CONFIDENTIAL [AK8999A/AW/AD] AK8999A/AW/AD Pressure Sensor Control IC 1. Genaral Description The AK8999A is a piezoresistive semiconductor pressure sensor control IC that compensates temperature drifts and sensor variations. Variations in the sensor can be corrected with compensation values stored in an integrated non-volatile memory (EEPROM). The primary characteristics and its associated temperature drifts of pressure sensors are corrected with the 1st order coefficient for temperature compensation or the quasi 2nd order coefficient for temperature compensation by piecewise linear approximation (1st order independent coefficients can be set for high and low temperature side on the basis of 25C) by integrated temperature compensation circuits for offset voltage and span voltage. The AK8999A integrates two pressure threshold detectors. When a pressure exceeds the detection threshold stored in the EEPROM is applied, the DET1 and the DET2/PTH pins output “H” or “L” (the output polarity is selectable). This output can be used as a control signal of pressure switch applications. Accessing to the AK8999A is made via the 2-wire serial interface on CSCLK pin and VOUT pin (set as digital I/O mode) for setting functions and storing compensation values. The AK8999A is available in a 16-pin UQFN package, in wafer form or in a die on a tray. 2. Feartures • Pressure sensor compensation and excitation IC (Analog output) • Supply voltage current : 8.5mA max @ 8.33kHz sampling • Supply voltage : 3.0V ± 10%, 3.3V ± 10%, 5.0V ± 10% • Operating temperature range : -40 to 105 C • Integrated sensor output compensation (AK8999A Input conversion) - Offset voltage adjustment Adjustment range : Coarse ±13 to ±373mV, Fine ±1 to ±34mV @VDD:5.0V Adjustment step : Coarse 2 to 53mV /step, Fine 0.01 to 0.27mV /step @ VDD:5.0V - Offset voltage temperature drift adjustment (1st order or Quasi 2nd order correction by piecewise linear approximation) Adjustment range : ±0.04 to ±1.23mV/C @ VDD:5.0V Adjustment step : 0.2 to 4.8μV/C @ VDD:5.0V - Output span voltage adjustment (G1, G2, G3) Total adjustment range : 3.4 to 261.6mV @ VDD:5.0V G1 adjustment step : 0.57 to 74.7mV /step @ VDD:5.0V G2 adjustment step : 3.43 to 130.8mV /step @ VDD:5.0V G3 adjustment step : 0.01 to 0.40mV /step @ VDD:5.0V - Sensitivity temperature drift adjustment (1st order or Quasi 2nd order correction by piecewise linear approximation) Adjustment range : -4000ppm/ C to 2500ppm/ C Adjustment step : 18ppm/ C /step • Integrated output reference voltage adjustment function Adjustment range : 0.02*VDD to 0.98*VDD Adjustment step : 0.002*VDD /step • Integrated sampling frequency switching function : 0.83kHz, 8.33kHz • Integrated analog circuit reference voltage stabilizer • SCF and SMF included for band limitation : fc = 1.0kHz, 500Hz, 250 Hz • 2-wire serial interface (CSCLK, VOUT pin) • Ratiometric voltage output MS1600-E-00 2014/05 -1- CONFIDENTIAL [AK8999A/AW/AD] • Integrated constant voltage source for pressure sensor : 2.2V @ VDD:3.0, 3.3V ± 10%, 4.0V or 2.2V @ VDD:5.0V ± 10% • Integrated pressure threshold detectors (x2) - Detection threshold adjustment control Adjustment range : 0.125*VDD to 0.9*VDD Adjustment step : 0.025*VDD /step - Detection threshold external setting function (DET2/PTH pin use) - Hysteresis voltage adjustment control Adjustment range : 0.03*VDD to 0.06*VDD Adjustment step : 0.01*VDD /step • Integrated reference voltage & reference current generator - VREF voltage adjustment control Resolution : 3bits Adjustment step : 1% /step - VREF current adjustment control Resolution : 4bits Adjustment step : 2.8% /step typ. • Temperature sensor (inter nal or external) - Temperature range : -40 to 105 C - Internal temperature sensor output voltage adjustment control Resolution : 6 bits Adjustment step : 0.2% /step - External temperature sensor output voltage adjustment control Resolution : 9 bits (Coarse=3bits, Fine=6bits) Adjustment step : Coarse 10% /step, Fine 0.2% /step - Integrated external temperature sensor constant current circuit:±50μA typ. • Integrated oscillator for intermittent operation (1000kHz typ.) - Oscillating frequency adjustment control Resolution : 4 bits Adjustment step : 5% /step typ. • Integrated EEPROM for compensation values and control data storage - Size : 135 bits - Endurance : 1,000 times or more - Retention time : 10 years or more @Ta: 105C • Supply Type : Die (Tray), Wafer, PKG (UQFN16) Product name AK8999A AK8999AW AK8999AD Supply Type PKG (UQFN16) Wafer Die (Tray) MS1600-E-00 Description 2014/05 -2- CONFIDENTIAL [AK8999A/AW/AD] 3. Table of Contents 1. Genaral Description....................................................................................................................................... 1 2. Feartures ........................................................................................................................................................ 1 3. Table of Contents .......................................................................................................................................... 3 4. Adjustment Characteristics............................................................................................................................ 4 5. Block Diagram and Functions ....................................................................................................................... 7 6. Pin Configurations....................................................................................................................................... 10 7. Pin conditions .............................................................................................................................................. 11 8. Pin Assignments and Functions................................................................................................................... 11 9. Level Diagram ............................................................................................................................................. 12 10. Absolute Maximum Ratings...................................................................................................................... 13 11. Recommended Operating Conditions........................................................................................................ 13 12. Electrical Characteristics ........................................................................................................................... 13 13. Operation Sequence................................................................................................................................... 24 14. Adjustment Sequence ................................................................................................................................ 26 15. Functional Descriptions............................................................................................................................. 29 16. Serial Interface Description....................................................................................................................... 43 17. Recommended External Circuits ............................................................................................................... 66 18. Package...................................................................................................................................................... 67 IMPORTANT NOTICE .................................................................................................................................. 68 MS1600-E-00 2014/05 -3- CONFIDENTIAL [AK8999A/AW/AD] 4. Adjustment Characteristics 1) Sensor Characteristics Adjustable characteristics of pressure sensors are shown below. ■VDD: 5V ± 10%, Sensor drive voltage: 4V, Temperature range: -40 to 105C Parameter Symbol Min. Typ. Max. Units Description Sensor resistance 1.00 4.00 6.50 Sres k Voltage input span range Sspnin1 12.00 44.00 76.00 mV Sensor1 Sspnin2 17.00 70.00 125.00 mV Sensor2 Offset voltage adjustment Soff1 -15.00 0.00 15.00 mV Sensor1 range Soff2 -35.00 0.00 35.00 mV Sensor2 Sensitivity temp. drift Sst1 -4000 2500 ppm/C Sensor1 coefficient Sst2 -4000 2500 ppm/C Sensor2 Offset temp. drift Sot1 -0.040 0.00 0.040 mV/C Sensor1 coefficient Sot2 -0.080 0.00 0.080 mV/C Sensor2 Note) To combine characteristics of Sensor 1/2 is not allowed. For example, when the characteristic of span voltage is used as Sensor 1, the characteristic of offset voltage can choose only Sensor 1. ■VDD: 3V ± 10%, 3.3V ± 10%, 5V ± 10%, Sensor drive voltage: 2.2V, Temperature range: -40 to 105C Parameter Symbol Min. Typ. Max. Units Description Sensor resistance Sres 0.82 4.00 6.50 k Voltage input span range Sspnin1 mV Sensor1 6.60 24.20 41.80 Sspnin2 9.00 40.00 70.00 mV Sensor2 Offset voltage adjustment Soff1 -8.25 0.00 8.25 mV Sensor1 range Soff2 -19.25 0.00 19.25 mV Sensor2 Sensitivity temp. drift Sst1 -4000 2500 ppm/C Sensor1 coefficient Sst2 -4000 2500 ppm/C Sensor2 Offset temp. drift Sot1 -0.022 0.00 0.022 mV/C Sensor1 coefficient Sot2 -0.044 0.00 0.044 mV/C Sensor2 Note) To combine characteristics of Sensor 1/2 is not allowed. For example, when the characteristic of span voltage is used as Sensor 1, the characteristic of offset voltage can choose only Sensor 1. MS1600-E-00 2014/05 -4- CONFIDENTIAL [AK8999A/AW/AD] 2) Adjustment Accuracy Adjustment accuracy targets are shown below. 2.1) The case of 1st order adjustment Parameter Offset adjustment accuracy Offset temp. drift adjustment accuracy Output span adjustment accuracy Sensitivity temp. adjustment accuracy Sensitivity supply voltage and temp. variation step Sample and hold circuit output error Offset adjustment accuracy Note1) Span adjustment accuracy Note2) Offset adjustment accuracy Note3) Symbol Min. Typ. Note4) Max. Note5) Units Cof Coft Csn Csnt 0.083 0.120 0.146 0.114 %FS %FS %FS %FS Cstv 0.057 %FS Cshe Cofall Csnall Call 0.0 0.146 0.194 0.194 %FS %FS %FS %FS 1.0 1.0 1.0 Description Note1) Cofall = (Cof^2+Coft^2)^(1/2) Note2) Csnall = (Csn^2+Csnt^2+Cstv^2+Cshe^2)^(1/2) Note3) Call = max(Cofall,Csnall) Note4) Temp. = 25ºC, VDD = 5V, G1 = 10x, G2 = 1.5x, G3 = 1.8x, Offset temp. drift 1st order coefficient = Min. or Max., Sensitivity temp. drift 1st order coefficient = Min., VOUT output band-limited effective (≤ 500Hz@Fs = 8.33kHz, ≤ 50Hz@Fs = 0.83kHz) Note5) Temp. = -40 to 105ºC, VDD = 5V ± 10%, 3.3V ± 10%, 3.0V ± 10%, G1/G2/G3 = Min. to Max., Each temp. coefficient = Min. to Max., VOUT output band-limited effective (≤ 500Hz@Fs = 8.33kHz, ≤ 50Hz@Fs = 0.83kHz) 2.2) The case of quasi 2nd order adjustment by piecewise linear approximation Typ. Parameter Symbol Min. Note9) Offset adjustment accuracy Offset temp. drift adjustment accuracy Offset temp. drift adjustment switching accuracy using the piecewise linear approximation method Output span adjustment accuracy Sensitivity temp. adjustment accuracy Sensitivity temp. adjustment switching accuracy using the piecewise linear approximation method Sensitivity supply voltage and temp. variation step Sample and hold circuit output error Offset adjustment accuracy Note6) Span adjustment accuracy Note7) Offset adjustment accuracy Note8) Max. Note10) Units Cof Coft 0.083 0.120 %FS %FS Coftc 0.0 %FS Csn Csnt 0.146 0.114 %FS %FS Csntc 0.0 %FS Cstv 0.057 %FS Cshe Cofall Csnall Call 0.0 0.146 0.194 0.194 %FS %FS %FS %FS 1.0 1.0 1.0 Description Note6) Cofall = (Cof^2+Coft^2)^(1/2) Note7) Csnall = (Csn^2+Csnt^2+Cstv^2+Cshe^2)^(1/2) Note8) Call = max(Cofall,Csnall) Note9) Temp. = 25ºC, VDD = 5V, G1 = 10x, G2 = 1.5x, G3 = 1.8x, Offset temp. drift 1st order coefficient = Min. or Max., Sensitivity temp. drift 1st order coefficient = Min., VOUT output band-limited effective (≤ 500Hz@Fs = 8.33kHz, ≤50Hz@Fs=0.83kHz) Note10) Temp. = -40 to 105ºC, VDD = 5V ± 10%, 3.3V ± 10%, 3.0V ± 10%, G1/G2/G3 = Min. to Max., Each temp. coefficient = Min. to Max., VOUT output band-limited effective (≤ 500Hz@Fs = 8.33kHz, ≤ 50Hz@Fs = 0.83kHz) * The adjustment accuracy is based on our definition. Please be careful the accuracy of product depends on the sensor characteristics and adjustment method. MS1600-E-00 2014/05 -5- CONFIDENTIAL [AK8999A/AW/AD] 3) External Temperature Sensor Characteristics The characteristics of an external temperature sensor are shown below. Parameter Sensor drive current (sink) Sensor drive current (source) Sensor temp. variation Sensor voltage @25C Symbol Tsdi Tsdo Tss Tsv25 Min. -2.4 550 Typ. -50 +50 -2.2 600 Max. -2.0 650 Units μA μA mV/C mV Description 50μA current drive 50μA current drive 4) Connection of Pressure Sensor and External Temperature Sensor The recommended connection examples of a pressure sensor and an external temperature sensor (Source or Sink current drive) are shown below. Sensor Voltage VS VS Source Current EXTMP EXTMP Sink Current Sensor Voltage AK8999A AK8999A VP VP VN VN Sensor drive source current Sensor drive sink current MS1600-E-00 2014/05 -6- CONFIDENTIAL [AK8999A/AW/AD] 5. Block Diagram and Functions VDD Regulator VS VDD Oscillator V_Bandgap V_Reference I_Reference V_Temp. EXTMP (internal or external) VDD track Gain Temp. track STV Offset Temp. track Offset_Temp. Gain Amp.1 Power ON Reset VOUT EEPROM Pressure Detector 2 Pressure Detector 1 Gain_Temp. DET2 / PTH DET1 VO Gain Amp.2 Gain Amp.3 S/H & SCF & Level Shift Offset Gain EEPROM & Control Register Gain Amplifier Block VSS V_ Common LPF VP VN Timing Logic Buffer & SMF SDI/O VOUT Serial I/F CSCLK Gain Amplifier Block, LPF, S/H&SCF& Level shifter, Buffer & SMF The set of these blocks amplifies, compensates and outputs the pressure sensor signal. The circuits from Gain Amplifier to S/H amplify, compensate, sample and hold the pressure sensor output by time sharing. The output stage, with an internal resistor of 146kΩ, band-limited with an external capacitor on VO pin, can provide a low impedance output via buffer. By enabling SCF and SMF, band limit can be done, eliminating the need for the external capacitors. The output reference voltage can be set with an integrated level shifter. Percentage indications define a 4800mVdc output as 100%, which is 60times magnified level of 80mVdc differential input. Block Gain Amp. 1/2/3 Gain (G1/2/3) Offset_Temp. Offset Offset Temp. track (G2) Functions Gain Amp.1 is a low-noise high-gain amplifier at the front. The differential signal is amplified by a factor of 10x typ. (5x to 70x). Gain Amp.2 converts the G1 differential output to single-ended with reference to 0.5*VDD and amplifies by a factor of 1.5x typ. (or 3.0x). Gain Amp.3 amplifies by a factor of 1.8x typ. (or 3.0x). Span voltage is adjusted with G1/2/3 Gain (G1/2: coarse adjustment, G3: fine adjustment). The pressure sensor offset voltage and offset temperature drift are compensated by using the preloaded compensation data in the EEPROM. The following value is converted into the input value at @5.0V. Offset adj. Adj. range Coarse: ±13 to ±373mV Fine: ±1 to ±34mV Adj. step Coarse: 2 to 53mV /step Fine: 0.01 to 0.27mV /step Offset temp. drift. adj. Adj. range ±0.04 to ±1.23mV/ ºC Adj. step 0.2 to 4.8μV/ºC step MS1600-E-00 2014/05 -7- CONFIDENTIAL Block STV VDD track Gain_Temp. (STV) LPF S/H & Level Shift & SCF Buffer & SMF Timing Logic Regulator Pressure Threshold Detector1/2 [AK8999A/AW/AD] Functions Supply voltage and sensitivity temperature variation compensation circuit. The pressure sensor sensitivity temperature drift and the supply voltage variation are compensated by using the magnitude of supply voltage variation and the preloaded compensation data in the EEPROM. Sensitivity temp. drift. adj. Adj. range -4000ppm/ ºC to +2500ppm/ ºC Adj. step 18ppm/ ºC step Anti-aliasing filter to eliminate the aliasing noise generated in the next sample and hold circuit (S/H). The cutoff frequency is fc=60kHz. S/H doubles the LPF output and samples and holds it. The output reference voltage can be changed. Output reference voltage adj. Adj. range 0.02*VDD to 0.98*VD Adj. step 0.002*VDD /step SCF is a low-pass filter without using the external capacitors. The cutoff frequency (fc: 1kHz /500Hz /250Hz) of the filter can be set by EEPROM. Buffer to provide 1.111x output and produce a band limited output with low impedance. 146kΩ internal resistance and an external capacitor (C) make the LPF characteristics. Change the external capacitance value according to the desired signal band for detection using the following equation: fc=1/(2*π* 146kΩ*C) (Hz) SMF is a low-pass filter (fc=10kHz) for eliminating the clock noise generated by the previous SCF. SMF is switched on or off in combination with the previous stage SCF using the EEPROM data. Generates timing sync signals for internal operation and sampling frequencies for sensor output signals. Sampling frequency (fs): 0.83kHz or 8.33kHz Constant voltage generator to drive the sensor. The drive voltage can be selected from the EEPROM depending on the supply voltage being used. Drive voltage: 2.2V@VDD:3, 3.3V ± 10%, 4.0/2.2V@VDD:5V ± 10% Two sets of pressure threshold detectors. The pressure threshold detection range can be individually selected depending on the EEPROM data. • Pressure above a certain value is detected • Pressure below a certain value is detected The DET1 and DET2/PTH pins go high when the detected pressure exceeds the threshold (the polarity change by EEPROM is possible). The detection threshold can be set by the input of DET2/PTH pin (in this case, Pressure Threshold Detector 2 cannot use) or using the EEPROM data. The hysteresis voltage can be adjusted at 2 bits, and it varies ratiometrically with respect to the supply voltage as well as the detection threshold. Note) The exact pressure determination cannot be achieved until the VOUT pin output is stabilized after power-up. MS1600-E-00 2014/05 -8- CONFIDENTIAL [AK8999A/AW/AD] Reference Section & Others Block Functions Generates the reference voltage or bias current required for each circuit. V_Bandgap The VREF voltage is adjusted to 1.0V. (VBG) VREF voltage adj. Resolution 3bits V_Reference Adj. step 1% / step (VREF) IREF current is adjusted to 1.0V, in state of connecting 1MΩ external resistor to VOUT I_Reference pin. (IREF) IREF current adj. Resolution 4bits Adj. step 2.8% / step Oscillator to generate timing sync signals for internal operation and sampling frequencies. Oscillation frequency is adjusted as the counter result reaches the expected Oscillator value, the internal counter counts for the period of CSCLK is high (2msec typ.). For the (OSC) detail, refer to the Functional Descriptions 1) Adjustment Procedure Description (Example). OSC adj. Resolution 4bits Adj. step 5% / step Temperature sensor converting the ambient temperature to voltage. Adjust the temperature sensor output voltage so that it is equal to VREF voltage at 25ºC.And it is also possible to select the external temperature sensor by EEPROM in the case where a pressure sensor and the AK8999A are separated physically. When the external V_temp. temperature sensor is chosen, it is driven by 50uA constant current which is sunk or (VTMP) sourced from the EXTMP pin. VTMP voltage adj.(internal) Resolution 6bits Adj. step 0.2% / step VTMP voltage adj.(external) Resolution 9bits (Coarse /Fine=3/6bits) Adj. step Coarse 10% /step / Fine 0.2% /step Generates analog circuit reference voltage 0.5*VDD. V_Common The internal power-up circuit causes it to start up within the settling time for stable (VCOM) analog operation. Power Up circuit is for stable analog operation upon power-up. Power ON In order to make the power-on reset effective, be sure to power up the supply voltage Reset(POR) from below 0.1*VDD. Serial interface for accessing EEPROM and control register (volatile memory). Serial I/F It accesses using the CSCLK pin and the VOUT pin. EEPROM & EEPROM and control register (volatile memory). Control Used to store compensation values and measurement modes and to set up the Register measurement modes for adjustment. MS1600-E-00 2014/05 -9- CONFIDENTIAL [AK8999A/AW/AD] 6. Pin Configurations 1) Wafer Configuration For the detail, please contact your local sales office or authorized distributor. 2) Package Outline (UQFN16) 9 CSCLK 10 DET1 DET2 11 /PTH 12 N.C. 13 VN 8 N.C. 14 VS 7 N.C. 15 VP 6 N.C. 5 N.C. 16 EXTMP 4 VDD VO 3 VOUT 2 1 VSS MS1600-E-00 2014/05 - 10 - CONFIDENTIAL [AK8999A/AW/AD] 7. Pin conditions PAD 1 Name VSS I/O 2 VO I 3 4 5-8 9 10 11 12 13 14 15 16 VOUT VDD N.C. CSCLK DET1 DET2 /PTH N.C. VN C load max. R load min. Type GND Description Resistive load connection prohibited ESCF[1:0]: Open when 1,2,3h Resistance load is connectable with VDD or VSS Pull-down resistor (100kΩ) included when SDI/O mode Adjustment mode Analog O 50pF I/O 100pF O 300pF 9.5k Analog CMOS 1M typ. Analog Power I O O I CMOS CMOS CMOS Analog I Analog O 30pF 1k Analog O 30pF 0.82k Analog I I 400pF Do not connect Pull-down resistor (100kΩ) included EPTH1[0] = 1h Do not connect EVD[1:0] = 3h Pull-down resistor (200kΩ) included EVD[1:0] = 0, 1, 2h Pull-down resistor (200kΩ) included VS VP EXTMP Analog Analog Do not connect when not in use 8. Pin Assignments and Functions PAD Name 1 VSS 2 VO 3 VOUT 4 VDD 5-8 N.C. 9 CSCLK 10 DET1 11 DET2 /PTH 12 13 N.C. VN 14 VS 15 VP 16 EXTMP Functions Negative voltage supply pin Capacitance connection pin for sensor signal band-limiting Sensor signal / Data I/O / Calibration interface pin Positive supply voltage pin Chip select / Serial clock pin Output pin for pressure threshold detection 1 Output pin for pressure threshold detection 2 / Pressure threshold detector 1 threshold external input Sensor differential signal input pin (-) Constant voltage supply pin for sensor drive Sensor differential signal input pin (+) External temperature sensor voltage input pin Start up Note1) VSS/ VDD/ 0.5*VDD VSS/ VDD/ 0.5*VDD - Pin conditions EINV1,2[0] : “0h” / “1h” Normal operation Normal operation - EINE1,2[0] : “1h” Normal operation Normal operation - VSS/VDD VDD/VSS VSS - Normal operation - Normal operation - Hi-z - - VSS Note1) VOUT and VO pin: In the case of EVOUT[1:0] = 0h, 1h, 2h DET1 and DET2/PTH pin: In the case of EINV1/2[0] = 0h, 1h MS1600-E-00 2014/05 - 11 - CONFIDENTIAL [AK8999A/AW/AD] 9. Level Diagram VDD: 5V VP G1 G2(D2S) G3 LPF S/H & SCF & Level Shift Buffer & SMF VN G=10 G=1.5 G=1.8 G=1 G=2 G=1.111 ING1=5 - 70 ING2=1.5, 3.0 ING3=1.8, 3.0 Level Shift +/-400mV 1200mV 1200mV VO LVS=0.02*VDD - 0.98*VDD 1) Level Shift : 0.02*VDD, Pressure : Positive 2160mV VOUT 0.93*VDD 2160mV VP-VN=80mV 4320mV 4800mV 0.5*VDD 0.02*VDD 2) Level Shift : 0.98*VDD, Pressure : Negative +/-400mV 1200mV 1200mV 2160mV 2160mV 0.98*VDD VP-VN=80mV 0.5*VDD 4320mV Level Shift 4800mV 0.068*VDD 3) Level Shift : 0.5*VDD, Pressure : Positive & Negative +/-200mV 600mV 600mV 1080mV 1080mV 2400mV VP-VN=40mV 0.5VDD 2160mV MS1600-E-00 2014/05 - 12 - CONFIDENTIAL [AK8999A/AW/AD] 10. Absolute Maximum Ratings Parameter Supply voltage Input voltage Input current Output current Storage temp. Symbol VDD VDIN IIN IOUT Min. -0.3 VSS - 0.3 -10 -10 Max. Units 6.5 V VDD + 0.3 V 10 mA 10 mA Description EEPROM retention characteristics 105C Note) Operation at or beyond these limits may result in permanent damage to the device. TST -55 125 C 11. Recommended Operating Conditions Parameter Operating temp. Supply voltage Symbol Ta VDD1 VDD2 VDD3 Min. -40 2.7 2.97 4.5 Typ. 3.0 3.3 5.0 Max. 105 3.3 3.63 5.5 Description Units C V EVD[1:0] = 0h V EVD[1:0] = 1h V EVD[1:0] = 2h, 3h 12. Electrical Characteristics 1) Supply Voltage Current (Refer to Functional Descriptions) VDD = 3, 3.3, 5V ± 10%, Ta = -40 to 105ºC, register default, unless otherwise noted Parameter Symbol Min. Typ. Max. Units Description Supply voltage VDD = 5V ± 10%, VS = 4V, IDD1 6900 8500 μA current 1 Fs = 8.33kHz, Note1) Supply voltage VDD = 3V ± 10%, VS = 2.2V, IDD2 4900 6200 μA current 2 Fs = 8.33kHz, Note1) Supply voltage VDD = 5V ± 10%, VS = 4V, IDD3 1700 2400 μA current 3 Fs = 0.83kHz, Note1) Supply voltage VDD = 3V ± 10%, VS = 2.2V, IDD4 1300 2000 μA current 4 Fs = 0.83kHz, Note1) Supply voltage current 5 VDD = 5V ± 10%, IDD5 100 150 μA (SCF & SMF ESCF[1:0] = 1h circuit) Supply voltage current 6 IDD6 150 250 μA VDD = 5V ± 10% (Pressure threshold detector 1/2) Supply voltage current 7 (External IDD7 150 250 μA VDD = 5V ± 10% temperature sensor drive circuit) Note) At the time of measurement, the VS pin connects 1kΩ load, the VOUT pin is connects no load, and the VP and VN pins supply 0.5*VS. VREF volgtage, VTMP voltage, IREF current and OSC frequency are complete with adjustment. Note1) SCF&SMFcircuit: Off, External temperature sensor drive circuit: Off MS1600-E-00 2014/05 - 13 - CONFIDENTIAL [AK8999A/AW/AD] 2) EEPROM Characteristics VDD = 3, 3.3, 5V ± 10%, Ta = -40 to 105ºC, register default, unless otherwise noted Parameter Symbol Min. Typ. Max. Units EEPROM write temp. Eta -40 85 C EEPROM endurance Etime 1000 Times EEPROM data retention Ehold Years 10 time(@105 ºC) 3) Digital DC Characteristics VDD = 3, 3.3, 5V ± 10%, Ta = -40 to 105ºC, register default, unless otherwise noted Parameter Symbol Pin Conditions Min. Typ. Max. Units High level input VIH Note1) 0.7*VDD V voltage Note1) Low level input VIL 0.3*VDD V voltage Note1) High level input IIH +10 +200 μA current Low level input IIL1 Note2) -10 +10 μA current 1 Note3) Low level input IIL2 -50 +50 μA current 2 Note4) High level output VOH IOH = -200 μ A 0.9*VDD V voltage Note4) Low level output VOL IOL = +200 μ A 0.1*VDD V voltage Note1) CSCLK (integrated 100kΩ pull-down resistor), VOUT (integrated 100kΩ pull-down resistor when SDI/O mode) Note2) CSCLK (integrated 100kΩ pull-down resistor) Note3) VOUT (integrated 100kΩ pull-down resistor when SDI/O mode) Note4) VOUT (when SDI/O mode), DET1, DET2/PTH 4) Power On/Off time and Analog circuit settling time for stable operation VDD = 3, 3.3, 5V ± 10%, Ta = -40 to 105ºC, register default, unless otherwise noted Parameter Symbol Min. Typ. Max. Units Description Power On/Off time Tidle 1 msec VDD pin voltage <0.1*VDD Settling time for Power On time (0.1*VDD to stable analog Tenable 700 μsec 0.8*VDD) 2msec > operation Note) Design reference value; no production test performed. 0.8*VDD VDD pin voltage Normal operation Tenable 0.1*VDD Tidle MS1600-E-00 2014/05 - 14 - CONFIDENTIAL [AK8999A/AW/AD] 5) Digital AC Characteristics VDD = 3, 3.3, 5V ± 10%, Ta = -40 to 105ºC, register default, unless otherwise noted Parameter Symbol Min. Typ. Max. Units Write time msec Twr_EEP1 5 100 (EEPROM address write) Write time (EEPROM batch write) Twr_EEP2 10 100 msec Write time (Register) Twr_REG 10 μsec msec Digital Mode Transition time Tinit 1.0 msec Analog Mode Transition time Tdigout 0.5 msec Data setup time Ts 100 msec Data hold time Th 100 μsec CSCLK high time Twh 0.5 100 μsec CSCLK low time Twl 0.5 100 nsec CSCLK→DO delay time Note1) Td 200 nsec CSCLK rising time Note 2) Tr 10 nsec CSCLK falling time Note 2) Tf 10 Note1) SDO load capacitance = 100pF Note2) Design reference value; no production test performed. [Serial I/F timing (Write)] Twr_EEP1/2 Ts Tinit Twh Th Twl Twr_REG 1 CSCLK ANALOG OUT VOUT 16 I2 1 D0 I2 Hi-z VOUT condition Analog Output Mode Digital Input Mode [Serial I/F timing (Read) ] Td 8 CSCLK VOUT A0 Td 9 Hi-Z Tdigout 16 D7 D0 ANALOG OUT VOUT condition Digital Input Mode Digital Output Mode Analog Output Mode [CSCLK Raising/Falling timing] Tr Tf 0.7VDD CSCLK 0.3VDD MS1600-E-00 2014/05 - 15 - CONFIDENTIAL [AK8999A/AW/AD] 6) Pressure Threshold Detector 1 & 2 VDD = 3, 3.3, 5V ± 10%, Ta = -40 to 105ºC, register default, unless otherwise noted Parameter Symbol Conditions Min. Typ. Max. Units Description Pressure Vdete EINE1[0] = 0h 0.1*VDD 0.9*VDD V detection EINE2[0] = 1h EPTH1[0] = 1h threshold External input range Pressure Vdet 0.500 0.500 0.500 V EPT1, 2[4:0] = 00h detection *VDD *VDD *VDD threshold -0.05 +0.05 Internal set value Pressure Vdet+ Max 0.900 V detection EPT1, 2[4:0] = 10h *VDD threshold Vdet0.125 V Min Internal set EPT1, 2[4:0] = 0Fh *VDD value Adjust. width Adjust. step Vdstp 0.025 V *VDD Hysteresis Vhys5+ Max 0.060 0.060 0.060 V voltage *VDD *VDD *VDD VDD = 5V ± 10% Adjust. width EHYS1, 2[1:0] = 1h -0.055 +0.055 Vhys5- Min 0.030 0.030 0.030 V *VDD *VDD *VDD VDD = 5V ± 10% EHYS1, 2[1:0] = 2h -0.03 +0.03 Vhys3+ Max 0.060 0.060 0.060 V *VDD *VDD *VDD VDD = 3, 3.3V ± 10% EHYS1, 2[1:0] = 1h -0.035 +0.035 Vhys3- Min 0.030 0.030 0.030 V *VDD *VDD *VDD VDD = 3, 3.3V ± 10% EHYS1, 2[1:0] = 2h -0.02 +0.02 Adjust. step Vhysst 0.010 V *VDD Pressure Tdetr 180 μsec Note1) ESCF[1:0] = 0h detection time Pressure Tdetf 180 μsec Note1) ESCF[1:0] = 0h non-detection time Note1) Design reference value; no production test performed. PTH Vhys VOUT 0.5*VDD 0.5*VDD DET1, 2 Tdetr Tdetf MS1600-E-00 2014/05 - 16 - CONFIDENTIAL [AK8999A/AW/AD] 7) Analog Characteristics 7.1) Reference Section 7.1.1) Reference Section Characteristics VDD = 3, 3.3, 5V ± 10%, Ta = -40 to 105ºC, register default, unless otherwise noted Parameter Symbol Conditions Min. Typ. Max. Description Units AM[3:0] = 1h VOUT out VREF voltage Vr0 0.97 1.0 1.04 V @25 ºC Unadjusted VREF adj. width VREF adj. step VS voltage Vr+ VrVrstp VS4 VS2 IREF current Ir0 Ir+ IREF adj. width Ir- IREF adj. step OSC freq. Irstp Fr0 OSC adj. width Fr+ Fr- OSC adj. step VTMP voltage Frstp Vt0 Vt0Vt0+ Vtr+ VTMP adj. width (Coarse) Coarse adj. step VTMP adj. width (fine) VtrVtrstp Vtf+ Vtf- Max EVR[2:0] = 3h Min EVR[2:0] = 4h After VREF adj. Load resistance 1kΩ VS pin out After VREF adj. Load resistance 0.82kΩ VS pin out AM[3:0] = 2h VOUT out mV 4.12 mV V 2.134 2.20 2.266 V 0.8 1.00 1.2 μA @25 ºC Unadjusted 0.24 μA -0.17 μA With respect to Ir0 With respect to Ir0 0.750 0.028 1.000 1.250 μA MHz 384 kHz -251 kHz 0.936 50 1.0 1.062 0.900 1.0 1.100 0.930 1.03 1.130 Fine adj. step Vtfstp ETMP[1:0] = 2h VTMP temp Vt variation Note1) Design reference value; no production test performed. MS1600-E-00 -40 With respect to Vr0 With respect to Vr0 10 4.00 Max EFR[3:0] = 7h Min EFR[3:0] = Bh ETMP[1:0] = 2h AM[3:0] = 4h VOUT output ETMP[1:0] = 0h AM[3:0] = 4h VOUT output ETMP[1:0] = 1h AM[3:0] = 4h VOUT output Max ETMP[1:0] = 0, 1h ETM[8:6] = 6h Min ETMP[1:0] = 0, 1h ETM[8:6] = 2h ETMP[1:0] = 0, 1h Max ETM[5:0] = 20h Min ETM[5:0] = 1Fh mV 3.88 Max EIR[3:0] = 7h Min EIR[3:0] = 8h AM[3:0] = 3h VOUT out +30 kHz V @25 ºC Unadjusted With respect to Fr0 With respect to Fr0 @25 ºC Unadjusted @25 ºC Unadjusted @25 ºC Unadjusted +200 mV With respect to Vt0 -200 mV With respect to Vt0 100 +64 mV mV -62 mV 2.0 4.6 mV mV/C With respect to Vt0 With respect to Vt0 Note1) 2014/05 - 17 - CONFIDENTIAL [AK8999A/AW/AD] 7.1.2) Reference Section (packaged version only) Characteristics VDD = 5V ± 10%, Ta = -40 to 105ºC, unless otherwise noted Parameter Symbol Conditions Min. Typ. Max. Units Description @25 ºC VREF voltage Vr0P 0.99 1.0 1.01 V After adj. 3.88 4.00 4.12 @25 ºC VS4P Load resistance 1kΩ V After adj. VS voltage 2.134 2.20 2.266 @25 ºC VS2P Load resistance 0.82kΩ V After adj. @25 ºC IREF current Ir0P 0.9 1.0 1.1 μA After adj. @25 ºC OSC freq. Fr0P 0.9 1.0 1.1 MHz After adj. @25 ºC VTMP voltage Vt0P ETMP[1:0]=2h 0.994 1.0 1.006 V After adj. Note) AK8999A is shipped with adjustment at VDD=5V&VS=4V (EVD[1:0]=3h) and internal temperature sensor use (ETMP[1:0]=2h). If VDD=5V&VS=2.2V (EVD[1:0]=1h), VDD=3.3V&VS=2.2V(EVD[1:0]=2h), VDD=3V&VS=2.2V(EVD[1:0]=3h) and external temperature sensor use (ETMP[1:0]=0, 1h) are the actual operating condition, readjustment is required 7.2) Gain Amplifier etc. Unless otherwise specified, the following requirements apply. • Reference Section is complete with adjustment. • For supply voltage of 5V (3V), sensor drive voltage of 4V (2.2V), total gain of 60x (the level diagram includes G1 gain of 10x, G2 gain of 1.5x and G3 gain of 1.8x) and Level shift 0.02*VDD, the output voltage 4800mV (2400mV) is set as 100% based on a differential input of 80mV (40mV). 7.2.1) Overall Characteristics VDD = 3, 3.3, 5V ± 10%, Ta = -40 to 105ºC, register default, unless otherwise noted Parameter Symbol Conditions Min. Typ. Max. Units Description Std. gain Gtyp VP/VN→VOUT 60 times Input common Vicom 0.45VS 0.5*VS 0.55VS V voltage Output common Vcom0 VP/VN→VOUT 0.5*VDD V voltage VP = VN = 0.5*VS Vmax+ VP/VN→VOUT 0.98 V VP-VN = VSS or VDD *VDD Max. output range Vmax0.02 V *VDD MS1600-E-00 2014/05 - 18 - CONFIDENTIAL [AK8999A/AW/AD] 7.2.2) Noise Characteristics VDD = 3, 3.3, 5V ± 10%, Ta = -40 to 105ºC, register default, unless otherwise note Parameter Symbol Conditions Min. Noise Typ. Max. note1) 230 note2) 530 Units Description VP/VN→VOUT μVrms @1Hz External feedback 100kHz Nout1 capacitance 2.2nF ESCR[0]=1h VP/VN→VOUT 250 550 μVrms @1Hz Nout2 ESCF[1:0]=1h 100kHz ESCR[0]=1h note1) VDD = 5V, Temp. = 25C, Total gain: 60x (G1 gain: 10x, G2 gain: 1.5x, G3 gain: 1.8x, S/H gain: 2x, Buffer gain: 1.111x), Output reference voltage = 0.02*VDD, Sampling frequency = 8.33kHz, Sensor drive voltage=4V, Internal temperature sensor use, Offset Voltage = 0mV, Offset temp. drift 1st order coefficient = 0mV/C, Span Voltage = 80mV, Sensitivity temp. drift 1st order coefficient = 0ppm/C. Design reference value; no production test performed. note2) Total gain: 60x@25C (G1 gain: 10x, G2 gain: 1.5x, G3 gain: 1.8x, S/H gain: 2x, Buffer gain: 1.111x), Output reference voltage = 0.02*VDD, Sampling frequency = 8.33kHz, Internal temperature sensor use, Sensor drive voltage=4V(VDD=5V±10%)/2.2V(VDD=3V, 3.3V±10%), Offset Voltage@25C = ±35mV(VS = 4V)/±19.25mV(VS = 2.2V), Offset temp. drift 1st order coefficient = ±0.08mV/C (VS = 4V)/±0.044mV/C (VS = 2.2V), Span Voltage @25C = 0 to 80mV(VS = 4V) / 0 to 40mV(VS = 2.2V), Sensitivity temp. drift 1st order coefficient = -4000 to +2500ppm/C. Design reference value; no production test performed. 7.2.3) G1/2 Gain Adjustment Circuit VDD = 3, 3.3, 5V ± 10%, Ta = -40 to 105ºC, register default, unless otherwise note Parameter Symbol Conditions Min. Typ. Max. Units Description Measurement in test mode Unadjusted G1/2 Vg1 VP-VN = 80mV 1150 1200 1250 mV output voltage VDD = 5V ± 10% Vg2 VP-VN = 40mV 550 600 650 mV VDD = 3, 3.3 ± 10% G1 adjustment G1sc+ EIG[3:0] = Ch 5 times range G1scEIG[3:0] = 0h 70 times Adj. Step G1stp 2,3,5,10 times G2 G2sc1+ EIG[4] = 0h 3 times G2sc1- EIG[4] = 1h 1.5 times MS1600-E-00 2014/05 - 19 - CONFIDENTIAL [AK8999A/AW/AD] 7.2.4) Offset Voltage Adjustment Circuit VDD = 3, 3.3, 5V ± 10%, Ta = -40 to 105ºC, register default, unless otherwise note Parameter Symbol Conditions Min. Typ. Max. Units Description Measurement in test mode Unadjusted output Vo01 VDD = 3, 3.3, 5V ± 10% 0.5*VDD 0.5*VDD 0.5*VDD V voltage -0.15 +0.15 Offset coarse adj. Ocr5+ EOCR[3] = 0h +11200 mV DAC adj. range EOCR[2:0] = 7h VDD = 5V ± 10% Ocr5EOCR[3] = 1h -11200 mV EOCR[2:0] = 7h VDD = 5V ± 10% Ocr3+ EOCR[3] = 0h +5600 mV EOCR[2:0] = 7h VDD = 3, 3.3 ± 10% Ocr3EOCR[3] = 1h -5600 mV EOCR[2:0] = 7h VDD = 3, 3.3 ± 10% Adj. step Ocr5stp VDD = 5V ± 10% 1600 mV Ocr3stp VDD = 3, 3.3 ± 10% 800 mV Offset fine adj. Ocf5+ EOCF[7] = 0h +1016 mV DAC adj. range EOCF[6:0] = 3Fh VDD = 5V ± 10% Ocf5EOCF[7] = 1h -1016 mV EOCF[6:0] = 3Fh VDD = 5V ± 10% Ocf3+ EOCF[7] = 0h +508 mV EOCF[6:0] = 3Fh VDD = 3, 3.3 ± 10% Ocf3EOCF[7] = 1h -508 mV EOCF[6:0] = 3Fh VDD = 3, 3.3 ± 10% Adj. step Ocf5stp VDD = 5V ± 10% 8 mV Ocf3stp VDD = 3, 3.3 ± 10% 4 mV Note) The case of ESCR[0] = 1h. MS1600-E-00 2014/05 - 20 - CONFIDENTIAL [AK8999A/AW/AD] 7.2.5) Span Voltage Adjustment Circuit VDD = 3, 3.3, 5V ± 10%, Ta = -40 to 105ºC, register default, unless otherwise note Parameter Symbol Conditions Min. Typ. Max. Units Description Measurement in test mode after offset voltage adjustment Unadjusted Vs01a VP-VN = 80mV 1910 2160 2410 mV Span voltage VDD = 5V ESCR[0] = 1h Vs01b VP-VN = 80mV 1590 1800 2010 mV VDD = 5V Vs02a VP-VN = 40mV 930 1080 1230 mV VDD = 3, 3.3V ESCR[0] = 1h Vs02b VP-VN = 40mV 770 900 1030 mV VDD = 3, 3.3V Span adj. range Sc1+ ESC[7:0] = 00h 1.80 times ESCR[0] = 1h Sc1ESC[7:0] = FFh 1.10 times ESCR[0] = 1h Sc2+ ESC[7:0] = 00h 3.00 times ESCR[0] = 0h Sc2ESC[7:0] = FFh 1.56 times ESCR[0] = 0h Adj. Step Sc stp1 N = 0 - +255 (275-0.2*N) times ESCR[0] = 1h /(153+0.2*N) Sc stp2 N = 0 - +255 (275-0.2*N) times ESCR[0] = 0h /(91+0.2*N) 7.2.6) Offset Temperature Drift & Sensitivity Temperature Drift Adjustment Circuit 7.2.6.1) Offset Temperature Drift Adjustment Circuit VDD = 3, 3.3, 5V ± 10%, Ta = -40 to 105ºC, register default, unless otherwise note Parameter Symbol Conditions Min. Typ. Max. Description Units Measurement in test mode after offset voltage and span voltage adjustment 1 st order coeff. DO5+ EOTP,N[8] = 0h +36.8 Adj. range EOTP,N[7:0] = FFh mV/C VDD = 5V ± 10% DO5EOTP,N[8] = 1h -36.8 EOTP,N [7:0] = FFh mV/C VDD = 5V ± 10% DO3+ EOTP,N[8] = 0h +18.4 EOTP,N[7:0] = FFh mV/C VDD = 3, 3.3 ± 10% DO3EOTP,N[8] = 1h -18.4 EOTP,N[7:0] = FFh mV/C VDD = 3, 3.3 ± 10% Adj. step DO5 stp VDD = 5V ± 10% 0.144 mV/C DO3 stp VDD = 3, 3.3 ± 10% 0.072 mV/C Note) Design reference value; no production test performed. The case of ESCR[0] = 1h. MS1600-E-00 2014/05 - 21 - CONFIDENTIAL [AK8999A/AW/AD] 7.2.6.2) Sensitivity Temperature Drift Adjustment Circuit VDD = 3, 3.3, 5V ± 10%, Ta = -40 to 105ºC, register default, unless otherwise note Parameter Symbol Conditions Min. Typ. Max. Description Units Measurement in test mode after offset voltage and span voltage adjustment 1 st order DS1+ ESTP/N[8] = 0h +2500 ppm/C coeff. ESTP/N[7:0] = 8Bh Adj. range DS1ESTP/N[8] = 1h -4000 ppm/C ESTP/N[7:0] = DEh Adj. step DS stp 18 ppm/C Note) Design reference value; no production test performed. 7.2.7) LPF, S/H & Buffer VDD = 3, 3.3, 5V ± 10%, Ta = -40 to 105ºC, register default, unless otherwise note Parameter Symbol Conditions Min. Typ. Max. Units Description Measurement in test mode after offset voltage and span voltage adjustment LPF cufoff Fc1 kHz 40 60 80 frequency S/H&Buffer gain SHG 1.935 2.222 2.523 times S/H&Buffer out SHerr mV -65 65 pre-adj. error BUF gain adj. Bufg times 1.000 1.111 1.222 width Vbuf+ Load resistance 0.98 V 9.5kΩ *VDD VOUT output (to VDD or VSS) voltage range Vbuf0.02 V *VDD BUF feedback Rbuf k 102 146 190 resistor value 7.2.8) Level shift VDD = 3, 3.3, 5V ± 10%, Ta = -40 to 105ºC, register default, unless otherwise note Conditions Min. Typ. Max. Units Description Measurement in test mode after offset voltage and span voltage adjustment Output reference Vlv+ 1.00 V Note1) Max Voltage ELV[8] = 1h *VDD ELV[7:0] = FFh adj. width (Level shift) Vlv0.00 V Note1) Min *VDD ELV[8] = 0h ELV[7:0] = FFh Vlstp 0.002 V Adj. step *VDD Note1) It is limited from 0.02*VDD to 0.98*VDD by the VOUT output range (Vbuf+, Vbuf-). Parameter Symbol MS1600-E-00 2014/05 - 22 - CONFIDENTIAL [AK8999A/AW/AD] 7.2.9) SCF & SMF VDD = 3, 3.3, 5V ± 10%, Ta = -40 to 105ºC, register default, unless otherwise note Conditions Min. Typ. Max. Units Description Measurement in test mode after offset voltage and span voltage adjustment SCF&SMF Fc1 ESCF[1:0] = 1h 0.8 1.0 1.2 kHz freq. response 10Hz referenced -3dB Fc2 ESCF[1:0] = 2h 400 500 600 Hz 10Hz referenced -3dB Fc3 ESCF[1:0] = 3h 200 250 300 Hz 10Hz referenced -3dB SCFG1 ESCF[1:0] = 1h SCF&SMF 1.000 1.111 1.222 times gain Parameter Symbol 7.2.10) External temperature sensor drive circuit VDD = 3, 3.3, 5V ± 10%, Ta = -40 to 105ºC, register default, unless otherwise note Parameter Symbol Conditions Min. Typ. Max. Units Description Temp. sensor sink current Temp. sensor source current Input voltage range (sink) Input voltage range (surce) Iconst1 After IREF adj. Iconst2 Extpsi4 After IREF adj. ETMP[1:0] = 1h VS = 4V Extpsi2 VS = 2.2V Extpso ETMP[1:0] = 1h MS1600-E-00 45 50 55 μA -55 -50 -45 μA 3160 3400 3610 mV 1350 1600 1810 mV 392 600 866 mV 2014/05 - 23 - CONFIDENTIAL [AK8999A/AW/AD] 13. Operation Sequence Settling time for stable analog operation 0.83kHz: 70μsec (35), 8.33kHz: 70μsec (35) CLK (1=500kHz) Approx. 500μsec No. 0 00 status 35 Pressure measurement period 30 02 01 Start Up 0 Idling period 0.83kHz: 1010μsec (505) 8.33kHz: 0μsec (0) 60 20 PU0 61 30 STV 40 MSR Idel VDD VDD & Sensor temp. STV variation adj. S/H1&2 VOUT DET1/2 No detection “L” set Detection “L” set No detection “H” set Idling period 0.83kHz: 1010μsec (505) 8.33kHz: 0μsec (0) Settling time for stable analog operation 0.83kHz: 70μsec (35), 8.33kHz: 70μsec (35) CLK (1=500kHz) NO. VOUT・(1) VOUT initial value output （VSS or VDD or 0.5*VDD) Detection “H” set 0 status 12 11 30 Idel Idling period 0.83kHz: 1010μsec (505) 8.33kHz: 0μsec (0) Pressure measurement period 60 30 20 30 STV PU1 61 40 MSR Idel VDD VDD & Sensor temp. STV variation adj. S/H1&2 VOUT DET1/2 VOUT・(n-1) VOUT ・(n) Detection “H” set Detection “H” ((n-1)th judge) Detection “L” set Detection “L” ((n-1)th judge) MS1600-E-00 2014/05 - 24 - CONFIDENTIAL [AK8999A/AW/AD] ■ Description of Operation Timing Status (pressure detection circuit effective) State Start Up No. 00 CLK Operations It is the time until analog circuits operate stably. Analog reference circuits as VREF, IREF, etc. start up and adjusted output reference voltage (VSS or VDD or 0.5*VDD) is output from the VOUT pin. PU0 01 CLK = 30 Clock count start Analog circuits startup 02 CLK = 0 or 5 Ta = 25C detected comparator operation Note1) STV 20 CLK = 30 STV circuits operation MSR 30 CLK = 30 Result of pressure correction is output from VOUT pin. Idel 40 CLK = 0 or 505 Idling With Fs = 8.33kHz, no idling and in continuous operation. Idling period Fs = 0.83kHz 505 CLK Fs = 8.33kHz 0 CLK PU1 11 CLK = 0 or 30 Clock count start Analog circuits startup Note2) 12 CLK = 0 or 5 Ta = 25C detected comparator operation Note1) ： ： ： Note1) Only operation in the quasi 2nd order correction mode by piecewise linear approximation Note2) Only operation in the Fs = 0.83kHz mode MS1600-E-00 2014/05 - 25 - CONFIDENTIAL [AK8999A/AW/AD] 14. Adjustment Sequence note) EEPROM Address is indicated by “Add”, Control Register Address is indicated by “CAdd”. Please refer the digital part flow chart for EEPROM / Control Register writing and reading. Power ON EEPROM Write Enable set (Add 1Eh D[0] set) EEPROM initialize (Add 1Fh D[7:0] set) Offset temperature adjustment (Add 03h D[0] & 04h D[7:0] set) VTMP adjustment (CAdd 00h D[3:0] set Add 10h D[6:4] & 11h D[5:0] set) Level shift adjustment (CAdd 00h D[3:0] set Add 03h D[4] & 08h D[7:0] set) ex. Pressure:100kPa Span temperature adjustment (Add 03h D[2] & 06h D[7:0] set) Gain(G1/G2) set (Add 0Ch D[4:0] set) ex. Ta:-40C Control Register Access set (Add 1Dh D[0] set) Measurement mode routine ex. Ta:25C ex. Pressure:0kPa VREF adjustment (CAdd 00h D[3:0] set Add 0Fh D[2:0] set) IREF adjustment (CAdd 00h D[3:0] set Add 0Fh D[7:4] set) OSC adjustment (CAdd 00h D[3:0] set Add 10h D[3:0] set) ex. Pressure:100kPa Span fine adjustment (Add 02h D[7:0] set) ex. Pressure:0kPa Pressure Detector 1 setting routine ex. Pressure:0kPa Offset adjustment (Add 00h D[3:0] & 01h D[7:0] set) Level shift set (Add 03h D[4] & 08h D[7:0] set) ex. Pressure:0kPa Pressure Detector 2 setting routine Offset temperature adjustment (Add 03h D[1] & 05h D[7:0] set) Control Register Access set (Add 1Dh D[7] set) ex. Pressure:100kPa Span temperature adjustment (Add 03h D[3] & 07h D[7:0] set) ex. Pressure:100kPa Span adjustment (Add 02h D[7:0] set) EEPROM Write Enable set (Add 1Fh D[0] set) Power OFF ex. Ta:25C ex. Ta:105C ex. Pressure:0kPa ex. Pressure:0kPa Offset fine adjustment (Add 01h D[7:0] set) MS1600-E-00 2014/05 - 26 - CONFIDENTIAL [AK8999A/AW/AD] Measurement mode routine Supply voltage & Drive voltage set (Add 0Dh D[2:1] set) Sampling freq. set (Add 0Dh D[0] set) SCF ON / OFF & SCF fc set (Add 0Dh D[4:3] set) VTMP Internal/External set (Add 0Dh D[6:5] set) Vp / Vn set (Add 0Dh D[7] set) VOUT Start Up set (Add 0Eh D[1:0] set) Pressure Threshold Detector set (Add 0Bh D[4] set) (Add 09h/0Ah D[6] set) END Note) EEPROM Address is indicated by “Add”, Control Register Address is indicated by “CAdd”. MS1600-E-00 2014/05 - 27 - CONFIDENTIAL [AK8999A/AW/AD] Pressure Threshold Detector 1 setting routine Pressure Threshold Detector 2 setting routine Function ON/OFF check (Add 09h D[6] Function ON/OFF check (Add 0Ah D[6] D[6] : 1 D[6] : 0 D[6] : 1 D[6] : 0 Output polarity set (Add 09h D[7] set) Output polarity set (Add 0Ah D[7] set) Threshold function set (Add 09h D[5] set) Threshold function set (Add 0Ah D[5] set) Detection threshold set (Add 09h D[4:0] Detection threshold set (Add 0Ah D[4:0] Detection threshold check (CAdd 00h D[3:0] set) Detection threshold check (CAdd 00h D[3:0] set) Detection Threshold Hysteresis set (Add 0Bh D[1:0] set) Detection threshold Hysteresis set (Add 0Bh D[3:2] set) Detection threshold Hysteresis check (CAdd 00h D[3:0] set) Detection threshold Hysteresis check (CAdd 00h D[3:0] set) END END Note) EEPROM Address is indicated by “Add”, Control Register Address is indicated by “CAdd”. MS1600-E-00 2014/05 - 28 - CONFIDENTIAL [AK8999A/AW/AD] 15. Functional Descriptions 1) Adjustment Procedure Description (Example) The adjustment procedure for the AK8999A follows (See “Adjustment Sequence”). Note) Keep the sequence as adjustment of VREF adjustment, IREF adjustment, OSC adjustment, and VTMP adjustment in turn. If VREF adjustment and IREF adjustment are performed after OSC adjustment, adjusted OSC frequency will shift. The EEPROM address is referred to as “address”, while the control register (volatile memory) address is referred to as “C address”. 1.1) VREF Adjustment (completed when shipped in package form) The reference voltage is adjusted to 1.0V by VREF voltage adjustment EEPROM (address: 0Fh, data: EVR[2:0]). Adjusting the VREF voltage also means adjustment of the sensor drive voltage (VS). VREF voltage is observed at VOUT pin (See “Recommended External Circuits”) while the CSCLK pin High (CSCLK High Time) after the writing of an adjustment mode register (C address: 00h, data: AM[3:0] = 1h). Twr_REG 1 4 9 CSCLK High Time 16 1 CSCLK VOUT Hi-z Analog Output VREF monitor I2 1.2) IREF Adjustment (completed when shipped in package form) The reference current is adjusted to 1.0µA. The external resistor (1M) is connected to VOUT pin. Reference current is supplied to the external resistor, and IREF current adjustment EEPROM (address: 0Fh, data: EIR[3:0]) is adjusted so that the voltage across the both ends of the external resistor is set to 1.0V. And it can adjust more accurate by taking into consideration the input impedance (input resistance) of adjustment equipment. With 1M external resistor to the VOUT pin, it is adjusted in voltage domain. The external 1M should be connected only at the time of IREF adjustment. When with resistance 1M is connected always in outside, please be careful of the input impedance of adjustment equipment. The input impedance of adjustment equipment should become more than 10G. IREF current is observed at VOUT pin (See “Recommended External Circuits”) while the CSCLK pin High (CSCLK High Time) after the writing of an adjustment mode register (C address: 00h, data: AM[3:0] = 2h). Twr_REG 1 4 9 CSCLK High Time 16 1 CSCLK VOUT Hi-z Analog Output IREF monitor MS1600-E-00 I2 2014/05 - 29 - CONFIDENTIAL [AK8999A/AW/AD] 1.3) OSC Adjustment (completed when shipped in package form) The intermittent operation control clock is adjusted to 1000kHz. Oscillation frequency can be adjusted without monitoring frequency directly. The high level for the fixed period (2.0msec ± 1%) is inputted from the CSCLK pin after the writing of an adjustment mode register (C address: 00h, data: AM[3:0] = 3h). The internal clock pulses are counted in the integrated counter circuit, and the count value is stored in the control register (C address: 01h, data: CT[7:0]). The adjustment data (address: 10h, data: EFR[3:0]) for oscillation frequency is calculated from the stored count value. The adjustment can be done within 1000kHz ± 5% accuracy by writing the adjustment data in EEPROM. Since the error of High period turns into an adjustment error of frequency, please set period as 2.0ms ± 1%. Twr_REG 1 4 9 Tcont=2.0ms±1% 16 VOUT 1 Pulse Count. CSCLK Analog Output I2 The explanation of oscillation frequency adjustment data (address: 10h, data: EFR[3:0]) is as follows. The count value stored in the control register (C address: 01h, data: CT[7:0]) is read for the ratio check. A ratio will be 0% (ideal value), when the High level period of CSCLK pin is 2 msec and the frequency of the internal oscillator is 1000kHz. The ratio varies from 0% by the error of High level period and the frequency variation of the internal oscillator. And the High time which can be set up becomes a range from which a ratio will be -99% to 154%. Be aware that the error is easily affected when the ratio is small. The counter value shown as FF hex means overflow, please measure again by changing High level period. Please set the adjustment data of oscillation frequency as the sum of the ratio of CT [7:0] data and the ratio of EFR [3:0] data is close to 0%. Address : 01 hex D[7:0]= CT[7:0] CT[7:0] Count value Dec Hex Bin (time) 0 00 00000000 0 1 01 00000001 1 ： ： ： ： 98 62 01100010 98 99 63 01100011 99 100 64 01100100 100 101 65 01100101 101 102 66 01100110 102 ： ： ： ： 254 FE 11111110 254 255 FF 11111111 - MS1600-E-00 Ratio (%) 0 -99 ： -2 -1 0 1 2 ： 154 - Description Default Ideal value Counter error 2014/05 - 30 - CONFIDENTIAL Address : 10 hex D[3:0] = EFR[3:0] EFR[3:0] Ratio Frequency Δf Dec Hex Bin (%) (kHz) -5 B 1011 -34 -251 -4 C 1100 -25 -197 -3 D 1101 -17 -146 -2 E 1110 -11 -99 -1 F 1111 -5 -52 0 0 0000 0 0 1 1 0001 5 49 2 2 0010 10 106 3 3 0011 14 162 4 4 0100 18 224 5 5 0101 22 274 6 6 0110 25 329 7 7 0111 28 384 Note1) Hex 8 to A are prohibited for setup. [AK8999A/AW/AD] Description Default When High level period is not 2msec, the ideal value of CT [7:0] can be calculated as follows. Considering the calculated ideal value as 100%, and a ratio should be redefined. Please set the adjustment data of oscillation frequency as the sum of the ratio of CT [7:0] data and the ratio of EFR [3:0] data is close to 0%. Count value[time] = High time[msec] / 2 * 100 ex.) In the case of 3 msec, 100time → 150time. 1.4) VTMP Adjustment (completed when shipped in package form) Temperature sensor output (VTMP) voltage is adjusted to match the VREF voltage. When the external temperature sensor is used, connect the external temperature sensor to the EXTMP pin, and set up a measurement mode 1 EEPROM (address: 0Dh, data: ETMP[1:0] = 0 or 1h). VTMP voltage is observed at VOUT pin while the CSCLK pin High (CSCLK High Time) after the writing of an adjustment mode register (C address: 00h, data: AM[3:0] = 4h). *At the VTMP adjustment using the external temperature sensor, the External Temperature Sensor Drive circuit is normal ON in the sampling frequency 8.33kHz mode (ESF[0] = 0h). If the actual operationg condition is the sampling frequency 0.83kHz mode (ESF[0] = 1h), AK8999A operates intermittent. The external temoperature sensor output voltage may be different from the voltage after the VTMP adjustment. Twr_REG 1 4 9 CSCLK High Time 16 1 CSCLK VOUT Hi-z Analog Output VTMP monitor MS1600-E-00 2014/05 - 31 - I2 CONFIDENTIAL [AK8999A/AW/AD] 1.5) S/H Circuit Output Error Adjustment The S/H circuit output voltage is adjusted to become 0.5*VDD at VOUT pin by using the Output reference voltage adjustment EEPROM (address: 03h, 08h, data: ELV[8], ELV[7:0]). Twr_REG 1 4 9 CSCLK High Time 16 1 CSCLK VOUT Hi-z Analog Output Level shift monitor I2 1.6) Input gain (G1/G2) setup Set up G1/G2 gain so that Gain Amp.1/2 output voltages become the ranges (In the case of VDD = 5V, G1 1600mV, G2 1850mV). The voltage and temperature coefficient which are used for calculation is as follows. The offset voltage and the span voltage at 25C take the MAX values of the pressure sensor to be used. And the offset voltage temperature drift coefficient and the sensitivity temperature drift coefficient take the MIN values (minus polarity) of the pressure sensor to be used. Voff25: Offset voltage of the pressure sensor@25C Vsp25: Span voltage of the pressure sensor @25C Ktoff: Offset voltage temperature drift coefficient of the pressure sensor (MIN value) Ktsp: Sensitivity temperature drift coefficient of the pressure sensor (MIN value) ■ In the case of VDD = 5V and temperature = -40 to 105C Gain Amp.1 output = G1*(Voff25+Vsp25+ktoff*(-40[C]-25[C])+Vsp25*ktsp*(-40[C]-25[C])) 1600mV Gain Amp.2 output = G1*G2*(Vsp25+Vsp25*ktsp*(-40[C]-25[C])) 1850mV ■ In the case of VDD = 3.3V/3.0V and temperature = -40 to 105C Gain Amp.1 output = G1*(Voff25+Vsp25+ktoff*(-40[C]-25[C])+Vsp25*ktsp*(-40[C]-25[C])) 750mV/750mV Gain Amp.2 output = G1*G2*(Vsp25+Vsp25*ktsp*(-40[C]-25[C])) 990mV/850mV MS1600-E-00 2014/05 - 32 - CONFIDENTIAL [AK8999A/AW/AD] 1.7) Offset Voltage Adjustment The offset voltage for the pressure sensor is adjusted including the AK8999A internal error by using the offset voltage adjustment EEPROM (address: 00h, 01h, data: EOCR[3:0], EOCF[7:0]). ■Offset Voltage Adjustment Example (@VDD:5V) EOCR[3]: Offset voltage coarse adjustment sign bit If unadjusted output is more than 0.5*VDD, set EOCR[3] = 1h. If unadjusted output is less than 0.5*VDD, set EOCR[3] = 0h. EOCR[2:0]: Offset voltage coarse adjustment: Adjust in 1600 mV steps. EOCF[7]: Offset voltage fine adjustment sign bit If unadjusted output is more than 0.5*VDD, set EOCF[7] = 1h. If unadjusted output is less than 0.5*VDD, set EOCF[7] = 0h. EOCF[6:0]: Offset voltage fine adjustment: Adjust in 8 mV steps. When the offset voltage is +360mV (0.5*VDD reference), set EOCF[7] = 1h and EOCF[6:0] = 45dec. 360[mV]-(8[mV]*45[dec]) = 0.0[mV] 1.8) Output Reference Voltage Adjustment Adjust the output reference voltage. The output reference voltage is adjusted by using the output reference voltage adjustment EEPROM (address: 03h, 08h, data: ELV[8], ELV[7:0]). ■Output Reference Voltage Adjustment Example (@VDD:5V) When the output reference voltage is 100mV, set ELV[8] = 0h and ELV[7:0] = 240dec. 2500[mV]+(-0.002*240[dec])*5000[mV] = 100[mV] 1.9) Output Span Voltage Adjustment The output span voltage for the connected pressure sensor is adjusted, including the AK8999A internal error, by using the output span voltage adjustment EEPROM. (address: 00h, 02h, data: ESCR[0], ESC[7:0]) In the case, the output span voltage cannot be adjusted to the target span voltage by the max code (ESC[7:0] = FFh), please raise 1 code at G1 gain and readjust 1.7) Offset Voltage Adjustments. ■Output Span Voltage Adjustment Example (@VDD:5V) When the output is 3700mV, set ESCR[0] = 1, ESC[7:0] = 153dec (target span voltage 4800mV). (3700[mV]-100[mV])*1.8*(1-0.2*153/275)/(1+0.2*153/152.86) = 4800[mV] MS1600-E-00 2014/05 - 33 - CONFIDENTIAL [AK8999A/AW/AD] 1.10) Offset Temperature Drift Adjustment The offset temperature drift for the pressure sensor is adjusted, including the AK8999A internal error, by using the offset voltage temperature drift adjustment EEPROM (address: 03h, 04h, 05h, data: EOTP/N[8], EOTP/N[7:0]). ■Offset Temperature Drift Adjustment Example (@VDD:5V) Adjusting the low and high temperature coefficient is explained separately. When this function is not used, set the same data as EOTP[8:0] and EOTN[8:0]. Adjusting the high temperature coefficient EOTP[8]: Offset voltage adjustment sign bit If unadjusted output is greater than the output reference voltage at Ta = 105 ºC, set EOTP[8] = 1h. If unadjusted output is smaller than the output reference voltage at Ta = 105 ºC, set EOTP[8] = 0h. EOTP[7:0]: Offset voltage adjustment bit: Adjust in 0.144mV/ºC steps (@VDD: 5V). If the offset voltage is +300mV (with respect to the output reference voltage e.g.100mV) at Ta = 105C, set EOTP[1] = 1h, EOTP[6:0] = 26dec. (100[mV]+300[mV])-(105[C]-25[C])*(0.144[mV/C]*26[dec]) = 100.5[mV] Adjusting the low temperature coefficient EOTN[8]: Offset voltage adjustment sign bit If unadjusted output is greater than the output reference voltage at Ta = -40 ºC, set EOTN[8] = 0h. If unadjusted output is smaller than the output reference voltage at Ta = -40 ºC, set EOTN[8] = 1h. EOTN[7:0]: Offset voltage adjustment: Adjust in -0.144mV/ºC steps (@VDD: 5V). If the offset voltage is +300mV (with respect to the output reference voltage e.g.100mV) at Ta=-40C, set EOTN[7] = 0h, EOTN[6:0] = 32dec. (100[mV]+300[mV])-(-40[C]-25[C])*(-0.144[mV/C]*32[dec]) = 100.5[mV] MS1600-E-00 2014/05 - 34 - CONFIDENTIAL [AK8999A/AW/AD] 1.11) Sensitivity Temperature Drift Adjustment The sensitivity temperature drift for the pressure sensor is adjusted, including the AK8999A internal error, by using the sensitivity temperature drift adjustment EEPROM (address: 03h, 05h, 06h, data: ESTP/N[8], ESTP/N[7:0]). ■Sensitivity Temperature Drift Adjustment Example (@VDD:5V, ESTC[0] = 1h) Adjusting the low and high temperature coefficient is explained separately. When this function is not used, set the same data as ESTP[8:0] and ESTN[8:0]. Adjusting the high temperature coefficient ESTP[8]: Sensitivity temperature drift adjustment sign bit (target span voltage 4800mV) If unadjusted output is greater than 4800mV (with respect to the output reference voltage) at Ta = 105C, set ESTP[8] = 0h. If unadjusted output is smaller than 4800mV (with respect to the output reference voltage) at Ta = 105C, set ESTP[8] = 1h. ESTP[7:0]: Sensitivity temperature drift adjustment: Adjust in -18ppm/C steps. If the output voltage is +4,400mV (with respect to the output reference voltage e.g.100mV) at Ta = 105C, set ESTP[8] = 1h, EST[7:0] = 58dec. 4400[mV]-(105[C]-25[C])*(-18[ppm/C]*58[dec])*4800[mV] = 4800.9[mV] Adjusting the high temperature coefficient ESTN[8]: Sensitivity temperature drift adjustment sign bit (target span voltage 4800mV) If unadjusted output is greater than 4800mV (with respect to the output reference voltage) at Ta = -40C, set ESTN[8] = 1h. If unadjusted output is smaller than 4800mV (with respect to the output reference voltage) at Ta = -40C, set ESTN[8] = 0h. ESTN[7:0]: Sensitivity temperature drift adjustment: Adjust in 18ppm/C steps. If the output voltage is +4,400mV (with respect to the output reference voltage e.g.100mV) at Ta = -40C, set ESTN[8] = 0h, ESTN[7:0] = 71dec. 4400[mV]-(-40[C]-25[C])*(18[ppm/C]*71[dec])*4800[mV] = 4798.7[mV] 1.12) Offset Voltage Fine Adjustment The offset voltage error is caused by compensating the offset voltage temperature drift. The offset voltage is adjusted using the offset voltage fine adjustment EEPROM (Address: 01h, data: EOCF[6:0]). Note) Can not chage the polarity of EOCF[7] bit at this adjustment process, because the polarity of an offset temperature coefficient changes with chaging the polarity of EOCF[7] bit. 1.13) Output Span Voltage Fine Adjustment The output span voltage error is caused by compensating the span voltage temperature drift. The output span voltage is adjusted using the output span voltage adjustment EEPROM (Address: 02h, data: ESC[7:0]). MS1600-E-00 2014/05 - 35 - CONFIDENTIAL [AK8999A/AW/AD] 2) Finding the VOUT and VO Pins External Capacitance (Cap) This section explains how the VOUT and VO pins external capacitance is defined. The requirements for determining the VOUT and VO pins external capacitance values are the stabilization time on power-up and noise characteristic. 2.1) VOUT Pin Output Voltage Stabilization Time Note that depending on the VOUT and VO pins external capacitance values, the measurement values (VOUT pin voltage) may contain errors upon power-up. "99% Settling time (+ in the figure)" in the table below represents the analog stabilization time in the figure and the time required to settle down to 99% of the output voltage (0.1*VDD in this case) according to the pressure applied during the period (+ in the figure). The period in the figure is 0.512msec (typ). Subsequently, the output voltage will settle to 99% according to the pressure during period in the figure. When the VO pin capacitance is 1µF, the period in the figure will settle within 672.4msec. Settling time (period in the figure) = -146[kΩ]*1[µF]*ln(1-99/100) = 672.4 [msec] Therefore, the settling time up to 99% (period + in the figure) will be as follows: 99% settling time (period + in the figure) = 0.512[msec] +672.4[msec] = 672.912 [msec] Referring to the previous calculation example, determine the stabilization time based on true terms of use: Prerequisites: VO pin external capacitance: VO pin internal resistance: Period in the figure: Cap（Cap[µF] typ., Cap*1.1[µF] worst） Res（146[kΩ] typ., 190[kΩ] worst） Time（0.512[msec] typ., 0.70[msec] worst） Settling time (period in the figure) = -Res*Cap*In(1-99/100) 99% settling time (period + in the figure) = Time + Settling time VDD pin voltage Sample timing VO&VOUT pin voltage e.g. When sampling frequency is 8.33kHz and VOUT-VO pin capacitance is 1μF. Hi-Z - Reference designators : Sampling timing; this diagram represents 8.33kHz (0.12msec). : Power-up rise time (VDD). : Settling time for stable analog operation. : Pressure signal detection time. This time depends on the VO pin external capacitance and the internal 146kΩ resistance. MS1600-E-00 2014/05 - 36 - CONFIDENTIAL Fig Time (msec) 99% Settling time (ms) () VO pin Cutoff Ext. cap Freq.(Hz) Typical Worst case Typical Worst case Note) Note) (nF) (Typical) case case 0.512 0.700 672.4 962.5 1000 1.090 0.512 0.700 147.9 211.7 220 4.955 0.512 0.700 14.79 21.17 22 49.55 0.512 0.700 1.479 2.117 2.2 495.5 0.512 0.700 0.148 0.212 0.22 4.96k 0.512 0.700 0.067 0.096 0.1 10.9k Note) External capacitance ± 10% and worst case for lot variations. [AK8999A/AW/AD] 99% Settling time (ms) (+) Typical case 672.9 148.4 15.30 1.991 0.660 0.579 Worst case Note) 963.2 212.4 21.87 2.817 0.912 0.796 2.2) Noise Reduction Effects with Band Limitation The relationship between an external capacitance of the VO pin and noise reduction effect is shown below. Noise Reduction Effect (dB) Typical Cutoff Worst case Typical case Note) Freq.(Hz) 1.090 1000 -23.03 -22.30 4.955 220 -16.96 -16.18 49.55 0.83k 22 -7.70 -6.98 495.5 2.2 -1.25 -1.01 No capacitor 0.00 0.00 220 4.955 -24.41 -24.39 22 49.55 -16.70 -16.66 8.33k 2.2 495.5 -7.67 -6.96 0.22 4.96k -1.25 -1.01 No capacitor 0.00 0.00 Note) External capacitance ± 10% and worst case for lot variations. Sampling Freq.(Hz) VO pin Ext. cap (nF) As seen in Sections "2.1) VOUT pin output voltage stabilization time" and "2.2) Noise Reduction Effect with Band Limitation", the VO pin external capacitance value should be reduced to decrease the measurement time. The VO pin external capacitance value should be larger to reduce the noise. On determining the VO pin external capacitance value, various conditions should be thoroughly reviewed according to the application requirements. 3) Pressure Threshold Detection Operation at Power-Up Note that pressure threshold detectors operate at power up. VOUT pin output voltage is settled down based on the time constant determined by the internal resistance 146kΩ and VO pin external capacitance Cap value (see 2) Finding the VOUT and VO Pins External Capacitance (Cap)). Note that errors may be detected during the time in which VOUT pin output is not settled down to the voltage required according to the pressure applied. MS1600-E-00 2014/05 - 37 - CONFIDENTIAL [AK8999A/AW/AD] 4) Power Consumption Current values described in 3) Supply Voltage Current in the Electrical Characteristics are those for the average current. The maximum current is shown in the table below. Use a power supply with sufficient supply capacity by referring to this table: Max. Current Units VDD:3.6V VDD:5.5V mA 6.8 9.5 Description Reference value for design 5) Pressure Threshold Detectors 1 and 2 5.1) Pressure Threshold Detector's Detection Threshold The internal and external detection threshold setup for the pressure threshold detectors 1 and 2 is described. Block diagram of the pressure threshold detectors 1 and 2: EPTH1[0] DET1/2 Control Threshold EEPROM ：EPT1[3:0] LOGIC EPTH1[0] Threshold EEPROM ：EPT2[3:0] DET1 DET2/ PTH VOUT EIN1L[1:0] EIN2L[1:0] The detection threshold of the pressure threshold detector 1 can be set either through the external input (DET/PTH pin) or internal setup (EEPROM setup EPT1[4:0]). The detection threshold of the pressure threshold detector 2 can be only set the internal setup (EEPROM setup EPT2[4:0]). 5.2) Pressure Threshold Detector's hysteresis voltage The relation between the hysteresis voltage and the detection voltage of the pressure threshold detectors 1 and 2 is described The hysteresis voltage related with the detection threshold voltage of the pressure threshold detectors 1 and 2 is as follows by the detection threshold setup (EEPROM setup EIN1L[0], EIN2L[0]). Detect pressure above threshold : Detection threshold – Hysteresis voltage Detect pressure below threshold : Detection threshold + Hysteresis voltage In addition, same as the detection threshold of the pressure threshold detectors 1 and 2, the setting range of “Detection threshold ± Hysteresis voltage” should be set between from 0.125*VDD to 0.9*VDD. MS1600-E-00 2014/05 - 38 - CONFIDENTIAL [AK8999A/AW/AD] 6) The Compensation of the 2nd Order Temperature Characteristics of Offset and Span Voltage Offset temperature drift and sensitivity temperature drift characteristics of a pressure sensor can be adjusted by the 1st order compensation coefficient or the 2nd order compensation coefficient by piecewise linear approximation. The AK8999A can compensate the 1st and 2nd order temperature characteristics of offset and span voltage temperature drift. The compensation of the quasi 2nd order temperature characteristics uses the piecewise linear approximation that has each correction coefficient for the high and low temperature side on the basis of 25C. When the 1st order temperature characteristics of offset and span voltage temperature drift is adjusted, the offset and span voltage temperature coefficients are calculated from the measurement results of at least two temperatures (for example, 25C and -40C and/or 105C) and set the same coefficient for the high and low temperature side. When the quasi 2nd order temperature characteristics of offset and span voltage temperature drift is adjusted, the offset and span vltage temperature coefficients are calculated from the measurement results for each the high and low temperature side (for example, 25C and -40C and/or 105C) and set separately. When the quasi 2nd order temperature characteristics is compensated by using the piecewise linear approximation, the adjustment error (Span adjustment error : 0.080%FS max., Offset adjustment error : 0.222%FS max.) can be appeared by the comparator offset etc. on the turning point near 25C. The compensation of offset voltage temperature characteristics @VOUT VOUT [V] High temp. Low temp. 0.222%FS 25 -40 105 Temp. [C] The compensation of span voltage temperature characteristics @VOUT VOUT [V] High temp. Low temp. 0.080%FS -40 25 105 MS1600-E-00 Temp. [C] 2014/05 - 39 - CONFIDENTIAL [AK8999A/AW/AD] 7) The Initial State Setup of VOUT pin, DET1 pin and DET2 pin at Power-Up To make the Pressure Threshold Detectors generate the correct result at power up, the initial state of VOUT pin, and the output polarity and the detection direction of the Pressure Threshold Detectors must be set by EEPROM (EVOUT[1:0], EINV1[0], EIN1L[0], EINV2[0], EIN2L[0]). The relation between the data in EEPROM and the output waveform of VOUT pin, DET1 pin and DET2 pin is explained in the following figures. 7.1) Detection Conditions: EIN1L[0]=EIN2L[0]=EINV1[0]=0h, EINV2[0]=1h, EVOUT[1:0]=0h VDD VDD Detection threshold VOUT pin unknown VOUT state (VDD 1V) Normal output VSS DET1 pin Low High unknown DET1 state (VDD 1V) Initial state Detection result Detection threshold VOUT pin unknown VOUT state (VDD 1V) Normal output VSS DET2 pin Low High unknown DET2 state (VDD 1V) Initial state Detection result 7.2) Detection Conditions: EIN1L[0]=EIN2L[0]=1h, EINV1[0]=0h, EINV2[0]=1h, EVOUT[1:0]=1h VDD VDD VOUT pin VOUT state Detection threshold VOUT state 1V) DET1 pin Normal output VDD High unknown unknown 1V) Initial state 1V) DET2 pin Low (VDD (VDD Normal output VDD DET1 state Detection threshold unknown unknown (VDD VOUT pin Detection result DET2 state (VDD 1V) Initial state MS1600-E-00 Detection result 2014/05 - 40 - CONFIDENTIAL [AK8999A/AW/AD] 7.3) Detection Conditions : EIN1L[0]=1h, EIN2L[0]=0h, EINV1[0]=EINV2[0]=0h, EVOUT[1:0]=2h VDD VDD Detection threshold 1 VOUT pin Detection threshold 1 VOUT pin Detection threshold 2 Detection threshold 2 unknown unknown VOUT state (VDD VOUT state 1V) 0.5*VDD 1V) Low unknown DET2 state 1V) Initial state Low High unknown (VDD Normal output 0.5*VDD DET2 pin DET1 pin DET1 state (VDD Normal output Detection result (VDD 1V) Initial state MS1600-E-00 Detection result 2014/05 - 41 - CONFIDENTIAL [AK8999A/AW/AD] 8) Note on the Use of Output Reference Voltage When output reference voltage adjustment is used, please be aware of the following. When ELV[8] is changed from 0h to 1h, VOUT output voltage may shift by offset of an internal circuit (around 1 code of ELV[7:0] as maximum). When adjusted using ELV[8] = 1h, please check VOUT output voltage by ELV[7:0] = 00h, and as the start point adjust to the target output reference voltage. 9) Note on the Use of Offset Voltage Fine Adjustment When offset voltage fine adjustment is used, please be aware of the following. (It becomes the same contents as the preceding paragraph.) When EOCF[7] is changed from 0h to 1h, VOUT output voltage may shift by offset of an internal circuit (around 1 code of EOCF[6:0] as maximum). When adjusted using EOCF[7] = 1h, please check VOUT output voltage by EOCF[6:0] = 00h, and as the start point adjust to the target offset voltage. MS1600-E-00 2014/05 - 42 - CONFIDENTIAL [AK8999A/AW/AD] 16. Serial Interface Description The data of EEPROM and control register (volatile memory) in the AK8999A can be written and read through a 2-wire serial interface on CSCLK pin and VOUT pin. When CSCLK = High is maintained beyond a definite period of time (1.0msec), VOUT output will change from the Analog output to SDI/O (Serial data I/O). And data is captured from VOUT synchronously with the rising edge of CSCLK after SDI/O shift. Input data contains three instruction bits (I2 - I0), five address bits (A4 - A0) and eight data bits (D7 - D0). Provide the data in the order of I2 → I0 → A4 → A0 → D7 → D0. And when CSCLK=Low is maintained beyond a definite period of time (0.5msec), VOUT output will return from SDI/O to the Analog output. On the WRITE instruction, allow 5msec or more write time for EEPROM and 10μsec or more write time for the control register (see 7) Digital AC Characteristics in the Electrical Characteristics). For the READ instruction, data is written up to 8CLK for CSCLK and the data output starting at the rising edge of 9CLK is read out. 1) Data Configuration Configuration of data written to or read out through the serial interface is shown below. There are 16 specific bits of data in total comprised of three instruction bits, five address bits and eight data bits. Instruction I2 I1 Address I0 A4 A3 A2 Data A1 A0 D7 D6 D5 D4 D3 D2 D1 D0 Data input direction 2) Description of Instructions Instruction codes are summarized below. Code Note) Instruction I2 I1 I0 1 1 0 EEPROM read (Read Mode) 1 0 1 EEPROM write (Write Mode) EEPROM batch write (Write Mode) 0 1 0 Control reg. read (Read Mode) 0 0 1 Control reg. write (Write Mode) Description Read out the data written in the EEPROM Write data to the EEPROM. Write time (from 16th CSCLK rising edge to CSCLK falling edge) requires 5msec or more. If the 1Fh address is written, input data is written to all addresses except for 1Eh. Write time (from 16th CSCLK rising edge to CSCLK falling edge) requires 10msec or more. Read out the data written in the control register. Write the data to the control register. Write time (from 16th CSCLK rising edge to CSCLK falling edge) requires 10μsec or more. Note) Instructions other than this are prohibited. MS1600-E-00 2014/05 - 43 - CONFIDENTIAL [AK8999A/AW/AD] 3) Flow chart of Digital block The flow chart of digital block is shown below. Flow chart of Digital block Note) In DATA I/O mode, when the condition of CSCLK=Low > 0.5 ms consists, it becomes an Analog Output mode. The state of EEPROM Write Enable and Control Register Access Enable is required. POWER ON Normal Mode VOUT : Analog Output No CSCLK=”High” > 1.0 ms Digital I/O Mode VOUT : DATA I/O Yes Timing chart1 EEPROM Write Instruction code : 101 EEPROM Read Instruction code : 110 Register Read Instruction code : 010 Register Write Instruction code : 001 Timing chart2 CSCLK=”High” (Write Time) > 5ms No Timing chart3 VREF Adjustment set VTMP Adjustment set IREF Adjustment set Pressure Threshold Detector 1/2 Threshold Adjustment set Between CSCLK="High" VOUT : VREF Between CSCLK="High" VOUT : VTMP Between CSCLK="High" VOUT : IREF Between CSCLK="High" VOUT : Pressure Level Pressure Threshold Detector 1/2 Hysteresis Level Adjustment set Between CSCLK="High" VOUT : Pressure Hysteresis Level Level shift Adjustment set OSC Adjustment set Between CSCLK="High" VOUT : Level shift Between CSCLK="High" OSC clock counting CSCLK=”Low” > 0.5 ms Yes MS1600-E-00 2014/05 - 44 - CONFIDENTIAL [AK8999A/AW/AD] 4) Serial Interface Timing Diagram 4.1) Timing chart1 Twr_EEP [EEPROM WRITE Mode] 1 4 9 16 1 CSCLK VOUT Analog Output I2 I1 I0 A4 A3 A2 A1 A0 D7 I2 D0 [EEPROM READ Mode] 1 CSCLK VOUT Analog Output 9 16 Hi-Z I2 I1 I0 A4 A3 A2 A1 A0 1 4 Hi-Z D7 I2 D0 I1 I0 A4 A3 A2 A3 A2 [Register READ Mode] 1 CSCLK VOUT Digital I/O 9 16 Hi-Z I2 I1 I0 A4 A3 A2 A1 A0 1 4 Hi-Z D7 I2 D0 I1 I0 A4 4.2) Timing chart2 [Register Write Mode1] VREF, IREF, VTMP, Pressure Threshold Level, Pressure Threshold Hysteresis Level, Level shift Adjustment set Twr_REG 1 4 9 CSCLK High Time 16 1 CSCLK VOUT Analog Output I2 I1 I0 A4 A3 A2 A1 A0 D7 Hi-z D0 Voltage Monitor (note) I2 (note) VREF, IREF, VTMP, Pressure Threshold Level, Pressure Threshold Hysteresis Level Level shift 4.3) Timing chart3 [Register Write Mode2] OSC Adjustment set Twr_REG 1 4 Tcount 9 16 1 A0 D7 D0 I2 CSCLK VOUT Analog Output I2 I1 I0 A4 A3 A2 A1 MS1600-E-00 2014/05 - 45 - CONFIDENTIAL [AK8999A/AW/AD] 5) Register Map 5.1) EEPROM Map Name OCR SCR OCF SC OTS STS LVS Content Offset voltage coarse adj. Output span voltage coarse adj. Offset voltage fine adj. Address (hex) 00h 01h Output span voltage adj. 02h Offset voltage temp. drift adj. Sens. temp. drift adj. (MSB) Output ref. voltage adj. (MSB) 03h OTP Offset voltage temp. drift adj. (High temp. side) 04h OTN Offset voltage temp. drift adj. (Low temp. side) 05h STP STN Sens. temp. drift adj. (High temp. side) Sens. temp. drift adj. (Low temp. side) 06h 07h Output ref. voltage adj. 08h PTH1 Pressure threshold detector 1 09h PTH2 Pressure threshold detector 2 0Ah HYS1 HYS2 Pressure threshold detector comparator hysteresis voltage adj. 0Bh LV ING MM1 Input gain adj. Meas. mode1 MM2 Meas. mode2 VREF IREF Note1) VREF voltage adj. IREF current adj. OSC VTMP Note1) VTMP Note1) UE OSC frequency adj. VTMP coasce adlj. VTMP fine adj. User-writable data Data D7 D6 D5 D4 D3 D2 D1 D0 ESCR[0] dummy dummy dummy EOCR[3] EOCR[2] EOCR[1] EOCR[0] 0 0 0 0 0 0 0 0 EOCF[7] EOCF[6] EOCF[5] EOCF[4] EOCF[3] EOCF[2] ECCF[1] EOCF[0] 0 0 0 0 0 0 0 0 ESC[7] ESC[6] ESC[5] ESC[4] ESC[3] ESC[2] ESC[1] ESC[0] 0 0 0 0 0 0 0 0 ELV[8] ESTN[8] ESTP[8] EOTN[8] EOT[8] 0 0 0 0 0 EOTP[7] EOTP[6] EOTP[5] EOTP[4] EOTP[3] EOTP[2] EOTP[1] EOTP[0] 0 0 0 0 0 0 0 0 EOTN[7] EOTN[6] EOTN[5] EOTN[4] EOTN[3] EOTN[2] EOTN[1] EOTN[0] 0 0 0 0 0 0 0 0 ESTP[7] ESTP[6] ESTP[5] ESTP[4] ESTP[3] ESTP[2] ESTP[1] ESTP[0] 0 0 0 0 0 0 0 0 ESTN[7] ESTN[6] ESTN[5] ESTN[4] ESTN[3] ESTN[2] ESTN[1] ESTN[0] 0 0 0 0 0 0 0 0 ELV[7] ELV[6] ELV[5] ELV[4] ELV[3] ELV[2] ELV[1] ELV[0] 0 0 0 0 0 0 0 0 EINV1[0] EINE1[0] EIN1L[0] EPT1[4] EPT1[3] EPT1[2] EPT1[1] EPT1[0] 0 0 0 0 0 0 0 0 EINV2[0] EINE2[0] EIN2L[0] EPT2[4] EPT2[3] EPT2[2] EPT2[1] EPT2[0] 0 0 0 0 0 0 0 0 EPTH1[0] EHYS2[1] EHYS2[0] EHYS1[1] EHYS1[0] 0 0 0 0 0 EIG[4] EIG[3] EIG[2] EIG[1] EIG[0] 0Ch 0Dh 0 0 0 0 0 EVPN[0] ETMP[1] ETMP[0] ESCF[1] ESCF[0] EVD[1] EVD[0] ESF[0] 0 0 0 0 0 0 0Eh 0Fh EIR[3] 0 10h EIR[2] EIR[0] 0 0 0 ETM[8] ETM[7] ETM[6] 0 11h 12h EIR[1] EVR[2] EFR[3] 0 0 EVOUT[1] EVOUT[0] 0 0 EVR[1] EVR[0] 0 0 0 EFR[2] EFR[1] EFR[0] 0 0 0 0 0 0 ETM[5] ETM[4] ETM[3] ETM[2] ETM[1] ETM[0] 0 0 0 0 0 0 EUE[7] EUE[6] EUE[5] EUE[4] EUE[3] EUE[2] EUE[1] EUE[0] 0 0 0 0 0 0 0 0 13h – 1Ch MM3 EWE AW Note) Note1) Control register access setup EEPROM Write Enable EEPROM batch write mode ETST[0] 1Dh 0 EWE[0] 1Eh 1Fh 0 EAW[7] EAW[6] EAW[5] EAW [4] EAW[3] EAW[2] EAW[1] Lower line of each data represents the factory settings written to EEPROM. Access to the reserved addresses is prohibited. Write “0” to the unused D[7:0]. For a packaged device, registers are adjusted before shipment. Therefore, defaults are not "0". MS1600-E-00 2014/05 - 46 - EAW[0] CONFIDENTIAL [AK8999A/AW/AD] 5.2) Control Register (Volatile Memory) Map Name Address (hex) Content CM1 Adjustment mode 00h CM2 OSC variable ratio Note1) 01h D6 D5 D4 D3 D2 D1 D0 AM[3] AM[2] AM[1] AM[0] 0 0 0 0 CT[7] CT[6] CT[5] CT[4] CT[3] CT[2] CT[1] CT[0] 0 0 0 0 0 0 0 0 02h – 1Fh Reserved Note) Data D7 Lower line of each data represents the control register data upon power-up. Access to the reserved addresses is prohibited. Write “0” to the unused D[7:0]. Access to this register serves as ReadOnly. Note1) 6) EEPROM and control register Description 6.1) Description of EEPROM Offset and span adjustment should be made after measurement mode setup and adjustment of the reference generator including VREF, IREF, OSC and VTMP. a) Offset voltage adjustment (EEPROM names: OCR, OCF) Coarse adjustment should be performed first, followed by a fine adjustment for the offset voltage. The content of the adjustment EEPROMs are shown here. a.1) Offset voltage coarse adjustment (OCR) The offset voltage is adjusted coarsely. The offset adjustment voltage varies ratiometrically with respect to the supply voltage. The ratio in the table below is benchmarked to a VOUT output of 4800 mV (@VDD: 5V) as 100% (Ratio = (Offset voltage @VDD: 5V)/4800[mV]*100[%]). Address : 00 hex EOCR [2:0] Dec Hex Bin 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 000 001 010 011 100 101 110 111 D[3:0] = EOCR[3:0] Ratio VDD:3V, 3.3V EOCR EOCR (%) [3] = 0 [3] = 1 (mV) (mV) 0.00 0 0 33.33 800 -800 66.67 1600 -1600 100.00 2400 -2400 133.33 3200 -3200 166.67 4000 -4000 200.00 4800 -4800 233.33 5600 -5600 MS1600-E-00 VDD:5V EOCR EOCR [3] = 0 [3] = 1 (mV) (mV) 0 0 1600 -1600 3200 -3200 4800 -4800 6400 -6400 8000 -8000 9600 -9600 11200 -11200 Description Default 2014/05 - 47 - CONFIDENTIAL [AK8999A/AW/AD] a.2) Offset voltage fine adjustment (OCF) The offset voltage is adjusted finely. The offset adjustment voltage varies ratiometrically with respect to the supply voltage. The ratio in the table below is benchmarked to a VOUT output of 4800mV (@VDD: 5V) as 100% (Ratio = (Offset voltage @VDD: 5V)/4800[mV]*100[%]). Address : 01hex EOCF [6:0] Dec Hex 0 1 ： 15 16 ： 31 32 ： 63 64 ： 126 127 00 01 ： 0F 10 ： 1F 20 ： 3F 40 ： 7E 7F D[7:0] = EOCF[7:0] Ratio VDD:3V, 3.3V EOCF EOCF Bin (%) [7] = 0 [7] = 1 (mV) (mV) 0000000 0 0 0 0000001 0.17 4 -4 ： ： ： ： 0001111 2.50 60 -60 0010000 2.67 64 -64 ： ： ： ： 0011111 5.17 124 -124 0100000 5.33 128 -128 ： ： ： ： 0111111 10.50 252 -252 1000000 10.67 256 -256 ： ： ： ： 1111110 21.00 504 -504 1111111 21.17 508 -508 VDD:5V EOCF EOCF [7] = 0 [7] = 1 (mV) (mV) 0 0 8 -8 ： ： 120 -120 128 -128 ： ： 248 -248 256 -256 ： ： 504 -504 512 -512 ： ： 1008 -1008 1016 -1016 Description Default b) Output span voltage adjustment (EEPROM name: SCR, SC) The span voltage is adjusted. The magnification in the table below is benchmarked to a VOUT output of 4800 mV (@VDD: 5V) as 100% (Ratio = (Output voltage @VDD: 5V)/4800[mV]*100[%]). The output and sensitivity describes the adjustable output voltages with the assumed reference output (2400mV@VDD: 3V, 4800mV@VDD: 5V) when ESC[7:0] = 0 dec. b.1) Output span voltage coarse adjustment (EEPROM name: SCR) The output span voltage is adjusted coarsely. Address : 00 hex D[7] D[7:0] Symbol D[7] ESCR[0] 0 SCRH 1 SCRL = ESCR[0] Mode setup Output span voltage coarse adjustment 3.0x (1.57x to 3.0x) (defult) 1.8x (1.1x to 1.8x) MS1600-E-00 2014/05 - 48 - CONFIDENTIAL [AK8999A/AW/AD] b.2) Output span voltage fine adjustment (EEPROM name: SC, ESCR[0] = 1h) The output span voltage is adjusted finely. Address : 02 hex D[7:0] = ESC[7:0] Magnification ESC[7:0] Dec Hex Bin (%) 0 1 2 3 4 ： 123 124 125 126 127 128 129 130 131 132 133 ： 251 252 253 254 255 00 01 02 03 04 ： 7B 7C 7D 7E 7F 80 81 82 83 84 85 ： FB FC FD FE FF 00000000 00000001 00000010 00000011 00000100 ： 01111011 01111100 01111101 01111110 01111111 10000000 10000001 10000010 10000011 10000100 10000101 ： 11111011 11111100 11111101 11111110 11111111 100 99.8 99.6 99.4 99.2 ： 78.4 78.3 78.1 78 77.8 77.7 77.5 77.4 77.2 77.1 76.9 ： 61.5 61.4 61.3 61.2 61.1 VDD:3V, 3.3V Output Sens. (mV) (times) 2400 60.0 2395 59.9 2390 59.8 2385 59.6 2381 59.5 ： ： 1882 47.1 1879 47.0 1875 46.9 1872 46.8 1868 46.7 1864 46.6 1861 46.5 1857 46.4 1854 46.3 1850 46.3 1846 46.2 ： ： 1477 36.9 1474 36.9 1471 36.8 1469 36.7 1466 36.6 MS1600-E-00 VDD:5V Output Sens. (mV) (times) 4800 60.0 4790 59.9 4781 59.8 4771 59.6 4761 59.5 ： ： 3765 47.1 3757 47.0 3750 46.9 3743 46.8 3736 46.7 3729 46.6 3721 46.5 3714 46.4 3707 46.3 3700 46.3 3693 46.2 ： ： 2954 36.9 2948 36.9 2943 36.8 2937 36.7 2932 36.6 Description Default Center 2014/05 - 49 - CONFIDENTIAL [AK8999A/AW/AD] b.3) Output span voltage fine adjustment (EEPROM name: SC, ESCR[0]=0h) The output span voltage is adjusted finely. Address : 02 hex D[7:0] = ESC[7:0] Magnification ESC[7:0] VDD:3V, 3.3V VDD:5V Dec Hex Bin (%) Output (mV) Sens. (times) Output (mV) Sens. (times) 0 1 2 3 4 ： 123 124 125 126 127 128 129 130 131 132 133 ： 251 252 253 254 255 00 01 02 03 04 ： 7B 7C 7D 7E 7F 80 81 82 83 84 85 ： FB FC FD FE FF 00000000 00000001 00000010 00000011 00000100 ： 01111011 01111100 01111101 01111110 01111111 10000000 10000001 10000010 10000011 10000100 10000101 ： 11111011 11111100 11111101 11111110 11111111 100.0 99.7 99.4 99.1 98.8 ： 71.8 71.6 71.4 71.3 71.1 70.9 70.7 70.5 70.4 70.2 70.0 ： 52.8 52.7 52.6 52.5 52.3 4000 3992 3983 3975 3968 ： 3137 3132 3125 3120 3113 3107 3102 3095 3090 3083 3077 ： 2462 2457 2452 2448 2443 100.0 99.7 99.5 99.2 98.8 ： 71.8 71.7 71.5 71.3 71.0 70.8 70.7 70.5 70.3 70.2 70.0 ： 52.8 52.7 52.7 52.5 52.3 8000 7983 7968 7952 7935 ： 6275 6262 6250 6238 6227 6215 6202 6190 6178 6167 6155 ： 4923 4913 4905 4895 4887 100.0 99.7 99.5 99.2 98.8 ： 71.8 71.7 71.5 71.3 71.0 70.8 70.7 70.5 70.3 70.2 70.0 ： 52.8 52.7 52.7 52.5 52.3 MS1600-E-00 Description Default Center 2014/05 - 50 - CONFIDENTIAL [AK8999A/AW/AD] c) Offset voltage temperature drift, sensitivity temperature drift and output reference voltage adjustment (EEPROM name: OTS, STS, LVS) When the offset and sensitivity voltage temperature drift and the output reference voltage are adjusted, the adjustment polarity is set. Address : 03 hex D[4:0] D[4:0] Symbol D[4] ELV[8] 0 LVM 1 LVP D[3] ESTN[8] 0 1 D[2] STNP STNM ESTP[8] 0 1 D[1] STPP STPM EOTN[8] 0 OTNP 1 OTNM D[0] EOTP[8] 0 OTPP 1 OTPM = EOTP[8], EOTN[8], ESTP[8], ESTN[8], ELV[8] Mode setup Output reference voltage adjustment polarity setup EEPROM Subtraction on the basis of 0.5*VDD (default) Addition on the basis of 0.5*VDD Sensitivity temp. drift adjustment polarity setup EEPROM (Low temp. side) Polarity “+” (default) Polarity “-“ Sensitivity temp. drift adjustment polarity setup EEPROM (High temp. side) Polarity “+” (default) Polarity “-“ Offset voltage temp. drift adjustment polarity setup EEPROM (Low temp. side) Polarity “+” (EOCF[7] = 0h) (default) Polarity “-“ (EOCF[7] = 1h) Polarity “-“ (EOCF[7] = 0h) Polarity “+” (EOCF[7] = 1h) Offset voltage temp. drift adjustment polarity setup EEPROM (High temp. side) Polarity “+” (EOCF[7] = 0h) (default) Polarity “-“ (EOCF[7] = 1h) Polarity “-“ (EOCF[7] = 0h) Polarity “+” (EOCF[7] = 1h) MS1600-E-00 2014/05 - 51 - CONFIDENTIAL [AK8999A/AW/AD] d) Offset voltage temperature drift adjustment (EEPROM name: OTP, OTN) The offset voltage temperature drift for the pressure sensor is adjusted, including the AK8999A internal error. After performing the offset voltage adjustment at 25C, use the EEPROM's offset voltage temperature characteristic coefficients for adjustment so that the absolute values of the AK8999A's coefficient are matched to those of the sensor's coefficient. d.1) Offset voltage temperature drift adjustment (EEPROM name: OTP, OTN, EOCF[7] = 0h) Address : 03 hex D[1:0] = EOTP/N[8], Address :04 hex, 05 hex D[7:0] = EOTP/N[7:0] EOTP/N[7:0] Ratio VDD:3V, 3.3V VDD:5V EOTP/N EOTP/N EOTP/N EOTP/N Description [8] = 0 [8] = 1 [8] = 0 [8] = 1 Dec Hex Bin (%) (mV/C) (mV/C) (mV/C) (mV/C) 0 00 00000000 0.00 0.000 0.000 0.000 0.000 Default 1 01 00000001 0.39 0.072 -0.072 0.144 -0.144 2 02 00000010 0.78 0.145 -0.145 0.289 -0.289 3 03 00000011 1.18 0.217 -0.217 0.433 -0.433 4 04 00000100 1.57 0.289 -0.289 0.577 -0.577 ： ： ： ： ： ： ： ： 122 7A 01111010 47.84 8.803 -8.803 17.606 -17.606 123 7B 01111011 48.24 8.876 -8.876 17.751 -17.751 126 7E 01111110 49.41 9.092 -9.092 18.184 -18.184 127 7F 01111111 49.80 9.164 -9.164 18.328 -18.328 128 80 10000000 50.20 9.236 -9.236 18.472 -18.472 129 81 10000001 50.59 9.308 -9.308 18.616 -18.616 130 82 10000010 50.98 9.381 -9.381 18.761 -18.761 131 83 10000011 51.37 9.453 -9.453 18.905 -18.905 132 84 10000100 51.76 9.525 -9.525 19.049 -19.049 133 85 10000101 52.16 9.597 -9.597 19.194 -19.194 ： ： ： ： ： ： ： ： 204 CC 11001100 80.00 14.72 -14.72 29.44 -29.44 205 CD 11001101 80.39 14.79 -14.79 29.58 -29.58 ： ： ： ： ： ： ： ： 223 DF 11011111 87.45 16.09 -16.09 32.18 -32.18 ： ： ： ： ： ： ： ： 236 EC 11101100 92.55 17.029 -17.029 34.058 -34.058 237 ED 11101101 92.94 17.101 -17.101 34.202 -34.202 ： ： ： ： ： ： ： ： 255 FF 11111111 100.00 18.400 -18.400 36.800 -36.800 MS1600-E-00 2014/05 - 52 - CONFIDENTIAL [AK8999A/AW/AD] d.2) Offset voltage temperature drift adjustment (EEPROM name: OTP, OTN, EOCF[7] = 1h) Address : 03 hex D[1:0] = EOTP/N[8], 04 hex, 05 hex D[7:0] = EOTP/N[7:0] EOTP/N[7:0] Ratio VDD:3V, 3.3V VDD:5V EOTP/N EOTP/N EOTP/N EOTP/N [8] = 1 [8] = 0 [8] = 1 [8] = 0 Dec Hex Bin (%) (mV/C) (mV/C) (mV/C) (mV/C) 0 00 00000000 0.00 0.000 0.000 0.000 0.000 1 01 00000001 0.39 0.072 -0.072 0.144 -0.144 2 02 00000010 0.78 0.145 -0.145 0.289 -0.289 3 03 00000011 1.18 0.217 -0.217 0.433 -0.433 4 04 00000100 1.57 0.289 -0.289 0.577 -0.577 ： ： ： ： ： ： ： ： 122 7A 01111010 47.84 8.803 -8.803 17.606 -17.606 123 7B 01111011 48.24 8.876 -8.876 17.751 -17.751 126 7E 01111110 49.41 9.092 -9.092 18.184 -18.184 127 7F 01111111 49.80 9.164 -9.164 18.328 -18.328 128 80 10000000 50.20 9.236 -9.236 18.472 -18.472 129 81 10000001 50.59 9.308 -9.308 18.616 -18.616 130 82 10000010 50.98 9.381 -9.381 18.761 -18.761 131 83 10000011 51.37 9.453 -9.453 18.905 -18.905 132 84 10000100 51.76 9.525 -9.525 19.049 -19.049 133 85 10000101 52.16 9.597 -9.597 19.194 -19.194 ： ： ： ： ： ： ： ： 204 CC 11001100 80.00 14.72 -14.72 29.44 -29.44 205 CD 11001101 80.39 14.79 -14.79 29.58 -29.58 ： ： ： ： ： ： ： ： 223 DF 11011111 87.45 16.09 -16.09 32.18 -32.18 ： ： ： ： ： ： ： ： 236 EC 11101100 92.55 17.029 -17.029 34.058 -34.058 237 ED 11101101 92.94 17.101 -17.101 34.202 -34.202 ： ： ： ： ： ： ： ： 255 FF 11111111 100.00 18.400 -18.400 36.800 -36.800 MS1600-E-00 Description Default 2014/05 - 53 - CONFIDENTIAL [AK8999A/AW/AD] e) Sensitivity temperature drift adjustment (EEPROM name: STP, STN) The sensitivity temperature drift for the pressure sensor is adjusted, including the AK8999A internal error. After performing the span voltage adjustment at 25ºC, use the EEPROM's sensitivity temperature drift coefficients for adjustment so that the absolute values of the AK8999A's coefficient are matched to those of the sensor's coefficient. Address : 03 hex D[3:2] = ESTP/N[8], Address : 06 hex, 07 hex D[7:0] = ESTP/N[7:0] ESTP/N [7:0] Ratio VDD:3V, 3.3V VDD:5V ESTP/N ESTP/N ESTP/N ESTP/N Description [8] = 0 [8] = 1 [8] = 0 [8] = 1 Dec Hex Bin (%) 0 1 2 ： 25 26 27 28 ： 137 138 139 140 ： 220 221 222 223 ： 254 255 0 1 2 ： 19 1A 1B 1C ： 89 8A 8B 8C ： DC DD DE DF ： FE FF 00000000 00000001 00000010 ： 00011001 00011010 00011011 00011100 ： 10001001 10001010 10001011 10001100 ： 11011100 11011101 11011110 11011111 ： 11111110 11111111 0.00 0.39 0.78 ： 9.80 10.20 10.59 10.98 ： 53.73 54.12 54.51 54.90 ： 86.27 86.67 87.06 87.45 ： 99.61 100.00 (ppm/C) (ppm/C) (ppm/C) (ppm/C) 0 18 36 ： 451 469 487 505 ： 2471 2489 2507 2525 ： 3969 3987 4005 4023 ： 4582 4600 0 -18 -36 ： -451 -469 -487 -505 ： -2471 -2489 -2507 -2525 ： -3969 -3987 -4005 -4023 ： -4582 -4600 0 18 36 ： 451 469 487 505 ： 2471 2489 2507 2525 ： 3969 3987 4005 4023 ： 4582 4600 0 -18 -36 ： -451 -469 -487 -505 ： -2471 -2489 -2507 -2525 ： -3969 -3987 -4005 -4023 ： -4582 -4600 MS1600-E-00 Default 2014/05 - 54 - CONFIDENTIAL [AK8999A/AW/AD] f) Output reference voltage adjustment (EEPROM names: LVS, LV) This EEPROM is used for adjusting the output reference. The content of the adjustment EEPROMs is shown here. Address : 03 hex D[4] = ELV[8], Address : 08 hex D[7:0] = ELV[7:0] ELV[7:0] VOUT pin (* VDD) Description Dec Hex Bin ELV[8]=0 ELV[8]=1 0 00 00000000 0.500 0.500 Default 1 01 00000001 0.498 0.502 2 02 00000010 0.496 0.504 3 03 00000011 0.494 0.506 4 04 00000100 0.492 0.508 ： ： ： ： ： 124 7C 01111100 0.252 0.748 125 7D 01111101 0.250 0.750 126 7E 01111110 0.248 0.752 127 7F 01111111 0.246 0.754 128 80 10000000 0.244 0.756 ： ： ： ： ： 240 F0 11110000 0.020 0.980 241 F1 11110001 0.018 0.982 242 F2 11110010 0.016 0.984 243 F3 11110011 0.014 0.986 ： ： ： ： ： 250 FA 11111010 0.000 1.000 251 FB 11111011 0.000 1.000 252 FC 11111100 0.000 1.000 253 FD 11111101 0.000 1.000 254 FE 11111110 0.000 1.000 255 FF 11111111 0.000 1.000 MS1600-E-00 2014/05 - 55 - CONFIDENTIAL [AK8999A/AW/AD] g) Pressure threshold detector 1 (EEPROM name: PTH1, HYS1) The operating mode, the detection threshold values and the hysteresis voltage of the comparator for the pressure threshold detector 1 are set up. The detector threshold voltage and the hysteresis voltage vary ratiometrically with respect to the supply voltage. g.1) Pressure threshold detector operating mode setup Address : 09 hex D[7:5] = EINV1[0], EINE1[0], EIN1L[0] D[7:5] Symbol Mode setup D[7] EINV1[0] Pressure threshold detector output polarity setup EEPROM 0 EINV11 High output when detected (default) 1 EINV10 Low output when detected D[6] EINE1[0] Pressure threshold detector enabled setup EEPROM 0 INT1E Pressure threshold detector 1 enable (default) 1 INT1D Pressure threshold detector 1 disable D[5] EIN1L[0] Pressure threshold detector 1 detection threshold setup EEPROM 0 INT1< Detect pressure above threshold (default) 1 INT1> Detect pressure below threshold Address : 0B hex D[4] = EPTH1[0] D[4] Symbol Mode setup D[4] EPTH1[0] Pressure threshold detector 1 detection threshold selection EEPROM 0 PTH1R EEPROM setup (default) 1 PTH1E DET2/PTH pin external setup g.2) Pressure threshold detector detection threshold adjustment Address : 09 hex D[4:0] = EPT1[4:0] EPT1[4:0] Detection threshold (V) Dec Hex Bin Detect threshold ex. VDD:5V -16 10 10000 0.900*VDD 4.500 -15 11 10001 0.875*VDD 4.375 -14 12 10010 0.850*VDD 4.250 ： ： ： ： ： -3 1D 11101 0.575*VDD 2.875 -2 1E 11110 0.550*VDD 2.750 -1 1F 11111 0.525*VDD 2.625 0 00 00000 0.500*VDD 2.500 1 01 00001 0.475*VDD 2.375 2 02 00010 0.450*VDD 2.250 ： ： ： ： ： 14 0E 01110 0.150*VDD 0.750 15 0F 01111 0.125*VDD 0.625 Description Default g.3) Comparator hysteresis voltage adjustment for pressure threshold detection Address : 0B hex D[1:0] = EHYS1[1:0] EHYS1[1:0] Hysteresis voltage (mV) Description Dec Hex Bin Hysteresis voltage ex. VDD:5V 2 2 10 0.030*VDD 150.0 3 3 11 0.040*VDD 200.0 0 0 00 0.050*VDD 250.0 Default 1 1 01 0.060*VDD 300.0 MS1600-E-00 2014/05 - 56 - CONFIDENTIAL [AK8999A/AW/AD] h) Pressure threshold detector 2 (EEPROM name: PTH2, HYS2) The operating mode, the detection threshold values and the hysteresis voltage of the comparator for the pressure threshold detector 2 are set up. The detector threshold voltage and the hysteresis voltage vary ratiometrically with respect to the supply voltage. h.1) Pressure threshold detector operating mode setup Address : 0A hex D[7:5] = EINV2[0], EINE2[0], EIN2L[0] D[7:5] Symbol Mode setup D[7] EINV2[0] Pressure threshold detector output polarity setup EEPROM 0 EINV21 High output when detected (default) 1 EINV20 Low output when detected D[6] EINE2[0] Pressure threshold detector enabled setup EEPROM 0 INT2E Pressure threshold detector 2 enable (default) 1 INT2D Pressure threshold detector 2 disable D[5] EIN2L[0] Pressure threshold detector 2 detection threshold setup EEPROM 0 INT2< Detect pressure above threshold (default) 1 INT2> Detect pressure below threshold h.2) Pressure threshold detector detection threshold adjustment Address : 0A hex D[4:0] = EPT2[4:0] EPT2[4:0] Detection threshold (V) Dec Hex Bin Detect threshold ex. VDD:5V -16 10 10000 0.900*VDD 4.500 -15 11 10001 0.875*VDD 4.375 -14 12 10010 0.850*VDD 4.250 ： ： ： ： ： -3 1D 11101 0.575*VDD 2.875 -2 1E 11110 0.550*VDD 2.750 -1 1F 11111 0.525*VDD 2.625 0 00 00000 0.500*VDD 2.500 1 01 00001 0.475*VDD 2.375 2 02 00010 0.450*VDD 2.250 ： ： ： ： ： 13 0D 01101 0.175*VDD 0.875 14 0E 01110 0.150*VDD 0.750 15 0F 01111 0.125*VDD 0.625 Description Default h.3) Comparator hysteresis voltage adjustment for pressure threshold detection Address : 0B hex D[3:2] = EHYS2[1:0] EHYS2[1:0] Hysteresis voltage (mV) Description Dec Hex Bin Hysteresis voltage ex. VDD:5V 2 2 10 0.030*VDD 150.0 3 3 11 0.040*VDD 200.0 0 0 00 0.050*VDD 250.0 Default 1 1 01 0.060*VDD 300.0 MS1600-E-00 2014/05 - 57 - CONFIDENTIAL i) [AK8999A/AW/AD] Input gain adjustment (EEPROM name: ING) This EEPROM is used for setting the total gain. The input gain is adjusted according to the full-scale voltage of the pressure sensor. Address : 0C hex D[4:0] = EIG[4:0] EIG[3:0] G1 Gain (times) Dec Hex Bin 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 0 1 2 3 4 5 6 7 8 9 A B C D E F 0000 0001 0010 0011 0100 0101 0110 0111 1000 1001 1010 1011 1100 1101 1110 1111 70.0 60.0 50.0 40.0 35.0 30.0 25.0 20.0 15.0 12.0 10.0 7.0 5.0 Setup prohibited G1*G2 Gain (times) EIG[4]=0 EIG[4]=1 G2: 3x G2: 1.5x 210.0 105.0 180.0 90.0 150.0 75.0 120.0 60.0 105.0 52.5 90.0 45.0 75.0 37.5 60.0 30.0 45.0 22.5 36.0 18.0 30.0 15.0 21.0 10.5 15.0 7.5 Setup prohibited MS1600-E-00 Description Default Setup prohibited 2014/05 - 58 - CONFIDENTIAL j) [AK8999A/AW/AD] Measurement mode setup (EEPROM name: MM1, MM2) This EEPROM is used for setting up the measurement mode for the AK8999A. A setup of a sampling frequency, supply voltage & sensor drive voltage, the enable / disable of Internal SCF & SMF, the internal / external of a temperature sensor, the internal switching of VP & VN, and the initial state of VOUT pin at power-up can be performed. Address : D[7:0] D[7] 0 1 D[6:5] 00 01 10 11 D[4:3] 00 01 10 11 D[2:1] 00 01 10 11 D[0] 0 1 0D hex D[7:0] = ESCF[1:0], EVD[1:0], ESF[0] , EVPN[0], ETMP[1:0] Symbol Mode setup EVPN[0] VP & VN internal switching EEPROM VPNN VP->VP, VN->VN (default) VPNR VP->VN, VN->VP ETMP[1:0] Temperature sensor Internal & External change EEPROM TMPESi External temperature sensor use & Drive sink current (default) TMPESo External temperature sensor use & Drive source current TMPI Internal temperature sensor use Reserved Setup prohibited ESCF[1:0] Internal SCF & SMF setup EEPROM SCDS Internal SCF & SMF disable (default) SCEN1 Internal SCF & SMF enable & Cutoff frequency 1kHz SCEN2 Internal SCF & SMF enable & Cutoff frequency 500Hz SCEN3 Internal SCF & SMF enable & Cutoff frequency 250Hz EVD[1:0] Supply voltage & sensor drive voltage setup EEPROM VDD302 Supply voltage at 3V & sensor drive voltage at 2.2V (default) VDD332 Supply voltage at 3.3V & sensor drive voltage at 2.2V VDD502 Supply voltage at 5V & sensor drive voltage at 2.2V VDD504 Supply voltage at 5V & sensor drive voltage at 4V ESF[0] Sampling frequency setup EEPROM SF11 Sampling frequency 8.33kHz (default) SF1 Sampling frequency 0.83kHz Address : 0E hex D[1:0] D[1:0] Symbol D[1:0] EVOUT[1:0] 00 STVSS 01 STVDD 10 ST1/2VDD 11 Reserved = EVOUT[1:0] Mode setup Initial state of VOUT pin at power-up setup EEPROM VSS set at power-up (default) VDD set at power-up 0.5*VDD set at power-up Setup prohibited MS1600-E-00 2014/05 - 59 - CONFIDENTIAL [AK8999A/AW/AD] k) VREF voltage adjustment (EEPROM name: VREF) This EEPROM is used for adjusting the AK8999A reference voltage. Perform an adjustment to attain the reference voltage of 1000mV (See “Recommended External Circuits”). ΔVREF3/5 in the table below indicates a value varying with the setup values of the EEPROM. ΔVS3/5 represents the values of ΔVREF3/5 multiplied by two and four, respectively. The ratio in the table below is benchmarked to 1000mV (VREF ideal value) as 100% (Ratio = (ΔVREF3/5) /1000[mV]*100[%]). Address : 0F hex D[2:0] = EVR[2:0] EVR[2:0] Ratio VDD:3V, 3.3V mode ΔVREF3 ΔVS3 Dec Hex Bin (%) (mV) (mV) -4 4 100 -4 -40 -80 -3 5 101 -3 -30 -60 -2 6 110 -2 -20 -40 -1 7 111 -1 -10 -20 0 0 000 0 0 0 1 1 001 1 +10 +20 2 2 010 2 +20 +40 3 3 011 3 +30 +60 l) VDD:5V ΔVREF5 ΔVS5 (mV) (mV) -40 -160 -30 -120 -20 -80 -10 -40 0 0 +10 +40 +20 +80 +30 +120 Description Default IREF current adjustment (EEPROM name: IREF) This EEPROM is used for adjusting the AK8999A reference current. The external resistor (1M) is connected to VOUT pin. The reference current is adjusted so that the voltage droped by external resistor may be set to 1.0V. (See “Recommended External Circuits”). IREF in the table below indicates a current value with the setup values of the EEPROM. VIREF (=IREF*1[MΩ]) is a voltage value varying with the external resistance (1MΩ) at the time of adjustment. The ratio is benchmarked to 1.0µA (IREF ideal value) as 100% (Ratio = (IREF-1.0 [µA])/1.0 [µA]*100[%]). Address : 0F hex D[7:4] = EIR[3:0] EIR[3:0] Ratio Dec Hex Bin (%) -8 8 1000 -17.0 -7 9 1001 -15.2 -6 A 1010 -13.4 -5 B 1011 -11.5 -4 C 1100 -9.5 -3 D 1101 -7.3 -2 E 1110 -5.0 -1 F 1111 -2.6 0 0 0000 0.0 1 1 0001 2.8 2 2 0010 5.7 3 3 0011 8.8 4 4 0100 12.2 5 5 0101 15.9 6 6 0110 19.8 7 7 0111 24.1 IREF (μA) 0.830 0.848 0.866 0.885 0.905 0.927 0.950 0.974 1.000 1.028 1.057 1.088 1.122 1.159 1.198 1.241 MS1600-E-00 VIREF (V) 0.830 0.848 0.866 0.885 0.905 0.927 0.950 0.974 1.000 1.028 1.057 1.088 1.122 1.159 1.198 1.241 Description Default 2014/05 - 60 - CONFIDENTIAL [AK8999A/AW/AD] m) OSC frequency adjustment (EEPROM name: OSC) This EEPROM is used for adjusting the AK8999A operation clock. Perform an adjustment to attain a frequency of 1000kHz. Reading the ratio data from the OSC variable ratio storing register (Register name: CM2), the adjustment data of the OSC frequency adjustment EERPOM is calculated. Frequency Δf in the table below indicates a value varying with the setup values of the EEPROM. The ratio is benchmarked to 1000kHz (OSC ideal value) as 100% (Ratio = Frequency Δf/( Frequency Δf+1000[kHz])*100[%]). Address : 10 hex D[3:0] = EFR[3:0] EFR[3:0] Ratio FrequencyΔf Dec Hex Bin (%) (kHz) -5 B 1011 -34 -251 -4 C 1100 -25 -197 -3 D 1101 -17 -146 -2 E 1110 -11 -99 -1 F 1111 -5 -52 0 0 0000 0 0 1 1 0001 5 49 2 2 0010 10 106 3 3 0011 14 162 4 4 0100 18 224 5 5 0101 22 274 6 6 0110 25 329 7 7 0111 28 384 Note) Hex 8 to A are prohibited for setup. MS1600-E-00 Description Default 2014/05 - 61 - CONFIDENTIAL [AK8999A/AW/AD] n) VTMP voltage adjustment (EEPROM name: VTMP) Compensates the offset values for the AK8999A's internal temperature sensor and external temperature sensor. Adjusts the values so that the difference between VTMP voltage and VREF voltage is close to 0 mV (If VREF is 1005mV, adjust so that VTMP is also 1005mV). The coarse adjustment (ETM[8:6]) is invalid when the internal temperature sensor is used (ETMP[1:0] = 2h). The coarse adjustment is effective when the external temperature sensor is used (ETMP[1:0] = 0, 1h). ΔVTMP in the table below indicates a value varying with the setup values of the EEPROM. The ratio is benchmarked to 1000mV (VREF ideal value) as 100% (Ratio = ΔVTMP/1000[mV]*100[%]). Address : 11 hex D[5:0] = ETM[5:0] ETM[5:0] Ratio Dec Hex Bin (%) -32 20 100000 +6.4 ： ： ： ： -16 30 110000 +3.2 ： ： ： ： -8 38 111000 +1.6 ： ： ： ： -4 3C 111100 +0.8 ： ： ： ： -1 3F 111111 +0.2 0 00 000000 0.0 1 01 000001 -0.2 ： ： ： ： 4 04 000100 -0.8 ： ： ： ： 8 08 001000 -1.6 ： ： ： ： 16 10 010000 -3.2 ： ： ： ： 31 1F 011111 -6.2 Address : 10 hex D[6:4] = ETM[8:6] ETM[8:6] Ratio Dec Hex Bin (%) 4 4 100 Setup prohibited 5 5 101 Setup prohibited 6 6 110 +20.0 7 7 111 +10.0 0 0 000 0.0 1 1 001 -10.0 2 2 010 -20.0 3 3 011 Setup prohibited MS1600-E-00 ΔVTMP (mV) +64 ： +32 ： +16 ： +8 ： +2 0 -2 ： -8 ： -16 ： -32 ： -62 ΔVTMP (mV) Setup prohibited Setup prohibited +200 +100 0 -100 -200 Setup prohibited Description Default Description Default 2014/05 - 62 - CONFIDENTIAL [AK8999A/AW/AD] o) User-writable data space (EEPROM name: UE) Free area (EEPROM) available to the user. Address : 12 hex D[7:0] = EUE[7:0] Data Name Content UE User-writable data Default D7 EUE7 0 D6 EUE6 0 D5 EUE5 0 D4 EUE4 0 D3 EUE3 0 D2 EUE2 0 D1 EUE1 0 D0 EUE0 0 p) Control register access setup (EEPROM name: MM3) The access setup to the control register (volatile memory) is performed. When the control register access setup is disabled (ETST[0] = 0h), the control register (C address: 0h) is fixed to the initial value, and cannot be accessed, unless control register access is validated. Address : 1D hex D[0] = ETST[0] D[0] Symbol Mode setup D[0] ETST[0] Control register access setup 0 TSTDS Control register access disable(default) 1 TSTEN Control register access enable q) EEPROM Write Enable setup (EEPROM name: EWE) The EEPROM write enable setup is performed. When the setup of EEPROM Write Enable is validated (EWE[0] = 1h), the writing to EEPROM is permitted. If it is invalid, the writing to EEPROM other then EEPROM Write Enable (address: 00 -1Dh, 1Fh) becomes impossible. And this address cannot be written by batch writing. However, EEPROM read (all the addresses) is possible even in that case. Address : 1E hex D[0] = EWE[0] D[0] Symbol Mode setup D[0] EWE[0] EEPROM Write Enable setup 0 WEDS EEPROM Write disable (default) 1 WEEN EEPROM Write enable r) EEPROM batch write mode (EEPROM name: AW) Initializes the addresses 00 hex to 1D hex in the EEPROM map at once or writes identical data. This address is not available in the EEPROM. Address : 1F hex D[7:0] = EAW[7:0] Name Content AW EEPROM batch write Data D7 D6 D5 D4 D3 D2 D1 D0 EAW7 EAW6 EAW5 EAW4 EAW3 EAW2 EAW1 EAW0 MS1600-E-00 2014/05 - 63 - CONFIDENTIAL [AK8999A/AW/AD] 6.2) Description of Control Register (Volatile Memory) a) Adjustment mode (Register name: CM1) This register is used to adjust the AK8999A reference voltage and pressure sensor's offset, span, offset temperature drift and sensitivity temperature drift including those of the AK8999A. In addition, the value of the register returns to the initial value on the following conditions. ■ ■ ■ At the power up When CSCLK = Low is maintained 0.5msec or more When ETST[0] is set to "L" Address : 00 hex D[3:0] = AM[3:0] (This is not a nonvolatile EEPROM, but a volatile register.) D[7:0] Symbol Mode setup Description D[7:4] Reserved Setup prohibited D[3:0] AM[3:0] IC adjustment mode 0000 (default) 0001 AVR VREF adjustment The VREF voltage is output at the VOUT pin. 0010 AIR IREF adjustment The IREF current is output at the VOUT pin. Input the fixed period of High level (2.0msec) from the 0011 AFR OSC adjustment CSCLK pin. The count value in the internal counter is stored in the register. The VTMP voltage is output at the VOUT pin. Adjust this voltage so that it matches the VREF 0100 ATO VTMP adjustment voltage at 25C. judge threshold 1 The internally set judge threshold value 1 is output at 0101 ADT1 adjustment the VOUT pin. judge threshold 2 The internally set judge threshold value 2 is output at 0110 ADT2 adjustment the VOUT pin. The hysteresis voltage of the comparator 1 is output at 0111 AHY1 hysteresis voltage 1 the VOUT pin. The hysteresis voltage of the comparator 2 is output at 1000 AHY2 hysteresis voltage 2 the VOUT pin. Output reference The output reference voltage is output at the VOUT 1001 ALV voltage adjustment pin. 1001Reserved Setup prohibited 1111 MS1600-E-00 2014/05 - 64 - CONFIDENTIAL [AK8999A/AW/AD] b) OSC variable ratio storing register (Register name: CM2) This register is used for adjustment of the oscillator frequency of AK8999A. The counted value in the internal counter is stored. Since the internal counter is overflowing when a count value shows FF hex, measure again by re-defining High level period. This register is read only. In addition, the value of the register returns to the initial value on the following conditions. ■ ■ ■ ■ At the power up When CM1 register is written When CSCLK = Low is maintained 0.5msec or more When ETST[0] is set to "L" Address : 01 hex D[7:0] = CT[7:0] (This is not a nonvolatile EEPROM, but a volatile register.) CT[7:0] Count value Ratio Description Dec Hex Bin (time) (%) 0 00 00000000 0 0 Default 1 01 00000001 1 -99 ： ： ： ： ： 98 62 01100010 98 -2 99 63 01100011 99 -1 100 64 01100100 100 0 Ideal value 101 65 01100101 101 1 102 66 01100110 102 2 ： ： ： ： ： 254 FE 11111110 254 154 255 FF 11111111 Counter error MS1600-E-00 2014/05 - 65 - CONFIDENTIAL [AK8999A/AW/AD] 17. Recommended External Circuits 1) VO pin connection example 146.kohm VO 0F – 3F VOUT Buffer& SMF Inside AK8999A/W/D 2) Power supply pin connection example VDD 1.0F±10 VSS InsideAK8999A/W/D 3) VOUT pin connection examples for adjustment 1) VREF etc. adjustment Control register (AVR etc.) VREF etc. VOUT Voltage Meter 1k Inside AK8999A/W/D 1M 2) IREF adjustment Control register (AIR) IREF VOUT Voltage Meter 1k Inside AK8999A/W/D 1M 3) VTMP adjustment 3.1) Internal Temp. sensor Control register (ATO) EXTMP VTMP VOUT Voltage Meter 1k Inside AK8999A/W/D 1M 3.2) External Temp. sensor VS EEPROM register (TMPESO) Control register (ATO) EXTMP Control register (ATO) VOUT VOUT Voltage Meter VTMP EXTMP VTMP Inside AK8999A/W/D 1k Inside AK8999A/W/D EEPROM register (TMPESI) Voltage Meter 1k 1M 1M MS1600-E-00 2014/05 - 66 - CONFIDENTIAL [AK8999A/AW/AD] 18. Package 1) Outline Dimensions The rear-side TAB is recommended to be mounted on the substrate to ensure strength. Do not connect to the power supply, GND or any signal. [Detail A] 2) Marking 9 (1) Pin Number 1 indication mark (2) Part Number 13 (3) Date Code (3 digits) 8999A (3) X1 X2 X3 (2) 5 (1) 1 MS1600-E-00 2014/05 - 67 - CONFIDENTIAL [AK8999A/AW/AD] IMPORTANT NOTICE 0. Asahi Kasei Microdevices Corporation (“AKM”) reserves the right to make changes to the information contained in this document without notice. When you consider any use or application of AKM product stipulated in this document (“Product”), please make inquiries the sales office of AKM or authorized distributors as to current status of the Products. 1. All information included in this document are provided only to illustrate the operation and application examples of AKM Products. AKM neither makes warranties or representations with respect to the accuracy or completeness of the information contained in this document nor grants any license to any intellectual property rights or any other rights of AKM or any third party with respect to the information in this document. You are fully responsible for use of such information contained in this document in your product design or applications. AKM ASSUMES NO LIABILITY FOR ANY LOSSES INCURRED BY YOU OR THIRD PARTIES ARISING FROM THE USE OF SUCH INFORMATION IN YOUR PRODUCT DESIGN OR APPLICATIONS. 2. The Product is neither intended nor warranted for use in equipment or systems that require extraordinarily high levels of quality and/or reliability and/or a malfunction or failure of which may cause loss of human life, bodily injury, serious property damage or serious public impact, including but not limited to, equipment used in nuclear facilities, equipment used in the aerospace industry, medical equipment, equipment used for automobiles, trains, ships and other transportation, traffic signaling equipment, equipment used to control combustions or explosions, safety devices, elevators and escalators, devices related to electric power, and equipment used in finance-related fields. Do not use Product for the above use unless specifically agreed by AKM in writing. 3. Though AKM works continually to improve the Product’s quality and reliability, you are responsible for complying with safety standards and for providing adequate designs and safeguards for your hardware, software and systems which minimize risk and avoid situations in which a malfunction or failure of the Product could cause loss of human life, bodily injury or damage to property, including data loss or corruption. 4. Do not use or otherwise make available the Product or related technology or any information contained in this document for any military purposes, including without limitation, for the design, development, use, stockpiling or manufacturing of nuclear, chemical, or biological weapons or missile technology products (mass destruction weapons). When exporting the Products or related technology or any information contained in this document, you should comply with the applicable export control laws and regulations and follow the procedures required by such laws and regulations. The Products and related technology may not be used for or incorporated into any products or systems whose manufacture, use, or sale is prohibited under any applicable domestic or foreign laws or regulations. 5. Please contact AKM sales representative for details as to environmental matters such as the RoHS compatibility of the Product. Please use the Product in compliance with all applicable laws and regulations that regulate the inclusion or use of controlled substances, including without limitation, the EU RoHS Directive. AKM assumes no liability for damages or losses occurring as a result of noncompliance with applicable laws and regulations. 6. Resale of the Product with provisions different from the statement and/or technical features set forth in this document shall immediately void any warranty granted by AKM for the Product and shall not create or extend in any manner whatsoever, any liability of AKM. 7. This document may not be reproduced or duplicated, in any form, in whole or in part, without prior written consent of AKM. MS1600-E-00 2014/05 - 68 -