PIC16F87X
Data Sheet
28/40-Pin 8-Bit CMOS FLASH
Microcontrollers
2001 Microchip Technology Inc.
DS30292C
“All rights reserved. Copyright © 2001, Microchip Technology
Incorporated, USA. Information contained in this publication
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Microchip Technology Inc. in the U.S.A. and other countries.
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the property of their respective companies. No licenses are
conveyed, implicitly or otherwise, under any intellectual prop-
erty rights.”
Trademarks
The Microchip name, logo, PIC, PICmicro, PICMASTER, PIC-
START, PRO MATE, K
EE
L
OQ
, SEEVAL, MPLAB and The
Embedded Control Solutions Company are registered trade-
marks of Microchip Technology Incorporated in the U.S.A. and
other countries.
Total Endurance, ICSP, In-Circuit Serial Programming, Filter-
Lab, MXDEV, microID,
FlexROM, fuzzyLAB,
MPASM,
MPLINK, MPLIB, PICDEM, ICEPIC, Migratable Memory,
FanSense, ECONOMONITOR and SelectMode are trade-
marks of Microchip Technology Incorporated in the U.S.A.
Serialized Quick Term Programming (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.
© 2001, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.
Microchip received QS-9000 quality system
certification for its worldwide headquarters,
design and wafer fabrication facilities in
Chandler and Tempe, Arizona in July 1999. The
Company’s quality system processes and
procedures are QS-9000 compliant for its
PICmicro
®
8-bit MCUs, K
EE
L
OQ
®
code hopping
devices, Serial EEPROMs and microperipheral
products. In addition, Microchip’s quality
system for the design and manufacture of
development systems is ISO 9001 certified.
DS30292C - page ii
2001 Microchip Technology Inc.
PIC16F87X
28/40-Pin 8-Bit CMOS FLASH Microcontrollers
Devices Included in this Data Sheet:
• PIC16F873
• PIC16F874
• PIC16F876
• PIC16F877
Pin Diagram
PDIP
MCLR/V
PP
RA0/AN0
RA1/AN1
RA2/AN2/V
REF
-
RA3/AN3/V
REF
+
RA4/T0CKI
RA5/AN4/SS
RE0/RD/AN5
RE1/WR/AN6
RE2/CS/AN7
V
DD
V
SS
OSC1/CLKIN
OSC2/CLKOUT
RC0/T1OSO/T1CKI
RC1/T1OSI/CCP2
RC2/CCP1
RC3/SCK/SCL
RD0/PSP0
RD1/PSP1
1
2
3
4
5
6
8
9
10
11
12
13
14
15
16
17
18
19
20
40
39
38
37
36
35
RB7/PGD
RB6/PGC
RB5
RB4
RB3/PGM
RB2
RB1
RB0/INT
V
DD
V
SS
RD7/PSP7
RD6/PSP6
RD5/PSP5
RD4/PSP4
RC7/RX/DT
RC6/TX/CK
RC5/SDO
RC4/SDI/SDA
RD3/PSP3
RD2/PSP2
Microcontroller Core Features:
• High performance RISC CPU
• Only 35 single word instructions to learn
• All single cycle instructions except for program
branches which are two cycle
• Operating speed: DC - 20 MHz clock input
DC - 200 ns instruction cycle
• Up to 8K x 14 words of FLASH Program Memory,
Up to 368 x 8 bytes of Data Memory (RAM)
Up to 256 x 8 bytes of EEPROM Data Memory
• Pinout compatible to the PIC16C73B/74B/76/77
• Interrupt capability (up to 14 sources)
• Eight level deep hardware stack
• Direct, indirect and relative addressing modes
• Power-on Reset (POR)
• Power-up Timer (PWRT) and
Oscillator Start-up Timer (OST)
• Watchdog Timer (WDT) with its own on-chip RC
oscillator for reliable operation
• Programmable code protection
• Power saving SLEEP mode
• Selectable oscillator options
• Low power, high speed CMOS FLASH/EEPROM
technology
• Fully static design
• In-Circuit Serial Programming (ICSP) via two
pins
• Single 5V In-Circuit Serial Programming capability
• In-Circuit Debugging via two pins
• Processor read/write access to program memory
• Wide operating voltage range: 2.0V to 5.5V
• High Sink/Source Current: 25 mA
• Commercial, Industrial and Extended temperature
ranges
• Low-power consumption:
- < 0.6 mA typical @ 3V, 4 MHz
- 20
µA
typical @ 3V, 32 kHz
- < 1
µA
typical standby current
PIC16F877/874
7
34
33
32
31
30
29
28
27
26
25
24
23
22
21
Peripheral Features:
• Timer0: 8-bit timer/counter with 8-bit prescaler
• Timer1: 16-bit timer/counter with prescaler,
can be incremented during SLEEP via external
crystal/clock
• Timer2: 8-bit timer/counter with 8-bit period
register, prescaler and postscaler
• Two Capture, Compare, PWM modules
- Capture is 16-bit, max. resolution is 12.5 ns
- Compare is 16-bit, max. resolution is 200 ns
- PWM max. resolution is 10-bit
• 10-bit multi-channel Analog-to-Digital converter
• Synchronous Serial Port (SSP) with SPI
(Master
mode) and I
2
C
(Master/Slave)
• Universal Synchronous Asynchronous Receiver
Transmitter (USART/SCI) with 9-bit address
detection
• Parallel Slave Port (PSP) 8-bits wide, with
external RD, WR and CS controls (40/44-pin only)
• Brown-out detection circuitry for
Brown-out Reset (BOR)
2001 Microchip Technology Inc.
DS30292C-page 1
PIC16F87X
Pin Diagrams
PDIP, SOIC
MCLR/V
PP
RA0/AN0
RA1/AN1
RA2/AN2/V
REF
-
RA3/AN3/V
REF
+
RA4/T0CKI
RA5/AN4/SS
V
SS
OSC1/CLKIN
OSC2/CLKOUT
RC0/T1OSO/T1CKI
RC1/T1OSI/CCP2
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/PGD
RB6/PGC
RB5
RB4
RB3/PGM
RB2
RB1
RB0/INT
V
DD
V
SS
RC7/RX/DT
RC6/TX/CK
RC5/SDO
RC4/SDI/SDA
RA3/AN3/V
REF
+
RA2/AN2/V
REF
-
RA1/AN1
RA0/AN0
MCLR/V
PP
NC
RB7/PGD
RB6/PGC
RB5
RB4
NC
6
5
4
3
2
1
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
9
PIC16F876/873
PLCC
RC6/TX/CK
RC5/SDO
RC4/SDI/SDA
RD3/PSP3
RD2/PSP2
RD1/PSP1
RD0/PSP0
RC3/SCK/SCL
RC2/CCP1
RC1/T1OSI/CCP2
NC
QFP
44
43
42
41
40
39
38
37
36
35
34
NC
NC
RB4
RB5
RB6/PGC
RB7/PGD
MCLR/V
PP
RA0/AN0
RA1/AN1
RA2/AN2/V
REF
-
RA3/AN3/V
REF
+
12
13
14
15
16
17
18
19
20
21
22
RC7/RX/DT
RD4/PSP4
RD5/PSP5
RD6/PSP6
RD7/PSP7
V
SS
V
DD
RB0/INT
RB1
RB2
RB3/PGM
1
2
3
4
5
6
7
8
9
10
11
PIC16F877
PIC16F874
33
32
31
30
29
28
27
26
25
24
23
NC
RC0/T1OSO/T1CKI
OSC2/CLKOUT
OSC1/CLKIN
V
SS
V
DD
RE2/AN7/CS
RE1/AN6/WR
RE0/AN5/RD
RA5/AN4/SS
RA4/T0CKI
DS30292C-page 2
RC1/T1OSI/CCP2
RC2/CCP1
RC3/SCK/SCL
RD0/PSP0
RD1/PSP1
RD2/PSP2
RD3/PSP3
RC4/SDI/SDA
RC5/SDO
RC6/TX/CK
NC
18
19
20
21
22
23
24
25
26
27
282
RA4/T0CKI
RA5/AN4/SS
RE0/RD/AN5
RE1/WR/AN6
RE2/CS/AN7
V
DD
V
SS
OSC1/CLKIN
OSC2/CLKOUT
RC0/T1OSO/T1CK1
NC
7
8
9
10
11
12
13
14
15
16
17
PIC16F877
PIC16F874
RB3/PGM
RB2
RB1
RB0/INT
V
DD
V
SS
RD7/PSP7
RD6/PSP6
RD5/PSP5
RD4/PSP4
RC7/RX/DT
2001 Microchip Technology Inc.
PIC16F87X
Key Features
PICmicro™ Mid-Range Reference
Manual (DS33023)
Operating Frequency
RESETS (and Delays)
FLASH Program Memory
(14-bit words)
Data Memory (bytes)
EEPROM Data Memory
Interrupts
I/O Ports
Timers
Capture/Compare/PWM Modules
Serial Communications
Parallel Communications
10-bit Analog-to-Digital Module
Instruction Set
PIC16F873
DC - 20 MHz
POR, BOR
(PWRT, OST)
4K
192
128
13
Ports A,B,C
3
2
MSSP, USART
—
5 input channels
35 instructions
PIC16F874
DC - 20 MHz
POR, BOR
(PWRT, OST)
4K
192
128
14
Ports A,B,C,D,E
3
2
MSSP, USART
PSP
8 input channels
35 instructions
PIC16F876
DC - 20 MHz
POR, BOR
(PWRT, OST)
8K
368
256
13
Ports A,B,C
3
2
MSSP, USART
—
5 input channels
35 instructions
PIC16F877
DC - 20 MHz
POR, BOR
(PWRT, OST)
8K
368
256
14
Ports A,B,C,D,E
3
2
MSSP, USART
PSP
8 input channels
35 instructions
2001 Microchip Technology Inc.
DS30292C-page 3
