PIC16F876A-E/SS Microchip Technology, PIC16F876A-E/SS Datasheet - Page 199

• Manufacturer Part Number: PIC16F876A-E/SS
• Description: 28 PIN, 14KB ENH FLASH, 368 RAM, 22 I/O,
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F876A-E/SS

• Rohs Compliant: YES
• 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: 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-SSOP
• 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: 22
• Number Of Timers: 1 x 16 bit
• Operating Supply Voltage: 2 V to 5.5 V
• Maximum Operating Temperature: + 125 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: 5 bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

13.8
1997 Microchip Technology Inc.
Initialization
Example 13-1
caler and postscaler.
Example 13-1:
;
; The Timer2 interrupt is disabled, do polling on the overflow bit
;
T2_OVFL_WAIT
;
; Timer has overflowed
;
CLRF
CLRF
CLRF
BSF
CLRF
BCF
CLRF
MOVLW
MOVWF
BSF
BTFSS
GOTO
BCF
shows how to initialize the Timer2 module, including specifying the Timer2 pres-
T2CON
TMR2
INTCON
STATUS, RP0
PIE1
STATUS, RP0
PIR1
0x72
T2CON
T2CON, TMR2ON ; Timer2 starts to increment
PIR1, TMR2IF
T2_OVFL_WAIT
PIR1, TMR2IF
Timer2 Initialization
; Stop Timer2, Prescaler = 1:1,
;
; Clear Timer2 register
; Disable interrupts
; Bank1
; Disable peripheral interrupts
; Bank0
; Clear peripheral interrupts Flags
; Postscaler = 1:15, Prescaler = 1:16
;
; Has TMR2 interrupt occurred?
; NO, continue loop
; YES, clear flag and continue.
Postscaler = 1:1
Timer2 is off
Section 13. Timer2
DS31013A-page 13-5
13