Cmsemicon SC8F577 Series - Page 65

V1.8
SC8F577x
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Peripherals interrupt request registerPIR2 (107H)
107H
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
PIR2
---
TKIF
COMPIF
IICIF
BCLIF
RCCIF
RACIF
LVDIF
R/W
---
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reset value
---
0
0
0
0
0
0
0
Bit7
Not used.
Bit6
TKIF:
Touch button detection over interrupt flag bit
1=
Touch button detection over interrupt happens (must clear through software)；
0=
Touch button detection over interrupt not happen.
Bit5
COMPIF:
COMP interrupt flag bit
1=
The COMP interrupt happens (must clear through software);
0=
The COMP interrupt not happen.
Bit4
IICIF:
IIC interrupt flag bit
1=
The IIC interrupt condition is met. Before returning from the interrupt service
program, it must clear through software. The conditions for making this bit 1 are:：
- I
2
C slave/master control；
- transmit/receive happens；
- I
2
C master control；
- The start condition that occurs is done by IIC mod；
- The stop condition that occurs is completed by IIC mod；
- The restart condition that occurs is done by IIC mod；
- The respond condition that occurs is done by IIC mod；
- The start condition occurs when the IIC mod is idle (multi-host system);
- The stop condition occurs when the IIC mod is idle (multi-host system);.
0=
No IIC interrupt condition is met.
Bit3
BCLIF:
bus conflict interrupt flag bit;
1=
When configured as I
2
Cmaster control mode, bus conflict happens in IIC;
0=
No bus conflict.
Bit2
RCCIF:
1=
0=
PORTC level change interrupt flag bit
PORTC level change interrupt happen (must clear through software);
PORTC level change interrupt not happen.
Bit1
RACIF:
1=
0=
PORTA level change interrupt flag bit
PORTA level change interrupt happen (must clear through software);
PORTA level change interrupt not happen.
Bit0
LVDIF
LVD interrupt flag bit；
1=
Supply voltage lower than setting voltage by LVD (must clear through software)；
0=
Supply voltage higher than setting voltage by LVD .