austriamicrosystems AG is now ams AG The technical content of this austriamicrosystems datasheet is still valid. Contact information: Headquarters: ams AG Tobelbaderstrasse 30 8141 Unterpremstaetten, Austria Tel: +43 (0) 3136 500 0 e-Mail: [email protected] Please visit our website at www.ams.com Datasheet AS5134 360 Step Programmable High Speed Magnetic Rotary Encoder 1 General Description Two digital 360 step (8.5 bit) absolute outputs: Serial interface The AS5134 is a contactless magnetic rotary encoder for accurate angular measurement over a full turn of 360º. It is a system-on-chip, combining integrated Hall elements, analog front-end and digital signal processing in a single device. User programmable zero position and sensitivity High speed: up to 76875 rpm al id and Pulse width modulated (PWM) output Direct measurement of magnetic field strength allows exact determination of vertical magnet distance To measure the angle, only a simple two-pole magnet, rotating over the center of the chip is required. The absolute angle measurement provides instant indication of the magnet’s angular position with a resolution of 8.5 bit = 360 positions per revolution. This digital data is available as a serial bit stream and as a PWM signal. In addition to the angle information, the strength of the magnetic field is also available as a 6-bit code. Incremental Outputs ABI Quadrature: 90 ppr, step direction: lv 180ppr, fixed pulse width 360ppr BLDC Outputs UVW, selectable for 1,2,3,4,5,6 pole pairs Daisy-Chain mode for cascading of multiple sensors am lc s on A te G nt st il 9-bit multi turn counter Data transmission can be configured for 1-wire (PWM), 2-wires (DCLK, DIO) or 3-wires (DCLK, DIO, CS). Low power mode with fast A software programmable (OTP) zero position simplifies assembly as the zero position of the magnet does not need to be mechanically aligned. Wide temperature range: -40ºC to +140ºC startup Wide magnetic field input range: 20- 80 mT Fully automotive qualified to AEC-Q100 A Power Down Mode together with fast startup and measurement cycles allows a very low average power consumption. Small Pb-free package: SSOP 20 3 Applications 2 Key Features The AS5134 is suitable for contactless rotary position sensing, rotary switches (human machine interface), AC/DC motor position control and Brushless DC motor position control. 360º contactless angular position encoding Figure 1. AS5134 Magnetic Rotary Encoder Block Diagram U V W ca VDD 5 V Te ch ni Commutation Interface Hall Array & Frontend Amplifier A B Index Incremental Interface Tracking ADC & Angle Decoder PWM Decoder Zero Pos. Angle AS5134 AGC AGC Power Management Multiturn Counter DIO Absolute Serial Interface (SSI) Mag PWM CS CLK C2 DX OTP PROG GND www.austriamicrosystems.com/AS5134 Revision 2.3 1 - 32 AS5134 Datasheet - C o n t e n t s Contents 1 2 Key Features............................................................................................................................................................................. 1 3 Applications............................................................................................................................................................................... 1 4 Pin Assignments ....................................................................................................................................................................... 3 4.1 Pin Descriptions.................................................................................................................................................................................... 3 al id 1 General Description .................................................................................................................................................................. 5 Absolute Maximum Ratings ...................................................................................................................................................... 4 6 Electrical Characteristics........................................................................................................................................................... 5 6 7 7.1 Connecting the AS5134........................................................................................................................................................................ 7 7.2 Serial 3-Wire R/W Connection.............................................................................................................................................................. 8 7.3 Serial 3-Wire Read-only Connection .................................................................................................................................................... 9 7.4 Serial 2-Wire Connection (R/W Mode) ............................................................................................................................................... 10 7.5 Serial 2-Wire Differential SSI Connection........................................................................................................................................... 11 7.6 1-Wire PWM Connection .................................................................................................................................................................... 12 7.7 Analog Output..................................................................................................................................................................................... 14 am lc s on A te G nt st il lv 6.1 Timing Characteristics .......................................................................................................................................................................... 7 Detailed Description.................................................................................................................................................................. 7.8 Quadrature A/B/Index Output ............................................................................................................................................................. 14 7.9 Brushless DC Motor Commutation Mode ........................................................................................................................................... 15 7.10 Daisy Chain Mode ............................................................................................................................................................................ 15 7.11 Serial Synchronous Interface (SSI) .................................................................................................................................................. 18 7.12 Redundancy ..................................................................................................................................................................................... 8 Application Information ........................................................................................................................................................... 20 21 8.1 AS5134 Programming ........................................................................................................................................................................ 21 8.1.1 OTP Programming Connection.................................................................................................................................................. 21 8.1.2 Programming Verification .......................................................................................................................................................... 22 8.2 AS5134 Status Indicators ................................................................................................................................................................... 24 8.2.1 Lock Status Bit........................................................................................................................................................................... 24 8.2.2 Magnetic Field Strength Indicators ............................................................................................................................................ 24 25 8.4 High Speed Operation ........................................................................................................................................................................ 25 ca 8.3 Multi Turn Counter.............................................................................................................................................................................. ni 8.4.1 Propagation Delay ..................................................................................................................................................................... 25 8.4.2 Digital Readout Rate.................................................................................................................................................................. 26 8.4.3 Low Power Mode ....................................................................................................................................................................... 26 9 Package Drawings and Markings ........................................................................................................................................... 27 ch 9.1 Recommended PCB Footprint............................................................................................................................................................ 29 31 Te 10 Ordering Information............................................................................................................................................................. www.austriamicrosystems.com/AS5134 Revision 2.3 2 - 32 AS5134 Datasheet - P i n A s s i g n m e n t s 4 Pin Assignments Figure 2. Pin Assignments (Top View) Prog 1 20 VSS 2 19 TB2 DX 3 18 TB1 CS 4 C2 5 PWM 6 VDD 7 TestCoil DCLK 15 B 14 A 8 13 W 9 12 V am lc s on A te G nt st il lv TB0 Index AS5134 17 16 al id TB3 DIO 11 10 U 4.1 Pin Descriptions Table 1. Pin Descriptions Pin Name Pin Number Description Programming voltage input, must be left open in normal operation. Maximum load = 20pF (except during programming) 2 Supply ground 3 Chip select output for 2-wire mode and Daisy Chain cascading 4 Chip select input for 3-wire mode 5 Select between 2-wire (C2 VDD) and 3-wire (C2 VSS) mode 6 PWM output 7 Positive supply voltage (double bond to VDD_A and VDD_D) 8 Test pin 9 Clock input for serial interface 10 Data I/O for serial interface 11 Commutation output 12 Commutation output W 13 Commutation output A 14 Incremental output B 15 Incremental output Index 16 Incremental output TB0 17 Test pin TB1 18 Test pin TB2 19 Test pin TB3 20 Test pin VSS DX CS C2 PWM VDD Test Coil DDCLK U Te ch V ni DIO ca 1 Prog www.austriamicrosystems.com/AS5134 Revision 2.3 3 - 32 AS5134 Datasheet - A b s o l u t e M a x i m u m R a t i n g s 5 Absolute Maximum Ratings Stresses beyond those listed in Table 2 may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in Electrical Characteristics on page 5 is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Table 2. Absolute Maximum Ratings Min Max Units Comments Except during OTP programming Electrical Parameters al id Parameter -0.3 7 V VSS-0.5 VDD V Input Current (latch up immunity), (Iscr) -100 100 mA Norm: EIA/JESD78 ClassII Level A ±2 kV Norm: JESD22-A114E 150 ºC Electrostatic Discharge ESD Temperature Ranges and Storage Conditions -55 am lc s on A te G nt st il Storage Temperature (Tstrg) lv Supply voltage (VDD) Input Pin Voltage (VIN) Body temperature, (Tbody) Humidity non-condensing 5 ºC 85 % 3 Represents a maximum floor time of 168h Te ch ni ca Moisture Sensitive Level (MSL) 260 The reflow peak soldering temperature (body temperature) specified is in accordance with IPC/ JEDEC J-STD-020 “Moisture/Reflow Sensitivity Classification for Non-Hermetic Solid State Surface Mount Devices”. The lead finish for Pb-free leaded packages is matte tin (100% Sn). www.austriamicrosystems.com/AS5134 Revision 2.3 4 - 32 AS5134 Datasheet - E l e c t r i c a l C h a r a c t e r i s t i c s 6 Electrical Characteristics TAMB = -40 to 140ºC, VDD5V = 4.5-5.5V, all voltages referenced to VSS, unless otherwise noted. Table 3. Electrical Characteristics Parameter VDD Positive Supply Voltage Conditions Min Typ 4.5 IDD Operating Current No load on outputs. Supply current can be reduced by using stronger magnets. Ioff Power down current Low Power Mode 70 System Parameters TPwrUp Power Up Time ts Tracking rate INLcm 8.5 1 V 22 mA 120 µA Bit Deg 4100 Startup from zero 500 Startup from Low Power mode Step rate of tracking ADC; 1 step = 1º Accuracy INLdm +5.5 lv Resolution Units µs 5.2 µs/step am lc s on A te G nt st il N Max al id Symbol Centered Magnet -2 2 Deg Within horizontal displacement radius -3 3 Deg tdelay Propagation delay Internal signal processing time 22 µs TN Transition noise Peak-Peak 1.41 Deg Bi Magnetic Input Range Required vertical component of the magnetic field strength on the chip surface, measured along a concentric circle with a radius of 1 mm 80 mT Vi Magnet rotation speed to maintain locked state 76875 rpm Magnet Specifications PWM Output tPWM PWM period fPWM PWM frequency Programming Parameters 20 600 750 900 µs 1 / PWM period 1.11 1.33 1.66 kHz Static voltage at pin Prog 8.0 8.5 V Programming Voltage TambPROG Programming ambient temperature During programming 0 85 ºC tPROG Programming time Timing is internally generated 2 4 µs VR,unprog Analog readback voltage ni VR,prog ca VPROG During analog readback mode at pin Prog 0.5 2 3.5 V ch Hall Element Sensitivity Options Hall Element sensitivity setting Te sens sens = 00 (default) 1.60 1.65 1.75 sens = 01 1.79 1.88 1.98 sens = 10 2.01 2.11 2.22 sens = 11 2.23 2.35 2.47 X DC Characteristics of Digital Inputs and Outputs CMOS Inputs: DDCLK, CS, DIO, C2 VIH High level input voltage 0.7*VDD VDD V VIL Low level input voltage 0 0.3*VDD V ILEAK Input leakage current 1 µA www.austriamicrosystems.com/AS5134 Revision 2.3 5 - 32 AS5134 Datasheet - E l e c t r i c a l C h a r a c t e r i s t i c s Table 3. Electrical Characteristics (Continued) Symbol Parameter Conditions VOH High level output voltage Source current < 4mA VOL Low level output voltage Sink current < 4mA CL Capacitive load Min Typ Max Units VDD-0.5 VDD V 0 VSS+0.4 V 35 pF al id CMOS Outputs: DIO, PWM, DX CMOS Tristate Output: DIO Tristate leakage current IOZ CS = low 1 Table 4. Timing Characteristics Symbol Parameter Conditions Min 2-/3-Wire Data Transmission Typ Max am lc s on A te G nt st il 3-Wire Interface lv 6.1 Timing Characteristics fDCLK Clock Frequency Normal operation fDCLK,P Clock Frequency During OTP programming µA 5 200 Units 6 MHz 650 kHz 6 MHz 2-Wire Interface fDCLK Clock Frequency Normal operation 0.1 fDCLK,P Clock Frequency During OTP programming 200 500 kHz 5 General Data Transmission Rising DCLK to CS 15 - ns t1 Chip select to positive edge of DCLK 15 - ns t2 Chip select to drive bus externally - - ns t3 Setup time command bit, Data valid to positive edge of DCLK 30 - ns t4 Hold time command bit, Data valid after positive edge of DCLK 30 t5 Float time, Positive edge of DCLK for last command bit to bus float 30 DCLK/2 ns t6 Bus driving time, Positive edge of DCLK for last command bit to bus drive DCLK/2 +0 DCLK/2 +30 ns Setup time data bit, Data valid to positive edge of DCLK DCLK/2 +30 ns DCLK/2 +30 ns ns ni ca t0 DCLK/2 +0 t8 Hold time data bit, Data valid after positive edge of DCLK DCLK/2 +0 t9 Hold time chip select, Positive edge DCLK to negative edge of chip select 30 t10 Bus floating time, Negative edge of chip select to float bus 0 30 ns tTO Timeout period in 2-wire mode (from rising edge of DCLK) 17 27 µs tCLK Clock Timing Te ch t7 www.austriamicrosystems.com/AS5134 ns 200 Revision 2.3 ns 6 - 32 AS5134 Datasheet - D e t a i l e d D e s c r i p t i o n 7 Detailed Description am lc s on A te G nt st il lv al id Figure 3. Typical Arrangement of AS5134 and Magnet 7.1 Connecting the AS5134 ca The AS5134 can be connected to an external controller in several ways as listed below: Serial 3-wire R/W connection Serial 3-wire Read-only connection ni Serial 2-Wire connection (R/W Mode) Serial 2-Wire Differential SSI connection ch 1-Wire PWM connection Analog output Quadrature A/B/Index output Te Brushless DC Motor Commutation Mode Daisy Chain Mode www.austriamicrosystems.com/AS5134 Revision 2.3 7 - 32 AS5134 Datasheet - D e t a i l e d D e s c r i p t i o n 7.2 Serial 3-Wire R/W Connection In this mode, the AS5134 is connected to the external controller via three signals: Chip Select (CS), Clock (DCLK) inputs and bi-directional DIO (Data In/Out) output. The controller sends commands over the DIO pin at the beginning of each data transmission sequence, such as reading the angle or putting the AS5134 in and out of the reduced power modes. al id Figure 4. SSI Read/Write Serial Data Transmission +5V VDD Micro Controller CS Output DCLK I/O AS5134 Output 100nF am lc s on A te G nt st il DIO lv VDD VDD C2 VSS VSS VSS A pull-down resistor (as shown in Figure 5) is not required. C2 is a hardware configuration input. C2 selects 3-wire mode (C2 = low) or 2-wire mode (C2 = high). command phase data phase ca tCLK DCLK 1 2 3 5 4 6 7 t9 ni CS DIO CMD4 ch t3 t5 CMD0 CMD3 t7 t6 t4 DIO read t8 t10 D15 D14 D1 DIO write D0 Te DIO 21 20 t1 Table 5. Serial Bit Sequence (16bit read/write) Write Command C4 C3 C2 C1 Read/Write Data C0 D15 D14 D13 D12 www.austriamicrosystems.com/AS5134 D11 D10 D9 Revision 2.3 D8 D7 D6 D5 D4 D3 D2 D1 D0 8 - 32 AS5134 Datasheet - D e t a i l e d D e s c r i p t i o n 7.3 Serial 3-Wire Read-only Connection This connection is possible when the AS5134 is only used to provide the angular data (no power down or OTP access). The Chip Select (CS) and Clock (DCLK) connection is the same as in the R/W mode, but only a digital input pin (not an I/O pin) is required for the DIO connection. As the first 5 bits of the data transmission are command bits sent to the AS5134, both the microcontroller and the AS5134 are configured as digital inputs during this phase. Therefore, a pull-down resistor must be added to make sure that the AS5134 reads “00000” as the first 5 bits, which sets the Read_Angle command. al id Note: All further application examples are shown in R/W mode, however read-only mode is also possible unless otherwise noted. lv Figure 5. SSI Read-only Serial Data Transmission +5V VDD VDD Micro Controller Output CS Output DCLK Input AS5134 am lc s on A te G nt st il VDD DIO 10k… VSS VSS C2 100k 100nF VSS command phase DCLK 3 4 6 5 8 7 21 20 t9 ca CS DIO read t10 ni DIO D15 D14 D13 D12 D1 DIO write D0 Te ch DIO 2 1 t1 data phase Table 6. 2-or 3-wire Read-only Serial Bit Sequence (21bit read) Command Read Data C4 C3 C2 C1 C0 D15 D14 D13 D12 D11 D10 0 0 0 0 0 lock www.austriamicrosystems.com/AS5134 D9 AGC D8 D7 D6 D5 D4 D3 D2 D1 D0 Angle Revision 2.3 9 - 32 AS5134 Datasheet - D e t a i l e d D e s c r i p t i o n 7.4 Serial 2-Wire Connection (R/W Mode) By connecting the configuration input C2 to VDD, the AS5134 is configured to 2-wire data transmission mode. Only Clock (DCLK) and Data (DIO) signals are required. A Chip Select (CS) signal is automatically generated by the DX output, when a time-out of DCLK occurs. Note: Read-only mode is also possible in this configuration. al id Figure 6. 2-Wire R/W Mode C2 VDD Output AS5134 am lc s on A te G nt st il Micro Controller VDD lv +5V VDD DCLK DIO I/O 100nF VSS VSS VSS command phase data phase timeout phase tTO t0 DX CMD4 CMD3 ch DIO t1 ni CS 3 2 1 4 6 5 7 8 22 ca DCLK t5 CMD2 CMD1 DIO read CMD0 t6 DIO D14 D1 D0 DIO write Te D15 www.austriamicrosystems.com/AS5134 Revision 2.3 10 - 32 AS5134 Datasheet - D e t a i l e d D e s c r i p t i o n 7.5 Serial 2-Wire Differential SSI Connection With the addition of a RS-422 / RS-485 transceiver, a fully differential data transmission, according to the 21-bit SSI interface standard is possible. To be compatible with this standard, the DCLK signal must be inverted. This is done by reversing the Data+ and Data- lines of the transceiver. Note: This type of transmission is read-only. +5V VDD VDD Output Input 1 DCLK DCLK DI 2 D+ D- D- D+ D+ D+ D- D- 3 4 5 AS5134 Micro Controller MAX 3081 or similar VSS VSS VDD am lc s on A te G nt st il C2 lv al id Figure 7. 2-Wire SSI Read-only Mode DCLK DIO VSS 7 6 100nF 8 21 20 ca timeout tTO D15 D14 D1 D0 Te ch ni DI Refer to Table 6 on page 9 for information on 2-or 3-wire Read-only Serial Bit Sequence (21-bit read). www.austriamicrosystems.com/AS5134 Revision 2.3 11 - 32 AS5134 Datasheet - D e t a i l e d D e s c r i p t i o n 7.6 1-Wire PWM Connection This configuration uses the least number of wires: only one line (PWM) is used for data, leaving the total number of connection to three, including the supply lines. This type of configuration is especially useful for remote sensors. Ultra Low Power Mode is not possible in this configuration, as there is no bi-directional data transmission. Pins that are not shown may be left open. al id Figure 8. Data Transmission with Pulse Width Modulated (PWM) Output CS VDD VDD AS5134 100nF am lc s on A te G nt st il Micro Controller lv +5V VDD Input PWM C2 VSS VSS VSS t PWM Init ca t high t low Lock Angle Position 359 clocks exit 8 clocks ch ni Zero degree 8 clocks Te The PWM signal will be generated from the actual stored angle information. The zero-angle corrected value is buffered and fixed until the next PWM-sequence is started. To ease the filtering of the PWM signal, a minimum pulse width is implemented in the protocol. www.austriamicrosystems.com/AS5134 Revision 2.3 12 - 32 AS5134 Datasheet - D e t a i l e d D e s c r i p t i o n Figure 9. Output PWM Signal After Start-up at 0º Unprogrammed Zero Position T-low al id T-high Init + Lock Diagnostic Angle Position exit 359 clocks 8 clocks am lc s on A te G nt st il 8 clocks lv Init Figure 10. Output PWM Signal After Start-up at Initial 0º with a Programmed Zero Position T-high Init Angle Position exit 359 clocks 8 clocks ch ni 8 clocks ca Init + Lock Diagnostic T-low Te After a startup of the AS5134 at the initial zero position the PWM signal indicates a permanent lock diagnostic. This behavior can be ignored during elaboration of the PWM duty cycle. Figure 9 and Figure 10 show the different outputs depending on the OTP zero position programming. After a mechanical movement (1º) the signal will change as shown in Figure 8. A startup at any other position will also look like as shown in Figure 8. www.austriamicrosystems.com/AS5134 Revision 2.3 13 - 32 AS5134 Datasheet - D e t a i l e d D e s c r i p t i o n 7.7 Analog Output This configuration is similar to the PWM connection (only three lines including supply are required). With the addition of a lowpass filter at the PWM output, this configuration produces an analog voltage that is proportional to the angle. This filter can be either passive (as shown in Figure 11) or active. The lower the bandwidth of the filter, the less ripple of the analog output can be achieved. If the AS5134 angular data is invalid, the PWM output will remain at low state and thus the analog output will be 0V. Pins that are not shown may be left open. al id Figure 11. Data Transmission with Pulse Width Modulated (PWM) Output +5V VDD VDD 5V lv CS Analog out AS5134 100nF 0V >=4k7 Analog out PWM 0º C2 VSS PWM out Angle am lc s on A te G nt st il >=4k7 VSS >=1µF 180º 360º >=1µF 7.8 Quadrature A/B/Index Output The phase shift between channel A and B indicates the direction of the magnet movement. Channel A leads channel B at a clockwise rotation of the magnet (top view) by 90 electrical degrees. Channel B leads channel A at a counter-clockwise rotation. Figure 12. Incremental Output Modes Mechanical Zero Position Quad A/B/Index-Mode ca A Mechanical Zero Position Rotation Direction Change B ni Index=0 1 LSB ch Index Hyst= 2LSB max. 3 LSB Te Table 7. Programming Options for the Quadrature Signals A/B/Index Abi (13:12) Function: output multiplexer for pin A,B,I 0 0 A pin A, B pin B, I(index) pin I default value) 0 1 step pin A, direction pin B, I(index) pin I 1 0 pulse pin A, direction pin B, I(index) pin I 1 1 off: LO pin A, LO pin B, LO pin I www.austriamicrosystems.com/AS5134 Revision 2.3 14 - 32 AS5134 Datasheet - D e t a i l e d D e s c r i p t i o n 7.9 Brushless DC Motor Commutation Mode The BLDC signals will be used to control the electrical angle information – according to the amount of pole pairs and the actual mechanical angle position. Refer Figure 13 for an example of n_pole_pairs:=2. For the programming, refer to Serial Synchronous Interface (SSI) on page 18. Figure 13. Commutation Mode al id electrical := mechanical*npole_pairs pole pair : 2 U lv V am lc s on A te G nt st il W 0 0 60 120 180 240 300 0 60 120 180 angle electrical 30 60 90 120 150 180 210 240 270 angle mechanical Table 8. Programming Options for the Commutation Signals U/V/W uvw (11:9) 0 0 0 0 1 0 1 1 0 1 0 1 1 0 BLDC Pole Pairs : 1 electrical angle of 60º = mechanical angle: 60º 1 BLDC Pole Pairs : 2 electrical angle of 60º = mechanical angle: 30º 0 BLDC Pole Pairs : 3 electrical angle of 60º = mechanical angle: 20º 1 BLDC Pole Pairs : 4 electrical angle of 60º = mechanical angle: 15º 0 BLDC Pole Pairs : 5 electrical angle of 60º = mechanical angle: 12º 1 BLDC Pole Pairs : 6 electrical angle of 60º = mechanical angle: 10º 1 off LO pad U, V, W, PWM ca 0 Function 7.10 Daisy Chain Mode ch ni The angle information from the device and the setup for the device is handled over the digital interface. A special port (Dx) can be used to implement a daisy chain mode. Depending on the configuration, it is possible to implement a two wire or a three wire mode. In the three wire mode, each communication starts with the rising edge of the chip select signal. The Port Dx is used to transfer the chip select information from one device to the next. Refer to Figure 14 and Figure 15. In the two wire interface mode, a timeout logic ensures that the digital interface will be reset if there is no clock source available for a certain time. The synchronization between the internal free running analog clock oscillator and the external used digital clock source for the digital interface is done in a way that the digital clock frequency can vary in a wide range. Remark: Reset for the digital interface: Te 3 wire mode via chip select 2 wire mode via timeout Port Symbol Chip Select CS DCLK DCLK www.austriamicrosystems.com/AS5134 Function Indicates the start of a new access cycle to the device CS = LO reset of the digital interface. Clock source for the communication over the digital interface. The maximum and minimum frequency depends on the mode. Revision 2.3 15 - 32 AS5134 Datasheet - D e t a i l e d D e s c r i p t i o n Port Symbol Bidirectional data input output DIO Function Command and data information over one single line. The first bit of the command defines a read or write access. This port enables the daisy chain configuration of several devices. Dx al id Daisy Chain Port Three wire mode: Indicates the end of an interface cycle. Dx can be used as the chip select signal for the next device in the chain. Two wire mode: Will be set with the first falling edge of DCLK and hence, indicates a running clock; it will be cleared at the end of the command sequence or after a timeout phase. Dx can be used as a chip select signal in the two wire mode. lv Waveform – Digital Interface at Three Wire Daisy Chain Mode Note: Defined if the Pin C2 is set to LO at all devices. am lc s on A te G nt st il Figure 14. 3-Wire Daisy Chain Mode CMD(1) CMD(2) Data(1) C4 C3 C2 C1 C0 D15 D14 D13 DCLK CS(1) CS_INT(1) DX(1) = CS(2) CS_INT(2) DX(2) = CS(3) C0 D15 D14 CMD(3) D0 C4 Data(3) C0 D15 D14 CMD(1) D0 Te ch ni ca CS_INT(3) D0 C4 Data(2) DX DX DX(2) DX DIO DIO DIO CLK CLK CLK CS DIO DX(1) C2 LO CS C2 LO CS C2 LO CS CLK www.austriamicrosystems.com/AS5134 Revision 2.3 16 - 32 AS5134 Datasheet - D e t a i l e d D e s c r i p t i o n Waveform – Digital Interface at Two Wire Daisy Chain Mode Note: Defined, if the Pin C2 is set to LO at all devices except the last one where the Pin C2 is set to HI. t14_2 CMD(1) C2 C1 C0 D15 D14 D13 D0 C4 Data(2) CMD(3) C0 D15 D14 D0 C4 Data(3) C0 D15 D14 CMD(1) D0 C4 lv C4 C3 CMD(2) Data(1) al id Figure 15. 2-Wire Daisy Chain Mode DCLK DX(3) am lc s on A te G nt st il CS(1) CS_INT(1) t14_3 t16 DX(1) = CS(2) CS_INT(2) DX(2) = CS(3) CS_INT(3) DX CS DIO DX(1) DX CS ca DX(3) CLK CLK C2 LO DX CS DIO DIO CLK DX(2) C2 LO C2 LO ni DIO Te ch DCLK www.austriamicrosystems.com/AS5134 Revision 2.3 17 - 32 AS5134 Datasheet - D e t a i l e d D e s c r i p t i o n 7.11 Serial Synchronous Interface (SSI) Normal mode is used for normal operations, whereas extended mode is for accessing the OTP. Table 9. Commands of the SSI in Normal Mode Digital interface at normal mode cmd bin mode 15 14 13 12 23 WRITE CONFIG 1 10111 write LP SM_ RES tst tst 20 SET MT COUNTER 10100 write 16 EN PROG 10000 write 4 RD MT COUNTER 00100 read 0 RD_ANGLE 00000 read 11 10 Hyst <1:0> 9 8 7 tst tst tst 0 0 1 6 5 4 3 0 1 0 1 multi-turn-counter <8:0> 0 0 0 1 1 multi-turn-counter <8:0> lock_ adc OTP _OK 1 0 1 1 0 lv 1 2 al id # angle <8:0> am lc s on A te G nt st il agc <5:0> SM_RES: State machine reset of the digital part of the device (soft reset). EN PROG: Enables the access to the OTP register in Extended Mode. WRITE CONFIG: LP HI activates the sleep mode of the AS5134. The power consumption is significantly reduced. LP LO returns to normal operation mode. During sleep mode, the lock_adc bit in command 0 is LO. RD_MT Counter: Command for read out of multi turn register. OTP_OK: Bit shows correct readout of the OTP register after startup. The bit is valid till the next OTP access. RD_ANGLE: Command for read out of angle value and AGC value (agc). “Lock” indicates a locked ADC. tst: Test bits for internal testing (must be left unchanged). Hyst (11:10): Digital Hysteresis can be set via the digital interface 0, 1, 2 (default), 3 LSB Hyst 0 0 1 0 2 LSB (default value) 1 1 0 3 1 0 ca 1 Function The hysteresis can be changed over the interface. An activation of the SM_RES bit is required. This can be performed in two steps - ni 1. Use WRITE CONFIG 1 command and write the selected hysteresis and SM_RES = ‘1’ into the device. 2. Use again WRITE CONFIG 1 command and release SM_RES = ‘0’ with the same hysteresis setting. SET MT COUNTER: Command for setting the Multi Turn Counter to a defined value. LP: Default "0"; "1" for using the low power function. Te ch lock_adc: Indicates that the tracking adc is in a locked status. For a valid angle (the magnetic field has to be in a certain range, which is indicated by the agc value) or a missing magnet the lock_adc is set. www.austriamicrosystems.com/AS5134 Revision 2.3 18 - 32 19 - 32 Table 10. Commands of the SSI in Extended Mode Factory Settings Number of bits 2 18 1 4 4 1 41 40 39 ..36 35 ..32 31 Customer Settings 4 2 3 4 1 2 21 20 ..17 16 15 ..14 2 3 13 ..12 11 ..9 9 # cmd bin mode 31 WRITE OTP 11111 xt write tst ID tst tst tst tst tst tst tst tst lock_otp (*) r_ add r_bit sensitivity abi uvw zero angle 25 PROG_OTP 11001 xt write tst ID tst tst tst tst tst tst tst tst lock_otp (*) r_ add r_bit sensitivity abi uvw zero angle 15 READ_OTP 01111 xt read tst ID tst tst tst tst tst tst tst tst lock_otp (*) r_ add r_bit sensitivity abi uvw zero angle 9 READ ANA 01001 xt read tst ID tst tst tst tst tst tst tst tst lock_otp (*) r_ add r_bit sensitivity abi uvw zero angle lv 30 ..27 26 ..25 24 ..22 1 am lc s on A te G nt st il 61 ..60 59 ..42 1 al id Digital interface at extended mode 8..0 PROG_OTP: Programming of the OTP register. Only Bits <0:20> can be programmed by the customer. The internal factory settings are locked by an “internal lock bit” and cannot be programmed. READ_OTP: Read out the content of the OTP register. Data written by WRITE_OTP and PROG_OTP is read out. READ ANA: Analog read out mode. The analog value of every OTP bit is available at pin 1 (PROG), which allows for a verification of the fuse process. No data is available at the SSI. Revision 2.3 WRITE OTP: Writing of the OTP register. The written data is volatile. “Zero Angle” is the angle, which is set for zero position. “Sensitivity” is the gain setting in the signal path. “Redundancy” is the number of bits, which allows the customer to overwrite one of the customer OTP bits <0:15>. tst: Test bits for internal testing (must be left unchanged). ID (59:42): Chip identifier to track the device in the field lock_otp (21): To disable the programming of the factory bits – write access is still possible r_add (20:17): The following OTP bits can be modified according to the requirements of the application. r_bit (16): Redundancy bit (functionality is only implemented in the user region) ca uvw (11:9): Number of poles of the brush less dc motor - impact to the uvw signals zero angle (8:0): Trim bit for the zero angle information Notes: ni LP: Enables the low power mode to reduce the current consumption - digital registers are not reset. ch 1. The Extended Mode can be enabled by sending command 16 (EN PROG). 2. The lock bit will be deleted during power down or sleep mode to ensure that the user is able to detect that the read out angle value is computed after the wake up sequence. 3. In extended mode 1 data bit (wirte/read) requires 4 clock cycles (see Figure 19). Te AS5134 Datasheet - D e t a i l e d D e s c r i p t i o n abi (13:12): Mode selection for the incremental signals www.austriamicrosystems.com/AS5134 Sensitivity (15:14): Trim bit for the gain of the amplifier after the demodulator 19 18 17 16 15 14 12 11 10 9 8 7 6 ABI ABI U V W ZA ZA ZA 0 0 0 1 / / / / / / / / / 0 0 0 1 1 / / / / / / / / / 0 0 1 0 1 / / / / / / / / / 0 0 1 1 1 / / / / / / / / 0 1 0 0 1 / / / / / / / 0 1 0 1 1 / / / / / / 0 1 1 0 1 / / / / / 0 1 1 1 1 / / / / 1 0 0 0 1 / / / 1 0 0 1 1 / / 1 0 1 0 1 / 1 0 1 1 1 / 1 1 0 0 1 / 1 1 0 1 1 / 1 1 1 0 1 / 1 1 1 1 1 1 5 4 3 2 1 0 ZA ZA ZA ZA ZA ZA / / / / / / 1 / / / / / 1 / / / / / 1 / / / / / / 1 / / / / / / / 1 / / / / / / / / 1 / / / / / / / / / 1 / / / / / / / / / / 1 / / / / / / / / / / / 1 / / / / / / / / / / / / 1 / / / / / / / / / / / / / 1 / / / / / / / / / / / / / 1 / / / / / / / / / / / / / 1 / / / / / / / / / / / / / 1 / / / / / / / / / / / / / 1 / / / / / / / / / / / / / / / / / / / / / / / / / / / / / ch ni ca am lc s on A te G nt st il 0 Te AS5134 Datasheet - D e t a i l e d D e s c r i p t i o n R_add R_add R_add R_add R_bit Sensitivity Sensitivity 13 lv 20 www.austriamicrosystems.com/AS5134 Table 11. Redundancy Addressing al id For a better programming reliability, a redundancy is implemented. This function can be used in case if the programming of one bit fails. With an address RA(4:0) one bit can be selected and programmed. Revision 2.3 20 - 32 7.12 Redundancy AS5134 Datasheet - A p p l i c a t i o n I n f o r m a t i o n 8 Application Information The benefits of AS5134 are as follows: Complete system-on-chip, no angle calibration required Flexible system solution provides absolute serial, ABI, UVW and PWM outputs Ideal for applications in harsh environments due to magnetic sensing principle al id High reliability due to non-contact sensing Robust system, tolerant to horizontal misalignment, airgap variations, temperature variations and external magnetic fields 8.1 AS5134 Programming The AS5134 offers the following user programmable options: lv Zero Position Programming. This programming option allows the user to program any rotation angle of the magnet as the new zero position. This useful feature simplifies the assembly process as the magnet does not need to be mechanically adjusted to the electrical zero position. It can be assembled in any rotation angle and later matched to the mechanical zero position by zero position programming. The 8,5-bit user programmable zero position can be applied both temporarily (command WRITE OTP, #31) or permanently (command PROG OTP, #25). 8.1.1 am lc s on A te G nt st il Magnetic Field Optimization. This programming option allows the user to match the vertical distance of the magnet with the optimum magnetic field range of the AS5134 by setting the sensitivity level. The 2-bit user programmable sensitivity setting can be applied both temporarily (command WRITE OTP, #31) or permanently (command PROG OTP, #25). OTP Programming Connection Programming of the AS5134 OTP memory does not require a dedicated programming hardware. The programming can be simply accomplished over the serial 3-wire interface (see Figure 17) or the optional 2-wire interface (see Figure 6). For permanent programming (command PROG OTP, #25), a constant DC voltage of 8.0-8.5V must be connected to pin 1 (PROG). For temporary OTP write (“soft write”; command WRITE OTP, #31), the programming voltage is not required. The capacitors must be as close as possible to the pin, to ensure that a serial inductance of 50nH is not to be exceeded. The 50nH inductance could translate into a cable length of approximately 5cm. Figure 16. OTP Programming Connection +5V VDD VDD Output DCLK I/O DIO 8.0 – 8.5V 100nF + - 100nF PROG 10µF Micro Controller ni CS C2 VSS VSS Te ch VSS Output AS5134 ca VDD www.austriamicrosystems.com/AS5134 Revision 2.3 21 - 32 AS5134 Datasheet - A p p l i c a t i o n I n f o r m a t i o n Figure 17. OTP Programming Connection Special Case Standard Case VSUPPLY Vprog C1 Vzapp PROG GND C2 C1 PROM Cell 100nF 10µF VDD Vprog C2 PROG GND PROM Cell 10µF am lc s on A te G nt st il 100nF L<50nH VDD lv L<50nH Vzapp VSUPPLY al id maximum parasitic cable inductance Remove for normal operation Note: The maximum capacitive load at PROG in normal operation is less than 20pF. However, during programming the capacitors C1+C2 are needed to buffer the programming voltage during current spikes, but they must be removed for normal operation. To overcome this contradiction, the recommendation is to add a diode (4148 or similar) between PROG and VDD as shown in Figure 17 (special case setup), if the capacitors can not be removed at final assembly. Due to D1, the capacitors C1+C2 are loaded with VDD-0.7V at startup, hence not influencing the readout of the internal OTP registers. During programming the OTP, the diode ensures that no current is flowing from PROG (8-8.5V) to VDD (5V). In the standard case (see Figure 17), the verification of a correct OTP readout can be done either by analog readback of the OTP register or with the aid of the OTP_OK bit. The special case setup provides only the OTP_OK bit for verifying the correct reading of the OTP. Analog readback is not usable in the special case mode, as the diode pulls the PROG pin to VDD. ca The OTP_OK bit can be accessed with command #4 (see Table 9). As long as the PROG pin is accessible it is recommended to use standard setup. In case the PROG pin is not accessible at final assembly, the special setup is recommended. Programming Verification ni 8.1.2 After programming, the programmed OTP bits must be verified in two ways: Digital Read Out (Mandatory): After sending a READ OTP command, the readback information must be the same as programmed ch information. Otherwise, it indicates that the programming was not performed correctly. Note: Either “Digital Verification” or “Analog Verification” must be carried out in addition to the “Digital Read Out”. Te Digital Verification: Checking the OTP_OK bit (0 = OK, 1 = error) i) At room temperature ii) Right after the programming Analog Verification: By switching into Extended Mode and sending a READ ANA command, the pin PROG becomes an output sending an analog voltage with each clock representing a sequence of the bits in the OTP register (starting with D61). A voltage of <500mV indicates a correctly programmed bit (“1”) while a voltage level between 2V and 3.5V indicates a correctly unprogrammed bit (“0”). Any voltage level in between indicates incorrect programming. www.austriamicrosystems.com/AS5134 Revision 2.3 22 - 32 AS5134 Datasheet - A p p l i c a t i o n I n f o r m a t i o n Figure 18. Analog OTP Verification VDD CS Output DCLK I/O DIO 8.0 – 8.5V VSS AS5134 Output 100nF lv VDD Micro Controller al id +5V VDD PROG C2 VSS am lc s on A te G nt st il V VSS Figure 19. Extended Operation Mode: Timing of Analog Readout CMD_PHASE DCLK t0 t1 DATA_PHASE_EXTENDED t9 CS t5 CMD4 t3 DIO CMD2 CMD0 t7 t6 D61 D60 t10 t12 D60 READ D0 t11 D61 CMD t10 t8 D0 WRITE Te ch ni DIO t4 HI ca DIO www.austriamicrosystems.com/AS5134 Revision 2.3 23 - 32 AS5134 Datasheet - A p p l i c a t i o n I n f o r m a t i o n 8.2 AS5134 Status Indicators 8.2.1 Lock Status Bit The Lock signal indicates, whether the angle information is valid (ADC locked, Lock = high) or invalid (ADC unlocked, Lock = low). To determine a valid angular signal at best performance, the following indicators can be set: Lock = 1 al id AGC = >00H and < 3FH After a startup of the AS5134 at the initial zero position the lock status bit will remain at (Lock=0). After a mechanical rotation (1º) the lock status bit will change to (Lock=1). 8.2.2 Magnetic Field Strength Indicators lv Note: The angle signal is also valid (Lock = 1), when the AGC is out of range (00H or 3FH), but the accuracy of the AS5134 is reduced due to the out of range condition of the magnetic field strength. The AS5134 is not only able to sense the angle of a rotating magnet, it can also measure the magnetic field strength (and hence the vertical distance) of the magnet. This additional feature can be used for several purposes: am lc s on A te G nt st il - as a safety feature by constantly monitoring the presence and proper vertical distance of the magnet - as a state-of-health indicator, e.g. for a power-up self test - as a pushbutton feature for rotate-and-push types of manual input devices The magnetic field strength information is available in two forms: Magnetic Field Strength Software Indicator. The serial data that is obtained by command READ ANGLE contains the 6-bit AGC information. The AGC is an automatic gain control that adjusts the internal signal amplitude obtained from the Hall elements to a constant level. If the magnetic field is weak, e.g. with a large vertical gap between magnet and IC, with a weak magnet or at elevated temperatures of the magnet, the AGC value will be high. Likewise, the AGC value will be lower when the magnet is closer to the IC, when strong magnets are used and at low temperatures. The best performance of the AS5134 will be achieved when operating within the AGC range. It will still be operational outside the AGC range, but with reduced performance especially with a weak magnetic field due to increased noise. Factors Influencing the AGC Value. In practical use, the AGC value will depend on several factors: The initial strength of the magnet. Aging magnets show a reducing magnetic field over time which results in an increase of the AGC value. The effect of this phenomenon is relatively small and can easily be compensated by the AGC. The vertical distance of the magnet. Depending on the mechanical setup and assembly tolerances, there will always be some variation of the vertical distance between magnet and IC over the lifetime of the application using the AS5134. Again, vertical distance variations can be compensated by the AGC. The temperature and material of the magnet. The recommended magnet for the AS5134 is a diametrically magnetized, 5-6mm diameter ni ca NdFeB (Neodymium-Iron-Boron) magnet. Other magnets may also be used as long as they can maintain to operate the AS5134 within the AGC range. Every magnet has a temperature dependence of the magnetic field strength. The temperature coefficient of a magnet depends on the used material. At elevated temperatures, the magnetic field strength of a magnet is reduced, resulting in an increase of the AGC value. At low temperatures, the magnetic field strength is increased, resulting in a decrease of the AGC value. The variation of magnetic field strength over temperature is automatically compensated by the AGC. Te ch OTP Sensitivity Adjustment. To obtain best performance and tolerance against temperature or vertical distance fluctuations, the AGC value at normal operating temperature is in the middle between minimum and maximum, hence it is around 100000 bin (20hex). To facilitate the “vertical centering” of the magnet+IC assembly, the sensitivity of the AS5134 can be adjusted in the OTP register in 4 steps. A sensitivity adjustment is recommended, when the AGC value at normal operation is close to its lower limit (around 00H). The default sensitivity setting is 00H = low sensitivity. Any value >00H will increase the sensitivity (see Table 3). www.austriamicrosystems.com/AS5134 Revision 2.3 24 - 32 AS5134 Datasheet - A p p l i c a t i o n I n f o r m a t i o n 8.3 Multi Turn Counter A 9-bit register is used for counting the magnet’s revolutions. With each zero transition in any direction, the output of a special counter is incremented or decremented. The initial value after reset is 0 LSB. The multi turn value is encoded as complement on two. Clockwise rotation gives increasing angle values and positive turn count. Counter clockwise rotation exhibits decreasing angle values and a negative turn count respectively. Decimal Value 011111111 256 --- --- 01111111 127 --- --- 00000011 +3 00000010 +2 00000001 +1 00000000 0 11111111 -1 11111110 -2 11111101 -3 --- --- 10000000 -128 --- --- 100000000 -255 am lc s on A te G nt st il lv al id Bit Code The counter output can be reset by using command 20 – SET MT Counter. It is immediately reset by the rising clock edge of this bit. Any zero crossing between the clock edge and the next counter readout changes the counter value. 8.4 High Speed Operation The AS5134 is using a fast tracking ADC (TADC) to determine the angle of the magnet. Once the TADC is synchronized with the angle, it sets the LOCK bit in the status register. In worst case, usually at start-up, the TADC requires up to 179 steps to lock. Once it is locked, it requires only one cycle to track the moving magnet. The AS5134 can operate in locked mode at rotational speeds up to 76875 rpm. ca In Low Power Mode, the position of the TADC is frozen. It will continue from the frozen position once it is powered up again. If the magnet has moved during the power down phase, several cycles will be required before the TADC is locked again. The tracking time to lock in with the new magnet angle can be roughly calculated as: ni 2s NewAngle – OldAngle t LOCK = -------------------------------------------------------------------------1.406 (EQ 1) ch Where: tLOCK = Time required to acquire the new angle after power up from one of the reduced power modes [µs] OldAngle = Angle position when one of the reduced power modes is activated [º] NewAngle = Angle position after resuming from reduced power mode [º] Propagation Delay Te 8.4.1 The Propagation delay is the time required from reading the magnetic field by the Hall sensors to calculating the angle and making it available on the serial or PWM interface. While the propagation delay is usually negligible on low speeds, it is an important parameter at high speeds. The longer the propagation delay, the larger becomes the angle error for a rotating magnet as the magnet is moving while the angle is calculated. The position error increases linearly with speed. The main factors that contribute to the propagation delay are discussed in detail further in this document. www.austriamicrosystems.com/AS5134 Revision 2.3 25 - 32 AS5134 Datasheet - A p p l i c a t i o n I n f o r m a t i o n 8.4.2 Digital Readout Rate Apart from the chip-internal propagation delay, the chip requires time to read and process the angle data. Due to its nature, a PWM signal is not usable at high speeds, as you get only one reading per PWM period. Increasing the PWM frequency improves it. But problems will occur at the receiving controller to resolve the PWM steps. The frequency on the AS5134 PWM output is typical 1.33kHz with a resolution of 2µs/step. A more suitable approach for high speed absolute angle measurement is using the serial interface. With a clock rate of up to 6MHz, a complete set of data (21bits) can be read in >3.5µs. 8.4.3 Low Power Mode al id The target of this mode is to reduce the long time power consumption of the device for battery powered applications, without losing the actual angle information. I active t on + I powerdown t off I avg = --------------------------------------------------------------------t on + t off am lc s on A te G nt st il sampling interval = ton + toff lv In Low Power Mode, the AS5134 is inactive. The last state (for e.g. the angle, AGC value, etc.) is frozen and the chip starts from this frozen state when it resumes active operation. This method provides much faster start-up than a “cold start” from zero. If the AS5134 is cycled between active and reduced current mode, a substantial reduction of the average supply current can be achieved. The minimum dwelling time is <0.5 ms. The actual active time depends on how much the magnet has moved while the AS5134 was in reduced power mode. The angle data is valid, when the status bit LOCK has been set. Once a valid angle has been measured, the AS5134 can be put back to reduced power mode. The average power consumption can be calculated as: (EQ 2) Where: Iavg = Average current consumption Iactive = Current consumption in active mode Ipower_down = Ioff : Current consumption in reduced power mode (max. 120µA) ton = Time period during which the chip is operated in active mode toff = Time period during which the chip is in reduced power mode To access the Low Power Mode, the bit ‘LP’ <15> of the digital interface has to be set to “1”. Figure 20. Low Power Mode Connection R1 Ion Ioff ca VDD 100nF S N DCLK VDD Micro Controller DIO AS5134 VSS toff on/off CS C2 VSS ch ni C1 ton +5V VDD Te VSS Reducing Power Supply Peak Currents. When the AS5134 is toggled between active and reduced power mode, there is the option to add an RC-filter (R1/C1) to avoid peak currents at power supply. The value of R1 is set that it maintains a VDD voltage of 4.5V – 5.5V and especially during long active periods the R1 must maintain the charge which C1 has expired. C1 can be set in such a way as it can support peak currents during the active operation period. In case of long active periods, C1 has a great value and R1 has a small value. www.austriamicrosystems.com/AS5134 Revision 2.3 26 - 32 AS5134 Datasheet - P a c k a g e D r a w i n g s a n d M a r k i n g s 9 Package Drawings and Markings The device is available in a 20-Lead Shrink Small Outline package. al id Figure 21. Package Drawings and Dimensions lv YYWWMZZ am lc s on A te G nt st il AS5134 Min 1.73 0.05 1.68 0.22 0.09 6.90 7.40 5.00 0.55 0.09 0º Nom 1.86 0.13 1.73 0.30 0.17 7.20 7.80 5.30 0.65 BSC 0.75 1.25 REF 0.25 BSC 4º 20 Max 1.99 0.21 1.78 0.38 0.25 7.50 8.20 5.60 0.95 8º Te ch ni ca Symbol A A1 A2 b c D E E1 e L L1 L2 R N Notes: 1. Dimensions and tolerancing conform to ASME Y14.5M-1994. 2. All dimensions are in millimeters. Angles are in degrees. Marking: YYWWMZZ. YY WW M ZZ Last two digits of the manufacturing year Manufacturing week Plant identifier Assembly traceability code www.austriamicrosystems.com/AS5134 Revision 2.3 27 - 32 AS5134 Datasheet - P a c k a g e D r a w i n g s a n d M a r k i n g s ch ni ca am lc s on A te G nt st il lv al id Figure 22. Vertical Cross Section of SSOP-20 Te Notes: www.austriamicrosystems.com/AS5134 1. All dimensions in mm. 2. Die is slightly off centered. Revision 2.3 28 - 32 AS5134 Datasheet - P a c k a g e D r a w i n g s a n d M a r k i n g s 9.1 Recommended PCB Footprint al id Figure 23. PCB Footprint Te ch ni ca am lc s on A te G nt st il lv Recommended Footprint Data Symbol mm inch A 9.02 0.355 B 6.16 0.242 C 0.46 0.018 D 0.65 0.025 E 6.31 0.248 www.austriamicrosystems.com/AS5134 Revision 2.3 29 - 32 AS5134 Datasheet - R e v i s i o n H i s t o r y Revision History Revision Date Owner Description 1.3 Jun 01, 2007 1.5 May 21, 2008 Added Extended Operation Mode: Timing of Analog Readout (page 23) 1.6 Jul 07, 2008 Updated Connecting the AS5134 (page 7) 1.7 Jul 23, 2008 Initial revision Updated Key Features (page 1), DC Characteristics of Digital Inputs and Outputs (page 5) Added Daisy Chain Mode (page 15) Added Low Power Mode (page 26) 1.8 Added topic on ‘Accuracy’ Aug 12, 2008 Mar 10, 2009 1.10 Apr 29, 2009 1.11 Jun 24, 2009 1.12 Sep 25, 2009 1.13 Jan 27, 2010 rfu Updated Timing Characteristics (page 6), 2-or 3-wire Read-only Serial Bit Sequence (21bit read) (page 9), OTP Programming Connection (page 21), Programming Verification (page 22) am lc s on A te G nt st il 1.9 lv Added Package Drawings and Markings (page 27) al id apg mub jja Updated Electrical Characteristics (page 5) Maximum speed modified from 25.000 rpm to 140.000 rpm across the datasheet. Maximum speed modified from 140.000 rpm to 82.000 rpm across the datasheet. apg Updated Package Drawings and Markings (page 27) 1.14 Mar 30, 2010 mub Modified the following chapters: Key Features (page 1) Absolute Maximum Ratings (page 4) Electrical Characteristics (page 5) Timing Characteristics (page 6) 1.15 Jun 29, 2010 apg Updated PWM period (page 5), PWM frequency (page 5) 2.0 May 23, 2011 mub Updated Absolute Maximum Ratings, 1-Wire PWM Connection, Package Drawings and Markings 2.1 Nov 25, 2011 2.2 Feb 29, 2012 2.3 Apr 26, 2012 Updated PWM width (see Table 3), Programming Verification (page 22) and Vertical Cross Section of SSOP-20 (page 28) Updated Electrical Characteristics (page 5), Vertical Cross Section of SSOP20 (page 28), Rewrote Digital Readout Rate (page 26), Reducing Power Supply Peak Currents (page 26) mub Updated ‘2FH’ to ‘3FH’ in Lock Status Bit (page 24) ni ca ekno Te ch Note: Typos may not be explicitly mentioned under revision history. www.austriamicrosystems.com/AS5134 Revision 2.3 30 - 32 AS5134 Datasheet - O r d e r i n g I n f o r m a t i o n 10 Ordering Information The devices are available as the standard products shown in Table 12. Table 12. Ordering Information Description Delivery Form Package AS5134-ZSST 360 Step Programmable High Speed Magnetic Rotary Encoder Tape & Reel 20-pin SSOP Technical Support is available at http://www.austriamicrosystems.com/Technical-Support Te ch ni ca am lc s on A te G nt st il For further information and requests, please contact us mailto: [email protected] or find your local distributor at http://www.austriamicrosystems.com/distributor lv Note: All products are RoHS compliant and austriamicrosystems green. Buy our products or get free samples online at ICdirect: http://www.austriamicrosystems.com/ICdirect al id Ordering Code www.austriamicrosystems.com/AS5134 Revision 2.3 31 - 32 AS5134 Datasheet - C o p y r i g h t s Copyrights Copyright © 1997-2012, austriamicrosystems AG, Tobelbaderstrasse 30, 8141 Unterpremstaetten, Austria-Europe. Trademarks Registered ®. All rights reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. All products and companies mentioned are trademarks or registered trademarks of their respective companies. al id Disclaimer lv Devices sold by austriamicrosystems AG are covered by the warranty and patent indemnification provisions appearing in its Term of Sale. austriamicrosystems AG makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. austriamicrosystems 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 austriamicrosystems AG for current information. This product is intended for use in normal 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 austriamicrosystems AG for each application. For shipments of less than 100 parts the manufacturing flow might show deviations from the standard production flow, such as test flow or test location. Contact Information Headquarters am lc s on A te G nt st il The information furnished here by austriamicrosystems AG is believed to be correct and accurate. However, austriamicrosystems 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 austriamicrosystems AG rendering of technical or other services. ni Tel: +43 (0) 3136 500 0 Fax: +43 (0) 3136 525 01 ca austriamicrosystems AG Tobelbaderstrasse 30 A-8141 Unterpremstaetten, Austria ch For Sales Offices, Distributors and Representatives, please visit: Te http://www.austriamicrosystems.com/contact www.austriamicrosystems.com/AS5134 Revision 2.3 32 - 32