BU2506FV,BU2505FV

Technical Note

3/8

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2009.06 - Rev.A

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Cascade Connection

A cascade connection data output terminal (DO) is available for reducing the design load when the number of channels is increased.

The DO terminal can be connected directly to the data input terminal (DI) of the next stage. Its effectiveness increases as

the number of channels increases.The data transition timing is as shown below.

In a cascade connection, in order to have sufficient data change and clock edge time margins, make the clock line the shortest.

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Block Diagrams

BU2505FV

BU2506FV

CLK

LD

DI

DO

Data of #1

Data of #2

CLK

LD

DI

DO

BU2505FV

(* 2)

CLK

LD

DI

DO

BU2505FV

(* 1)

CPU

CLK

LD

DI