HD6433044 Hitachi Semiconductor, HD6433044 Datasheet - Page 708

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

ø
A
AS
CS
RD (read)
D
(read)
HWR, LWR
(write)
D
(write)
RFSH
ø
A
AS
CS
LWR, RD
RFSH
23
15
15
23
3
to A
to D
to D
3
to A
, HWR,
0
0
0
0
Figure 21-17 PSRAM Bus Timing (Refresh Cycle): Three-State Access
Figure 21-16 PSRAM Bus Timing (Read/Write): Three-State Access
t
AD
t
AS1
T
T
1
1
t
RAD1
t
WDS2
t
t
t
RSD
WSD
RAD2
T
T
2
2
700
t
RDS
T
T
3
3
t
t
t
RAD3
t
SD
RAD3
SD
t
RDH
t
RP