Datasheet

Table Of Contents
Section 4 Exception Handling
REJ09B0140-0900 Rev. 9.00 Page 77 of 846
Sep 16, 2010
H8S/2215 Group
Figures 4.1 and 4.2 show examples of the reset sequence.
(1) (3)
(2) (4)
(5)
(6)
Note: * Three program wait states are inserted.
Reset exception handling vector address (for power-on reset, (1) = H'000000,
(3) = H'000002; for manual reset, (1) = H'000004, (3) = H'000006)
Start address (contents of reset exception handling vector address)
Start address ((5) = (2) (4))
First program instruction
φ
RES, MRES
Address bus
RD
HWR, LWR
D15 to D0
(1)
(3)
High
(2) (4)
(5)
(6)
* * *
Vector fetch
Internal
processing
Prefetch of first
program instruction
Figure 4.1 Reset Sequence (Mode 4)