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H8/3003 数据表(PDF) 559 Page - Renesas Technology Corp

部件名 H8/3003
功能描述  microcontroller (MCU)
PDF  715 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  RENESAS [Renesas Technology Corp]
网页  http://www.renesas.com
标志 RENESAS - Renesas Technology Corp

H8/3003 数据表(HTML) 559 Page - Renesas Technology Corp

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18.3.2 Refresh Controller Bus Timing
Refresh controller bus timing is shown as follows:
•
DRAM bus timing
Figures 18-7 to 18-12 show the DRAM bus timing in each operating mode.
•
PSRAM bus timing
Figures 18-13 and 18-14 show the pseudo-static RAM bus timing in each operating mode.
Figure 18-7 DRAM Bus Timing (Read/Write): Three-State Access
— 2
WE Mode —
ø
A9 to A1
AS
CS3 (RAS)
RD (CAS)
HWR (UW),
LWR (LW),
(read)
HWR (UW),
LWR (LW),
(write)
RFSH
D15 to D0
(read)
D15 to D0
(write)
T1
T2
T3
tAD
tAD
tRAH
tRAD1
tAS1
tASD
tAS1
tRAC
tASD
tAA
tCAC
tRAD3
tRP
tSD
tCRP
tSD
tWDH
tRDS
tRDH*
tWDS3
tCAS
541
Note: * Stipulation from earliest
CS3 and RD negate timing.



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