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7733 Fiches technique(PDF) 336 Page - Renesas Technology Corp

No de pièce 7733
Description  16-BIT SINGLE-CHIP MICROCOMPUTER
PDF  940 Pages
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Fabricant  RENESAS [Renesas Technology Corp]
Site Internet  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

7733 Fiches technique(HTML) 336 Page - Renesas Technology Corp

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CONNECTING EXTERNAL DEVICES
7733 Group User’s Manual
12–11
Fig. 12.1.6 Operating waveform examples of signals which are input to or output from the
external (1)
q When external data bus is 16 bits wide (BYTE = “L” )
<16-bit data access>
A0 to A7
Address
A8/D8 to A15/D15
Data (odd)
BHE
E
A0
(a) Access starting from even address
ALE
A16/D0 to A23/D7
Data (even)
A0 to A7
A8/D8 to A15/D15
E
(b) Access starting from odd address
ALE
Address
Address
Address
Address
Address
Address
Data (odd)
<8-bit data access>
A0 to A7
A16/D0 to A23/D7
E
(d) Access to odd address
ALE
BHE
A0
A8/D8 to A15/D15
A0 to A7
A16/D0 to A23/D7
E
(c) Access to even address
ALE
BHE
A0
A8/D8 to A15/D15
BHE
A0
A16/D0 to A23/D7
Address
Address
Data (even)
Address
Address
Address
Address
Address
Address
Data (even)
Data (odd)
12.1 Signals required for accessing external devices



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