TB62202AFG Просмотр технического описания (PDF) - Toshiba

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TB62202AFG

TOSHIBA Bi−CMOS Processor IC Silicon Monolithic

Toshiba 

TB62202AFG

2. Logic unit A/B (C/D unit is the same as A/B unit)

Function

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.

SETUP

DATA

CLK

STROBE

RESET

Micro-step current setting data logic circuit

16-bit shift register

Data input

selector

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

16-bit latch

A unit side

TORQUE

× 2 bits

DECAY

× 2 bits

B unit side

CURRENT

× 4 bits

B unit side

PHASE

× 1 bit

B

MIXED

DECAY

TIMING

Output control

circuit

Current feedback circuit

D/A circuit Output control circuit

Note: The RESET and SETUP pins are pulled down in the IC by 10-kΩ resistor.

When not using these pins, connect them to GND. Otherwise, malfunction may occur.

3

2005-04-04

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