参数资料
| 型号： | KSZ8864RMNI |
| 厂商： | Micrel Inc |
| 文件页数： | 32/111页 |
| 文件大小： | 0K |
| 描述： | IC ETHERNET SWITCH 4PORT 64QFN |
| 特色产品： | KSZ8864RMN Ethernet Switches |
| 标准包装： | 348 |
| 系列： | * |
| 其它名称： | 576-3995 |
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1997 Microchip Technology Inc.
DS30444E - page 27
PIC16C9XX
4.2.2.5
PIR1 REGISTER
This register contains the individual ag bits for the
peripheral 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 soft-
ware should ensure the appropriate inter-
rupt ag bits are clear prior to enabling an
interrupt.
FIGURE 4-7:
PIR1 REGISTER (ADDRESS 0Ch)
R/W-0
U-0
R/W-0
LCDIF
ADIF(1)
—
SSPIF
CCP1IF
TMR2IF
TMR1IF
R
= Readable bit
W = Writable bit
U
= Unimplemented bit,
read as ‘0’
- n = Value at POR reset
bit7
bit0
bit 7:
LCDIF: LCD Interrupt Flag bit
1 = LCD interrupt occurred (must be cleared in software)
0 = LCD interrupt did not occur
bit 6:
ADIF: A/D Converter Interrupt Flag bit(1)
1 = An A/D conversion completed (must be cleared in software)
0 = The A/D conversion is not complete
bit 5-4: Unimplemented: Read as '0'
bit 3:
SSPIF: Synchronous Serial Port Interrupt Flag bit
1 = The transmission/reception is complete (must be cleared in software)
0 = Waiting to transmit/receive
bit 2:
CCP1IF: CCP1 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
bit 1:
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
bit 0:
TMR1IF: TMR1 Overow Interrupt Flag bit
1 = TMR1 register overowed (must be cleared in software)
0 = TMR1 register did not overow
Note 1: Bit ADIF is reserved on the PIC16C923, always maintain this bit clear.
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.
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