Toshiba e-studio 202L - Page 275

12
June 2004 © TOSHIBA TEC e-STUDIO200L/202L/230/232/280/282 DEVELOPMENT SYSTEM
12 - 5
The block diagram of TA8428 and the operation of the control logic are shown below.
Fig.12-4
Input Output
State
IN1 IN2 M (+) M (-)
H H L L Brake
L H L H CCW
H L H L CW
L L OFF
(High impedance)
Stop
1 2 3 4 5 6 7
IN1 IN2 M(+) GND M(-) N.C. VCC
Thermal shutdown
over-current
protection circuit
Control logic