HD6432621 Hitachi, HD6432621 Datasheet - Page 851

• Manufacturer Part Number: HD6432621
• Description: (HD64F262x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

Figure A-1 shows timing waveforms for the address bus and the RD, HWR, and LWR signals
during execution of the above instruction with an 8-bit bus, using three-state access with no wait
states.
ø
Address bus
RD
HWR, LWR
Figure A-1 Address Bus, RD, HWR, and LWR Timing
of instruction
Fetching
3rd byte
(8-Bit Bus, Three-State Access, No Wait States)
R:W 2nd
of instruction
Fetching
4th byte
High level
operation
Internal
jump address
instruction at
1nd byte of
Fetching
R:W EA
jump address
instruction at
2nd byte of
Fetching
807