UPD4702G Просмотр технического описания (PDF) - NEC => Renesas Technology

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UPD4702G

INCREMENTAL ENCODER 8-BIT UP/DOWN COUNTER CMOS INTEGRATED CIRCUITS

NEC => Renesas Technology 

µPD4702

(3) Carry & borrow outputs

If the counter performs an up-count operation when the count value is 0FFH, an active-low pulse is output to the

Carry output (the pulse width is 25 ns MIN. 120 ns MAX. irrespective of the A/B phase input cycle. Similarly, if the

counter performs a down-count operation when the count value is 00H, an active-low pulse is output to the Borrow

output.

A Borrow pulse is also output if a down-count operation is performed while RESET is “H” (during a reset), and

therefore, when a µPD4704 is added, a reset must be executed at the same time.

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