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PDF MC1231A Data sheet ( Hoja de datos )
| Número de pieza | MC1231A | |
| Descripción | (MC1231A / MC1131A) Advanced Brushless Motor Control Chipset | |
| Fabricantes | PMD | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MC1231A (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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Advanced Brushless Motor MC1231A
Control Chipset
MC1131A
Features
Supports 3-phase as well as 2-phase
brushless motors
Performs trajectory generation, servo
loop closure, and commutation
Ultra-smooth sinusoidal commutation
Open or closed loop operation
Software and feature-compatible with
other 1st generation PMD chipsets
Available in 1 or 2 axis configurations
32-bit position, velocity, acceleration and
jerk trajectory profile registers
Choice of S-curve, trapezoidal, or
contoured velocity profile modes
Electronic Gearing
Two travel-limit switches per axis
Choice of PWM or DAC motor output
signals
Easy-to-use packet-oriented command
protocol
Commutation Waveforms
Phase A
3-Phase Brushless
Phase B
Phase C
Phase A
2-Phase Brushless
Phase B
General Description
The MC1231A is a dedicated motion processor which functions
as a complete chip-based motor controller. Packaged in a 2-IC
chipset, this device performs trajectory generation, servo loop
closure, and sinusoidal commutation. The chipset inputs
incremental encoder signals and outputs PWM or
DAC-compatible motor command signals. The MC1231A is
available in a one, or a two-axis configuration.
The MC1231A is functionally similar to other members of
PMD's 1st generation chipset family however it adds the ability
to perform sinusoidal commutation of brushless motors. All of
these devices provide sophisticated motion control capabilities
allowing the creation of complex profile sequences with very low
tracking errors.
Both two and three-phase brushless motors are supported by
the MC1231A. When used with two-phase brushless motors
each phase is separated by 90 degrees. When used with
3-phase brushless motors each phase is separated by 120
degress. The commutation angle is continuously calculated
using the encoder position. User-programmable commutation
parameters allow a very wide range of encoders and motors to
be controlled.
The chipset is controlled by a host processor which interfaces
with the chipset via an 8-bit, bi-directional port. Communications
to/from the chipset consist of packet-oriented messages.
The chipset is packaged in 2 68-pin PLCC packages. Both
chips utilize CMOS technology and are powered by 5 volts.
Doc. Rev. 10.05, Nov 1997
Performance Motion Devices, Inc. 12 Waltham St. Lexington, MA 02421 tel: 781.674.9860 fax: 781.674.9861 www.pmdcorp.com
1 page  
DC Electrical Characteristics
(Vcc and Ta per operating ratings, Fclk = 25.0 Mhz)
Symbol
Vcc
Idd
Input Voltages
Vih
Vil
Vihclk
Vihreset
Output Voltages
Voh
Parameter
Supply Voltage
Supply Current
Logic 1 input voltage
Logic 0 input voltage
Logic 1 voltage for clock pin
(ClkIn)
Logic 1 voltage for reset pin
(reset)
Logic 1 Output Voltage
Vol Logic 0 Output Voltage
Iout Tri-State output leakage current
Iin Input current
Iinclk Input current ClkIn
AC Electrical Characteristics
(see reference timing diagrams)
(Vcc and Ta per operating ratings; Fclk = 25.0 Mhz)
(~ character indicates active low signal)
Timing Interval
Encoder and Index Pulse Timing
Motor-Phase Pulse Width
Dwell Time Per State
Index Pulse Setup and Hold
(relative to Quad A and Quad B low)
Reset Timing
Stable Power to Reset
Reset Low Pulse Width
Clock Timing
Clock Frequency (Fclk)
Clock Pulse Width
Clock Period
T#
T1
T2
T3
T4
T5
Min. Max. Units
4.75 5.25 V
100 mA
2.0
Vcc + 0.3
V
-0.3 0.8 V
3.0
Vcc+0.3
V
4.0
Vcc+0.3
V
2.4 V
0.33 V
-20 20 uA
-50 50 uA
-20 20 uA
Min. Max.
1.6
0.8
0
0.25
1.0
6.7 25.6
19.5 75 (note 2)
39 149 (note 2)
Conditions
open outputs
@CP Io = 300 uA
@I/O Io = 4 mA
@CP Io = 2 mA
@I/O Io = 4 mA
0 < Vout < Vcc
0 < Vi < Vcc
0 < Vi < Vcc
Units
uS
uS
uS
Sec
uS
Mhz
nS
nS
5
5 Page 
ClkOut
I/OAddr
~I/OWrite
Data 0-11,
DACAddr0,1
DACSlct
DAC Interface Timing
T25
T22
T19
T23
T20
T24
T27
T26
T21
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet MC1231A.PDF ] | |
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