Hardware
Documentation
Dat a Sh e e t
HAL 385x, HAL 387x
Programmable 2D Position Sensors
with Arbitrary Output Function
®
Edition Dec. 16, 2014
DSH000167_001E
HAL 385x, HAL 387x
Copyright, Warranty, and Limitation of Liability
The information and data contained in this document
are believed to be accurate and reliable. The software
and proprietary information contained therein may be
protected by copyright, patent, trademark and/or other
intellectual property rights of Micronas. All rights not
expressly granted remain reserved by Micronas.
Micronas assumes no liability for errors and gives no
warranty representation or guarantee regarding the
suitability of its products for any particular purpose due
to these specifications.
By this publication, Micronas does not assume respon-
sibility for patent infringements or other rights of third
parties which may result from its use. Commercial con-
ditions, product availability and delivery are exclusively
subject to the respective order confirmation.
Any information and data which may be provided in the
document can and do vary in different applications,
and actual performance may vary over time.
All operating parameters must be validated for each
customer application by customers’ technical experts.
Any new issue of this document invalidates previous
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ment and to make changes to the document’s content
at any time without obligation to notify any person or
entity of such revision or changes. For further advice
please contact us directly.
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Micronas Trademarks
– HAL
– 2D HAL
– 3D HAL
DATA SHEET
Third-Party Trademarks
All other brand and product names or company names
may be trademarks of their respective companies.
License Note
HAL 385x and HAL 387x use licenses of Fraunhofer
Institute for Integrated Circuits IIS.
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Dec. 16, 2014; DSH000167_001EN
Micronas
DATA SHEET
HAL 385x, HAL 387x
Contents
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Section
1.
1.1.
1.2.
2.
2.1.
3.
3.1.
3.2.
3.2.1.
3.2.2.
3.2.2.1.
3.2.2.2.
3.3.
3.4.
3.5.
4.
4.1.
4.2.
4.3.
4.4.
4.5.
4.6.
4.6.1.
4.6.2.
4.7.
4.8.
4.9.
4.10.
4.11.
5.
5.1.
5.2.
5.3.
5.4.
5.5.
6.
6.1.
6.2.
6.3.
7.
Title
Introduction
Major Applications
Features
Ordering Information
Device-Specific Ordering Code
Functional Description
General Function
Signal Path and Register Definition
Signal Path
Register Definition
RAM register
EEPROM registers
Output Linearization
NVRAM Register
On-board Diagnostic Features
Specifications
Outline Dimensions
Soldering, Welding, Assembly
Dimensions of Sensitive Area
Package Parameters and Position of Sensitive Areas
Pin Connections and Short Description
Absolute Maximum Ratings
Storage and Shelf Life SOIC8 package
Storage and Shelf Life TO92UP package
Recommended Operating Conditions
Characteristics
Magnetic Characteristics
Open-Circuit Detection (only applicable for HAL385x)
Overvoltage and Undervoltage Detection
Application Notes
Ambient Temperature
EMC and ESD
Application Circuit for HAL385x
Application Circuit for HAL387x
Measurement of a PWM Output Signal of HAL387x
Programming of the Sensor
Programming Interface
Programming Environment and Tools
Programming Information
Data Sheet History
Micronas
Dec. 16, 2014; DSH000167_001EN
3
HAL 385x, HAL 387x
Programmable 2D Position Sensors with Arbitrary
Output Function
Release Note: Revision bars indicate significant
changes to the previous edition.
DATA SHEET
Major characteristics like gain and offset of X/Y- and
Z-channel, reference position, phase shift between X/
Y- and Z-signal, hysteresis, low-pass filter frequency,
output slope, and offset and clamping levels can be
adjusted to the magnetic circuitry by programming the
non-volatile memory.
The sensor contains advanced on-board diagnostic
features that enhance fail-safe detection. In addition to
standard checks, such as overvoltage and undervolt-
age detection and wire break, internal blocks such as
ROM and signal path are monitored during normal
operation. For devices with a PWM output, the error
modes are indicated by a change of PWM frequency
and duty-cycle.
The devices are designed for automotive applications
and operate with junction temperature from
40
°C up
to 170 °C.
The sensors are available in a very small four-pin
leaded transistor package TO92UP, as well as in a
SOIC8 package.
1. Introduction
The HAL 38xy is a new sensor family using the
Micronas 3D HAL technology. This new family has sev-
eral members. HAL 385x provides a linear, ratiometric
analog output signal with integrated wire-brake detec-
tion working with pull-up or pull-down resistor.
HAL 387x features a configurable PWM output with up
to 12 bit resolution with frequencies between 0.25 kHz
and 2 kHz.
Conventional planar Hall technology is only sensitive
to the magnetic field orthogonal to the chip surface. In
addition to the orthogonal magnetic field, HAL 38xy is
also sensitive for magnetic fields applied in parallel to
the chip surface. This is possible by integrating vertical
Hall plates into the standard CMOS process.
The sensor cell can measure three magnetic field
components BX, BY, and BZ. This enables a new set
of potential applications, like wide distance or through-
shaft angular measurements. The table below
describes the different family members.
1.1. Major Applications
Due to the sensor’s versatile programming characteris-
tics and its high accuracy, the HAL 38xy is the optimal
system solution for applications such as:
– Linear movement measurement,
• EGR valve position
• Clutch pedal position
– Through-shaft rotary position measurement, like
• Gear selector
• Throttle valve position, etc.
Type
HAL 3855
HAL 3856
HAL 3875
HAL 3876
Output Format
Analog
Analog
PWM
PWM
Detectable Field
Component
B
Y
and B
Z
B
X
and B
Z
B
Y
and B
Z
B
X
and B
Z
On-chip signal processing calculates the angle out of
two of the magnetic field components and converts this
value to an output signal. Due to the measurement
method, the sensor exhibits excellent drift performance
over the specified temperature range resulting in a new
class of accuracy for angular or linear measurements.
Additionally to the built-in signal processing, the sen-
sor features an arbitrary programmable linear charac-
teristic for linearization of the output signal (with up to
32 setpoints).
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Dec. 16, 2014; DSH000167_001EN
Micronas
DATA SHEET
HAL 385x, HAL 387x
1.2. Features
– Angular and position measurement extremely
robust against temperature and stress influence
– 12 bit ratiometric linear output for HAL 385x
– 0.25 kHz to 2 kHz (up to 12 bit) PWM output for
HAL 387x
– Programmable arbitrary output characteristic with
up to 32 setpoints
– 8 kHz sampling frequency
– Operates from 4.5 V up to 5.5 V supply voltage
– Operates from
40
°C up to 170 °C junction temper-
ature
– Programming via the sensors output pin
– Programmable characteristics in a non-volatile
memory (EEPROM) with redundancy and lock func-
tion
– Programmable 1
st
-order low-pass filter
– Programmable hysteresis
– Programmable output slope and offset
– X/Y- and Z-channel gain and offset of signal path
programmable
– Phase shift between X/Y- and Z-channel program-
mable
– Programmable output clamping for error band defi-
nition
– Programmable reference position
– Programmable magnetic range detection
– 32 bit identification number for customer
– 32 bit identification number with Micronas produc-
tion information (like X,Y position; wafer number; lot
number)
– On-Board diagnostics of different functional blocks
of the sensor
– Short-circuit protected push-pull output
– Over- and reverse voltage protection at V
SUP
– Under- and overvoltage detection of V
SUP
– Wire-break detection with pull-up or pull-down resistor
– EMC and ESD robust design
Micronas
Dec. 16, 2014; DSH000167_001EN
5
