AS5047U_技术文档

AS5047U

14-Bit On-Axis Magnetic Rotary

Position Sensor with Up to 14-Bit

Binary Incremental Pulse Count

The AS5047U is a high-resolution rotary position sensor for fast

absolute angle measurement over a full 360-degree range. This

new position sensor is equipped with a revolutionary

integrated dynamic angle error compensation (DAEC™) with

almost 0 latency at higher rotational speed. For increased signal

quality at lower rotational speed, the dynamic filter system

(DFS™) reduces transition noise.

General Description

The robust design of the device suppresses the influence of any

homogenous external stray magnetic field. A standard 4-wire

SPI serial interface with a CRC protection allows a host

microcontroller to read 14-bit absolute angle position data

from the AS5047U and to program non-volatile settings without

a dedicated programmer.

Incremental movements are indicated on a set of ABI signals

with a maximum resolution of 16989 steps / 4096 pulses per

revolution.

Brushless DC (BLDC) motors are controlled through a standard

UVW commutation interface with a programmable number of

pole pairs from 1 to 7. The absolute angle position is also

provided as PWM-encoded output signal.

AS5047U are single die sensors and are available in a TSSOP14

Package.

Ordering Information and Content Guide appear at end of

datasheet.

Key Benefits & Features

The benefits and features of this device are listed below:

Figure 1:

Added Value of Using the AS5047U

Benefits

Features

• DAEC ™ Dynamic angle error compensation

• DFS ™ Dynamic filter system

• Easy to use – saving costs on DSP

• Higher durability and lower system costs (no

shield needed)

• Magnetic stray field immunity

• Versatile choice of the interface

• Independent output interfaces: SPI, ABI, UVW, PWM

ams Datasheet

[v1-00] 2018-Oct-30

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AS5047U − General Description

Applications

The AS5047U supports BLDC motor commutation for the most

challenging industrial applications such as:

• Factory automation

• Building automation

• Robotics

• PMSM (permanent magnet synchronous motor)

• Stepper motor closed loop

• Optical encoder replacement

Block Diagram

The functional blocks of the AS5047U are shown below:

Figure 2:

AS5047U Block Diagram

VDD3V3

Volatile

CSn

Memory

SCL

SPI

MISO

MOSI

OTP

VDD

LDO

P2ram_err

or

CRC

A

ABI

B

OffCompN

otFinished

Cordic

Overflow

I/PWM

14-Bit ADC

U

V

Adaptive

Filter

Interpolator

AFE

CORDIC

DAEC

UVW

PWM

W/PWM

Hall sensor

array

AGC

AGC-

warning

WDTST

Oscillator

AS5047U

GND

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AS5047U − Pin Assignment

Pin Assignment

Figure 3:

TSSOP-14 Pin Assignment

CSn

I/PWM

GND

VDD3V3

VDD

1

14

13

12

11

10

9

CLK

MISO

MOSI

TEST

B

2

3

4

5

6

7

U

V

A

8

W/PWM

Figure 4:

AS5047U Pin Description

Pin Number

Pin Name

Pin Type

Description

(1)

(2)

1

2

CSn

CLK

MISO

MOSI

TEST

B

Digital input

SPI chip select (active low)

(3)

SPI clock

(4)

(3)

3

Digital output

SPI master data input, slave output

(1)

4

Digital input

SPI master data output, slave input

Test pin (connect to ground)

5

(5)

6

Digital output

Power supply

Incremental signal B

(5)

7

A

Incremental signal A

(5)

8

W/PWM

V

Commutation signal W or PWM-encoded output

(5)

9

Commutation signal V

(5)

10

11

U

Commutation signal U

VDD

5V power supply voltage for on-chip regulator

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AS5047U − Pin Assignment

Pin Number

Pin Name

Pin Type

Description

3.3V on-chip low-dropout (LDO) output. Requires an

external decoupling capacitor (1μF)

12

VDD3V3

Power supply

13

14

GND

Power supply

Digital output

Ground

(5)

I/PWM

Incremental signal I (index) or PWM

Note(s):

1. Floating state of a digital input is not allowed.

2. If SPI is not used, a pull-up resistor on CSn is required.

3. If SPI is not used, a pull-down resistor on CLK and MOSI is required.

4. If SPI is not used, the pin MISO can be left open.

5. If ABI, UVW or PWM is not used, the pins can be left open.

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AS5047U − Absolute Maximum Ratings

Stresses beyond those listed under Absolute Maximum Ratings

Absolute Maximum Ratings

may cause permanent damage to the device. These are stress

ratings only. Functional operation of the device at these or any

other conditions beyond those indicated under Operational

Conditions is not implied. Exposure to absolute maximum

rating conditions for extended periods may affect device

reliability.

Figure 5:

Absolute Maximum Ratings

Symbol

Parameter

Min

Max

Units

Comments

Electrical Parameters

VDD5

VDD3

DC Supply Voltage at VDD pin

-0.3

7.0

5.0

V

Not operational

DC Supply Voltage at

VDD3V3 pin

Not operational

DC Supply Voltage at GND

V

-0.3

0.3

VDD+0.3

100

V

SS

V

Input Pin Voltage

in

Input Current

(latch-up immunity)

I

-100

mA

AEC-Q100-004

scr

Total Power Dissipation

(all supplies and outputs)

P

150

mW

kV

T

Electrostatic Discharge

ESD

Electrostatic Discharge HBM

2

AEC-Q100-002

HBM

Temperature Ranges and Storage Conditions

Operating Temperature

Range

T

-40

150

45

°C

Ambient temperature

AMB

Programming @ room

temperature (25°C 20°C)

T

Programming Temperature

5

aProg

T

Storage Temperature Range

Package Body Temperature

-55

150

260

°C

STRG

T

IPC/JEDEC J-STD-020

BODY

Relative Humidity

(non-condensing)

RH

5

85

%

NC

Represents a maximum floor

lifetime of 168h

MSL

Moisture Sensitivity Level

3

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[v1-00] 2018-Oct-30

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AS5047U − Electrical Characteristics

All in this datasheet defined tolerances for external

components need to be assured over the whole operation

conditions range and also over lifetime.

Electrical Characteristics

Overall condition: T

= -40°C to 150°C components spec;

AMB

unless otherwise noted.

Figure 6:

Operational Conditions

Symbol

Parameter

Conditions

Min

Typ

Max

Units

VDD5

Positive supply voltage 5.0V operation mode

3.3V operation mode;

4.5

5.0

5.5

V

from -40°C to 150°C

(NOISESET bit has to

set)

VDD3V3

Positive supply voltage

3.0

3.3

3.6

3.5

V

Supply voltage

required for

programming in 3.3V

operation

VDD_Burn

Positive supply voltage

3.3

3.2

Voltage at VDD3V3

Regulated voltage

V

3.4

3.6

16

V

mA

V

REG

pin if VDD ≠ VDD3V3

I

Supply current

DD

High-level input

voltage

V

0.7 × VDD

IH

V

Low-level input voltage

0.3 × VDD

V

IL

High-level output

voltage

V

VDD - 0.5

V

OH

Low-level output

voltage

V

+ 0.4

SS

V

OL

C_L

50

pF

Output current 5 V

I_Out_5V

4

2

mA

(1)

operation

Output current 3 V

I_Out_3V

mA

(1)

operation

Note(s):

1. Only applicable for digital output pins I/PWM, A, B, U, V, W/PWM, MISO.

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AS5047U − Electrical Characteristics

Magnetic Characteristics

Figure 7:

Magnetic Characteristics

Symbol

Parameter

Conditions

Min Typ Max Unit

Required orthogonal component of

the magnetic field strength

measured at the package surface

along a circle of 1.1mm

Orthogonal Magnetic

Field Strength

Bz

35

70

mT

System Specifications

Figure 8:

System Specifications

Symbol

Parameter

Conditions

Min

Typ

Max

Units

Core and resolution on

SPI

RES

14

bit

Programmable with

register setting

(ABIRES)

Resolution of the ABI

interface

RES_ABI

25

4096

0.8

steps

Non-linearity, optimum

placement of the

magnet

INL

@ 25°C

0.4

0.6

degree

OPT

Non-linearity, optimum

placement of magnet

and temperature -40°C

to 150°C

INL

1

degree

OPT+TEMP

Assuming N35H

Magnet

(D=8mm, H=3mm)

500μm displacement

in x and y

Non-linearity @

displacement of

magnet and

temperature -40°C to

150°C

INL

1.2

DIS+TEMP

z-distance = 2000μm

RMS output noise

Orthogonal

without filter (1 sigma)

on SPI, ABI, PWM and

UVW. Not tested,

component for the

magnetic field within

the specified range

(Bz), NOISESET= 0

ONL

ONH

0.034

0.041

0.068

degree

guaranteed by design

RMS output noise

Orthogonal

without filter (1 sigma)

on SPI, ABI, PWM and

UVW. Not tested,

component for the

magnetic field within

the specified range

(Bz), NOISESET = 1

0.082

110

degree

μs

guaranteed by design

System propagation

delay –core

t

Reading angle via SPI

90

delay

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AS5047U − Electrical Characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Units

Residual system

propagation delay after

dynamic angle error

correction

t

At ABI, UVW and SPI

-1.9

1.9

μs

delay_DAEC

Refresh time at

SPI(ANGLECOM), ABI,

UVW

Refresh time of DAEC

output

t

202

222

247

ns

refresh

At 1700 rpm constant

speed

DAE

Dynamic angle error

0.02

degree

1700

At 28000 rpm

constant speed

DAE

Dynamic angle error

Maximum speed

0.32

degree

rpm

max

MS

28000

Reference magnet: N35H, 8mm diameter; 3mm thickness.

Magnet in the Bz range.

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[v1-00] 2018-Oct-30

AS5047U − Timing Characteristics

Timing Characteristics

Figure 9:

Timing Specifications

Symbol

Parameter

Conditions

Min

Typ

Max Units

Guaranteed by design. Time between

t

VDD > VDD

and the first valid

Power-on time

10

ms

pon

min

outcome

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AS5047U − Detailed Description

The AS5047U is a Hall-effect magnetic sensor using a CMOS

technology. The Hall sensors convert the magnetic field

component perpendicular to the surface of the chip into

voltage.

Detailed Description

The signals from the Hall sensors are amplified and filtered by

the analog front-end (AFE) before being converted by the

analog-to-digital converter (ADC). The output of the ADC is

processed by the hardwired CORDIC (coordinate rotation

digital computer) block to compute the angle and magnitude

of the magnetic vector. The intensity of the magnetic field

(magnitude) used by the automatic gain control (AGC) to adjust

the amplification level for compensation of the temperature

and magnetic field variations.

The AS5047U generates continuously the angle information,

which can be requested by the different interfaces of the device.

The internal 14-bit resolution is available by readout register

via the SPI interface. The resolution on the ABI output can be

programmed for 10 to 14 bits.

The Dynamic Angle Error Compensation block corrects the

calculated angle regarding latency by using a linear prediction

calculation algorithm. At constant rotation speed the latency

time is internally compensated by the AS5047U, reducing the

dynamic angle error at the SPI, ABI and UVW outputs.

The adaptive filter block is implemented after the

compensation block and reduces the transition noise at low

rotation speed. The stable information is available on SPI, ABI

and UVW.

AS5047U allows selecting between a UVW output interface and

a PWM encoded interface on the W pin.

The non-volatile settings in the AS5047U is programmed

through the SPI interface without any dedicated programmer.

The AS5047U can support high-speed application up to

28krpm.

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AS5047U − Detailed Description

Power Management

The AS5047U can be either powered from a 5.0V supply using

the on-chip low-dropout regulator or from a 3.3V voltage

supply. The LDO regulator is not intended to power any other

loads, and it needs a 1μF capacitor to ground located close to

chip for decoupling as shown in Figure 11.

In 3.3.V operation, VDD and VREG shall connected together. In

this configuration, normal noise performance (ONL) is available

at reduced maximum temperature (125°C) by clearing

NOISESET to 0. When NOISESET is set to 1, the full temperature

range is available with reduced noise performance (ONH).

Figure 10:

Temperature Range and Output Noise Without Filtering in 3.3V and 5.0V Mode

VDD (V)

5.0

NOISESET

Temperature Range (°C)

-40 to 150

RMS Output Noise (degree)

0

1

0.068

0.082

3.3

-40 to 125

3.3

-40 to 150

Figure 11:

5.0V and 3.3V Power Supply Options

5.0V Operation

3.3 V Operation

VDD

GND

VDD3V3

3.0 – 3.6V

100nF

VDD

GND

LDO

VDD3V3

LDO

1uF

100nF

AS5ꢀ47U

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AS5047U − Detailed Description

Dynamic Angle Error Compensation

The AS5047U uses 4 integrated Hall sensors which produce a

voltage proportional to the orthogonal component of the

magnetic field to the die. These voltage signals are amplified,

filtered, and converted into the digital domain to allow the

CORDIC digital block to calculate the angle of the magnetic

vector. The propagation of these signals through the analog

front-end and digital back-end generates a fixed delay between

the time of measurement and the availability of the measured

angle at the outputs. This latency generates a dynamic angle

error represented by the product of the angular speed (ω) and

the system propagation delay (t

):

delay

(EQ1)

DAE = ω x t

delay

The dynamic angle compensation block calculates the current

magnet rotation speed (ω) and multiplies it with the system

propagation delay (t

) to determine the correction angle to

delay

reduce this error. At constant speed, the residual system

propagation delay is t

.

delay_DAEC

The angle represented on the PWM interface is not

compensated by the Dynamic Angle Error Compensation

algorithm. It is also possible to disable the Dynamic Angle Error

Compensation with the DAECDIS setting. Disabling the

Dynamic Angle Error Compensation gives a noise benefit of

0.016 degree rms. This setting can be advantageous for low

speed (under 100 RPM) respectively static positioning

applications.

Adaptive Filter System

The AS5047U uses an implemented adaptive filter system,

which reduces the transition noise.

The filter works dynamically depending on acceleration

(positive and negative acceleration) of rotating system. It is able

to match the right filter coefficients automatically.

The filter coefficients (K value), which define also the limits in

which the filters is acting, can be set in the OTP (K_min= 0x00

and K_max=0x00 by default).In addition, there is the possibility

to turn off the filter in the OTP.

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AS5047U − Detailed Description

Figure 12:

Noise vs K Values

K_min

K_max

0

1

2

3

4

5

6

Filter coefficient (K values)

For detailed application information please refer to the

Application Note: AS5x47U_Adaptive_Filter.

Figure 13:

K Value Configuration

K_min [LSB]

Minimum K Value

K_max [LSB]

Maximum K Value

000

001

010

011

100

101

110

111

2

3

4

5

6

0

1

000

001

010

011

100

101

110

111

6

5

4

3

5

1

0

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AS5047U − Detailed Description

Figure 14:

Adaptive Filter System Setting

Symbol

Parameter

Min

Typ

Max

Unit

Notes

Depending on K setting

in the OTP

fcorner

Corner frequency

48

3059

Hz

RMS noise (depending

on the selected K

setting)

ONFdyn

ONFstat

Noise during rotation

0.019

0.011

0.086

0.084

°

Noise when stand

still

Depending on K setting

in the OTP

Figure 15:

Corner Frequency vs Noise

fcorner

ONFdyn

ONFstat

K Value

Filter corner

frequency [Hz]

Noise during

rotation [degree]

Noise when stand still

[degree]

0

1

2

3

4

5

6

48

97

0.019

0.028

0.036

0.048

0.062

0.077

0.086

0.011

0.017

0.032

0.044

0.059

0.077

0.084

194

387

773

1548

3095

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AS5047U − Detailed Description

Speed Measurements

Rotation Speed Measurement

The AS5047U features an average angular velocity calculation

algorithm with 14-bit resolution. This angular velocity

information is available over SPI and can be used without

further averaging in the ECU.

Figure 16:

Angular Velocity Measurement Parameter

Symbol

Parameter

Min

Typ

Max

Unit

Notes

Velocity signal

resolution

Two's complement

value

V

14

bit

Res

Measurement range

(default)

V

-28000

28000

rpm

º/s/bit

%

Range

Velocity sensitivity

(default)

V

24.141

68.4

14-bit resolution

Sens

Based on actual

rotation speed

V

Velocity total error

Cut off frequency

5

Error

Depending on K value

(see adaptive filter

system)

F

16.9

231

Hz

Cutoff

Figure 17:

Angular Velocity Measurement Filter Parameters

Filter Setting

Typ

5.8

Unit

Notes

K=0

K=1

K=2

K=3

K=4

K=5

K=6

6

8.4

19.8

51.8

121.9

244.9

°/s

RMS noise

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AS5047U − Detailed Description

SPI Interface (Slave)

The SPI interface shall connected to a host microcontroller

(master) to read or write the volatile memory as well as to

program the non-volatile OTP registers.

The AS5047U SPI only supports slave operation mode. It

communicates at clock rates up to 10 MHz.

The AS5047U SPI uses mode=1 (CPOL=0, CPHA=1) to exchange

data. As shown in Figure 18, a data transfer starts with the

falling edge of CSn (CLK is low). The AS5047U samples MOSI

data on the falling edge of CLK. SPI commands are executed at

the end of the frame (rising edge of CSn). The bit order is MSB

first.

A CRC is protecting the SPI Data.

SPI Timing

The AS5047U SPI timing is shown in Figure 18.

Figure 18:

SPI Timing Diagram

t_CSn

CSn

(Input)

t_clk

t_clkH

t_clkL

t_L

t_H

CLK

(Input)

t_MISO

t_OZ

MISO

(Output)

Data[23]

Data[22]

Data[0]

t_OZ

t_MOSI

MOSI

(Input)

Data[23]

Data[22]

Data[0]

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AS5047U − Detailed Description

Figure 19:

SPI Timing

Parameter

Description

Time between CSn falling edge and CLK rising edge

Serial clock period

Min

Max

Units

ns

(1)

t

350

L

t

100

ns

clk

t

Low period of serial clock

50

ns

clkL

High period of serial clock

ns

clkH

Time between last falling edge of CLK and rising

edge of CSn

t

clk/2

ns

H

(1)

t

High time of SS/ between two transmissions

Data input valid to clock edge

ns

350

CSn

t

20

MOSI

MISO

CLK edge to data output valid

51

10

t

Time between CSn rising edge and MISO HiZ

OZ

Note(s):

^{1. Synchronization with the internal clock}→ 2 * t_{CLK_SYS}+ 10ns (e.g. at 9 MHz → 232ns)

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AS5047U − Detailed Description

SPI Transaction

AS5047U provides two different SPI transactions

• 16-bit SPI frame without CRC (for high throughput)

• 24-bit SPI frames with CRC

• 32-bit SPI frames with CRC. The 32-bit SPI frames includes

8-bit PAD word.

For high-throughput requirements, the AS5047U can handle

16-bit frames for read operations. This allows reading more than

400000 angle positions per second.

Figure 20:

16-Bit SPI Frame

CSn

15 14 13

0

R

ADDR[13:0]

MOSI

MSB

LSB

15 14 13

ER

0

RDATA[13:0]

MISO

MSB

LSB

Figure 21:

16-Bit Command Frame

Bit

15

Name

Description

0

Do not Care

1: Read

14

R

13:0

ADDR[13:0]

Address

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AS5047U − Detailed Description

Figure 22:

16-Bit Data Frame

Bit

15

Name

ER

Description

Warning Bit

Error Bit

Data

14

13:0

DATA[13:0]

24-Bit SPI frames and 32-Bit SPI frames have CRC for increased

reliability of communication over the SPI. A wrong setting of

the calculation / setting of the CRC causes a CRC error, which

sets the CRCERR bit in the error flag register.

Figure 23:

24-Bit SPI Frame

CSn

23

0

21

8 7

0

RW

ADDR[13:0]

CRC-8

MOSI

MISO

MSB

LSB

0

23 22 21

ER

RDATA[13:0]

MSB

LSB

Figure 24:

24-Bit Command Frame

Bit

Name

Description

23

0

Do not Care

0: Write

1: Read

22

RW

21:8

7:0

ADDR[13:0]

CRC

Address

Calculated CRC

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AS5047U − Detailed Description

Figure 25:

24-Bit Data Frame

Bit

23

Name

Description

Warning Bit

Error Bit

ER

22

21:8

7:0

DATA[13:0]

CRC

Data

Calculated CRC

The 32-Bit Frames have a PAD Word, which is applicable for

operation in daisy chain mode.

Figure 26:

32-Bit SPI Frame

CSn

31

23 22 21

8 7

0

RW

PAD[n-1:0]

ADDR[13:0]

CRC-8

MOSI

MSB

LSB

0

31 30 29

ER

16 15

RDATA[13:0]

CRC-8

PAD[n-1:0]

MISO

MSB

LSB

Figure 27:

32-Bit Command Frame

Bit

31:24

23

Name

PAD

0

Description

PAD Number

Do Not care

0: Write

1: Read

22

RW

21:8

7:0

ADDR[13:0]

CRC

Address

Calculated CRC

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AS5047U − Detailed Description

Figure 28:

32-Bit Data Frame

Bit

31

Name

Description

Warning Bit

Error Bit

ER

30

29:16

15:8

7:0

RW

ADDR[13:0]

CRC

Data

Calculated CRC

PAD Number

The data sent on the MISO pin. The CRC is calculated by the

AS5047U. If an error or a warning is detected in the previous SPI

command frame, the Error/Warning bit is set high. The SPI read

is synchronized on the rising edge of CSn and the data is

transmitted on MISO with the next read command, as shown in

Figure 29.

Figure 29:

SPI Read

CSn

Command

Read ADD[m]

Read ADD[n]

Read ADD[o]

Read ADD[p]

MOSI

MISO

Data

DATA (ADD[m])

DATA (ADD[n])

DATA (ADD[o])

Recommended CRC calculation see chapter CRC Checksum

In an SPI write transaction, the write command frame is

followed by a write data frame at MOSI. The write data frame

consists of the new content of register which address is in the

command frame. During the new content is transmitted on

MOSI by the write data frame, the old content is send on MISO.

At the next command on MOSI the actual content of the register

is transmitted on MISO, as shown in Figure 30.

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AS5047U − Detailed Description

Figure 30:

SPI Write

CSn

Command

Data to write into ADD[n]

Command

Data to write into ADD[m]

Command

DATA (x)

Write ADD[m]

DATA (y)

MOSI

MISO

command

New Data content

of ADD[n]

New Data content

of ADD[m]

Data content ADD[n]

Data content ADD[m]

DATA (ADD[n])

DATA (x)

DATA (ADD[m])

DATA (y)

PAD Word

Any number of PAD [8*n-1:0] bits can precede the MOSI data.

The PAD word is used to allocate the data on MISO to the correct

device.

CRC Checksum

For secure and reliable data transmission, the 24-Bit and 32-Bit

frames have a CRC for verification of correct transmission. The

CRC is calculated out of the payload of SPI frames (e.g.: CRC is

calculated out of bit 23:8 from 24-bit command frame)

The calculation of the CRC is based on Irreducible polynomial

x^8+x^4+x^3+x^2+1 according to standard J1850.

The initialization CRC = 0xFF prevents that 0x000000 is a valid

SPI command. This command would clear all sticky error flags.

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AS5047U − Detailed Description

Volatile Registers

The volatile registers are shown in Figure 31. Each register has

a 14-bit address.

Figure 31:

Volatile Memory Register Description

Address

0x0000

Name

NOP

Default

0x0000

Description

No operation

0x0001

ERRFL

PROG

Error register

0x0003

Programming register

0xX3C2 or 0xXBC2 for

3.3V mode

0xX3C3 or 0xXBC3 for

5 V mode

0x3FF5

DIA

DIAGNOSTIC

0x3FF9

0x3FFA

0x3FFB

0x3FFC

0x3FFD

AGC

Sin-data

Cos-data

VEL

0x0000

AGC Value

Raw digital sine channel data

Raw digital cosine channel data

Velocity

MAG

CORDIC magnitude

Measured angle without dynamic

angle error compensation

0x3FFE

0x3FFF

0x00D1

ANGLEUNC

ANGLECOM

0x0000

Measured angle with dynamic angle

error compensation

ECC checksum calculated based on

actual register setting

ECC_Checksum

Figure 32:

ERRFL (0x0001)

Name

Read/Write

Bit Position

Description

CORDIC

Overflow

R

10

Reading the Overflow Bit of the CORDIC

OffCompNotFi

nished

In case the flag is 1 the internal offset compensation

is not finished

R

9

8

Not used

N/A

No function. Bit Setting: 0

Watchdog information. In case the flag sets to 1, the

internal oscillator or the watchdog is not working

correctly

WDTST

R

7

6

CRC error

CRC error during SPI communication

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AS5047U − Detailed Description

Name

Read/Write

Bit Position

Description

Command_

error

R

5

4

3

SPI invalid command received

Framing error

P2ram_error

Framing if SPI communication wrong

ECC has detected 2 uncorrectable errors in P2RAM in

customer area

P2ram_

warning

R

2

1

ECC is correcting one bit of P2RAM in customer area

This flag sets to 1 in case the AGC Value reaches 255

LSB and the magnitude value is the half of the of the

regulated magnitude value (between AGC = 0LSB

and AGC = 255LSB) which is typical 4800LSB.

MagHalf

Agc-warning=1. The flag sets to 1 in case the AGC

Value reaches 0LSB or 255LSB. The detailed

information which level is reached can be found in

the diagnostic register.

Agc-warning

R

0

Reading the ERRFL register automatically clears its contents

(ERRFL=0x0000).

In case of an error flag, a read of the DIA register is mandatory.

Figure 33:

PROG (0x0003)

Name

PROGVER

PROGOTP

OTPREF

Read/Write

R/W

Bit Position

Description

Program verify: Must be set to 1 for verifying the

correctness of the OTP programming

6

3

2

R/W

Start OTP programming cycle

Refreshes the non-volatile memory content with the

OTP programmed content

R/W

Program OTP enable: Enables reading / writing the OTP

memory

PROGEN

R/W

0

The PROG register is used for programming the OTP memory.

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AS5047U − Detailed Description

Figure 34:

DIA(0x3FF5)

Name

SPI_cnt

Read/Write

Bit Position

Description

R

N/A

R

11:12

10

SPI frame counter

Not used

No function. Bit Setting: 0

Initial AGC settling finished

AGC_finished

9

Off comp

finished

R

8

Error flag offset compensation finished

SinOff_fin

CosOff_fin

R

7

6

5

4

3

2

1

Sine offset compensation finished

Cosine offset compensation finished

Error flag magnitude is below half of target value

Warning flag AGC high

MagHalf_flag

Comp_h

Comp_l

Warning flag AGC low

Cordic_overflow

LoopsFinished

Error flag CORDIC overflow

All Magneto Core loops finished

VDD supply mode:

0: VDD 3.3 Mode

1: VDD 5.0 Mode

Vdd_mode

R

0

Figure 35:

AGC(0x3FF9)

Description

Name

Read/Write

Bit Position

AGC

R

7:0

8-Bit AGC value

Figure 36:

VEL(0x3FFC)

Description

Name

Read/Write

Bit Position

Vel

R

13:0

Velocity value (14-bit signed integer)

Figure 37:

MAG (0x3FFD)

Description

Name

Read/Write

Bit Position

Mag

R

13:0

CORDIC magnitude information

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AS5047U − Detailed Description

Figure 38:

ANGLEUNC (0x3FFE)

Name

Read/Write

Bit Position

Description

Angle information without dynamic angle error

compensation

ANGLEUNC

R

13:0

Figure 39:

ECC_s (0x3FD0)

Name

Read/Write

Bit Position

Description

ECC_s

R

6:0

Calculated ECC checksum

Figure 40:

ANGLECOM(0x3FFF)

Name

Read/Write

Bit Position

Description

Angle information with dynamic angle error

compensation

ANGLECOM

R

13:0

Non-Volatile Registers (OTP)

The OTP (One-Time Programmable) memory is used to store the

absolute zero position of the sensor and the customer settings

permanently in the sensor IC. SPI write/read access is possible

several times for all non-volatile registers (soft write). Soft

written register content will be lost after a hardware reset. The

programming itself can be done just once. Therefore the

content of the non-volatile registers is stored permanently in

the sensor. The register content is still present after a hardware

reset and cannot be overwritten. For a correct function of the

sensor the OTP programming is not required. If no

configuration or programming is done, the non-volatile

registers are in the default state 0x0000.

Figure 41:

Non-Volatile Register Table

Address

0x0015

0x0016

0x0017

0x0018

Name

Default

0x0000

Description

Outputs and filter disable register

Zero position MSB

DISABLE

ZPOSM

ZPOSL

Zero position LSB/ MAG diagnostic

Custom setting register 1

SETTINGS1

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AS5047U − Detailed Description

Address

0x0019

Name

Default

0x0000

Description

SETTINGS2

SETTINGS3

ECC

Custom setting register 2

0x001A

0x001B

Custom setting register 3

ECC Settings

Figure 42:

DISABLE (0x0015)

Description

Name

Read/Write/Program

Bit Position

0: Normal mode (default)

1: Switch UVW output off (tristate)

UVW_off

RW

0

0: Normal mode (default)

1: Switch ABI output off (tristate)

ABI_off

na

RW

1

2:5

6

Default=0

0: Filter enabled (default)

1: Filter disabled

FILTER_disable

Figure 43:

ZPOSM (0x0016)

Description

Name

Read/Write/Program Bit Position

ZPOSM

R/W/P

7:0

8 most significant bits of the zero position

Figure 44:

ZPOSL (0x0017)

Name

Read/Write/Program Bit Position

Description

ZPOSL

R/W/P

5:0

6

6 least significant bits of the zero position

Default=0; only applicable for automotive

version AS5147U

Dia1_en

Dia2_en

Default=0; only applicable for automotive

version AS5147U

R/W/P

7

ams Datasheet

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AS5047U − Detailed Description

Figure 45:

SETTINGS1 (0x0018)

Name

K_max

K_min

Read/Write/Program Bit Position

Description

R/W/P

2:0

5:3

K max for adaptive filter setting

K min for adaptive filter setting

Default=0; only applicable for automotive

version AS5147U

Dia3_en

Dia4_en

R/W/P

6

7

Default=0; only applicable for automotive

version AS5147U

Figure 46:

SETTINGS2 (0x0019)

Name

Read/Write/Program Bit Position

Description

0: 3 pulses

1: 1 pulses

IWIDTH

R/W/P

0

NOISESET

DIR

R/W/P

1

2

Noise setting for 3.3V operation at 150°C

Rotation direction

Defines the PWM output

UVW_ABI

R/W/P

3

(0=ABI is operating, W is used as PWM)

(1=UVW is operating, I is used as PWM)

Disable dynamic angle error compensation

(0=DAE compensation ON,

1=DAE compensation OFF)

DAECDIS

ABI_DEC

R/W/P

4

5

ABI setting to decimal count

This bit defines which data can be read from

address 16383dec (3FFFhex)

0-> ANGLECOM

Data_select

PWMon

R/W/P

6

7

1-> ANGLEUNC

Enables PWM (setting of UVW_ABI bit

necessary)

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AS5047U − Detailed Description

Figure 47:

SETTINGS3 (0x001A)

Name

UVWPP

HYS

Read/Write/Program Bit Position

Description

R/W/P

2:0

4:3

7:5

UVW number of pole pairs

Hysteresis

ABIRES

Resolution of ABI

Figure 48:

ECC (0x001B)

Read/Write/

Program

Bit

Position

Name

Description

ECC_chsum

ECC_en

R/W/P

6:0

7

ECC checksum

Enables ECC

ams Datasheet

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AS5047U − Detailed Description

ABI Incremental Interface

The AS5047U can send the angle position to the host

microcontroller through an incremental interface. This

interface is available simultaneously with the other interfaces.

By default, the incremental interface is set to work at a 12-bit

resolution which corresponds to 4096 steps per revolution or

1024 pulses per revolution (ppr). This resolution can be

changed with the OTP bits ABIRES. The phase shift between the

A and B signals indicates the rotation direction: clockwise (A

leads, B follows) or counterclockwise (B leads, A follows). During

the start-up time, after power on to the chip, all three ABI signals

are high. The DIR bit can be used to invert the sense of the

rotation direction.

The IWIDTH setting programs the width of the index pulse from

3 LSB (default) to 1 LSB.

Figure 49:

ABI Signals

A

B

I

N-7 N-6 N-5 N-4 N-3 N-2 N-1

0

1

2

3

4

5

6

7

8

7

6

5

4

3

2

1

0 N-1 N-2 N-3 N-4

Steps

Clockwise rotation

Counter-clockwise rotation

N= 16384 for 14-Bit resolution, N = 4096 for 12-bit resolution

and N = 1024 for 10-bit resolution..

The Figure 49 shows the ABI signal flow if the magnet rotates

in clockwise direction and counter-clockwise direction (DIR=0).

The rotation direction of the magnet is defined as clockwise

(DIR=0) when the view is from the topside of AS5047U.

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AS5047U − Detailed Description

Figure 50:

ABI Settings

ABIRES [LSB]

SETTINGS3

(0x001A)

ABI_DEC

SETTINGS2

(0x0019)

ABI_Pulses

ABI Resolution [LSB]

100

011

000

001

010

000

001

010

011

100

101

110

111

0

1

4096

2048

1024

512

256

1000

500

400

300

200

100

50

16384

8192

4096 (default value)

2048

1024

4000

2000

1600

1200

800

400

200

25

100

ams Datasheet

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AS5047U − Detailed Description

UVW Commutation Interface

The AS5047U can emulate the UVW signals generated by the

three discrete Hall switches commonly used in BLDC motors.

The UVWPP field in the SETTINGS3 register selects the number

of pole pairs of the motor (from 1 to 7 pole pairs). The UVW

signals are generated based on14-bit core resolution.

During the start-up time, after power on of the chip, the UVW

signals are low.

Figure 51:

UVW Signals

U

V

W

angle 0°

60°

120°

180°

240°

300°

360°

360° 300°

240°

180°

120°

60°

0°

Clockwise rotation

Counter-clockwise rotation

The Figure 51 shows the UVW signal flow if the magnet rotates

in clockwise direction and counter-clockwise direction (DIR=0).

The rotation direction of the magnet is defined as clockwise

(DIR=0) when the view is from the topside of AS5047U. With the

bit DIR, it is possible to invert the rotation direction.

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AS5047U − Detailed Description

Figure 52:

UVW Settings

UVWPP [LSB]

Pole Pairs

1pp (default)

2pp

000

001

010

011

100

101

110

111

3pp

4pp

5pp

6pp

7pp

ams Datasheet

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AS5047U − Detailed Description

PWM

The PWM can be enabled with the bit setting PWMon. The PWM

encoded signal is displayed on the pin W or the pin I. The bit

setting UVW_ABI defines which output is used as PWM. The

PWM output consists of a frame of 4119 PWM clock periods, as

shown in Figure 53. The PWM frame has the following sections:

• 12 PWM clock periods for INIT

• 4 PWM clock periods for error detection

• 4095 PWM clock periods of data

• 8 PWM clock periods low

The angle is represented in the data part of the frame with a

12-bit resolution. One PWM clock period represents 0.088

degree and has a typical duration of 444 ns.

If the embedded diagnostic of the AS5047U detects any error

the PWM interface displays only 12 clock periods high

(0.3% duty-cycle). Respectively the 4 clocks for error detection

are forced to low.

Figure 53:

Pulse Width Modulation Encoded Signal

frame

4 clock

time

12 clock periods periods

4095 clock periods

data

8 clock periods

low

high

Error

detection

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AS5047U − Detailed Description

Hysteresis

The hysteresis can be programmed in the HYS bits of the

SETTINGS3 register. The hysteresis can be 1, 2, or 3 LSB bits,

based on 11-bit resolution.

Figure 54:

Hysteresis Settings

Hysteresis Related to 11-Bit

HYS

ABI Resolution

00

01

10

11

1

2

3

0

Automatic Gain Control (AGC) and CORDIC

Magnitude

The AS5047U uses AGC to compensate for variations in the

magnetic field strength due to changes of temperature, air gap

between the chip and the magnet, and demagnetization of the

magnet. The automatic gain control value can be read in the

AGC field of the AGC register. Within the specified input

magnetic field strength (Bz), the Automatic Gain Control keeps

the CORDIC magnitude value (MAG) constant.

If magnetic field strength is out of specifications, the AGC has

its limits reached and the Agc-warning bit is set. When the

magnetic field strength is decreasing more then AGC can

control, the CORDIC magnitude is also decreasing.

If the CORDIC magnitude decreases lower than half of the target

magnet, the error flag MagHalf_flag is set.

ams Datasheet

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AS5047U − Detailed Description

ECC

The ECC (Error Code Correction) is a mechanism which protects

the customer settings.

The ECC protection is active whenever ECC_en=1. ECC_en is the

error corrected counterpart of the P2RAM bit en and is found

in register ECC_STATUS. Whenever a bit error occurs, this is

reported by the status register ERRFL [2:3]. Single bit errors are

corrected immediately and do not influence the correct

operation of the sensor. If either a single or double errors are

detected, the next SPI MISO frame will report this to the

software by setting flags error=1 (double bit error) or

warning=1 (single bit error). Warning and error are sticky flags,

which guarantees that spurious P2RAM errors are certainly

reported.

The ECC Protection is activated with the following steps:

• Writing uses data into the register and set ECC_en to high.

• Reading ECC_s from register 0x3FD0 and set the value into

ECC_chsum. Do not overwrite the ECC_en

• Programming the part.

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AS5047U − Application Information

Application Information

Burn and Verification of the OTP Memory

Figure 55:

Minimum Programming Diagram for the AS5047U with 5V Supply Voltage

VDD during programming 4.5 – 5.5V

VDD

I

CSn

CLK

GND

MISO

VDD3V

MOSI

TEST

A

VDD

U

Programmer

V

100nF

1μF

B

W

GND

Note(s):

1. In terms of EMC and for remote application, additional circuits are necessary.

ams Datasheet

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Document Feedback

AS5047U − Application Information

Figure 56:

Minimum Programming Diagram for the AS5047U with 3.3V Supply Voltage

VDD during programming: 3.3V – 3.5V

VDD

I

CSn

CLK

GND

VDD3V

MISO

MOSI

VDD

U

TEST

Programmer

A

V

100nF

B

W

GND

Note(s):

1. In terms of EMC and for remote application, additional circuits are necessary.

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AS5047U − Application Information

Figure 57:

Programming Parameter

Symbol

Parameter

Conditions

Min

Typ

Max

Units

Programming @ Room

Temperature

(25°C 20°C)

Programming

temperature

T

5

45

°C

aProg

Positive supply

voltage

5 V operation mode. Supply

voltage during programming

V

4.5

3.3

5

5.5

3.5

V

DD

Positive supply

voltage

3.3 V operation mode. Supply

voltage during programming

V

DD

Current for

programming

Max current during OTP burn

procedure.

I

100

mA

Prog

Note(s):

1. Programming parameter valid for AS5047U.

Step-by-Step Procedure to Permanently

Program the Non-Volatile Memory (OTP):

The programming can either be performed in 5V operation

using the internal LDO (1μF on regulator output pin), or in 3V

Operation but using a supply voltage between 3.3V and 3.5V.

1. Power on cycle

2. Write the SETTINGS1 and SETTINGS2 and SETTINGS3

registers with the Custom settings for this application

3. Place the magnet at the desired zero position

4. Read out the measured angle from the ANGLECOM

register

5. Write ANGLECOM [5:0] into the ZPOSL register and

ANGLECOM[13:6] into the ZPOSM register

6. Read reg(0x0016) to reg(0x001A)

7. Set ECC_en in Register ECC to 1 (ECC protection

enabled)

8. Read ECC_s (0x3FD0) to get the correct ECC key

9. Write ECC_s key into ECC register

10. Read reg(0x0016) to reg(0x001B) → read register step1

11. Comparison of written content (settings and angle) with

content of read register step1

12. If point 11 is correct, enable OTP read / write by setting

PROGEN = 1 in the PROG register

13. Start the OTP burn procedure by setting PROGOTP = 1

in the PROG register

14. Read the PROG register until it reads 0x0001

(Programming procedure complete)

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AS5047U − Application Information

15. Clear the memory content by writing 0x00 in the whole

non-volatile memory

16. Set the PROGVER = 1 to set the Guard band for the guard

1

band test.

17. Refresh the non-volatile memory content with the OTP

content by setting OTPREF = 1

18. Read reg(0x0016) to reg(0x001B) → read register step2

19. Comparison of written content (settings and angle) with

content of read register step2. If a deviation in the

comparison occurs, the guard band test was not

successful. Reprogramming is not allowed!

Mandatory: guard band test

20. New power on cycle.

21. Read reg(0x0016) to Reg(0x001B) → read register step3

22. Comparison of written content (settings and angle) with

content of read register step3. If a deviation in the

comparison occurs, the power on test was not

successful. Reprogramming is not allowed!

23. If point 18 is correct, the programming was successful.

1. Guard band test:

Restricted to temperature range: 25 °C 20 °C

Right after the programming procedure (max. 1 hour with same conditions 25°C 20 °C), same VDD voltage.

The guard band test is only for the verification of the burned OTP fuses during the programming sequence.

A use of the guard band in other cases is not allowed.

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AS5047U − Application Information

Figure 58:

OTP Memory Burn and Verification Flowchart

Read

Reg(0x0003)

Read OTP_CTRL

Power on cycle

START

FAIL

Write

OTP burning procedure

complete if

Reg(0x0003)==0x01

Write

Reg(0x0015)

Reg(0x0018)

Reg(0x0019)

Reg(0x001A)

Reg(0x0003)==0x01

DISABLE,SETTINGS1,

SETTINGS2 and

SETTINGS3 register

Write

Reg(0x0015)=0x00

Reg(0x0016)=0x00

Reg(0x0017)=0x00

Reg(0x0018)=0x00

Reg(0x0019)=0x00

Reg(0x001A)=0x00

Reg(0x001B)=0x00

Turn magnet to the

Set magnet to the zero

position

Clear memory

Set Guardband

prospective Zero Position

Read

Reg(0x3FFF)

Write

Reg(0x0003)=0x40

Read ANGLECOM

Refresh memory with OTP

content

Write

Reg(0x0003)=0x04

Write

Write Angle into ZPOSL

and ZPOSM

Reg(0x0017(5:0))=Reg(0x3FFF(5:0))

Reg(0x0016(7:0))=Reg(0x3FFF(13:6))

Read

Reg(0x0015)

Reg(0x0016)

Reg(0x0017)

Reg(0x0018)

Reg(0x0019)

Reg(0x001A)

Reg(0x001B)

Read

Reg(0x0015)

Reg(0x0016)

Reg(0x0017)

Reg(0x0018)

Reg(0x0019)

Reg(0x001A)

Read Register step 2

Read Reg(0x0015) to

Reg(0x001A)

Comparison of written

content

Write

(DISABLE,SETTINGS1,

SETTINGS2, SETTINGS3,

ZPOSM, ZPOSL and ECC) with

content of Read Register

step 2.

Write ECC_EN

Reg(0x001B)=0x80

Verify 3

FAIL

Read

Reg(0x3FD0)

Read ECC Value

PASS

Mandatory Guardband-Test

Write ECC (do not

overwrite ECC-en)

Write

Reg(0x001B)

Power-on Reset

Read

Reg(0x0015)

Reg(0x0016)

Reg(0x0017)

Reg(0x0018)

Reg(0x0019)

Reg(0x001A)

Reg(0x001B)

Read Registers step 1

(DISABLE,SETTINGS1,

SETTINGS2, SETTINGS3,

ZPOSM, ZPOSL and ECC)

Reg(0x0015)

Reg(0x0016)

Reg(0x0017)

Reg(0x0018)

Reg(0x0016)

Read Register step 3

Comparison of written

content

(DISABLE,SETTINGS1,

SETTINGS2, SETTINGS3,

ZPOSM, ZPOSL and ECC) with

content of Read Register

step 3

Comparison of written

content

(DISABLE,SETTINGS1,

SETTINGS2, SETTINGS3,

ZPOSM, ZPOSL and ECC)

with Read Register step 1

read content

Verify 4

FAIL

Verify 1

FAIL

PASS

END

Correct

programming

and verification.

END

Wrong

programming.

Reprogramming

not allowed!

Unlock OTP area for

burning

Write

Reg(0x0003)=0x01

(PROGEN=1)

Start OTP burning

procedure

Write

Reg(0x0003)=0x08

(PROGOTP=1)

Note(s):

1. Device with wrong programming must not be used. Scrapping mandatory.

ams Datasheet

[v1-00] 2018-Oct-30

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AS5047U − Application Information

Circuit Diagram

Figure 59:

Minimum Circuit Diagram for the AS5047U

VDD during programming 4.5 – 5.5V

VDD

I

CSn

CLK

GND

VDD3V

MISO

MOSI

TEST

A

VDD

U

Programmer

V

100nF

1μF

B

W

GND

Note(s):

1. In terms of EMC and for remote application, additional protection circuit is necessary.

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AS5047U − Package Drawings & Markings

Package Drawings & Markings

Figure 60:

Package Outline Drawing AS5047U

RoHS

Green

Symbol

Min

-

Nom

Max

1.20

0.15

1.05

0.30

0.20

5.10

-

Symbol

R

Min

Nom

-

Max

A

A1

A2

b

-

0.09

-

0.05

0.80

0.19

0.09

4.90

-

R1

0.09

-

1.00

-

S

0.20

-

Θ1

0º

-

8º

-

c

-

Θ2

12 REF

0.10

0.05

0.20

14

D

5.00

6.40 BSC

4.40

0.65 BSC

0.60

1.00 REF

Θ3

-

E

aaa

bbb

ccc

ddd

N

-

E1

e

4.30

-

4.50

-

L

0.45

-

0.75

-

L1

Note(s):

1. Dimensioning and tolerancing conform to ASME Y14.5M - 1994.

2. All dimensions are in millimeters. Angles are in degrees.

3. N is the total number of terminals.

ams Datasheet

[v1-00] 2018-Oct-30

Page 43

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AS5047U − Package Drawings & Markings

Figure 61:

AS5047U Package Marking

AS5047U

YYWWMZZ

@

Figure 62:

Packaging Code

YY

WW

M

ZZ

@

Last two digits of the

manufacturing year

Free choice /

traceability code

Manufacturing week

Plant identifier

Sublot identifier

Page 44

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AS5047U − Mechanical Data

Mechanical Data

Figure 63:

TSSOP14 Die Placement and Hall Array Position

0.306 0.100

2.130 0.235

Hall radius

0.236 0.100

0.694 0.150

Note(s):

1. Dimensions are in mm.

2. The Hall array center is located in the center of the IC package. Hall array radius is 1.25mm.

3. Die thickness is 203ꢀm nominal.

ams Datasheet

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AS5047U − Ordering & Contact Information

Ordering&ContactInformation

Figure 64:

Ordering Information

Ordering

Package

Code

Delivery

Marking

Delivery Form

Quantity

500 pcs/reel

4500 pcs/reel

AS5047U-HTSM

AS5047U-HTST

TSSOP14

AS5047U

7” Tape & Reel in dry pack

13” Tape & Reel in dry pack

Buy our products or get free samples online at:

www.ams.com/Products

Technical Support is available at:

www.ams.com/Technical-Support

Provide feedback about this document at:

www.ams.com/Document-Feedback

For further information and requests, e-mail us at:

ams_sales@ams.com

For sales offices, distributors and representatives, please visit:

www.ams.com/Contact

Headquarters

ams AG

Tobelbader Strasse 30

8141 Premstaetten

Austria, Europe

Tel: +43 (0) 3136 500 0

Website: www.ams.com

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amsDatasheet

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AS5047U − RoHS Compliant & ams Green Statement

RoHS: The term RoHS compliant means that ams AG products

fully comply with current RoHS directives. Our semiconductor

products do not contain any chemicals for all 6 substance

categories, including the requirement that lead not exceed

0.1% by weight in homogeneous materials. Where designed to

be soldered at high temperatures, RoHS compliant products are

suitable for use in specified lead-free processes.

RoHS Compliant & ams Green

Statement

ams Green (RoHS compliant and no Sb/Br): ams Green

defines that in addition to RoHS compliance, our products are

free of Bromine (Br) and Antimony (Sb) based flame retardants

(Br or Sb do not exceed 0.1% by weight in homogeneous

material).

Important Information: The information provided in this

statement represents ams AG knowledge and belief as of the

date that it is provided. ams AG bases its knowledge and belief

on information provided by third parties, and makes no

representation or warranty as to the accuracy of such

information. Efforts are underway to better integrate

information from third parties. ams AG has taken and continues

to take reasonable steps to provide representative and accurate

information but may not have conducted destructive testing or

chemical analysis on incoming materials and chemicals. ams AG

and ams AG suppliers consider certain information to be

proprietary, and thus CAS numbers and other limited

information may not be available for release.

ams Datasheet

Page 47

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AS5047U − Copyrights & Disclaimer

Copyright ams AG, Tobelbader Strasse 30, 8141 Premstaetten,

material herein may not be reproduced, adapted, merged,

translated, stored, or used without the prior written consent of

the copyright owner.

Copyrights & Disclaimer

Devices sold by ams AG are covered by the warranty and patent

indemnification provisions appearing in its General Terms of

Trade. ams AG makes no warranty, express, statutory, implied,

or by description regarding the information set forth herein.

ams AG reserves the right to change specifications and prices

at any time and without notice. Therefore, prior to designing

this product into a system, it is necessary to check with ams AG

for current information. This product is intended for use in

commercial applications. Applications requiring extended

temperature range, unusual environmental requirements, or

high reliability applications, such as military, medical

life-support or life-sustaining equipment are specifically not

recommended without additional processing by ams AG for

each application. This product is provided by ams AG “AS IS”

and any express or implied warranties, including, but not

limited to the implied warranties of merchantability and fitness

for a particular purpose are disclaimed.

ams AG shall not be liable to recipient or any third party for any

damages, including but not limited to personal injury, property

damage, loss of profits, loss of use, interruption of business or

indirect, special, incidental or consequential damages, of any

kind, in connection with or arising out of the furnishing,

performance or use of the technical data herein. No obligation

or liability to recipient or any third party shall arise or flow out

of ams AG rendering of technical or other services.

The Hardware was developed in the domain of SEooC (Safety

Element out of Context) using ams best system know how. The

final system or target application is not known to ams AG. This

implies, that ams AG does not guarantee for a system functional

safety concept. The final responsibility for achieving a certain

ASIL (Automotive Safety Integrity Level) in the target

application is the responsibility of the system integrator.

Page 48

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AS5047U − Document Status

Document Status

Product Status

Definition

Information in this datasheet is based on product ideas in

the planning phase of development. All specifications are

design goals without any warranty and are subject to

change without notice

Product Preview

Pre-Development

Information in this datasheet is based on products in the

design, validation or qualification phase of development.

The performance and parameters shown in this document

are preliminary without any warranty and are subject to

change without notice

Preliminary Datasheet

Datasheet

Pre-Production

Production

Information in this datasheet is based on products in

ramp-up to full production or full production which

conform to specifications in accordance with the terms of

ams AG standard warranty as given in the General Terms of

Trade

Information in this datasheet is based on products which

conform to specifications in accordance with the terms of

ams AG standard warranty as given in the General Terms of

Trade, but these products have been superseded and

should not be used for new designs

Datasheet (discontinued)

Discontinued

ams Datasheet

Page 49

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AS5047U − Revision Information

Revision Information

Changes from 0-07 (2018-Sep-12) to current revision 1-00 (2018-Oct-30)

Page

Updated figure 27

20

Note(s):

1. Page and figure numbers for the previous version may differ from page and figure numbers in the current revision.

2. Correction of typographical errors is not explicitly mentioned.

Page 50

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AS5047U − Content Guide

1

2

General Description

Key Benefits & Features

Applications

Content Guide

Block Diagram

3

5

Pin Assignment

Absolute Maximum Ratings

6

7

Electrical Characteristics

Magnetic Characteristics

System Specifications

9

Timing Characteristics

10 Detailed Description

11 Power Management

12 Dynamic Angle Error Compensation

12 Adaptive Filter System

15 Speed Measurements

15 Rotation Speed Measurement

16 SPI Interface (Slave)

16 SPI Timing

18 SPI Transaction

22 PAD Word

22 CRC Checksum

23 Volatile Registers

26 Non-Volatile Registers (OTP)

30 ABI Incremental Interface

32 UVW Commutation Interface

34 PWM

35 Hysteresis

35 Automatic Gain Control (AGC) and CORDIC Magnitude

36 ECC

37 Application Information

37 Burn and Verification of the OTP Memory

39 Step-by-Step Procedure to Permanently Program the

Non-Volatile Memory (OTP):

42 Circuit Diagram

43 Package Drawings & Markings

45 Mechanical Data

46 Ordering & Contact Information

47 RoHS Compliant & ams Green Statement

48 Copyrights & Disclaimer

49 Document Status

50 Revision Information

ams Datasheet

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型号：	AS5047U
厂家：	AMS(艾迈斯)
描述：	14-Bit On-Axis Magnetic Rotary Position Sensor with Up to 14-Bit Binary Incremental Pulse Count
文件：	总51页 (文件大小：788K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

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