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7733 bảng dữ liệu(PDF) 704 Page - Renesas Technology Corp

tên linh kiện 7733
Giải thích chi tiết về linh kiện  16-BIT SINGLE-CHIP MICROCOMPUTER
PDF  940 Pages
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nhà sản xuất  RENESAS [Renesas Technology Corp]
Trang chủ  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

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CONNECTING EXTERNAL DEVICES
7735 Group User’s Manual
12–28
External data bus
Data length
External data bus width
Software wait
8
16
8, 16
16
(When accessed starting from even address)
Wait 0
In use
q State when “L” level is input to pin HOLD
ALE
HLDA
HOLD
Address A
Address B
1
! 1
1
! 1
Hold state
Data
Sampling timing
<<When “L” level is input to pin HOLD while bus is in use (3)>>
External address bus/
External data bus
External address bus
Clock
1
Address A
Floating
Floating
Floating
BHE
Œ
g
CS0 to CS4
Bus is in use.
Bus is in use.
Bus is not in use.
Œ When “L” level which is input to pin HOLD is accepted, the address which was output
immediately before is output again, instead of a new address.
g RDE, WEL, WEH
Fig. 12.4.5 Timing when hold state is accepted and terminated (4)
12.4 Hold function



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