PIC16F7X
28/40-Pin 8-Bit CMOS FLASH Microcontrollers
Devices Included in this Data Sheet:
• PIC16F73
• PIC16F74
• PIC16F76
• PIC16F77
Pin Diagram
PDIP
MCLR/V
PP
RA0/AN0
RA1/AN1
RA2/AN2
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
7
8
9
10
11
12
13
14
15
16
17
18
19
20
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
RB7
RB6
RB5
RB4
RB3
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)
• Pinout compatible to the PIC16C73B/74B/76/77
• Pinout compatible to the PIC16F873/874/876/877
• Interrupt capability (up to 12 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 technology
• Fully static design
• In-Circuit Serial Programming (ICSP) via two
pins
• Processor read access to program memory
• Wide operating voltage range: 2.0V to 5.5V
• High Sink/Source Current: 25 mA
• Industrial temperature range
• Low power consumption:
- < 2 mA typical @ 5V, 4 MHz
- 20
µA
typical @ 3V, 32 kHz
- < 1
µA
typical standby current
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
• 8-bit multi-channel Analog-to-Digital converter
• Synchronous Serial Port (SSP) with SPI
(Master
mode) and I
2
C
(Slave)
• Universal Synchronous Asynchronous Receiver
Transmitter (USART/SCI)
• 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)
2000 Microchip Technology Inc.
Advance Information
PIC16F77/74
DS30325A-page 1
PIC16F7X
Pin Diagrams
DIP, SOIC, SSOP
MCLR/V
PP
RA0/AN0
RA1/AN1
RA2/AN2
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
RB6
RB5
RB4
RB3
RB2
RB1
RB0/INT
V
DD
V
SS
RC7/RX/DT
RC6/TX/CK
RC5/SDO
RC4/SDI/SDA
PIC16F76/73
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
RB7
MCLR/V
PP
RA0/AN0
RA1/AN1
RA2/AN2
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
1
2
3
4
5
6
7
8
9
10
11
PIC16F77
PIC16F74
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
DS30325A-page 2
Advance Information
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
6
5
4
3
2
1
44
43
42
41
40
RA3/AN3/V
REF
RA2/AN2
RA1/AN1
RA0/AN0
MCLR/V
PP
NC
RB7
RB6
RB5
RB4
NC
39
38
37
36
35
34
33
32
31
30
9
7
8
9
10
11
12
13
14
15
16
17
PIC16F77
PIC16F74
RB3
RB2
RB1
RB0/INT
V
DD
V
SS
RD7/PSP7
RD6/PSP6
RD5/PSP5
RD4/PSP4
RC7/RX/DT
2000 Microchip Technology Inc.
PIC16F7X
Key Features
PICmicro™ Mid-Range Reference Manual
(DS33023)
PIC16F73
PIC16F74
PIC16F76
PIC16F77
Operating Frequency
RESETS (and Delays)
FLASH Program Memory
(14-bit words, 100 E/W cycles)
Data Memory (bytes)
Interrupts
I/O Ports
Timers
Capture/Compare/PWM Modules
Serial Communications
Parallel Communications
8-bit Analog-to-Digital Module
Instruction Set
DC - 20 MHz
POR, BOR
(PWRT, OST)
4K
192
11
Ports A,B,C
3
2
SSP, USART
—
35 Instructions
DC - 20 MHz
POR, BOR
(PWRT, OST)
4K
192
12
Ports A,B,C,D,E
3
2
SSP, USART
PSP
35 Instructions
DC - 20 MHz
POR, BOR
(PWRT, OST)
8K
368
11
Ports A,B,C
3
2
SSP, USART
—
35 Instructions
DC - 20 MHz
POR, BOR
(PWRT, OST)
8K
368
12
Ports A,B,C,D,E
3
2
SSP, USART
PSP
35 Instructions
5 Input Channels 8 Input Channels 5 Input Channels 8 Input Channels
2000 Microchip Technology Inc.
Advance Information
DS30325A-page 3
PIC16F7X
Table of Contents
1.0
Device Overview ............................................................................................................................................................ 5
2.0
Memory Organization .................................................................................................................................................. 11
3.0
I/O Ports....................................................................................................................................................................... 29
4.0
Reading Program Memory........................................................................................................................................... 41
5.0
Timer0 Module ............................................................................................................................................................. 45
6.0
Timer1 Module ............................................................................................................................................................. 49
7.0
Timer2 Module ............................................................................................................................................................. 53
8.0
Capture/Compare/PWM Modules ................................................................................................................................ 55
9.0
Synchronous Serial Port (SSP) Module....................................................................................................................... 61
10.0
Universal Synchronous Asynchronous Receiver Transmitter (USART) ...................................................................... 73
11.0
Analog-to-Digital Converter (A/D) Module ................................................................................................................... 89
12.0
Special Features of the CPU ....................................................................................................................................... 95
13.0
Instruction Set Summary ........................................................................................................................................... 111
14.0
Development Support ................................................................................................................................................ 119
15.0
Electrical Characteristics ........................................................................................................................................... 125
16.0
DC and AC Characteristics Graphs and Tables ........................................................................................................ 147
17.0
Packaging Information ............................................................................................................................................... 149
Appendix A: Revision History ......................................................................................................................................................... 157
Appendix B: Device Differences..................................................................................................................................................... 157
Appendix C: Conversion Considerations ....................................................................................................................................... 157
Index .................................................................................................................................................................................................. 159
On-Line Support................................................................................................................................................................................. 165
Reader Response .............................................................................................................................................................................. 166
PIC16F7X Product Identification System ........................................................................................................................................... 167
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Errata
An errata sheet, describing minor operational differences from the data sheet and recommended workarounds, may exist for current
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DS30325A-page 4
Advance Information
2000 Microchip Technology Inc.
PIC16F7X
1.0
DEVICE OVERVIEW
This document contains device specific information.
Additional information may be found in the PICmicro™
Mid-Range Reference Manual (DS33023), which may
be obtained from your local Microchip Sales Represen-
tative or downloaded from the Microchip web site. The
Reference Manual should be considered a comple-
mentary document to this data sheet, and is highly rec-
ommended reading for a better understanding of the
device architecture and operation of the peripheral
modules.
There are four devices (PIC16F73, PIC16F74,
PIC16F76 and PIC16F77) covered by this data sheet.
The PIC16F76/73 devices are available in 28-pin pack-
ages and the PIC16F77/74 devices are available in
40-pin packages. The 28-pin devices do not have a
Parallel Slave Port implemented.
The following two figures are device block diagrams
sorted by pin number; 28-pin for Figure 1-1 and 40-pin
for Figure 1-2. The 28-pin and 40-pin pinouts are listed
in Table 1-1 and Table 1-2, respectively.
FIGURE 1-1:
Device
PIC16F73
PIC16F76
PIC16F73 AND PIC16F76 BLOCK DIAGRAM
Program
FLASH
4K
8K
Data Memory
192 Bytes
368 Bytes
13
Program Counter
FLASH
Program
Memory
8 Level Stack
(13-bit)
Data Bus
8
PORTA
RA0/AN0
RA1/AN1
RA2/AN2/
RA3/AN3/V
REF
RA4/T0CKI
RA5/AN4/SS
PORTB
RB0/INT
RB1
RB2
RB3/PGM
RB4
RB5
RB6/PGC
RB7/PGD
RC0/T1OSO/T1CKI
RC1/T1OSI/CCP2
RC2/CCP1
RC3/SCK/SCL
RC4/SDI/SDA
RC5/SDO
RC6/TX/CK
RC7/RX/DT
RAM
File
Registers
Program
Bus
14
Instruction reg
Direct Addr
7
RAM Addr (1)
9
Addr MUX
8
Indirect
Addr
FSR reg
STATUS reg
8
3
PORTC
Power-up
Timer
Instruction
Decode &
Control
Timing
Generation
OSC1/CLKIN
OSC2/CLKOUT
Oscillator
Start-up Timer
Power-on
Reset
Watchdog
Timer
Brown-out
Reset
8
MUX
ALU
W reg
MCLR
V
DD
, V
SS
Timer0
Timer1
Timer2
8-bit A/D
CCP1,2
Synchronous
Serial Port
USART
Note 1:
Higher order bits are from the STATUS register.
2000 Microchip Technology Inc.
Advance Information
DS30325A-page 5
