HD6432621 Hitachi, HD6432621 Datasheet - Page 131

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HD6432621

Manufacturer Part Number
HD6432621
Description
(HD64F262x Series) 16-Bit Microcomputer
Manufacturer
Hitachi
Datasheet
RES
Address bus
RD
HWR, LWR
D15 to D0
(1) (3) Reset exception handling vector address (when reset, (1) = H'000000, (3) = H'000002)
(2) (4) Start address (contents of reset exception handling vector address)
(5) Start address ((5) = (2) (4))
(6) First program instruction
Note: * Three program wait states are inserted.
ø
Figure 4-2 Reset Sequence (Modes 4 and 5)
*
(1)
Vector fetch
(2)
High
*
(3)
Internal
processing
(4)
Prefetch of first
program instruction
(5)
*
(6)
87

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