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7733 Scheda tecnica(PDF) 424 Page - Renesas Technology Corp

Il numero della parte 7733
Spiegazioni elettronici  16-BIT SINGLE-CHIP MICROCOMPUTER
PDF  940 Pages
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Produttore elettronici  RENESAS [Renesas Technology Corp]
Homepage  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

7733 Scheda tecnica(HTML) 424 Page - Renesas Technology Corp

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APPLICATIONS
7733 Group User’s Manual
17–17
Fig. 17.1.11 Bus buffer usage example (2) (when a memory which requires a long data hold time for writing
is connected)
17.1 Memory expansion
g1 Make sure that the propagation delay time is 40.5 ns or less.
g2 Make sure that the output enable time is 5 ns or more and the output disable time is
42.5 ns or less.
Circuit conditions: Wait 1 is valid,
1
=
2
,
f(XIN)
8
,
f(XIN)
16
,
f(XIN)
2
f(XCIN)
or
ALS245A
BYTE
E
16 MHz
Data bus (even)
Data bus (odd)
LE
DQ
OE
AC573
OC
DIR
AB
LE
DQ
OE
AC573
ALE
A1 to A7
Address bus
DIR
AB
A0
R/W
BHE
AC32
AC04
RD
WE
WO
1D1Q
1T
2D
2Q
2T
1
AC74
AC32
AC04
XIN
XOUT
ALS245A
A8/D8 to
A15/D15
M37733MHBXXXFP
A16/D0 to
A23/D7
g1
g2
CNVSS
g2
OC
1
These circuits make the rising edge of
the write signal earlier by 1/2
1
, so
that the write hold time is extended.



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