MC1451A Datasheet, PDF (1/51 Pages) List of Unclassifed Manufacturers – Advanced Step Motor Control Chipset

Advanced Step Motor ^{MC1451A, MC1451A-E}
Control Chipset
MC1251A, MC1251A-E
MC1151A, MC1151A-E
Features
Advanced control of up to 4 step motors
per chipset
High speed pulse and direction output
S-curve, trapezoidal, velocity contouring,
and electronic gearing trajectory modes
Optional incremental encoder feedback
Software & feature compatible with other
versions of PMD's chipset family
Available in 1, 2, or 4 axis configurations
32-bit position, velocity, acceleration and
jerk trajectory profile registers
Pulse and direction output for each axis at
up to 1.5 Mpulses/sec
On-the-fly stall detection
Two travel-limit switches per axis
External motion breakpoint per axis
Intelligent easy-to-use packet-oriented
command protocol
Programmable pulse output modes
Chipset Developer's kit available
Typical Configuration
Host
Processor
General Description
The MC1451A is a dedicated motion processor which functions
as a complete chip-based step motor controller. Packaged in a
2-IC chipset, this device performs trajectory generation and
pulse and direction signal generation for use in a wide variety of
stepper-based systems. The MC1451A provides an optional
third IC which allows incremental encoder signal input for
position verification and on-the-fly stall detection. The MC1451A
is available in a one, a two, and a four-axis configuration.
The MC1451A is functionally similar to other PMD motion
processors however it is dedicated to the control of step motors,
instead of servo motors. All of these devices provide
sophisticated trajectory generation and synchronization features
allowing the creation of complex motion sequences.
Amp
M E _{Axis 1}
In addition to pulse and direction circuitry which can output at
up to 1.5 megapulses per second the chipset provides two limit
switches per axis, a programmable external signal breakpoint
per axis, and an 'At Rest' output signal.
MC1451A
(I/O & CP
& ENC)
Amp
Amp
M E Axis 2
The chipset is controlled by a host processor which interfaces
with the chipset via an 8-bit bi-directional port. Communications
(MC1451A, MC1251A ^{to/from the chipset consist of packet-oriented messages. A host}
only)
interrupt line is provided so that the chipset can signal the host
when special conditions occur such as stall detection.
M E _{Axis 3}
(MC1451A only)
The chipset is packaged in 2 68-pin PLCC packages. An
optional third 44 pin PLCC chip provides encoder input. All
chips are CMOS and are powered by 5 volts.
Amp
M E Axis 4
(MC1451A only)
Doc. Rev. 12.02, Nov. 1997
Performance Motion Devices, Inc. 12 Waltham St. Lexington, MA 02421 tel: [phone] fax: [phone] www.pmdcorp.com