PIC16F87-E/ML Microchip Technology, PIC16F87-E/ML Datasheet - Page 177
PIC16F87-E/ML
Manufacturer Part Number
PIC16F87-E/ML
Description
IC MCU FLASH 4KX14 EEPROM 28QFN
Manufacturer
Microchip Technology
Series
PIC® 16Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC16F688T-ISL.pdf
(688 pages)
3.PIC16F818-ISO.pdf
(6 pages)
4.PIC16F87-IP.pdf
(228 pages)
5.PIC16F87-IP.pdf
(8 pages)
6.PIC16F87-IP.pdf
(4 pages)
7.PIC16F87-IP.pdf
(8 pages)
8.PIC16F87-IP.pdf
(24 pages)
Specifications of PIC16F87-E/ML
Core Processor
PIC
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
16
Program Memory Size
7KB (4K 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
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
For Use With
XLT28QFN3 - SOCKET TRAN ICE 18DIP/28QFNAC164033 - ADAPTER 28QFN TO 18DIPDV007003 - PROGRAMMER UNIVERSAL PROMATE II
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Data Converters
-
- PIC16F616T-ISL PDF datasheet
- PIC16F688T-ISL PDF datasheet #2
- PIC16F818-ISO PDF datasheet #3
- PIC16F87-IP PDF datasheet #4
- PIC16F87-IP PDF datasheet #5
- PIC16F87-IP PDF datasheet #6
- PIC16F87-IP PDF datasheet #7
- PIC16F87-IP PDF datasheet #8
- Current page: 177 of 688
- Download datasheet (3Mb)
11.6.2
1997 Microchip Technology Inc.
Initialization
Since Timer0 has a software programmable clock source, there are two examples to show the
initialization of Timer0 with each source.
clock source (timer mode), while
source (counter mode).
Example 11-3: Timer0 Initialization (Internal Clock Source)
Example 11-4: Timer0 Initialization (External Clock Source)
;**
;**
;
; The TMR0 interrupt is disabled, do polling on the overflow bit
;
T0_OVFL_WAIT
; Timer has overflowed
;** BSF
;** BSF
;
; The TMR0 interrupt is disabled, do polling on the overflow bit
;
T0_OVFL_WAIT
; Timer has overflowed
CLRF
CLRF
BSF
MOVLW
MOVWF
BCF
BTFSS
GOTO
CLRF
CLRF
BSF
MOVLW
MOVWF
BCF
BSF
BSF
BTFSS
GOTO
TMR0
INTCON
STATUS, RP0
0x37
OPTION_REG
STATUS, RP0
INTCON, T0IE
INTCON, GIE
INTCON, T0IF
T0_OVFL_WAIT
TMR0
INTCON
STATUS, RP0
0xC3
OPTION_REG
STATUS, RP0
INTCON, T0IE
INTCON, GIE
INTCON, T0IF
T0_OVFL_WAIT
; Clear Timer0 register
; Disable interrupts and clear T0IF
; Bank1
; PortB pull-ups are enabled,
;
;
;
;
; Bank0
; Enable TMR0 interrupt
; Enable all interrupts
Example 11-4
; Clear Timer0 register
; Disable interrupts and clear T0IF
; Bank1
; PortB pull-ups are disabled,
;
;
;
; Bank0
; Enable TMR0 interrupt
; Enable all interrupts
Interrupt on falling edge of RB0
Timer0 increment from external clock
on the high-to-low transition of T0CKI
with a prescaler of 1:256.
Interrupt on rising edge of RB0
Timer0 increment from internal clock
with a prescaler of 1:16.
Example 11-3
Section 11. Timer0
shows the initialization for the external clock
shows the initialization for the internal
DS31011A-page 11-9
11
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