UPD168113 datasheet(21/50 Pages) NEC

21 / 50 page

Data Sheet S16423EJ2V0DS

µ PD168113

11.2.2 Pulse output function selection when EXT output

If D6 is set, the function which acts as the monitor of the output state of the driving pulse by the EXT pin can be

selected.

When D6 = 0,

EXT1: Output pulse synchronization mode of the micro step output 1

EXT2: Output pulse synchronization mode of the micro step output 2

When D6 = 1,

EXT1:

Mode with output time of micro step output 1 fixed to H

EXT2:

Mode with output time of micro step output 2 fixed to H

The output synchronization mode is duty 50% TYP. in accordance with the pulse frequency setting.

To count the number of pulses, count the rising edges.

11.2.3 Restrictions in pulse output synchronization mode

(1) Output is not guaranteed if the pulse period is 2

µs (Db to D0: 000000000001).

(2) Output is equivalent to the H time during steady-state driving (equivalent to pulse period setting) while an

acceleration/deceleration operation is performed.

(3) If the multiplication factor of the number of pulses is set to other than 1, the set number of pulses (address 5 x m)

is output.

11.2.4

Restrictions in mode in which output time is fixed to H

The output falls in synchronization with the falling of the pulse that is to be output at the same timing in the pulse

output synchronization mode.

When the last pulse is output , therefore, it rises earlier than the period of the pulse cycle (50% of pulse cycle or less)

UPD168113 Datasheet(PDF) 21 Page - NEC