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7733 Datasheet(PDF) 745 Page - Renesas Technology Corp

Part # 7733
Description  16-BIT SINGLE-CHIP MICROCOMPUTER
PDF  940 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

7733 Datasheet(HTML) 745 Page - Renesas Technology Corp

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APPLICATIONS
7735 Group User’s Manual
17–19
17.1.4 Memory expansion example
Figure 17.1.12 shows a memory expansion example (with one 128-Kbyte ROM and two 32-Kbyte SRAMs,
microprocessor mode). Figure 17.1.13 shows the corresponding timing diagram.
17.1 Memory expansion
BYTE
CNVSS
25 MHz
XIN
XOUT
M37735MHBXXXFP
Data bus
AC573
DQ
E
RD
D0 to D15
WO
M5M27C102K-15
D0 to D15
OE
A0 to A15
CE
A1 to A16
S
S
A0 to A14
A0 to A14
DQ1 to DQ8
DQ1 to DQ8
OE
W
OE
W
A1 to A15
A1 to A15
D0 to D7
M5M5256P-15
D8 to D15
WE
Address bus
A16
A0/D0 to
A7/D7
ALE
RDE
WEH
g
WEL
CS1
CS2
Data bus (even)
Data bus (odd)
000016
008016
087F16
800016
1FFFF1
4000016
4FFFF16
External ROM
area
(M5M27C102K-15)
SFR area
Internal RAM
area
External RAM
area
(M5M5256P-15 ! 2)
Memory map
Not used
Not used
A8/D8 to
A15/D15
AC573
DQ
E
g
2
Circuit conditions: Wait 0 is valid,
1 =
2
,
f(XIN)
8
,
f(XIN)
16
,
f(XIN)
f(XCIN)
g Make sure that the propagation delay time is 33 ns or less.
or
Fig. 17.1.12 ROM and SRAM expansion example



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