HD6433044 Hitachi Semiconductor, HD6433044 Datasheet - Page 159

• Manufacturer Part Number: HD6433044
• Description: (HD64 Series) Hitachi Single-Chip Microcomputer
• Manufacturer: Hitachi Semiconductor

DDR Write Timing: Data written to a data direction register (DDR) to change a CS
CS
cycle. Figure 6-21 shows the timing when the CS
output.
BRCR Write Timing: Data written to switch between A
or output takes effect starting from the T
timing when a pin is changed from generic input to A
n
output to generic input, or vice versa, takes effect starting from the T
ø
Address
bus
CS
ø
Address
bus
A
23
1
to A
21
High impedance
Figure 6-22 BRCR Write Timing
Figure 6-21 DDR Write Timing
3
T
T
High impedance
1
1
state of the BRCR write cycle. Figure 6-22 shows the
145
1
P8DDR address
pin is changed from generic input to CS
BRCR address
23
, A
T
T
2
23
2
22
, A
, or A
22
, or A
21
output.
21
T
T
3
3
output and generic input
3
state of the DDR write
n
pin from
1