4

Featur es And Benefits

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Complete Microstepping Control System with the IM2000S 64 Pin QFP

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Up to 10MHz Step Clock Rate

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Internal Sine/Cosine Generator

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PWM Phase Current Control

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Minimal External Components

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Automatic Current Reduction

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14 Selectable Resolutions — Both in Decimal and Binary

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Number of Microsteps Per Step can be Changed On-The-Fly Without Motor Movement Interruption

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Up to 51,200 Steps/Rev

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Standalone or Buss Modes

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Single 5V Power Supply

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Short Circuit and Over

Temperature Protection Inputs

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Fault Output

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On Full Step Output

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Anti-Resonance

Block Diagram

Figure 1.2: IM2000S Block Diagram

VSA

VSB1

VTMP

VV

VCA

VCB

CIR0

CIR1

ILOW

IHI

RESET

DIR

EN

MODE

WR

SCLK

CSEL

RSEL

INPUT

LOGIC

SIGNAL

SHAPER

SINE/COSINE

POSITION

GENERATOR

MICROSTEP

RESOLUTION

SELECTION

MSEL0

MSEL1

MSEL2

MSEL3

ANTI-

RESONANCE

AUTO

SLOW/FAST

DECAY

AUTO

CURRENT

REDUCTION

CURRENT

CONTROL

OSC

ROM

FULL STEP

POSITION

GENERATOR

PROTECTION

CIRCUIT

FAULT

ENA

SIGNA

PWMA

HLA

LLA

HRA

LRA

HLB

LLB

HRB

LRB

PWMB

SIGNB

ENB

OSCR

OSCRC

CURRED

SINE0

SINE1

SINE2

SINE3

SINE4

SINE5

SINE6

SINE7

COS0/AD0

COS1/AD1

COS2/AD2

COS3/AD3

COS4/AD4

COS5/AD5

COS6/AD6

COS7/AD7

FULL STEP

COUT