Interrupts; Table 2.5.1 Interrupt Sources, Vector Addresses And Priority - Renesas 7200 Series User Manual

FUNCTIONAL DESCRIPTION

2.5 Interrupts

2.5 Interrupts
Interrupts are used in the following cases.
When there is a request to execute a higher priority routine than current processing routine.
When it is necessary to process according to a certain timing.
The M37221M6-XXXSP/FP has 14 interrupt sources (including reset).
These are vector interrupts with a fixed priority sequence. Table 2.5.1 shows the interrupt sources, vector
addresses and the interrupt priority sequence.
M37220M3-XXXSP/FP
Refer to "CHAPTER 4. M37220M3-XXXSP/FP."

Table 2.5.1 Interrupt sources, vector addresses and priority

Priority Interrupt sources
1
Reset (Note)
2
CRT interrupt
3
INT2 interrupt
4
INT1 interrupt
5
Timer 4 interrupt
6
f(X )/4096 interrupt
IN
7
V interrupt
SYNC
8
Timer 3 interrupt
9
Timer 2 interrupt
10
Timer 1 interrupt
11
Serial I/O interrupt
12
2
Multi-master I C-BUS interface interrupt
13
INT3 interrupt
14
BRK instruction interrupt
Note: Reset are included in the table because it operates in the same way as interrupts.
These 14-source, 14-vector interrupts have the priority sequence as shown in Table 2.5.1 (reset has a
higher priority than interrupts).
When two or more interrupt requests occur at the same sampling point, the interrupt with the higher priority
(in order of 1 to 14) is received. This priority sequence is determined by hardware, but priority processing
is possible to be varied by software, by using the interrupt enable bit and the interrupt disable flag.
2-26
Vector addresses
High-order byte Low-order byte
FFFF FFFE
16
FFFD FFFC
16
FFFB FFFA
16
FFF9 FFF8
16
FFF5 FFF4
16
FFF3 FFF2
16
FFF1 FFF0
16
FFEF FFEE
16
FFED FFEC
16
FFEB FFEA
16
FFE9 FFE8
16
FFE7 FFE6
16
FFE5 FFE4
16
FFDF FFDE
16
7220 Group User's Manual
Remarks
Non-maskable
16
16
Active edge selectable
16
Active edge selectable
16
16
16
Active edge selectable
16
16
16
16
16
16
Active edge selectable
16
Non-maskable (software interrupt)
16