Chapter 3
Microcomputer Basics 1
III
−
38
8-bit timer operation
■
Register description
Group 4 Interrupt Control Register (G4ICR: 0x00008910)
Timer 1 Base Register (TM1BR: 0x0000A149)
bp
Flag name
Description
15
14-12
G4LV2
G4LV1
G4LV0
Group 4 interrupt priority level
Set a level from 6 to 0.
11-10
9
G4IE1
Timer 1 underflow interrupt enable flag
0: Disabled
1: Enabled
8
G4IE0
Timer 0 underflow interrupt enable flag
0: Disabled
1: Enabled
7-6
5
G4IR1
Timer 1 underflow interrupt request flag
0: No interrupt request
1: Interrupt request
4
G4IR0
Timer 0 underflow interrupt request flag
0: No interrupt request
1: Interrupt request
3-2
1
G4ID1
Timer 1 underflow interrupt detection flag
0: No interrupt detected
1: Interrupt detected
0
G4ID0
Timer 0 underflow interrupt detection flag
0: No interrupt detected
1: Interrupt detected
bp
Flag name
Description
7
6
5
4
3
2
1
0
TM1BR7
TM1BR6
TM1BR5
TM1BR4
TM1BR3
TM1BR2
TM1BR1
TM1BR0
Timer 1 Base Register
