PIC16F877-20I/P Microchip Technology, PIC16F877-20I/P Datasheet - Page 177
![IC MCU FLASH 8KX14 EE 40DIP](/photos/6/61/66192/150-40-dip_sml.jpg)
PIC16F877-20I/P
Manufacturer Part Number
PIC16F877-20I/P
Description
IC MCU FLASH 8KX14 EE 40DIP
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 PIC16F877-20I/P
Program Memory Type
FLASH
Program Memory Size
14KB (8K x 14)
Package / Case
40-DIP (0.600", 15.24mm)
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
33
Eeprom Size
256 x 8
Ram Size
368 x 8
Voltage - Supply (vcc/vdd)
4 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Processor Series
PIC16F
Core
PIC
Data Bus Width
8 bit
Data Ram Size
368 B
Interface Type
MSSP/PSP/USART
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
33
Number Of Timers
3
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, DM163022, DV164120
Minimum Operating Temperature
- 40 C
On-chip Adc
8-ch x 10-bit
Rohs Compliant
YES
Data Rom Size
256 B
Height
3.81 mm
Length
52.26 mm
Supply Voltage (max)
5.5 V
Supply Voltage (min)
4 V
Width
13.84 mm
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
444-1001 - DEMO BOARD FOR PICMICRO MCU
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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- 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: 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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