Specification

[AP1034]
016003455-E-01 - 9 - 2016/06
10. Functional Descriptions
10.1 Input and Output of Terminal

Truth Table
Table 1. Output state against SLEEPB and ENABLEB settings
SLEEPB ENABLEB
OUT1A
OUT2A
OUT1B
OUT2B
Condition
L X
Output OFF
(Hi-Z)
Output OFF
(Hi-Z)
Sleep mode
Internal control circuit : OFF
H H
Output OFF
(Hi-Z)
Output OFF
(Hi-Z)
Disable mode
Internal control circuit : ON
H L Output On Output On
Enable mode
DIR=”H” : CW
DIR=”L” : CCW
Note 10. X : Don’t Care

ENABLEB : Output Enable Terminal
When the input is “H”, this pin turns off all the H-bridge outputs (motor output becomes Hi-Z). When the input
is “L”, all H-bridge outputs become enable. At that time, the input of sequencer (
STEP,DIR,MODE1,MODE2)
is independent of the logic of enable. ENABLEB input is the function of making H-Bridge output off. During
output is off, the input of sequencer
(STEP,DIR,MODE1,MODE2) is hold. Refer to Figure 4.
Table 2. Settings of output enable terminal
ENABLEB
Condition
L
Operating mode
H
Output Hi-Z (Electrical angle hold)

SLEEPB : Sleep Mode Setting Terminal
When the input is “L”, this pin sets the IC in sleep mode, and turns off all the H-bridge outputs, internal
regulator, and charge pump circuit (motor output becomes Hi-Z). Control circuit is reset. If the “H” is input,
the sleep mode is canceled. After the sleep mode is canceled, it restarts from the home position (Table 9).
STEP input cannot be input during 3msec(max) after the sleep mode is canceled, to wait for the stable
operation of internal charge pump. Refer to Figure 5.
Please input “L” to SLEEPB terminal when turning on
power.
Table 3. Settings of sleep mode terminal
SLEEPB
Condition
L
SLEEP mode (Output : Hi-Z)
H
Operating mode