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PDF MC1241A Data sheet ( Hoja de datos )
| Número de pieza | MC1241A | |
| Descripción | (MC1141A / MC1241A) Advanced Microstepping Motion Control Chipset | |
| Fabricantes | Performance Motion Devices | |
| Logotipo |  |
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Advanced Microstepping
Motion Control Chipset
MC1241A
MC1141A
Features
Internal generation of microstepping signals
2-phase as well as 3-phase stepper motors
64 microsteps per full step
S-curve, trapezoidal, and velocity profile
trajectory modes
Incremental encoder feedback
On-the-fly motor stall detection
Software & feature compatible with other
versions of PMD's chipset family
Available in 1 or 2 axis configurations
32-bit position, velocity, acceleration and jerk
trajectory profile registers
Electronic Gearing
Two travel-limit switches per axis
Choice of PWM or DAC motor output signals
Chipset Developer's Kit Available
Microstepping Waveforms
2-Phase Stepper
Phase A Phase B
90 Deg
64
Phase A
128 192 256
3-Phase Stepper
Phase B
Phase C
Microsteps
320
120 Deg
General Description
The MC1241A is a dedicated motion processor which functions as a
complete chip-based stepper motor controller. Packaged in a 2-IC
chipset, this device performs trajectory profile generation and
microstepping signal generation. The chipset outputs PWM or
DAC-compatible motor command signals which directly drive the
windings of the stepping motor, eliminating the need for external
microstepping circuitry. The MC1241A also provides the ability to
input incremental encoder signals. It is available in a one, or a two-axis
configuration.
The MC1241A is functionally similar to other members of PMD's 1st
Generation Motion Processor Family however it adds the ability to
perform micrstepping signal generation. All of these devices provide
sophisticated trajectory generation allowing the creation of complex
motion sequences.
Both two and three-phase stepping motors are supported by the
MC1241A. An internal ROM-based lookup table is used to generate
the microstepping waveforms. The motor power level can be controlled
with a resolution of 16 bits. Changes to the motor power level can be
coordinated with other profile changes to optimize motor heat
dissipation under different load and acceleration conditions.
www.DataSheet4U.comThe 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. 11.03, Nov 1997
Performance Motion Devices, Inc. 12 Waltham St. Lexington, MA 02421 tel: 781.674.9860 fax: 781.674.9861 www.pmdcorp.com
www.DataSheet4U.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 MC1241A.PDF ] | |
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