33976 Datasheet PDF - Freescale Semiconductor
| Part Number | 33976 | |
| Description | Dual Gauge Driver | |
| Manufacturers | Freescale Semiconductor | |
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Advance Information
Document Number: MC33976
Rev 4.0, 1/2007
Dual Gauge Driver with
Configurable Response Time
33976
The 33976 is a single-packaged, Serial Peripheral Interface (SPI)
controlled, dual step motor gauge driver integrated circuit (IC). This
monolithic IC consists of four dual output H-Bridge coil drivers and the
associated control logic. Each pair of H-Bridge drivers is used to
automatically control the speed, direction, and magnitude of current
through the two coils of a two-phase instrumentation step motor,
similar to an MMT-licensed AFIC 6405 or Switec MS-X15.xxx motor.
The 33976 is ideal for use in automotive instrumentation systems
requiring distributed and flexible step motor gauge driving. The
device also eases the transition to step motors from air core motors
by emulating the air core pointer movement with little additional
processor bandwidth utilization.
Features
•MMT-Licensed Two-Phase Step Motor Compatible
•Switec MS-X15.xxx Step Motor Compatible
•Minimal Processor Overhead Required
•Fully Integrated Pointer Movement and Position State Machine
with Channel-Independent Configurable Pointer Movement
•4096 Possible Steady State Pointer Positions
•340° Maximum Pointer Sweep
•Maximum Acceleration of 4500°/s2
•Maximum Pointer Velocity of 400°/s
•Analog Microstepping (12 Steps/Degree of Pointer Movement)
•Pointer Calibration and Return to Zero (RTZ)
•SPI-Controlled 16-Bit Word
•Calibratable Internal Clock
•Low Sleep Mode Current
•Pb-Free Packaging Designated by Suffix Code EG
CONFIGURABLE DUAL GAUGE DRIVER
DW SUFFIX
EG SUFFIX (PB-FREE)
98ASB42344B
24-PIN SOICW
ORDERING INFORMATION
Device
Temperature
Range (TA)
Package
MC33976DW/R2
MCZ33976EG/R2
-40°C to 125°C
24 SOICW
VPWR
5.0 V
VDD
Regulator
MCU
33976
VPWD
VDD
SIN0+
SIN0-
COS0+
COS0-
RTZ SIN1+
RST SIN1-
CS
SCLK
SI
SO
COS1+
COS1-
GND
Motor 0
Motor 1
Figure 1. 33976 Simplified Application Diagram
* This document contains certain information on a new product.
Specifications and information herein are subject to change without notice.
© Freescale Semiconductor, Inc., 2007. All rights reserved.
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ELECTRICAL CHARACTERISTICS
STATIC ELECTRICAL CHARACTERISTICS
STATIC ELECTRICAL CHARACTERISTICS
Table 3. Static Electrical Characteristics
Characteristics noted under conditions 4.75 V ≤ VDD ≤ 5.25 V, -40°C ≤ TJ ≤ 150°C, GND = 0 V unless otherwise noted.
Typical values noted reflect the approximate parameter means at TA = 25°C under nominal conditions unless otherwise noted.
Characteristic
Symbol
Min
Typ
Max Unit
POWER INPUT
Supply Voltage Range
Fully Operational
Limited Operational (6), (7)
VPWR
6.5
4.0
–
–
V
26
26
VPWR Supply Current
Gauge 1 and 2 Outputs ON, No Output Loads
VPWR Supply Current (All Outputs Disabled)
Reset = Logic [0], VDD = 5.0 V
Reset = Logic [0], VDD = 0 V
Overvoltage Detection Level (8)
Undervoltage Detection Level (9)
Logic Supply Voltage Range (5.0 V Nominal Supply)
Under VDD Logic Reset
VDD Supply Current
Sleep: Reset Logic [0]
Outputs Enabled
POWER OUTPUTS
IPWR(ON)
IPWSLP1
IPWRSLP2
VPWROV
VPWRUV
VDD
VDDUV
IDD(OFF)
IDD(ON)
–
–
–
26
5.0
4.5
–
–
–
4.0
42
15
32
5.6
5.0
–
40
1.0
mA
6.0
µA
60
25
38 V
6.2 V
5.5 V
4.5 V
65 µA
1.8 mA
Microstep Output (Measured Across Coil Outputs)
SIN0,1, ± (COS0,1, ±) (refer to Table 1)
ROUT = 200 Ω, PE6 = 0
Steps 6, 18 (0, 12)
Steps 5, 7, 17, 19 (1, 11, 13, 23)
Steps 4, 8, 16, 20 (2, 10, 14, 22)
Steps 3, 9, 15, 21 (3, 9, 15, 21)
Steps 2, 10, 14, 22 (4, 8,16, 20)
Steps 1, 11, 13, 23 (5, 7, 17, 19)
Steps 0, 12 (6, 18)
V
VST6
VST5
VST4
VST3
VST2
VST1
VST0
4.82
0.94 VST6
0.84 VST6
0.68 VST6
0.47 VST6
0.23 VST6
-0.1
5.3
0.97 VST6
0.87 VST6
0.71 VST6
0.50 VST6
0.26 VST6
0
6.0
1.0 VST6
0.96 VST6
0.8 VST6
0.57 VST6
0.31 VST6
0.1
Notes
6. Outputs and logic remain active; however, the larger coil voltage levels may be clipped. The reduction in drive voltage may result in a
loss of position control.
7. The logic will reset at some level below the specified Limited Operational minimum.
8. Outputs will disable and must be re-enabled via the PECCR command.
9. Outputs remain active; however, the reduction in drive voltage may result in a loss of position control.
Analog Integrated Circuit Device Data
Freescale Semiconductor
33976
5
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