7220 Datasheet, PDF (60/303 Pages) Renesas Technology Corp – 8-BIT SINGLE-CHIP MICROCOMPUTER

FUNCTIONAL DESCRIPTION
2.5 Interrupts
Interrupt request bits are set to “1” by occurrence of an interrupt request, even if the interrupt is disabled.
Therefore, to disable interrupt processing, clear the interrupt request bit to “0” immediately before the
interrupt disable state is cancelled (interrupt enable state, i.e., the interrupt enable bit = “1” and the interrupt
disable flag = “0”).
Reset
CRT interrupt
INT2 interrupt
INT1 interrupt
Timer 4 interrupt
f(XIN)/4096 interrupt
VSYNC interrupt
Timer 3 interrupt
Timer 2 interrupt
Timer 1 interrupt
Serial I/O interrupt
Multi-master I²C-BUS interface interrupt
INT3 interrupt
RESET
CRTR ^CRTE
IT2R ^IT2E
IT1R ^IT1E
TM4R ^TM4E
MSR ^MSE
VSCR ^VSCE
TM3R ^TM3E
TM2R ^TM2E
TM1R ^TM1E
S1R
S1E
IICR ^IICE
IT3R ^IT3E
FFFF16, FFFE16
FFFD16, FFFC16
FFFB16, FFFA16
FFF916, FFF816
FFF516, FFF416
FFF316, FFF216
FFF116, FFF016
FFEF16, FFEE16
FFED16, FFEC16
FFEB16, FFEA16
FFE916, FFE816
FFE716, FFE616
FFE516, FFE416
BRK instruction interrupt
BRK
Interrupt Interrupt
request bit enable bit
Note:
indicates to operate together.
FFDF16, FFDE16
Interrupt
disable flag (I)
Interrupt
vector
Fig. 2.5.9 Interrupt control system
FFDE16
FFDF16
FFE016
Internal ROM area
BRK instruction interrupt
L
H
Internal ROM area
FFE416
FFE516
FFE616
FFE716
FFE816
FFE916
FFEA16
FFEB16
FFEC16
FFED16
INT3 interrupt
L
H
Multi-master I² C-BUS L
interface interrupt _H
Serial I/O interrupt
L
H
Timer 1 interrupt
L
H
Timer 2 interrupt
L
H
FFEE16
FFEF16
FFF016
FFF116
FFF216
FFF316
FFF416
FFF516
FFF616
FFF716
FFF816
FFF916
FFFA16
FFFB16
FFFC16
FFFD16
FFFE16
FFFF16
Timer 3 interrupt
L
H
VSYNC interrupt
L
H
f(XIN)/4096 interrupt
L
H
Timer 4 interrupt
L
H
Internal ROM area
INT1 interrupt
L
H
INT2 interrupt
L
H
CRT interrupt
L
H
Reset
L
H
Interrupt Vector Table
The low-order 8 bits and the high-order 8 bits of jump destination address
when an interrupt occurs, are stored to addresses “L” and “H” respectively.
Fig. 2.5.10 Interrupt vector table
7220 Group User’s Manual
2-33