PIC16F76T-E/SO Microchip Technology, PIC16F76T-E/SO Datasheet - Page 177

• Manufacturer Part Number: PIC16F76T-E/SO
• Description: IC MCU FLASH 8KX14 A/D 28SOIC
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F76T-E/SO

• 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
• Ram Size: 368 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 5x8b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 28-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Other names: PIC16F76TE/SO

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