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7721 Datasheet(PDF) 423 Page - Renesas Technology Corp

Part # 7721
Description  16-BIT SINGLE-CHIP MICROCOMPUTER
PDF  577 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

7721 Datasheet(HTML) 423 Page - Renesas Technology Corp

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APPLICATION
7721 Group User’s Manual
16–20
16.1 Memory connection
16.1.3 Example of memory connection
Examples of the flash memory, SRAM, and DRAM connection and the timing charts are described as
follows.
(1)
Example of flash memory connection (minimum model)
M37721
A0–A15
BYTE
AC04
D0–D7
BHE
BLE
E
R/W
Address bus A0–A15
Data bus D0–D7
A0–A15
D0–D7
WE
CE
OE
M5M28F101AFP-10
000016
008016
048016
1FC016
200016
FFFF16
XIN
XOUT
25 MHz
Open
Open
V: Make sure that the propagation delay
time is within 25 ns.
V
SFR area
Internal RAM area
External ROM area
(M5M28F101AFP)
Memory map
SFR area
External ROM area
(M5M28F101AFP)
Circuit condition : Software Wait
Fig. 16.1.16 Example of flash memory connection (minimum model)



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