analog-to-Digital (A/D)
Converter module:
- Auto-acquisition capability
- Conversion available during Sleep
• Dual Analog Comparators with Input Multiplexing
• Programmable 16-Level High/Low-Voltage
Detection (HLVD) module:
- Supports interrupt on High/Low-Voltage Detection
Flexible Oscillator Structure:
• Four Crystal modes, up to 40 MHz
• 4x Phase Lock Loop (PLL) – Available for Crystal
and Internal Oscillators
• Two External RC modes, up to 4 MHz
• Two External Clock modes, up to 40 MHz
• Internal Oscillator Block:
- Fast wake from Sleep and Idle, 1
μs
typical
- 8 use-selectable frequencies, from 31 kHz to
8 MHz
- Provides a complete range of clock speeds
from 31 kHz to 32 MHz when used with PLL
- User-tunable to compensate for frequency drift
• Secondary Oscillator using Timer1 @ 32 kHz
• Fail-Safe Clock Monitor:
- Allows for safe shutdown if peripheral clock stops
Special Microcontroller Features:
• C Compiler Optimized Architecture:
- Optional extended instruction set designed to
optimize re-entrant code
• 100,000 Erase/Write Cycle Enhanced Flash
Program Memory Typical
• 1,000,000 Erase/Write Cycle Data EEPROM
Memory Typical
• Flash/Data EEPROM Retention: 100 Years Typical
• Self-Programmable under Software Control
• Priority Levels for Interrupts
• 8 x 8 Single-Cycle Hardware Multiplier
• Extended Watchdog Timer (WDT):
- Programmable period from 4 ms to 131s
• Single-Supply 5V In-Circuit Serial
Programming™ (ICSP™) via Two Pins
• In-Circuit Debug (ICD) via Two Pins
• Wide Operating Voltage Range: 2.0V to 5.5V
• Programmable Brown-out Reset (BOR) with
Software Enable Option
CCP/
ECCP
(PWM)
2/0
2/0
1/1
1/1
MSSP
SPI
Y
Y
Y
Y
Master
I
2
C™
Y
Y
Y
Y
EUSART
Peripheral Highlights:
High-Current Sink/Source 25 mA/25 mA
Three Programmable External Interrupts
Four Input Change Interrupts
Up to 2 Capture/Compare/PWM (CCP) modules,
one with Auto-Shutdown (28-pin devices)
• Enhanced Capture/Compare/PWM (ECCP)
module (40/44-pin devices only):
- One, two or four PWM outputs
- Selectable polarity
- Programmable dead time
- Auto-shutdown and auto-restart
-
•
•
•
•
Program Memory
Device
PIC18F2420
PIC18F2520
PIC18F4420
PIC18F4520
Data Memory
I/O
25
25
36
36
Flash # Single-Word SRAM EEPROM
(bytes) Instructions (bytes) (bytes)
16K
32K
16K
32K
8192
16384
8192
16384
768
1536
768
1536
256
256
256
256
10-Bit
A/D (ch)
10
10
13
13
Comp.
2
2
2
2
Timers
8/16-Bit
1/3
1/3
1/3
1/3
1
1
1
1
©
2008 Microchip Technology Inc.
DS39631E-page 1
PIC18F2420/2520/4420/4520
Pin Diagrams
28-Pin SPDIP, SOIC
MCLR/V
PP
/RE3
RA0/AN0
RA1/AN1
RA2/AN2/V
REF
-/CV
REF
RA3/AN3/V
REF
+
RA4/T0CKI/C1OUT
RA5/AN4/SS/HLVDIN/C2OUT
V
SS
OSC1/CLKI/RA7
OSC2/CLKO/RA6
RC0/T1OSO/T13CKI
RC1/T1OSI/CCP2
(1)
RC2/CCP1
RC3/SCK/SCL
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
RB7/KBI3/PGD
RB6//KBI2/PGC
RB5/KBI1/PGM
RB4/KBI0/AN11
RB3/AN9/CCP2
(1)
RB2/INT2/AN8
RB1/INT1/AN10
RB0/INT0/FLT0/AN12
V
DD
V
SS
RC7/RX/DT
RC6/TX/CK
RC5/SDO
RC4/SDI/SDA
28-Pin QFN
RA1/AN1
RA0/AN0
RA2/AN2/V
REF
-/CV
REF
RA3/AN3/V
REF
+
RA4/T0CKI/C1OUT
RA5/AN4/SS/HLVDIN/C2OUT
V
SS
OSC1/CLKI/RA7
OSC2/CLKO/RA6
1
2
3
4
5
6
7
28 27 26 25 24 23 22
21
20
19
18
17
16
15
RB3/AN9/CCP2
(1)
RB2/INT2/AN8
RB1/INT1/AN10
RB0/INT0/FLT0/AN12
V
DD
V
SS
RC7/RX/DT
PIC18F2420
PIC18F2520
8 9 10 11 12 13 14
40-Pin PDIP
MCLR/V
PP
/RE3
RA0/AN0
RA1/AN1
RA2/AN2/V
REF
-/CV
REF
RA3/AN3/V
REF
+
RA4/T0CKI/C1OUT
RA5/AN4/SS/HLVDIN/C2OUT
RE0/RD/AN5
RE1/WR/AN6
RE2/CS/AN7
V
DD
V
SS
OSC1/CLKI/RA7
OSC2/CLKO/RA6
RC0/T1OSO/T13CKI
RC1/T1OSI/CCP2
(1)
RC2/CCP1/P1A
RC3/SCK/SCL
RD0/PSP0
RD1/PSP1
RC0/T1OSO/T13CKI
RC1/T1OSI/CCP2
(1)
RC2/CCP1
RC3/SCK/SCL
RC4/SDI/SDA
RC5/SDO
RC6/TX/CK
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
MCLR/V
PP
/RE3
RB7/KBI3/PGD
RB6/KBI2/PGC
RB5/KBI1/PGM
RB4KBI0/AN11
PIC18F2420
PIC18F2520
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
RB7/KBI3/PGD
RB6/KBI2/PGC
RB5/KBI1/PGM
RB4/KBI0/AN11
RB3/AN9/CCP2
(1)
RB2/INT2/AN8
RB1/INT1/AN10
RB0/INT0/FLT0/AN12
V
DD
V
SS
RD7/PSP7/P1D
RD6/PSP6/P1C
RD5/PSP5/P1B
RD4/PSP4
RC7/RX/DT
RC6/TX/CK
RC5/SDO
RC4/SDI/SDA
RD3/PSP3
RD2/PSP2
Note 1:
RB3 is the alternate pin for CCP2 multiplexing.
PIC18F4420
PIC18F4520
DS39631E-page 2
©
2008 Microchip Technology Inc.
PIC18F2420/2520/4420/4520
Pin Diagrams (Cont.’d)
44-pin TQFP
RC6/TX/CK
RC5/SDO
RC4/SDI/SDA
RD3/PSP3
RD2/PSP2
RD1/PSP1
RD0/PSP0
RC3/SCK/SCL
RC2/CCP1/P1A
RC1/T1OSI/CCP2
(1)
NC
44
43
42
41
40
39
38
37
36
35
34
44-pin QFN
44
43
42
41
40
39
38
37
36
35
34
RC6/TX/CK
RC5/SDO
RC4/SDI/SDA
RD3/PSP3
RD2/PSP2
RD1/PSP1
RD0/PSP0
RC3/SCK/SCL
RC2/CCP1/P1A
RC1/T1OSI/CCP2
(1)
RC0/T1OSO/T13CKI
NC
NC
RB4/KBI0/AN11
RB5/KBI1/PGM
RB6/KBI2/PGC
RB7/KBI3/PGD
MCLR/V
PP
/RE3
RA0/AN0
RA1/AN1
RA2/AN2/V
REF
-/CV
REF
RA3/AN3/V
REF
+
12
13
14
15
16
17
18
19
20
21
22
RC7/RX/DT
RD4/PSP4
RD5/PSP5/P1B
RD6/PSP6/P1C
RD7/PSP7/P1D
V
SS
V
DD
RB0/INT0/FLT0/AN12
RB1/INT1/AN10
RB2/INT2/AN8
RB3/AN9/CCP2
(1)
1
2
3
4
5
6
7
8
9
10
11
PIC18F4420
PIC18F4520
33
32
31
30
29
28
27
26
25
24
23
NC
RC0/T1OSO/T13CKI
OSC2/CLKO/RA6
OSC1/CLKI/RA7
V
SS
V
DD
RE2/CS/AN7
RE1/WR/AN6
RE0/RD/AN5
RA5/AN4/SS/HLVDIN/C2OUT
RA4/T0CKI/C1OUT
Note 1:
RB3 is the alternate pin for CCP2 multiplexing.
©
2008 Microchip Technology Inc.
RB3/AN9/CCP2
(1)
NC
RB4/KBI0/AN11
RB5/KBI1/PGM
RB6/KBI2/PGC
RB7/KBI3/PGD
MCLR/V
PP
/RE3
RA0/AN0
RA1/AN1
RA2/AN2/V
REF
-/CV
REF
RA3/AN3/V
REF
+
12
13
14
15
16
17
18
19
20
21
22
RC7/RX/DT
RD4/PSP4
RD5/PSP5/P1B
RD6/PSP6/P1C
RD7/PSP7/P1D
V
SS
V
DD
V
DD
RB0/INT0/FLT0/AN12
RB1/INT1/AN10
RB2/INT2/AN8
1
2
3
4
5
6
7
8
9
10
11
PIC18F4420
PIC18F4520
33
32
31
30
29
28
27
26
25
24
23
OSC2/CLKO/RA6
OSC1/CLKI/RA7
V
SS
V
SS
V
DD
V
DD
RE2/CS/AN7
RE1/WR/AN6
RE0/RD/AN5
RA5/AN4/SS/HLVDIN/C2OUT
RA4/T0CKI/C1OUT
DS39631E-page 3
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