UPD4701AC データシートの表示（PDF） - NEC => Renesas Technology

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UPD4701AC

INCREMENTAL ENCODER COUNTER

NEC => Renesas Technology 

An example of a µPD4701A data read is shown in Fig. 5.

Fig. 5 Example of µPD4701A Data Read

Start

Count value latch

CS = 0

Count reset

RESET X = 1

RESET Y = 1

X counter low byte read

X/Y = 0

U/L = 0

X counter high byte

& switch status read

X/Y = 0

U/L = 1

Y counter low byte read

X/Y = 1

U/L = 0

Y counter high byte

& switch status read

X/Y = 1

U/L = 1

Data bus

high impedance

CS = 1

End

* CS must be kept at “0” during the read.

µPD4701A

7

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