ELM313 Datasheet, PDF (1/5 Pages) ELM Electronics – STEPPER MOTOR CONTROLLER

ELM313
Stepper Motor Controller
Description
The ELM313 is an interface circuit for use
between high speed logic and four phase stepper
motor driver circuits. All of the logic required to
provide stepping in two directions is contained in this
one 8 pin package.
This circuit supports only the full-step two phase
mode of operation. This mode provides sequential
phase control output signals for driving a variety of
motors. In this mode, two phases are always
energized, providing several advantages over single
phase full (wave) stepping, at the cost of higher
power consumption by the motor.
The ELM313 can be controlled by a wide variety
of circuits, due to its fully static operation. In addition
to using high speed microprocessor control, suitably
debounced mechanical switches or continuously
running oscillator circuits could also be used.
Features
• Low power CMOS design - typically 1mA at 5V
• Wide supply range - 3.0 to 5.5 volt operation
• Two inputs control Full step (two phase) motion
• No external timing components
• Completely static operation - will maintain a step
position indefinitely
• High current drive outputs - up to 25 mA
• Very high speed - up to 25000 steps per second
Connection Diagram
PDIP and SOIC
(top view)
Applications
• Stepper motor drive logic
• Process sequencing
• Sequential left/right LED driver
VDD 1
A2
Dir 3
Step 4
8 VSS
7B
6C
5D
Block Diagram
20msec
Startup
Timer
Inhibit
Dir 3
Step 4
CW
Step
2A
7B
6C
5D
ELM313DSB
Elm Electronics – Circuits for the Hobbyist
< http://www.elmelectronics.com/ >
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