tb6560hq TOSHIBA Semiconductor CORPORATION, tb6560hq Datasheet - Page 7

• Manufacturer Part Number: tb6560hq
• Description: Pwm Chopper-type Bipolar Stepping Motor Driver Ic
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Description of Functions
1. Excitation Settings
2. Function
X: Don’t care
3. Initial Mode
4. Current Decay Settings
Excitation Mode
2W1-2-phase
CLK
W1-2-phase
X
X
1-2-phase
2-phase
Y ou can use the M1 and M2 pin settings to configure four different excitation settings. (The default is
2-phase excitation using the internal pull-down.)
When the ENABLE signal goes Low level, it sets an OFF on the output. The output changes to the Initial
mode shown in the table below when the RESET signal goes Low level. In this mode, the status of the
CLK and CW/CCW pins are irrelevant.
When RESET is used, the phase currents are as follows. In this instance, the MO pin is L (connected to
open drain).
Output is generated by four PWM blasts; 25% decay is created by inducing decay during the last blast in
Fast mode; 50% decay is created by inducing decay during the last two blasts in Fast mode; and 100%
decay is created by inducing all four blasts in Fast mode.
If there is no input with the pull-down resistor connection then the setting is Normal.
M2
Dcy2
H
H
L
L
H
H
L
L
CW/CCW
Input
H
L
X
X
Input
A Phase Current
M1
H
H
L
L
RESET
100%
100%
100%
100%
Dcy1
H
H
X
H
H
L
L
L
ENABLE
H
H
H
L
B Phase Current
2W1-2-phase
W1-2-phase
(Excitation)
1-2-phase
Current Decay Setting
2-phase
Mode
100%
CW
CCW
Initial mode
Z
0%
0%
0%
100% Decay
25% Decay
50% Decay
Normal 0%
Output Mode
7
TB6560HQ/FG
2006-05-31