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PDF MC33192 Data sheet ( Hoja de datos )
| Número de pieza | MC33192 | |
| Descripción | MI-BUS INTERFACE STEPPER MOTOR CONTROLLER | |
| Fabricantes | Motorola Semiconductors | |
| Logotipo |  |
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MI-Bus Interface Stepper
Motor Controller
The MC33192 Stepper Motor Controller is intended to control loads in
harsh automotive environments using a serial communication bus. The
MI–Bus can provide satisfactory real time control of up to eight stepper
motors. MI–Bus technology offers a noise immune system solution for
difficult control applications involving relay drivers, motor controllers, etc.
The MC33192 stepper motor controller provides four phase signals to
drive two phase motors in either half or full step modes. When used with an
appropriate Motorola HCMOS microprocessor it provides an economical
solution for applications requiring a minimum amount of wiring and optimized
system versatility.
The MC33192 is packaged in an economical 16 pin surface mount
package and specified at an operating voltage 12 V for – 40°C ≤ TA ≤ 100°C.
• Single Wire Open Bus Capability Up to 10 Meters in Length
• Programmable Address Bus System
• Fault Detection of Half–Bridge Drivers and Motor Windings
• Ceramic Resonator For Accurate and Reliable Transmission of Data
• Sub–Multiple of Oscillator End–of–Frame Signal
• MI–Bus Signal Slew Rate Limited to 1.0 V/µs for Minimum RFI
• MI–Bus Error Diagnostics
• Non–Functioning Device Diagnotics
• Over Temperature Detection
• Address Programming Sequence Status
• Load and Double Battery (Jump Start) Protection
Order this document by MC33192/D
MC33192
MI–BUS INTERFACE
STEPPER MOTOR
CONTROLLER
SEMICONDUCTOR
TECHNICAL DATA
16
1
DW SUFFIX
PLASTIC PACKAGE
CASE 751G
(SO–16L)
Simplified Application
To
Other
Devices
MI–Bus
+Vbatt
7
1
MI
8
VCC
MC33192DW
A1 3
A2 4
B1 5
B2 6
Stepper
Motor
Xtal
Gnd
16 15 14 13 12 11 10 9 2
Ceramic
Resonator
Ground
From MCU
MI–Bus
This device contains 1,528 active transistors.
MOTOROLA ANALOG IC DEVICE DATA
PIN CONNECTIONS
MI–Bus 1
Gnd 2
A1 3
A2 4
B1 5
B2 6
VCC 7
Xtal 8
16 Gnd
15 Gnd
14 Gnd
13 Gnd
12 Gnd
11 Gnd
10 Gnd
9 Gnd
(Top View)
ORDERING INFORMATION
Device
Operating
Temperature Range Package
MC33192DW TA = – 40° to +100°C SO–16L
© Motorola, Inc. 1996
Rev 0
1
1 page  
MC33192
There are four types of system error detections which are
not mutually exclusive; These are:
1) Noise Detection
The system MC33192 slave devices receive the Push
Field message from the MCU twice for each Time Slot (ts)
of the Bi–Phase Code. A receive error occurs when the two
message samples fail to “logic wise” match. Noise and
Bi–Phase detection are discussed further under Message
Coding.
2) Bi–Phase Detection
The system slave devices receiving the Push Field
message from the MCU detect the Bi–Phase Code. A
detector error occurs when the two time slots of the Bi–Phase
Code do not contain an Exclusive–OR logic function.
3) Field Check
A field error is detected when a fixed–form bit field
contains an improper number of bits. A bit error can also be
detected by the MCU during the Push Field. The MCU can
simultaneously monitor the MI–Bus at the time it is sending
data. A bit error is detected if the sent bit value does not
match the value which was monitored.
4) Urgent Output Disable
If the MI–Bus becomes shorted to ground, the slave
device outputs will be disabled after a period of 9ts. The MCU
itself can take advantage of this feature to “globally” disable
the outputs of all system slave devices by keeping the
MI–Bus at a logic “0” level for a duration of 9ts or more.
Normal operation is resumed when the MCU sends a
“standard” instruction over the MI–Bus.
Basic Stepper Motor Construction and Operation
Stepper motors are constructed with a permanent magnet
rotor magnetized with the same number of pole pairs as
contained in one stator coil section. Operationally, stepper
motors rotate at constant incremental angles by stepping one
step every time the current switches discretely in one stator
field coil causing the North–South stator field to rotate either
clockwise or counter–clockwise causing the permanent
magnet rotor to follow (see Figure 5). For simplicity, assume
the starting condition of the A1 to A2 stator field to be top to
bottom polarized N to S and the B1 to B2 stator field to be left
to right polarized N to S. The resulting stator field will produce
a vector which points in the direction of position 3. The rotor
will, in this case, be in the position shown in Figure 5 (pointing
to position 1). This initial condition corresponds to that of
step 1 in Figure 6. As the direction of current flow in the B1 to
B2 stator field is reversed, the field polarity of the B1 to B2
also reverses and is left to right polarized S to N. This causes
the resulting stator field vector to point in the direction of
position 4. This in turn causes the N–S rotor to follow and
rotate 90° in a clockwise direction and point in the direction of
position 2. This condition corresponds to step 2 of Figure 6.
Continued clockwise rotor steps will be experienced as the
stator field continues to be incrementally rotated as shown in
steps 3, 4, 5, etc. of Figure 6. The 90° steps in this simplistic
example constitute “full steps”. It is to be noticed that both
coils, in the foregoing full step example, were simultaneously
energized in one of two directions. It is possible to increment
the rotor in 45° “intermediate steps” or “half steps” by
alternately energizing only one stator coil at a time in the
appropriate direction while turning the other stator coil off.
The drive signals for Half Step operation are shown in
Figure 7. The Power output stages of the MC33192 consist
of two H–Bridges capable of driving two–phase bi–polar
permanent magnet motors in either half or full step
increment.
Figure 5. Permanent Magnet Stepper Motor
A1
34
B1 B2
21
A2
Figure 6. 4–Step “Full Step” Operation
Step 1 2 3 4 5 6
Coil A +
(A1 to A2) –
Coil B +
(B1 to B2) –
Stator
Field
Rotor
Position
Rotor
Direction
CCW
CW
Figure 7. 8–Step “Half Step” Operation
Step
Coil A +
(A1 to A2) –
Coil B +
(B1 to B2)
–
Stator
Field
1 234 56 78 1
Rotor
Position
Rotor
Direction
CCW
CW
MOTOROLA ANALOG IC DEVICE DATA
5
5 Page 
MC33192
Figure 13. Single Wire MI–Bus Control of 8 Stepper Motors
12 V
5.0 V
Regulator
Program
Run
R2
Micorcontroller
Pout
R1
Z1
R3
Q1
MC68HC05B6
MC68HC11KA
D1
R4
R5
Pin
D2 R6
D3
Gnd
Mi–Bus
MC33192DW
MC33192DW
MC33192DW
MC33192DW
MC33192DW
MC33192DW
MC33192DW
MC33192DW
Stepper
Motor
1
Stepper
Motor
2
Stepper
Motor
3
Stepper
Motor
4
Stepper
Motor
5
Stepper
Motor
6
Stepper
Motor
7
Stepper
Motor
8
MOTOROLA ANALOG IC DEVICE DATA
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet MC33192.PDF ] | |
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