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SH7708 数据表(PDF) 261 Page - Renesas Technology Corp

部件名 SH7708
功能描述  SuperH??RISC engine
PDF  633 Pages
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制造商  RENESAS [Renesas Technology Corp]
网页  http://www.renesas.com
标志 RENESAS - Renesas Technology Corp

SH7708 数据表(HTML) 261 Page - Renesas Technology Corp

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Basic Timing: Figure 10.15 shows the basic timing for DRAM access is 3 cycles. Tpc is the
precharge cycle, Tr the
RAS assert cycle, Tc1 the CAS assert cycle, and Tc2 the read data latch
cycle.
CKIO
RD/
WR
D31 to D0
(read)
D31 to D0
(write)
RAS
CASxx
BS
CS2 or CS3
A25 to A16
A15 to A0
Tr
Tc1
Tc2
(Tpc)
Figure 10.15 Basic Timing for DRAM Access



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