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7721 Datasheet(PDF) 422 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) 422 Page - Renesas Technology Corp

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APPLICATION
7721 Group User’s Manual
16–19
16.1 Memory connection
A
A
D
AC245
(tPHZ/tPLZ)
AC245
(tPZH/tPZL)
AC32(tPHL)
AC32(tPLH)
tw(EL) = 135 (min.)
tpzx(E-DLZ/DHZ) = 20 (min.)
E, OC (AC245)
A8/D8–A15/D15
A16/D0–A23/D7
RD
E, OC (AC245)
A8/D8–A15/D15
A16/D0–A23/D7
A
D
AC245
(tPHL/tPLH)
35 (max.)
D
AC245
(tPHZ/tPLZ)
AC32 ! 2(tPLH)
AC04(tPLH) + AC74(tPLH)
1
1
1Q (AC74)
2Q (AC74)
WO, WE
<When reading>
Data output A from
external memory (AC245)
<When writing>
(Unit : ns)
Write hold time
tw(EL) = 135(min.)
Data output B from
external memory (AC245)
Fig. 16.1.15 Timing chart for circuit example using bus buffers (2)



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