HD6432670 Hitachi, HD6432670 Datasheet - Page 212

• Manufacturer Part Number: HD6432670
• Description: (HD64F267x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

6.5.4
When accessing external space, this LSI can extend the bus cycle by inserting one or more wait
states (T
insertion using the :$,7 pin.
Rev. 2.0, 04/02, page 166 of 906
Notes: 1. n = 0 to 7
Read
Write
2. When RDNn = 0
w
). There are two ways of inserting wait states: program wait insertion and pin wait
Wait Control
ø
Address bus
D15 to D8
D7 to D0
D15 to D8
D7 to D0
Figure 6.17 Bus Timing for 16-Bit, 3-State Access Space
T
1
(Word Access)
Bus cycle
T
2
Valid
Valid
T
3
Valid
Valid