ha13561f Renesas Electronics Corporation., ha13561f Datasheet - Page 9

• Manufacturer Part Number: ha13561f
• Description: Combo Spindle & Vcm Driver
• Manufacturer: Renesas Electronics Corporation.

3. Motor start-up seaquence
The HA13561F has the motor stop detector as shown hatching block. This function is monitoring the
situation of the motor while the motor is running by B-EMF sensing. If the motor will be caused a
misstarting up, the motor will be automatically restarted within 200 ms after the motor stopped. This
function increase the reliability for the motor starting up.
SPNENAB
Rotation
Speed
Internal
READY
READY
(Pin 43)
Note *1. Speed lock detection range No is as follows.
(a) Timing chart of start-up seaquence
(b) Retry circuitry for misstart-up
*2. READY output goes to High, if the rotation speed error keeps to be less than
*3. The turning point of driving mode from switching synchronize to the turning
point of READY output from Low to High.
No
0
No longer time than tdelay.
tdelay=
No =1.2% when CNTSEL=H
(Motor off)
Motor
=1.5% when CNTSEL=Open
=1.8% when CNTSEL=L
Open
on
500 • 10
fclk [Hz]
Synchronous
Driving
7
[ms]
Synchronous
(Motor stop)
Switching
driving
Driving by
B-EMF
sensing
9
t
delay
(not stop)
*
2
Driving by
B-EMF
sensing
Soft Switching*
detector
Motor
stop
3
t
No+ No*
No– No*
HA13561F
1
1