tb62201afg TOSHIBA Semiconductor CORPORATION, tb62201afg Datasheet - Page 3

• Manufacturer Part Number: tb62201afg
• Description: Dual-stepping Motor Driver Ic For Oa Equipment Using Pwm Chopper Type
• Manufacturer: TOSHIBA Semiconductor CORPORATION

2. Logic Unit A/B (C/D unit is the same as A/B unit)
Note: The RESET and SETUP pins are pulled down in the IC by 10 kΩ resistor.
STROBE
SETUP
RESET
DATA
Function
CLK
This circuit is used to input from the DATA pins micro-step current setting data and to transfer them to the
subsequent stage. By switching the SETUP pin, the data in the mixed decay timing table can be
overwritten.
When not using these pins, connect them to GND. Otherwise, malfunction may occur.
Data input
selector
circuit
Initial
setup
Current feedback circuit
× 2 bits
Torque
16-bit shift register
16-bit shift register
Mixed decay timing table logic circuit
16-bit latch
16-bit latch
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
table 1
timing
Mixed
decay
Micro-step current setting data logic circuit
B unit side
× 2 bits
Decay
table 2
Mixed
decay
timing
3
D/A circuit
B unit side
Current
× 4 bits
table 3
Mixed
decay
timing
A unit side
Output control circuit
table 4
Mixed
decay
timing
B unit side
Phase
× 1 bit
table selector
Mixed
decay
timing
timing
Mixed
decay
TB62201AFG
2005-04-04
Output
control
circuit