PIC16F946-E/PT Microchip Technology, PIC16F946-E/PT Datasheet - Page 25

• Manufacturer Part Number: PIC16F946-E/PT
• Description: Microcontroller
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F946-E/PT

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LCD, POR, PWM, WDT
• Number Of I /o: 53
• Program Memory Size: 14KB (8K x 14)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 336 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 64-TFQFP
• Processor Series: PIC16F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 352 B
• Interface Type: SSP, I2C, AUSART, SPI
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 53
• Number Of Timers: 3
• 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, MA160011
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 8 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: MA160011 - DAUGHTER BOARD PICDEM LCD 16F91X
• Lead Free Status / Rohs Status: Details

2.2.2.7
The PIR2 register contains the interrupt flag bits, as
shown in Register 2-7.
REGISTER 2-7:
© 2005 Microchip Technology Inc.
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
PIR2 Register
PIR2 – PERIPHERAL INTERRUPT REQUEST REGISTER 2 (ADDRESS: 0Dh)
OSFIF: Oscillator Fail Interrupt Flag bit
1 = System oscillator failed, clock input has changed to INTOSC (must be cleared in software)
0 = System clock operating
C2IF: Comparator 2 Interrupt Flag bit
1 = Comparator output (C2OUT bit) has changed (must be cleared in software)
0 = Comparator output (C2OUT bit) has not changed
C1IF: Comparator 1 Interrupt Flag bit
1 = Comparator output (C1OUT bit) has changed (must be cleared in software)
0 = Comparator output (C1OUT bit) has not changed
LCDIF: LCD Module Interrupt bit
1 = LCD has generated an interrupt
0 = LCD has not generated an interrupt
Unimplemented: Read as ‘0’
LVDIF: Low Voltage Detect Interrupt Flag bit
1 = LVD has generated an interrupt
0 = LVD has not generated an interrupt
Unimplemented: Read as ‘0’
CCP2IF: CCP2 Interrupt Flag bit (only available in PIC16F914/917)
Capture Mode:
Compare Mode:
PWM mode:
Legend:
R = Readable bit
- n = Value at POR
bit 7
OSFIF
R/W-0
1 = A TMR1 register capture occurred (must be cleared in software)
0 = No TMR1 register capture occurred
1 = A TMR1 register compare match occurred (must be cleared in software)
0 = No TMR1 register compare match occurred
Unused in this mode
R/W-0
C2IF
C1IF
R-0
Preliminary
W = Writable bit
‘1’ = Bit is set
LCDIF
R-0
Note:
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
U-0
Interrupt flag bits are set when an interrupt
condition occurs, regardless of the state of
its corresponding enable bit or the global
enable bit, GIE (INTCON<7>). User
software should ensure the appropriate
interrupt flag bits are clear prior to enabling
an interrupt.
—
R/W-0
LVDIF
PIC16F946
x = Bit is unknown
U-0
—
DS41265A-page 23
CCP2IF
R/W-0
bit 0