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SH7672 Datasheet(PDF) 256 Page - Renesas Technology Corp

Part # SH7672
Description  32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7670 Series
PDF  1292 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

SH7672 Datasheet(HTML) 256 Page - Renesas Technology Corp

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Section 7
Bus State Controller (BSC)
Rev. 1.00 Nov. 14, 2007 Page 230 of 1262
REJ09B0437-0100
When the WM bit in CSnWCR is cleared to 0, the external wait input
WAIT signal is also
sampled.
WAIT pin sampling is shown in figure 7.10. A 2-cycle wait is specified as a software
wait. The
WAIT signal is sampled on the falling edge of CKIO at the transition from the T1 or Tw
cycle to the T2 cycle.
T1
CKIO
A25 to A0
CSn
RD/
WR
RD
D31 to D0
WEn
D31 to D0
WAIT
Tw
Tw
Twx
T2
Read
Write
BS
Wait states inserted
by
WAIT signal
DACKn*
Note: * The waveform for DACKn is when active low is specified.
Figure 7.10
Wait Cycle Timing for Normal Space Access
(Wait Cycle Insertion Using
WAIT Signal)



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