bd63847 ROHM Co. Ltd., bd63847 Datasheet - Page 13

• Manufacturer Part Number: bd63847
• Description: Micro Step 36v Stepper Motor Drivers
• Manufacturer: ROHM Co. Ltd.

・ENABLE Switch timing chart (FULL STEP, MODE0=L, MODE1=L)
・Changing step modes
・Changing both CW_CCW and step modes(MODE0, MODE1)
© 2010 ROHM Co., Ltd. All rights reserved.
BD63847/63843EFV
www.rohm.com
IOUT(CH1)
IOUT(CH2)
ENABLE
The switch of the ENABLE signal is reflected by the change in the ENABLE signal with regardless of other input signals.
During ENABLE=L, the motor output becomes OPEN and the electrical angle doesn't advance. Because the translator
circuit stop and CLK input is canceled. It returns at ENABLE=L to H in the same state as the state before ENABLE=L is
input. But the change of step modes is reflected during ENABLE=L. Therefore, if step mode is changed during
ENABLE=L, it returns at ENABLE=L to H in the different state (changed state) from the state before ENABLE=L is input.
The switch of the step mode signals are reflected by the change in the MODE0, MODE1 signal with regardless of other
input signals. This series can prevent the motor miss step(due to the inconsistency of motor electrical angle between step
modes) happened at changing step modes.
Section A: no restriction of control sequence
Section B: Please change only either CW_CCW or step modes (MODE0, MODE1).
OUT1A
OUT1B
OUT2A
OUT2B
CLK
PS
CLK
PS
It returns in the same state as the state before ENABLE=L is input.
Section A
①
②
13/19
Output off & Translator stop
Section B
②
③
Technical Note
2010.4 - Rev.A