h8s-2172 Renesas Electronics Corporation., h8s-2172 Datasheet - Page 163
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h8s-2172
Manufacturer Part Number
h8s-2172
Description
Renesas 16-bit Single-chip Microcomputer H8s Family H8s-2100 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2172.pdf
(570 pages)
- Current page: 163 of 570
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6.6.10
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 6.29 shows the control timing for 2-CAS access, and
figure 6.30 shows an example of 2-CAS DRAM connection.
Figure 6.29 2-CAS Control Timing (Write Access to Even Address: RAST = 0, CAST = 0)
Byte Access Control
φ
Address bus
D15 to D8
D7 to D0
(
(
(
)
)
)
T
p
Row address
High
High
T
r
T
c1
Column address
Rev. 2.00, 03/04, page 131 of 534
T
c2
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