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ELM310

Description
STEPPER MOTOR CONTROLLER
File Size26KB,5 Pages
ManufacturerETC
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ELM310 Overview

STEPPER MOTOR CONTROLLER

ELM310
Stepper Motor Controller
Description
The ELM310 is an interface circuit for use
between high speed logic outputs and four phase
stepper motor driver circuits. By suitably debouncing
mechanical switches, the circuit could also be used
for manually controlling stepper motors as well.
This circuit supports two popular modes of
operation, and can be switched between the two ‘on
the fly’.
The full-step, or single phase wave mode, as it
is sometimes called, is entered into at powerup. This
mode provides sequential single phase output
signals for driving a variety of circuits with only one
output active at any one time.
The other mode that the ELM310 supports is the
half-step. In this case, there are eight distinct output
patterns as opposed to the four for the full-step
mode. For each step, the pattern alternates between
a single winding being energized, and two adjacent
windings, providing eight steps in total.
Features
• Low power CMOS design - typically 1mA at 5V
• Wide supply range - 3.0 to 5.5 volt operation
• Two inputs control both mode and motion
• No external timing components
• Completely static operation - will maintain a step
position indefinitely
• High current drive outputs - up to 25 mA
• Both half and full stepping supported
• Very high speed - up to 25000 steps per second
Connection Diagram
PDIP and SOIC
(top view)
V
DD
1
2
3
4
8
7
6
5
V
SS
B
C
D
Applications
• Stepper motor drive logic
• Process sequencing
• Sequential left/right LED driver
A
Dir
Step
Block Diagram
Mode
Switch
Logic
Full
Half
2
A
7
B
Dir
3
CW
6
C
Step
4
Step
5
D
ELM310DSB
Elm Electronics – Circuits for the Hobbyist
< http://www.elmelectronics.com/ >
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