参数资料
型号: PIC16C662T-04E/TQ
元件分类: 微控制器/微处理器
英文描述: 8-BIT, OTPROM, 4 MHz, RISC MICROCONTROLLER, PQFP44
封装: 10 X 10 MM, 1 MM HEIGHT, PLASTIC, TQFP-44
文件页数: 55/136页
文件大小: 634K
代理商: PIC16C662T-04E/TQ
1996 Microchip Technology Inc.
Preliminary
DS30559A-page 25
PIC16C64X & PIC16C66X
4.2.2.5
PIR1 REGISTER
This register contains the individual ag bits for the
comparator and Parallel Slave Port interrupts.
Note:
Interrupt ag bits get 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 ag bits are clear prior to enabling
an interrupt.
FIGURE 4-9:
PIR1 REGISTER (ADDRESS 0Ch)
R/W-0
U-0
PSPIF(1)
CMIF
R= Readable bit
W= Writable bit
U= Unimplemented bit,
read as ‘0’
- n= Value at POR reset
bit7
bit0
bit 7:
PSPIF(1): Parallel Slave Port Interrupt Flag bit
1 = A read or write operation has taken place (must be cleared in software)
0 = No read or write operation has taken place
bit 6:
CMIF: Comparator Interrupt Flag bit
1 = Comparator input has changed (must be cleared in software)
0 = Comparator input has not changed
bit 5-0: Unimplemented: Read as '0'
Note 1: Bit PSPIF is reserved on the PIC16C641/642, always maintain this bit clear.
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