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TSZ02201-0P2P0C702000-1-2

© 2017 ROHM Co., Ltd. All rights reserved.

2

2.Mar.2018 Rev.001

www.rohm.com

TSZ22111

• 15 • 001

BD60223FP

Function Explanation

CLK/Clock input Pin for advancing the electrical angle

CLK is working on rising edge. The Electrical angle advances by one for each CLK input.

Motor’s misstep will occur if noise gets mixed with the CLK pin, so design the pattern there is no noise plunging.

MODE0, MODE1/Motor Excitation Mode Setting Pin

Set the motor excitation mode

MODE0

MODE1

Excitation Mode

L

L

FULL STEP

H

L

HALF STEP

L

H

QUARTER STEP

H

H

1/16 STEP

Refer to the P.14 for the timing chart and motor torque vector of various excitation modes.

Unrelated to CLK, change of setting is forcibly reflected. (refer to P.16).

CW_CCW Pin/Motor rotating direction setting

Set the motor’s rotating direction. Change of setting is reflected by the CLK rising edge immediately after that. (refer to P.15)

CW_CCW

Rotating Direction

L

Clockwise (CH2’s current is outputted with a phase lag of 90°on the basis of CH1’s current)

H

Counter

Clockwise(CH2’s current is outputted with a phase lead of 90°on the basis of CH1’s

current)

ENABLE Pin/Output enable Pin

Turn off forcibly all the output transistors (motor output is open).

When ENABLE=L, input to CLK is blocked, and phase advance operation of internal translator circuit is stopped.

However, when the excitation mode (MODE 0, MODE 1) is switched in the ENABLE = L periode, The switched mode is valid

in the excitation mode when the ENABLE Pin returns from Low to High.

(refer to P.16)

ENABLE

Motor Output

L

OPEN (electrical angle maintained)

H

ACTIVE

PS/Power save Pin

PS can make circuit standby state and motor output OPEN. In standby state, translator circuit is reset (initialized) and electrical

angle is initialized.

Be careful because there is a delay of 40µs(Max), as PS=

L→H, until it is returned from standby state to normal state and the

motor output becomes ACTIVE (refer to P.13).

PS

Status

L

Standby State(RESET)

H

ACTIVE

The electrical angle (initial electrical angle) of each excitation mode immediately after RESET is as follows.

(refer to P.14)

Excitation Mode

Initial Electrical Angle

FULL STEP

45°

HALFSTEP

45°

QUARTERSTEP

45°

1/16 STEP

45°