PIC18F6621-I/PT Microchip Technology Inc., PIC18F6621-I/PT Datasheet - Page 94

• Manufacturer Part Number: PIC18F6621-I/PT
• Description: 64 PIN, 64 KB FLASH, 3840 RAM, 52 I/O
• Manufacturer: Microchip Technology Inc.

Specifications of PIC18F6621-I/PT

• A/d Inputs: 12-Channel, 10-Bit
• Comparators: 2
• Cpu Speed: 10 MIPS
• Eeprom Memory: 1024 Bytes
• Input Output: 54
• Interface: I2C/SPI/UART/USART
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 64-pin TQFP
• Programmable Memory: 64K Bytes
• Ram Size: 3.8K Bytes
• Speed: 40 MHz
• Timers: 2-8-bit, 3-16-bit
• Voltage, Range: 2-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

PIC18F6525/6621/8525/8621
9.2
The PIR registers contain the individual flag bits for the
peripheral interrupts. Due to the number of peripheral
interrupt sources, there are three Peripheral Interrupt
Request Flag registers (PIR1, PIR2 and PIR3).
REGISTER 9-4:
DS39612B-page 92
PIR Registers
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
PIR1: PERIPHERAL INTERRUPT REQUEST (FLAG) REGISTER 1
PSPIF: Parallel Slave Port Read/Write Interrupt Flag bit
1 = A read or a write operation has taken place (must be cleared in software)
0 = No read or write has occurred
ADIF: A/D Converter Interrupt Flag bit
1 = An A/D conversion completed (must be cleared in software)
0 = The A/D conversion is not complete
RC1IF: USART1 Receive Interrupt Flag bit
1 = The USART1 receive buffer, RCREGx, is full (cleared when RCREGx is read)
0 = The USART1 receive buffer is empty
TX1IF: USART1 Transmit Interrupt Flag bit
1 = The USART1 transmit buffer, TXREGx, is empty (cleared when TXREGx is written)
0 = The USART1 transmit buffer is full
SSPIF: Master Synchronous Serial Port Interrupt Flag bit
1 = The transmission/reception is complete (must be cleared in software)
0 = Waiting to transmit/receive
CCP1IF: ECCP1 Interrupt Flag bit
Capture mode:
1 = A TMR1 register capture occurred (must be cleared in software)
0 = No TMR1 register capture occurred
Compare mode:
1 = A TMR1 register compare match occurred (must be cleared in software)
0 = No TMR1 register compare match occurred
PWM mode:
Unused in this mode.
TMR2IF: TMR2 to PR2 Match Interrupt Flag bit
1 = TMR2 to PR2 match occurred (must be cleared in software)
0 = No TMR2 to PR2 match occurred
TMR1IF: TMR1 Overflow Interrupt Flag bit
1 = TMR1 register overflowed (must be cleared in software)
0 = TMR1 register did not overflow
bit 7
Legend:
R = Readable bit
-n = Value at POR
PSPIF
R/W-0
Note 1: Enabled only in Microcontroller mode for PIC18F8525/8621 devices.
(1)
R/W-0
ADIF
RC1IF
R-0
W = Writable bit
‘1’ = Bit is set
TX1IF
R-0
Note 1: Interrupt flag bits are set when an interrupt
2: User software should ensure the appropri-
SSPIF
R/W-0
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
condition occurs, regardless of the state of
its corresponding enable bit or the Global
Interrupt Enable bit, GIE (INTCON<7>).
ate interrupt flag bits are cleared prior to
enabling an interrupt and after servicing
that interrupt.
(1)
CCP1IF
R/W-0
 2005 Microchip Technology Inc.
TMR2IF
R/W-0
x = Bit is unknown
TMR1IF
R/W-0
bit 0