HD6432670 Hitachi, HD6432670 Datasheet - Page 214

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

6.5.5
The read strobe ( 5' ) timing can be changed for individual areas by setting bits RDN7 to RDN0 to
1 in RDNCR. Figure 6.19 shows an example of the timing when the read strobe timing is changed
in basic bus 3-state access space.
When the DMAC or EXDMAC is used in single address mode, note that if the 5' timing is
changed by setting RDNn to 1, the 5' timing will change relative to the rise of '$&. or
('$&. .
Rev. 2.0, 04/02, page 168 of 906
Read
Write
Notes: 1. Downward arrows indicate the timing of
Read Strobe (
2. When RDN = 0
Address bus
Data bus
Data bus
ø
,
Figure 6.18 Example of Wait State Insertion Timing
# #
) Timing
T
1
By program wait
T
2
T
w
Write data
pin sampling.
T
By
w
pin
T
w
Read data
T
3