Section 5 Exception Handling
Rev. 3.00 Sep. 27, 2007 Page 79 of 758
REJ09B0243-0300
5.4 Interrupts
5.4.1 Interrupt
Sources
Table 5.7 shows the sources that start the interrupt exception handling. They are NMI, user break,
IRQ, and on-chip peripheral modules.
Table 5.7
Interrupt Sources
Type Request
Source
Number of
Sources
NMI
NMI pin (external input)
1
User break
User break controller (UBC)
1
IRQ
IRQ0 to IRQ3 pins (external input)
4 (SH7125)
3 (SH7124)
On-chip peripheral module
Multi-function timer pulse unit 2 (MTU2)
28
Watchdog
timer
(WDT)
1
A/D converter (A/D_0 and A/D_1)
2
Compare match timer (CMT_0 and CMT_1)
2
Serial communication interface (SCI_0, SCI_1,
and SCI_2)
12
Port output enable (POE)
2
All interrupt sources are given different vector numbers and vector table address offsets. For
details on vector numbers and vector table address offsets, see table 6.3 in section 6, Interrupt
Controller (INTC).
Содержание SH7124 R5F7124
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