H8S-2350 RENESAS [Renesas Technology Corp], H8S-2350 Datasheet - Page 114
H8S-2350
Manufacturer Part Number
H8S-2350
Description
16-Bit Single-Chip Microcomputer
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.H8S-2350.pdf
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Section 4 Exception Handling
4.1.2
Exceptions originate from various sources. Trap instructions and interrupts are handled as follows:
1. The program counter (PC), condition code register (CCR), and extended register (EXR) are
2. The interrupt mask bits are updated. The T bit is cleared to 0.
3. A vector address corresponding to the exception source is generated, and program execution
For a reset exception, steps 2 and 3 above are carried out.
4.1.3
The exception sources are classified as shown in figure 4.1. Different vector addresses are
assigned to different exception sources.
Table 4.2 lists the exception sources and their vector addresses.
In modes 6 and 7 in the H8S/2351, the on-chip ROM available for use after a power-on reset is the
64-kbyte area comprising addresses H'000000 to H'00FFFF. Care is required when setting vector
addresses.
Rev. 3.00 Sep 15, 2006 page 80 of 988
REJ09B0330-0300
pushed onto the stack.
starts from that address.
Exception Handling Operation
Exception Vector Table
Exception
sources
Reset
Trace
Interrupts
Trap instruction
Figure 4.1 Exception Sources
Power-on reset
Manual reset
External interrupts: NMI, IRQ7 to IRQ0
Internal interrupts: 42 interrupt sources in
on-chip supporting modules
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