PIC16F677-I/P Microchip Technology, PIC16F677-I/P Datasheet - Page 206
![IC PIC MCU FLASH 2KX14 20DIP](/photos/12/13/121303/150-20-dip_sml.jpg)
PIC16F677-I/P
Manufacturer Part Number
PIC16F677-I/P
Description
IC PIC MCU FLASH 2KX14 20DIP
Manufacturer
Microchip Technology
Series
PIC® 16Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC16F690DM-PCTLHS.pdf
(306 pages)
3.PIC16F677-IP.pdf
(2 pages)
4.PIC16F677-IP.pdf
(16 pages)
5.PIC16F677-ISO.pdf
(294 pages)
Specifications of PIC16F677-I/P
Program Memory Type
FLASH
Program Memory Size
3.5KB (2K x 14)
Package / Case
20-DIP (0.300", 7.62mm)
Mfg Application Notes
Intro to Capacitive Sensing Appl Notes Layout and Physical Design Appl Note
Core Processor
PIC
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, SPI
Peripherals
Brown-out Detect/Reset, POR, WDT
Number Of I /o
18
Eeprom Size
256 x 8
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
2 V ~ 5.5 V
Data Converters
A/D 12x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Processor Series
PIC16F
Core
PIC
Data Bus Width
8 bit
Data Ram Size
128 B
Interface Type
SSP
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
17
Number Of Timers
2
Operating Supply Voltage
2 V to 5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
Through Hole
3rd Party Development Tools
52715-96, 52716-328, 52717-734
Development Tools By Supplier
PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, DM163014, DM164120-4
Minimum Operating Temperature
- 40 C
On-chip Adc
12-ch x 10-bit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
AC162061 - HEADER INTRFC MPLAB ICD2 20PINACICE0203 - MPLABICE 20P 300 MIL ADAPTER
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC16F677-I/P
Manufacturer:
MICROCHIP
Quantity:
2 000
PIC16F631/677/685/687/689/690
14.3
The PIC16F631/677/685/687/689/690 have multiple
sources of interrupt:
• External Interrupt RA2/INT
• TMR0 Overflow Interrupt
• PORTA/PORTB Change Interrupts
• 2 Comparator Interrupts
• A/D Interrupt (except PIC16F631)
• Timer1 Overflow Interrupt
• Timer2 Match Interrupt (PIC16F685/PIC16F690
• EEPROM Data Write Interrupt
• Fail-Safe Clock Monitor Interrupt
• Enhanced CCP Interrupt (PIC16F685/PIC16F690
• EUSART Receive and Transmit interrupts
The Interrupt Control register (INTCON) and Peripheral
Interrupt Request Register 1 (PIR1) record individual
interrupt requests in flag bits. The INTCON register
also has individual and global interrupt enable bits.
A Global Interrupt Enable bit, GIE (INTCON<7>),
enables (if set) all unmasked interrupts, or disables (if
cleared) all interrupts. Individual interrupts can be
disabled through their corresponding enable bits in the
INTCON, PIE1 and PIE2 registers, respectively. GIE is
cleared on Reset.
The Return from Interrupt instruction, RETFIE, exits
the interrupt routine, as well as sets the GIE bit, which
re-enables unmasked interrupts.
The following interrupt flags are contained in the
INTCON register:
• INT Pin Interrupt
• PORTA/PORTB Change Interrupts
• TMR0 Overflow Interrupt
The peripheral interrupt flags are contained in the PIR1
and PIR2 registers. The corresponding interrupt enable
bits are contained in PIE1 and PIE2 registers.
The following interrupt flags are contained in the PIR1
register:
• A/D Interrupt
• EUSART Receive and Transmit Interrupts
• Timer1 Overflow Interrupt
• Synchronous Serial Port (SSP) Interrupt
• Enhanced CCP1 Interrupt
• Timer1 Overflow Interrupt
• Timer2 Match Interrupt
The following interrupt flags are contained in the PIR2
register:
• Fail-Safe Clock Monitor Interrupt
• 2 Comparator Interrupts
• EEPROM Data Write Interrupt
DS41262C-page 204
only)
only)
(PIC16F687/PIC16F689/PIC16F690 only)
Interrupts
Preliminary
When an interrupt is serviced:
• The GIE is cleared to disable any further interrupt.
• The return address is pushed onto the stack.
• The PC is loaded with 0004h.
For external interrupt events, such as the INT pin,
PORTA/PORTB change
latency will be three or four instruction cycles. The
exact latency depends upon when the interrupt event
occurs (see Figure 14-8). The latency is the same for
one or two-cycle instructions. Once in the Interrupt
Service Routine, the source(s) of the interrupt can be
determined by polling the interrupt flag bits. The
interrupt flag bit(s) must be cleared in software before
re-enabling interrupts to avoid multiple interrupt
requests.
For
comparators, A/D, data EEPROM, EUSART, SSP or
Enhanced CCP modules, refer to the respective
peripheral section.
14.3.1
External interrupt on RA2/INT pin is edge-triggered;
either rising if the INTEDG bit (OPTION_REG<6>) is
set, or falling, if the INTEDG bit is clear. When a valid
edge appears on the RA2/INT pin, the INTF bit
(INTCON<1>) is set. This interrupt can be disabled by
clearing the INTE control bit (INTCON<4>). The INTF
bit must be cleared in software in the Interrupt Service
Routine before re-enabling this interrupt. The RA2/INT
interrupt can wake-up the processor from Sleep, if the
INTE bit was set prior to going into Sleep. The status of
the GIE bit decides whether or not the processor
branches to the interrupt vector following wake-up
(0004h). See Section 14.6 “Power-Down Mode
(Sleep)” for details on Sleep and Figure 14-10 for
timing of wake-up from Sleep through RA2/INT
interrupt.
Note:
Note 1: Individual interrupt flag bits are set,
additional
2: When an instruction that clears the GIE
RA2/INT INTERRUPT
The ANSEL and CM2CON0 registers
must be initialized to configure an analog
channel as a digital input. Pins configured
as analog inputs will read ‘0’.
regardless
corresponding mask bit or the GIE bit.
bit is executed, any interrupts that were
pending for execution in the next cycle
are ignored. The interrupts, which were
ignored, are still pending to be serviced
when the GIE bit is set again.
information
© 2006 Microchip Technology Inc.
of
interrupts, the interrupt
the
on
status
Timer1,
of
Timer2,
their