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H8SX1663 データシート(PDF) 357 Page - Renesas Technology Corp

部品番号 H8SX1663
部品情報  Renesas 32-Bit CISC Microcomputer H8SX Family / H8SX/1600 Series
PDF  1158 Pages
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メーカー  RENESAS [Renesas Technology Corp]
ホームページ  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

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Section 6 Bus Controller (BSC)
Rev.1.00 Jun. 07, 2006 Page 305 of 1102
REJ09B0294-0100
If an external bus release request, external access, and a refresh request occur simultaneously, the
order of priority is as follows:
Refresh > External bus release > External access by CPU, DTC, and DMAC
6.13.2
Pin States in External Bus Released State
Table 6.32 shows pin states in the external bus released state.
Table 6.32
Pin States in Bus Released State
Pins
Pin State
A23 to A0
High impedance
D15 to D0
High impedance
BS
High impedance
CSn (n = 7 to 0)
High impedance
AS
High impedance
AH
High impedance
RD/
WR
High impedance
LUCAS, LLCAS
High impedance
RD
High impedance
RAS
High impedance
CAS
High impedance
WE
High impedance
DQMLU, DQMLL
High impedance
CKE
High impedance
OE
High impedance
LUB, LLB
High impedance
LHWR, LLWR
High impedance
DACKn (n = 3 to 0)
High



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