HD6412332 RENESAS [Renesas Technology Corp], HD6412332 Datasheet - Page 204

• Manufacturer Part Number: HD6412332
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

6.5.9
When DRAM with a ×16-bit configuration is connected, the 2-CAS access method is used for the
control signals needed for byte access.
Figure 6.18 shows the control timing for 2-CAS access, and figure 6.19 shows an example of 2-
CAS DRAM connection.
Rev.4.00 Sep. 07, 2007 Page 174 of 1210
REJ09B0245-0400
Byte control
Note: n = 2 to 5
Byte Access Control
Figure 6.18 2-CAS Control Timing (Upper Byte Write Access)
A
CS
CAS
LCAS
HWR (WE)
φ
23
n
to A
(RAS)
0
T
p
Row
T
r
T
c1
Column
T
c2