EDE1200 查看數據表（PDF） - Unspecified

零件编号

产品描述 (功能)

生产厂家

EDE1200

Unipolar Stepper Motor IC

Unspecified 

Motor Speed vs. Speed Selection Bits

1.2

1.18

1

0.8

0.6

0.4

0.2

0.152

0

0.077

0.172

0.089

0.2

0.103

0.4

0.303

0.244

0.121 0.154

0.2

0

1

2

3

4

5

Speed Select Input

0.606

0.606

0.303

6

7

RPS, Full

RPS, Half

STEP mode

In the 'STEP' mode, an external clock signal is required for each step of the motor. The RUN (pin

10) line must be left high. Each low-going pulse on the STEP (pin 9) line causes a movement of the

motor according to the Direction and Half-step pins as specified below:

Direction (pin 7): 1 = clockwise, 0 = counter-clockwise

(If a clockwise command causes counterclockwise rotation of motor, reverse the

sequence of the motor’s four phase wires.)

Half-Stepping (pin 8): 1 = normal stepping, 0 = half stepping (doubles step resolution)

With the EDE1200 running at an external clock speed of 4 MHz, the 'STEP' pin may be driven at

speeds up to 5 KHz, resulting in a motor speed over 1,500 RPM with a 1.8 º per step motor . All

stepper motors require ramped acceleration to such high RPM rates; do not instantly apply high

speed step requests immediately to a stopped motor. Motor type and load will determine maximum

acceleration rate. However, ordinary speed ranges (such as the EDE1200’s ‘RUN’ mode speeds) do

not require a ramped acceleration.

Free-Spin

Holding the free-spin input (pin 6) low causes the EDE1200 to de-activate all motor coils. During

ordinary operation (step and run modes) the motor is held in position by the ‘braking’ effect inherent

in all stepper motors. Activating this active-low input allows the motor spindle to spin freely without

the braking effect. Braking effect is resumed when free-spin input (pin 6) is raised.

COPYRIGHT © 1996 E-LAB Digital Engineering, Inc. All rights reserved. Page 3

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