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H8SX1663 Scheda tecnica(PDF) 274 Page - Renesas Technology Corp

Il numero della parte H8SX1663
Spiegazioni elettronici  Renesas 32-Bit CISC Microcomputer H8SX Family / H8SX/1600 Series
PDF  1158 Pages
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Produttore elettronici  RENESAS [Renesas Technology Corp]
Homepage  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

H8SX1663 Scheda tecnica(HTML) 274 Page - Renesas Technology Corp

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Section 6 Bus Controller (BSC)
Rev.1.00 Jun. 07, 2006 Page 222 of 1102
REJ09B0294-0100
6.9.6
Address Cycle Control
An extension cycle (Tmaw) can be inserted between Tma1 and Tma2 cycles to extend the
AH
signal output period by setting the ADDEX bit in MPXCR. By inserting the Tmaw cycle, the
address setup for
AH and the AH minimum pulse width can be assured.
Figure 6.33 shows the access timing when the address cycle is three cycles.
T
ma1
T
maw
T
ma2
T
2
T
1
B
φ
Address bus
D15 to D0
D15 to D0
Address cycle
Data cycle
CSn
LHWR
LLWR
AH
RD
DACK
BS
RD/
WR
Note: n = 3 to 7
Address
Read data
Address
Write data
Read
Write
Figure 6.33 Access Timing of 3 Address Cycles (ADDEX = 1)



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