PIC16F877A-I/ML Microchip Technology, PIC16F877A-I/ML Datasheet - Page 191

• Manufacturer Part Number: PIC16F877A-I/ML
• Description: IC MCU FLASH 8KX14 A/D 44QFN
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F877A-I/ML

• Core Size: 8-Bit
• Program Memory Size: 14KB (8K x 14)
• Core Processor: PIC
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 33
• 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 8x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-QFN
• Controller Family/series: PIC16F
• No. Of I/o's: 33
• Eeprom Memory Size: 256Byte
• Ram Memory Size: 368Byte
• Cpu Speed: 20MHz
• No. Of Timers: 3
• Processor Series: PIC16F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 368 B
• Interface Type: I2C, SPI, USART
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 33
• Number Of Timers: 1 x 16 bit
• Operating Supply Voltage: 2 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 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
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XLT44QFN2 - SOCKET TRAN ICE 44QFN/40DIPAC164322 - MODULE SOCKET MPLAB PM3 28/44QFN444-1001 - DEMO BOARD FOR PICMICRO MCU
• Lead Free Status / Rohs Status: Details

1997 Microchip Technology Inc.
Example 12-6:
;
; The Timer1 interrupt is disabled, do polling on the overflow bit
;
T1_OVFL_WAIT
;
; Timer has overflowed
;
CLRF
CLRF
CLRF
CLRF
BSF
CLRF
BCF
CLRF
MOVLW
MOVWF
BSF
BTFSS
GOTO
BCF
T1CON
TMR1H
TMR1L
INTCON
STATUS, RP0
PIE1
STATUS, RP0
PIR1
0x3E
T1CON
T1CON, TMR1ON ; Timer1 starts to increment
PIR1, TMR1IF
T1_OVFL_WAIT
PIR1, TMR1IF
Timer1 Initialization (External Oscillator Clock Source)
; Stop Timer1, Internal Clock Source,
;
; Clear Timer1 High byte register
; Clear Timer1 Low byte register
; Disable interrupts
; Bank1
; Disable peripheral interrupts
; Bank0
; Clear peripheral interrupts Flags
; External Clock source with oscillator
;
;
;
T1 oscillator disabled, prescaler = 1:1
circuitry, 1:8 prescaler, Clock source
is asynchronous to device
Timer1 is stopped
Section 12. Timer1
DS31012A-page 12-11
12