PIC16F876-10E/SP Microchip Technology, PIC16F876-10E/SP Datasheet - Page 132
![IC MCU FLASH 8KX14 EE 28DIP](/photos/6/59/65908/150-28-dip_sml.jpg)
PIC16F876-10E/SP
Manufacturer Part Number
PIC16F876-10E/SP
Description
IC MCU FLASH 8KX14 EE 28DIP
Manufacturer
Microchip Technology
Series
PIC® 16Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC16F688T-ISL.pdf
(688 pages)
3.PIC16C770-ISO.pdf
(8 pages)
4.PIC16F873-04SO.pdf
(218 pages)
5.PIC16F873-04SO.pdf
(5 pages)
6.PIC16F873-04SO.pdf
(5 pages)
Specifications of PIC16F876-10E/SP
Core Processor
PIC
Core Size
8-Bit
Speed
10MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
22
Program Memory Size
14KB (8K x 14)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
368 x 8
Voltage - Supply (vcc/vdd)
4 V ~ 5.5 V
Data Converters
A/D 5x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 125°C
Package / Case
28-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
PIC16F87610E/SP
- PIC16F616T-ISL PDF datasheet
- PIC16F688T-ISL PDF datasheet #2
- PIC16C770-ISO PDF datasheet #3
- PIC16F873-04SO PDF datasheet #4
- PIC16F873-04SO PDF datasheet #5
- PIC16F873-04SO PDF datasheet #6
- Current page: 132 of 218
- Download datasheet (4Mb)
PIC16F87X
12.10.1
External interrupt on the RB0/INT pin is edge triggered,
either rising, if bit INTEDG (OPTION_REG<6>) is set,
or falling, if the INTEDG bit is clear. When a valid edge
appears
(INTCON<1>) is set. This interrupt can be disabled by
clearing enable bit INTE (INTCON<4>). Flag bit INTF
must be cleared in software in the Interrupt Service
Routine before re-enabling this interrupt. The INT inter-
rupt can wake-up the processor from SLEEP, if bit INTE
was set prior to going into SLEEP. The status of global
interrupt enable bit, GIE, decides whether or not the
processor branches to the interrupt vector following
wake-up. See Section 12.13 for details on SLEEP
mode.
12.10.2
An overflow (FFh
flag bit T0IF (INTCON<2>). The interrupt can be
enabled/disabled by setting/clearing enable bit T0IE
(INTCON<5>) (Section 5.0).
12.10.3
An input change on PORTB<7:4> sets flag bit RBIF
(INTCON<0>). The interrupt can be enabled/disabled
by setting/clearing enable bit RBIE (INTCON<4>)
(Section 3.2).
EXAMPLE 12-1:
DS30292C-page 130
MOVWF
SWAPF
CLRF
MOVWF
MOVF
MOVWF
CLRF
:
:(ISR)
:
MOVF
MOVWF
SWAPF
MOVWF
SWAPF
SWAPF
on
INT INTERRUPT
TMR0 INTERRUPT
PORTB INTCON CHANGE
the
W_TEMP
STATUS,W
STATUS
STATUS_TEMP
PCLATH, W
PCLATH_TEMP
PCLATH
PCLATH_TEMP, W
PCLATH
STATUS_TEMP,W
STATUS
W_TEMP,F
W_TEMP,W
00h) in the TMR0 register will set
RB0/INT
SAVING STATUS, W, AND PCLATH REGISTERS IN RAM
pin,
;Copy W to TEMP register
;Swap status to be saved into W
;bank 0, regardless of current bank, Clears IRP,RP1,RP0
;Save status to bank zero STATUS_TEMP register
;Only required if using pages 1, 2 and/or 3
;Save PCLATH into W
;Page zero, regardless of current page
;(Insert user code here)
;Restore PCLATH
;Move W into PCLATH
;Swap STATUS_TEMP register into W
;(sets bank to original state)
;Move W into STATUS register
;Swap W_TEMP
;Swap W_TEMP into W
flag
bit
INTF
12.11 Context Saving During Interrupts
During an interrupt, only the return PC value is saved
on the stack. Typically, users may wish to save key reg-
isters during an interrupt, (i.e., W register and STATUS
register). This will have to be implemented in software.
For the PIC16F873/874 devices, the register W_TEMP
must be defined in both banks 0 and 1 and must be
defined at the same offset from the bank base address
(i.e., If W_TEMP is defined at 0x20 in bank 0, it must
also be defined at 0xA0 in bank 1). The registers,
PCLATH_TEMP and STATUS_TEMP, are only defined
in bank 0.
Since the upper 16 bytes of each bank are common in
the PIC16F876/877 devices, temporary holding regis-
ters W_TEMP, STATUS_TEMP, and PCLATH_TEMP
should be placed in here. These 16 locations don’t
require banking and therefore, make it easier for con-
text save and restore. The same code shown in
Example 12-1 can be used.
2001 Microchip Technology Inc.
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