UPD168113 datasheet(18/50 Pages) NEC

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Data Sheet S16423EJ2V0DS

µ PD168113

11. SERIAL COMMAND DETAILS

11.1 Address 0

Bit

Data

Note 4 Note 3 Note 2 Note 1

Wait setting

Notes 1. ch3, ch4 driving motor setting

3. ch6 serial/direct input mode selection

2. ch5 serial/direct input mode selection

4. ch7 serial/direct input mode selection

11.1.1 Wait value

When the stepping motor is to be controlled, counting is started from the falling of the LATCH signal and the motor is

excited when the count value reaches 0. Even if transmission of serial data is delayed by the wait value, the stepping

motor can be driven at a predetermined timing if the LATCH signal is periodically input.

Note that the wait value must not be set to 0. The wait time can be set in a range of 64 to 2048

µs with a resolution

of 32

µs using data.

11.1.2 Example of setting wait value

D5......D0

Set Value (

µs)

000000

Input prohibited

000001

000010

111101

1984

111110

2016

111111

2048

11.1.3 Definition by wait value

LATCH

Wait period

Wait 1

Wait 2

Driving mode

(microstep,

1-2 phase,

two-phase)

Driving mode

(when two-phase driving

immediately after reset)

Pulse output

Output disable

Output enable

EVR

(output current setting)

Fixed to

32 s

Set value:

−32 s

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