AS6200C-AWLT-L

Product Document Published by ams OSRAM Group Datasheet DS000563 AS6200C Digital Temperature Sensor v4-00 • 2021-Oct-18 Document Feedback AS6200C Content Guide Content Guide 1 General Description ...................... 3 1.1 1.2 1.3 Key Benefits & Features ............................... 3 Applications .................................................. 3 Block Diagram .............................................. 4 2 Ordering Information .................... 5 3 Pin Assignment ............................. 6 3.1 3.2 Pin Diagram .................................................. 6 Pin Description ............................................. 6 4 Absolute Maximum Ratings ......... 7 5 Typical Operating Characteristics 8 5.1 5.2 Analog System Parameters.......................... 8 Digital System Parameters ........................... 9 6 Register Description ....................10 6.1 Register Overview ...................................... 10 Datasheet • PUBLIC DS000563 • v4-00 • 2021-Oct-18 6.2 6.3 Detailed Register Description ..................... 11 Serial Interface ........................................... 21 7 Application Information............... 29 7.1 External Components ................................. 30 8 Package Drawings & Markings ... 31 9 Revision Information ................... 33 10 Legal Information ......................... 34 34 │ 2 Document Feedback 1 AS6200C General Description General Description The AS6200C IC is a high accuracy temperature sensor system that communicates via a 2-wire digital bus with other devices. It consists of a Si bandgap temperature sensor, an ADC and a digital signal processor. It has a very high temperature accuracy (±0.2 °C between -10 °C to 20 °C) and an ultra-low power consumption (low operation and quiescent current) which makes it ideally suited for mobile/battery powered applications. The AS6200C is an easy to integrate and use solution, featuring a factory calibrated sensor, integrated linearization and the possibility to use 2 different I²C addresses, enabling to use two AS6200C devices on one bus. Additionally the AS6200C temperature sensor system also features an alert functionality, which triggers e.g. an interrupt to protect devices from excessive temperatures. 1.1 Key Benefits & Features The benefits and features of AS6200C, are listed below: Figure 1: Added Value of Using AS6200C 1.2 Benefits Features High Measurement Accuracy ± 0.2 °C (-10 °C to 20 °C) ± 0.25 °C (-20 °C to -10 °C) ± 0.4 °C (20 °C to 65 °C) ± 1 °C remaining operating temperature span Low Power Consumption 6 µA @Operation (typical, @ 4 Hz) 0.1 µA @Standby (typical) Supply Voltage Range 1.8 – 3.6 V Small PCB Footprint 1.5 mm x 1 mm (WLCSP) Applications ● ● ● Cold chain monitoring data loggers Cold chain storage systems Refrigerators and cooling systems Datasheet • PUBLIC DS000563 • v4-00 • 2021-Oct-18 34 │ 3 Document Feedback 1.3 AS6200C General Description Block Diagram The functional blocks of this device are shown below: Figure 2: Functional Blocks of AS6200C ALERT In Figure 2, the functional blocks are depicted. The sensing element for sensing the temperature is a Si bipolar transistor. The analog signal of the sensing element is converted into a digital signal by the A/D converter and the signal is further processed by a digital signal processor and written into the registers. The registers can be accessed via the serial bus interface (I²C bus). Datasheet • PUBLIC DS000563 • v4-00 • 2021-Oct-18 34 │ 4 Document Feedback 2 AS6200C Ordering Information Ordering Information Ordering Code Package Marking Delivery Form Delivery Quantity AS6200C-AWLM-S WLCSP AS6MCC Tape & Reel 500 pcs/reel AS6200C-AWLT-L WLCSP AS6MCC Tape & Reel 5000 pcs/reel Datasheet • PUBLIC DS000563 • v4-00 • 2021-Oct-18 34 │ 5 Document Feedback 3 Pin Assignment 3.1 Pin Diagram AS6200C Pin Assignment Figure 3: Pin Assignment WLCSP In Figure 3 the pin assignment of the WLCSP package is shown The viewing side is from the bottom. The A1 pin is also marked with a point on the top side. 3.2 Pin Description Figure 4: Pin Description of AS6200C (WLCSP) Pin Number Pin Name Pin Type(1) Description A1 ALERT DO_OD Alert output (interrupt), external pull up resistors is recommended A2 VSS S Ground Pin A3 SCL DI_S Serial Interface Clock, external pull up resistors is recommended B1 ADD0 DI_S Address Select Pin, must not be left unconnected (refer to the bus address section for further details). B2 VDD S Positive Supply Voltage B3 SDA DIO_SOD Serial Interface Data, external pull up resistors is recommended (1) Explanation of abbreviations: S Supply DO_OD Digital output - open drain DI_S Digital Schmitt trigger input DIO_SOD Digital Schmitt trigger input/output- open drain Datasheet • PUBLIC DS000563 • v4-00 • 2021-Oct-18 34 │ 6 Document Feedback 4 AS6200C Absolute Maximum Ratings Absolute Maximum Ratings Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only. Functional operation of the device at these or any other conditions beyond those indicated under “Operating Conditions” is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Figure 5: Absolute Maximum Ratings of AS6200C Symbol Parameter Min Max Unit Comments Electrical Parameters VSUP / VGND Supply Voltage to Ground -0.3 4 V VIN Input Pin Voltage to Ground -100 100 V Electrostatic Discharge ESDHBM Electrostatic Discharge HBM ±2000 V Temperature Ranges and Storage Conditions TA Operating Ambient Temperature TJ Operating Junction Temperature TSTRG Storage Temperature Range TBODY Package Body Temperature RHNC Relative Humidity (noncondensing) MSL Moisture Sensitivity Level (1) -40 -55 5 1 125 °C 125 °C 125 °C 260 °C 85 % IPC/JEDEC J-STD-020(1) Unlimited floor life The reflow peak soldering temperature (body temperature) is specified according to IPC/JEDEC J-STD-020 “Moisture/Reflow Sensitivity Classification for Nonhermetic Solid State Surface Mount Devices”. Datasheet • PUBLIC DS000563 • v4-00 • 2021-Oct-18 34 │ 7 Document Feedback 5 AS6200C Typical Operating Characteristics Typical Operating Characteristics The AS6200C is a complete sensor system that has an integrated sensing element, the analog frontend, the A/D converter and the digital signal processing part. The digital signal processing part consists of the signal processor, the registers and the serial bus interface. 5.1 Analog System Parameters Figure 6: Analog System Parameters of AS6200C Parameter Symbol Min Typ Max Unit Note Supply Voltage VDD 1.8 2.0 3.0 3.0 3.6 3.6 V T= 0 °C to125 °C T=-40 °C to 125 °C Temperature Range T -40 125 °C Standby Current Consumption IDD 0.4 0.9 µA 0.1 0.3 7 Current Consumption (4 conversion /s) IDD Accuracy(1) T_ERR Resolution N Conversion Time TS Conversion Rate -1.0 -0.4 -0.2 -0.2 -0.4 -1.0 TRise_VDD Supply Voltage Slew Rate SR_VDD µA 24 T=-40 °C to 65 °C Serial bus inactive 16 T=65 °C to 125 °C Serial bus inactive +1.0 +0.4 +0.25 + 0.2 +0.4 +1.0 T=-40 °C to -30 °C T=-40 °C to -20 °C T=-20 °C to -10 °C T=-10 °C to 20 °C T=20 °C to 50 °C T=50 °C to 125 °C 12 NS Supply Voltage Rise Time (1) 6 T=-40 °C to 65 °C T=65 °C to 125 °C °C Bit 34 46 0.25 1 4 8 0.35 1.35 5.5 10.7 Conv/s 20 ms 0.1 V to 1.6 V mV/ms 0.1 V to 1.6 V 50 ms CR[1:0]=00 CR[1:0]=01 CR[1:0]=10 CR[1:0]=11 The accuracy is based on measurements and reflects 3 σ statistics. Datasheet • PUBLIC DS000563 • v4-00 • 2021-Oct-18 34 │ 8 Document Feedback 5.2 AS6200C Typical Operating Characteristics Digital System Parameters Figure 7: Digital System Parameters of AS6200C Parameter Symbol Pins Min High level input voltage V_IH SCL, ADD0, SDA 0.7 * VDD Low level input voltage V_IL SCL,ADD0, SDA 0.3 * VDD V Low level output voltage V_OL Alert, SDA VSS+0.4 V Alert pin: I_OL=3 mA(1) Tristate leakage current I_OZ SDA 10 µA to VSS (1) -10 Max Unit Note V This value describes the minimum current sank of Alert pin at maximum V_OL (Low level output voltage). Datasheet • PUBLIC DS000563 • v4-00 • 2021-Oct-18 34 │ 9 Document Feedback 6 Register Description 6.1 Register Overview AS6200C Register Description Figure 8: Register Map with Serial Interface 0x0 0x1 0x2 0x3 TVAL (Read Only) CONFIG (Read/Write) TLOW (Read/Write) SCLK Serial Interface SDA THIGH (Read/Write) INDEX (Read/Write) In Figure 8 the registers that the device contains are shown. With the use of the index register, it is possible to address the specific register. The index register is an 8-bit register, where only bits 0 and 1 are used as shown in Figure 9 and all other bits are set to 0 and read only. 6.1.1 Index Register Figure 9: Index Register Bit Bit Name Default Access 0 Address Bit 0 RW 1 Address Bit 0 RW 2 Reserved 0 RO 3 Reserved 0 RO 4 Reserved 0 RO 5 Reserved 0 RO 6 Reserved 0 RO 7 Reserved 0 RO Datasheet • PUBLIC DS000563 • v4-00 • 2021-Oct-18 34 │ 10 Document Feedback AS6200C Register Description Figure 10: Register Map Address Symbol Register Description 0x0 TVAL Temperature Register Contains the temperature value 0x1 CONFIG Configuration Register Configuration settings of the temperature sensor 0x2 TLOW TLOW Register Low temperature threshold value 0x3 THIGH THIGH Register High temperature threshold value The 2-bit addresses in the index register define the access to the registers shown in Figure 10. This means that in order to access the different registers, the index register must be set accordingly. With the exception of the TVAL register (which contains the temperature value data), all registers are read/write accessible. 6.2 Detailed Register Description 6.2.1 Configuration Register (Address 0x1) Figure 11: CONFIGURATION Register Address 0x1 Bit Bit Name Default Access Bit Description 0 Reserved 0 RO Reserved 1 Reserved 0 RO Reserved 2 Reserved 0 RO Reserved 3 Reserved 0 RO Reserved 4 Reserved 0 RO Reserved, do not change 5 AL 1 RO ALERT Bit (AL) 6 CR 0 RW Conversion RATE (CR) 7 CR 1 RW Conversion RATE (CR) 8 SM 0 RW Sleep Mode (SM) 9 IM 0 RW Interrupt Mode (IM) 10 POL 0 RW Polarity (POL) 11 CF 0 RW Consecutive Faults (CF) 12 CF 0 RW Consecutive Faults (CF) Datasheet • PUBLIC DS000563 • v4-00 • 2021-Oct-18 34 │ 11 Document Feedback AS6200C Register Description Address 0x1 Bit Bit Name Default Access Bit Description 13 Reserved 0 RO Reserved 14 Reserved 1 RO Reserved 15 SS 0 RW Single Shot The configuration register is a 16-bit register, which defines the operation modes of the device. Any read/write operations processes the MSB byte first. In Figure 11 the configuration register is shown. The bits 0-4 and 13-14 are not to be used and are set to read only. The bit 4 is RW and must not be changed from the default value. The explanation of the other bits are described in detail in the following sections: 6.2.2 Alert Bit The alert bit can be used to easily compare the current temperature reading to the thresholds that can be set in the TLWO and THIGH registers. If the polarity bit is set to 0, the AL bit is read as 1 until the converted temperature value exceeds the defined value in the high temperature threshold register THIGH for the number of defined consecutive faults (bits CF). Such an event causes the AL bit to toggle to 0 and the value is kept until the converted temperature value falls below the defined value in the low temperature threshold register TLOW for the number of defined consecutive faults. If this condition is met, the AL bit is reset to 1. The polarity bit (POL) defines the active state of the alert bit as depicted in the following figure. The alert bit has the same setting as the alert output as long as the device is configured for the comparator mode. Figure 12: State Diagram of the Alert Bit Datasheet • PUBLIC DS000563 • v4-00 • 2021-Oct-18 34 │ 12 Document Feedback 6.2.3 AS6200C Register Description Conversion Rate Bits The conversion rate bits define the number of executed temperature conversions per time unit. Additional readouts of the temperature register between conversions is possible but not recommended because the value is changed only after a conversion is finished. Values of 125 ms, 250 ms, 1s and 4s per conversion can be configured while the default rate is set to 250 ms. This corresponds to a value of four conversions per second. The following table summarizes the different configuration settings: Figure 13: Conversion Rate Configuration Conversion Rate Bits Conversion Rate Conversion Frequency Bit 7 Bit 6 0 0 4s 0.25 Hz 0 1 1s 1 Hz 1 0 250 ms 4 Hz (default) 1 1 125 ms 8 Hz The device immediately starts a conversion after a power-on sequence and provides the first result after conversion time TS. A higher power consumption occurs during the actual conversion while the device stays in the standby mode after a finished conversion until the next conversion is activated as shown in the following figure. Figure 14: Conversion Sequence 6.2.4 Sleep Mode The sleep mode is activated by setting the bit SM in the configuration register to 1. This shuts the device down immediately and reduces the power consumption to a minimum value. Datasheet • PUBLIC DS000563 • v4-00 • 2021-Oct-18 34 │ 13 Document Feedback AS6200C Register Description Entering the sleep mode will take some time (120 ms maximum) and the first conversion after the sleep mode takes longer than the values specified in Figure 6. Therefore, it is recommended to trigger a single shot conversion at the same time while entering sleep mode. After 150ms, the device enters the sleep mode and subsequent conversion times are as specified in Figure 6. The serial interface is the only active circuitry in the sleep mode in order to provide access to the digital registers. After resetting the SM bit to 0, the device enters the continuous conversion mode. Figure 15: Sleep Mode Configuration 6.2.5 Sleep Mode Bit Operation Mode 0 Continuous Conversion Mode 1 Sleep Mode Interrupt Mode The interrupt mode bit defines whether the device operates in the temperature comparator mode or the interrupt mode. This defines the operation of the ALERT output as described in the polarity section bit. Figure 16: Interrupt Mode Configuration Interrupt Mode Bit Header Row Left Aligned 0 Comparator Mode 1 Interrupt Mode The comparator mode: If the temperature value exceeds the THIGH value, the alert output is changed (e.g. from high to low if the polarity bit is set to 0 and vice versa). The alert output stays in that condition until the measured temperature drops below the defined TLOW value. The interrupt mode: The alert output changes as soon as the measured temperature crosses the THIGH or TLOW value threshold. The alert bit has the same setting as the alert output if the device is set to comparator mode. Datasheet • PUBLIC DS000563 • v4-00 • 2021-Oct-18 34 │ 14 Document Feedback AS6200C Register Description Figure 17: Alert Output Functionality 6.2.6 Polarity Bit The polarity bit configures the polarity of the ALERT output. If the polarity bit is cleared, the ALERT output is low active while it becomes high active if the polarity bit is set to ‘1’. Figure 18: Polarity Bit Configuration Polarity Bit ALERT Output 0 Active low 1 Active high Datasheet • PUBLIC DS000563 • v4-00 • 2021-Oct-18 34 │ 15 Document Feedback 6.2.7 AS6200C Register Description Consecutive Faults A fault condition persists if the measured temperature either exceeds the configured value in register THIGH or falls below the defined value in register TLOW. As a result, the ALERT pin indicates the fault condition if a defined number of consecutive temperature readings meets this fault condition. The number of consecutive faults are defined with two bits (12 and 11) and prevent a false alert if environmental temperature noise is present. The register configuration is shown in the following table. Figure 19: Consecutive Faults Bit Settings Consecutive Fault Bits 6.2.8 Consecutive Faults (N) Bit 12 Bit 13 0 0 1 0 1 2 1 0 3 1 1 4 Single Shot Conversion The device features a single shot measurement mode if the device is in sleep mode (SM=1). By setting the “Single Shot-bit” to 1, a single temperature conversion is started and the SS-bit can be read as 1 during the active conversion operation. Once the conversion is completed, the device enters the sleep mode again and the SS-bit is set to 0. The single shot conversion allows very low power consumption since a temperature conversion is executed on demand only. This allows a user defined timing of the temperature conversions to be executed and is used if the consecutive operation mode is not required. The recommendation to trigger the first conversion simultaneously with entering the sleep mode is described in detail in section: Sleep Mode As the device exhibits a very short conversion time, the effective conversion rate can be increased by setting the single shot bit repetitively after a conversion has finished. However, it has to be ensured that the additional power is limited; otherwise, self-heating effects have to be considered. Figure 20: Single Shot Conversion Bit Settings Single Shot Bit Conversion 0 No conversion ongoing/ conversion finished 1 Start single shot conversion / conversion ongoing Datasheet • PUBLIC DS000563 • v4-00 • 2021-Oct-18 34 │ 16 Document Feedback 6.2.9 AS6200C Register Description High and Low Limit Registers If the comparator mode is configured (IM=0), the ALERT output becomes active if the temperature equals or exceeds the defined value in register THIGH for the configured number of consecutive faults (N). This configuration is defined by the field CF in the configuration register. The ALERT output remains assigned until the converted temperature value equals or falls below the defined value in register TLOW for the same number of consecutive fault cycles. If the interrupt mode is configured (IM=1), the ALERT output becomes active if the temperature equals or exceeds the defined value in register THIGH for the configured number of consecutive fault cycles. It remains active until a read operation is executed on any register. The ALERT output is also cleared if the device is set into sleep mode by setting bit SM in the configuration register. Once the ALERT output is cleared, it is activated again only if the temperature value falls below the configured value in register TLOW. It remains active unless a read operation has taken place. This sequence is repeated unless the device is set into the comparator mode or reset by the General Call Reset command. This reset command clears the interrupt mode bit and consequently puts the device into the comparator mode. The sequential behavior is summarized in the following figure. Datasheet • PUBLIC DS000563 • v4-00 • 2021-Oct-18 34 │ 17 Document Feedback AS6200C Register Description Figure 21: Alert Operation Modes Comparator Mode ALERT output cleared T ≤ TLOW for N consecutive cycles T ≥ THIGH for N consecutive cycles ALERT output active General Reset Command IM=0 IM=1 Interrupt Mode Read operation or Set to sleep mode ALERT output cleared ALERT output active T ≤ TLOW for N consecutive cycles T ≥ THIGH for N consecutive cycles ALERT output active ALERT output cleared Read operation or Set to sleep mode The following table defines the content of the registers TLOW and THIGH. For data transmission, the MSB byte is transmitted first, followed by the LSB byte. The data format for representing the threshold temperatures is equal to the temperature register (TVAL). After a power up, the registers are initialized with the following default values: Datasheet • PUBLIC DS000563 • v4-00 • 2021-Oct-18 34 │ 18 Document Feedback AS6200C Register Description Figure 22: Default Values for THIGH and TLOW Register Temperature Binary Value TLOW + 75 °C L11..L0 = 0100 1011 0000 THIGH + 80 °C H11..H0 = 0101 0000 0000 The following table defines the register bits of the THIGH and TLOW register. Figure 23: Register Bit Settings for THIGH/TLOW Address 0x2 / 0x3 Bit Bit Name for TLOW Bit Name for THIGH Access 0 0 0 RW 1 0 0 RW 2 0 0 RW 3 0 0 RW 4 L1 H1 RW 5 L2 H2 RW 6 L3 H3 RW 7 L4 H4 RW 8 L5 H5 RW 9 L6 H6 RW 10 L7 H7 RW 11 L8 H8 RW 12 L9 H9 RW 13 L10 H10 RW 14 L11 H11 RW 15 L12 H12 RW Datasheet • PUBLIC DS000563 • v4-00 • 2021-Oct-18 34 │ 19 Document Feedback 6.2.10 AS6200C Register Description Temperature Register (Address 0x0) Figure 24: Temperature Value Register Address 0x0 Bit Bit Name 0 0 1 0 2 0 3 0 4 T1 5 T2 6 T3 7 T4 8 T5 9 T6 10 T7 11 T8 12 T9 13 T10 14 T11 15 T12 The temperature register contains the digitally converted temperature value and can be read by setting the index pointer to the TVAL register (0x0). Two consecutive bytes must be read to obtain the complete temperature value. The MSB byte (Bits D15…D8) is transmitted upon the first read access and the LSB byte (Bits D7…D0) is transmitted after the second read access. The least significant bits D3…D0 are set to 0. A temperature value is represented as a two complement value in order to cover also negative values. After power up, the temperature value is read as 0°C until the first conversion has been completed. One LSB corresponds to 0.0625°C. The binary values can be calculated according to the following formulas: Positive values: |Value| / LSB Negative values: Complement (|Value| / LSB) + 1 Datasheet • PUBLIC DS000563 • v4-00 • 2021-Oct-18 34 │ 20 Document Feedback AS6200C Register Description Equation 1: Example 75 °C 75°𝐶 = 1200 = 𝐵𝑖𝑛𝑎𝑟𝑦 0100 1011 0000 = 𝐻𝑒𝑥 4𝐵0 0.0625°𝐶 Equation 2: Example -40 °C |−40°𝐶| + 1 = 640 + 1 = 𝐵𝑖𝑛𝑎𝑟𝑦 0010 1000 0000 + 1 = 1101 0111 1111 + 1 = 1101 10000 0000 0.0625°𝐶 = 𝐻𝑒𝑥 𝐷80 Figure 25: Temperature Conversion Examples 6.3 Temperature (°C) Digital Output (Binary) Digital Output (Hex) 100.0 0110 0100 0000 640 75.0 0100 1011 0000 4B0 50.0 0011 0010 0000 320 25.0 0001 1001 0000 190 0.125 0000 0000 0010 002 0.0625 0000 0000 0001 001 0.0 0000 0000 0000 000 -0.0625 1111 1111 1111 FFF -0.125 1111 1111 1110 FFE -25.0 1110 0111 0000 E70 -40.0 1101 1000 0000 D80 Serial Interface The device employs a standard I²C-serial bus. 6.3.1 Bus Description A data transfer must be invoked by a master device (e.g. microcontroller), which defines the access to the slave device. The master device defines and generates the serial clock (SCL) and the start/stop conditions. In order to address a specific device, the master device must generate a START condition by pulling the data line (SDA) from a logic high level to a logic low lev-el while the serial clock signal (SCL) is kept at high level. Datasheet • PUBLIC DS000563 • v4-00 • 2021-Oct-18 34 │ 21 Document Feedback AS6200C Register Description After the start condition, the slave address byte is transmitted which is completed with a ninth bit which indicates a read (bit=’1’) or a write operation (bit=’0’) respectively. All slaves read the data on the rising edge of the clock. An acknowledge signal is generated by the addressed slave during the ninth clock pulse. This acknowledge signal is produced by pulling the pin SDA to a low level by the selected slave. Subsequently, the byte data transfer is started and finished by an acknowledge bit. A change in the data signal (SDA) while the clock signal (SCL) is high causes a START or STOP condition. Hence, it must be ensured such a condition is prevented during a data transfer phase. After completing the data transfer, the master generates a STOP condition by pulling the data line (SDA) from low level to high level while the clock signal (SCL) is kept at high level. 6.3.2 Data Interface A bus connection is created by connecting the open drain input/output lines SDA and SCL to the twowire bus. The inputs of SDA and SCL feature Schmitt-trigger inputs as well as low pass filters in order to suppress noise on the bus line. This improves the robustness against spikes on the two-wire interface. Both fast transmission mode (1 kHz to 400 kHz) and high-speed transmission mode (1 kHz to 3.4 MHz) are employed to cover different bus speed settings. Any data transfer transmits the MSB first and the LSB as last bit. 6.3.3 Bus Address A slave address consists of seven bits, followed by a data direction bit (read/write operation). The slave address can be selected from a pool of two different address settings by connecting the input pin ADD0 to an appropriate signal as summarized in the following table. The ADD0 must be left open. Figure 26: I²C Address Select Configuration 6.3.4 ADD0 Connection Device Address (bin) Device Address (hex) VSS 0100 1000 0x48 VDD 0100 1001 0x49 Read/Write Operation In order to access an internal data register, the index register must be written in advance. This register contains the actual register address and selects the appropriate register for an access. A typical Datasheet • PUBLIC DS000563 • v4-00 • 2021-Oct-18 34 │ 22 Document Feedback AS6200C Register Description transfer consists of the transmission of the slave address with a write operation indication, followed by the transmission of the register address and is finalized with the actual register content data transfer. This implies that every write operation to the temperature sensor device requires a value for the index register prior to the transmission of the actual register data. The index register defines the register address for both the write and read operation. Consequently, if a read operation is executed, the register address is taken from the index register, which was defined from the last write operation. If a different register needs to be read, the index register has to be written in advance to define the new register address. This is accomplished by transmitting the slave address with a low R/W bit, followed by the new content of the index register. Subsequently, the master provokes a START condition on the bus and transmits the slave address with a high R/W bit in order to initiate a read operation. Since the index register always keeps its last value, reads can be executed repetitively on the same register. Similarly, to the byte transfer where the MSB is transmitted first, a two-byte transfer executes the transfer of a 16-bit word whereas the MSB byte is always transmitted first. 6.3.5 Slave Operation The device employs a slave functionality only (slave transmitter and slave receiver) and cannot operate as a bus master. Consequently, the device never actively drives the SCL line. 6.3.6 Slave Receiver Mode The master device invokes any transmission by transmitting the slave address with a low R/W bit. Subsequently, the slave device acknowledges the reception of the valid address by pulling the ninth bit to a low level. Following to acknowledge, the master transmits the content of the index register. The slave device again acknowledges this transfer. The next data byte(s) are written to the actual data register, which is selected by the index register while each transfer is acknowledged upon a completed transfer by the slave device. A data transfer can be finished if the master transmits a START or a STOP condition on the bus. 6.3.7 Slave Transmitter The master transmits the slave address with a high R/W bit. In turn, the slave acknowledges a valid slave address. Subsequently, the slave transmits the MSB byte of the actual selected data register by the index register. After the MSB byte transmission, acknowledge is sent by the master. Afterwards, the LSB byte is transmitted by the slave which is also acknowledged by the master after the completed transmission. The master can terminate the data transfer by transmitting a NotAcknowledge after the transmitted slave data or by invoking a START or a STOP condition on the bus. Datasheet • PUBLIC DS000563 • v4-00 • 2021-Oct-18 34 │ 23 Document Feedback 6.3.8 AS6200C Register Description Alert Function If the device is configured for an interrupt mode operation (IM=1), the ALERT output can be used as an alert signal. If the polarity bit is set to ‘0’ (POL=’0’), the alert condition bit is set to ‘0’ in case the temperature has exceeded the configured value in register THIGH. Accordingly, the alert condition bit is set to ‘1’ if the temperature has fallen below the configured value in register TLOW. If the polarity bit is set to ‘1’ (POL=’1’), the alert condition bit is inverted. The following table summarizes the status of the alert condition bit with different alert conditions and polarity configurations. Figure 27: Alert Condition Bit 6.3.9 Polarity Bit Alert Condition Alert Condition Bit (AC-Bit) 0 T ≥ THIGH 0 0 T ≤ TLOW 1 1 T ≥ THIGH 1 1 T ≤ TLOW 0 High Speed Mode The bus operation is limited to 400 kHz unless the master device issues a high-speed command as the first byte after a START condition. This switches the bus to a high-speed operation, which allows data transfer frequencies up to 3.4 MHz. The slave does not acknowledge such a command but the input-filter time constants on the serial interface (SDA and SCL) are adapted to allow the higher transfer rate. The slave does not acknowledge such a command but the input-filter time constants on the serial interface (SDA and SCL) are adapted to allow the higher transfer rate. After a high-speed command, the master transmits the slave address in order to invoke a data transfer. The bus keeps operating at the higher operating frequency until the master issues a STOP condition on the serial bus. Upon the reception of the STOP condition by the slave, the input filters are switched to their initial time constants, which allow lower transfer rates only. Figure 28: Summary of Bus Commands Command High Speed Command Datasheet • PUBLIC DS000563 • v4-00 • 2021-Oct-18 Address Data Value 0000 1xxx 34 │ 24 Document Feedback 6.3.10 AS6200C Register Description General Call A general call is issued by the master by transmitting the general call address (000 0000) with a low R/W bit. When this command is issued on the bus, the device acknowledges this command. The device also acknowledges the second byte but ignores the data. Subsequent bytes sent by the master during the general call are not acknowledged. 6.3.11 Start Byte When the master transmits address 000 0000 and a high R/W bit (“START byte”) the device acknowledges the address. The device then sends the MSB data byte and LSB data byte, where the data corresponds to the content of the register whose address has been last written to. After reset, this corresponds to the temperature register. 6.3.12 Timeout Function The serial interface of the slave device is reset if the clock signal SCL is kept low for typ. 30 ms. Such a condition results in a release of the data line by the slave in case it has been pulled to low level. The slave remains inactive after a timeout and waits for a new START command invoked by the bus master. In order to prevent a timeout, the bus transfer rate must be higher than 1 kHz. 6.3.13 Bus Conditions The following conditions occur on the serial bus, which is compatible to the I²C-Bus. Bus Idle The signals SDA and SCL are not actively driven and pulled to a high level by an external pull-up resistor. Start Data Transfer A transition of the SDA input from high to low level while the SCL signal is kept at high-level results in a START condition. Such a START condition must precede any data transfer. Stop Data Transfer A transition of the SDA input from low to high level while the SCL signal is kept at high-level results in a STOP condition. Any data transfer is finished by generating a STOP or START condition. Datasheet • PUBLIC DS000563 • v4-00 • 2021-Oct-18 34 │ 25 Document Feedback AS6200C Register Description Data Transfer The master device defines the number of data bytes between a START and STOP condition and there is no limitation of transmitted data. If it is desired to read only a single MSB byte without the LSB byte, a termination of the data transfer can be provoked by issuing a START or STOP condition on the bus. Acknowledge It is mandatory for each slave device to respond with acknowledge if the device is addressed by the master. Acknowledge is indicated by pulling down the data line (SDA) while the clock signal (SCL) is high in the acknowledge clock phase. In order to avoid an unwanted START or STOP condition on the bus, setup and hold times must be met. The master can signal an end of data transmission by transmitting a Not-Acknowledge on the last transmitted data byte by keeping the acknowledge bit at high level. 6.3.14 Timing Characteristics Figure 29: Serial Interface Timing Diagram STOP START tLOW tRISE START tHIGH STOP tFALL SCL SDA tBUF tHDSTA tSUDAT tHDDAT tSUSTA tSUSTO Figure 30: Bus Timing Specifications Fast Mode Parameter High Speed Mode Symbol Unit Min Max Min Max 0.4 0.001 3.4 SCL Clock Frequency fSCL 0.001 Bus free time between STOP and START condition tBUF 600 160 ns Hold time after repeated START condition tHDSTA 100 100 ns Datasheet • PUBLIC DS000563 • v4-00 • 2021-Oct-18 MHz 34 │ 26 Document Feedback AS6200C Register Description Fast Mode Parameter Unit Min Max Min Max Repeated START condition setup time tSUSTA 100 100 ns Data in hold time tHDDAT 10 10 ns tDH 100 100 ns Data setup time tSUDAT 100 10 ns SCL clock low period tLOW 1300 160 ns SCL clock high period tHIGH 600 60 ns Clock/Data fall time tF 300 160 ns Clock/Data rise time tR 300 160 ns Clock/Data rise time for SCL≤100 kHz tR 1000 Data out hold time (1) 6.3.15 High Speed Mode Symbol (1) ns The device will hold the SDA line high for 100 ns during the falling edge of the SCL. Timing Diagrams The following timing diagrams depict the different bus operation modes and data transmission: Figure 31: Timing Diagram for Word Write Frame 1: Slave Address Byte Frame 2: Index Register Byte 1 2 3 4 5 6 7 8 1 0 0 1 0 A1 A0 R/W 9 1 2 3 4 5 6 7 8 0 0 0 0 0 0 IX1 IX0 9 SCL SDA Start by master Values are defined by ADD0 pin setting Acknowledge by slave Acknowledge by slave Frame 3: MSB Data Byte Frame 4: LSB Data Byte 1 2 3 4 5 6 7 8 D7 D6 D5 D4 D3 D2 D1 D0 9 1 2 3 4 5 6 7 8 D7 D6 D5 D4 D3 D2 D1 D0 9 SCL (Continued) SDA (Continued) Acknowledge by slave Datasheet • PUBLIC DS000563 • v4-00 • 2021-Oct-18 Acknowledge Stop by slave by master 34 │ 27 Document Feedback AS6200C Register Description Figure 32: Timing Diagram for Word Read Datasheet • PUBLIC DS000563 • v4-00 • 2021-Oct-18 34 │ 28 Document Feedback 7 AS6200C Application Information Application Information Figure 33: Typical Application for the AS6200C Temperature Sensor VDD RPU Serial Interface Pull-up resistors SDA VDD Interrupt 10nF VDD ADD0 AS6200C Microcontroller (Bus Master) Slave SCL VSS ALERT Address Select In Figure 33 the connections of the AS6200C temperature sensors to a microcontroller and the supply voltage are shown. The AS6200C is connected to a microcontroller via an I²C bus (SDA and SCL only). Additionally the Alert output can also be used for temperature monitoring (e.g. using the interrupt mode, refer to IM bit settings), an example is given in Figure 33 where the Alert output is connected to microcontroller. The I²C of the AS6200C address of the can be selected by connecting the ADD0 pin to VDD or VSS (refer to Figure 26). This pin must not be left unconnected. Datasheet • PUBLIC DS000563 • v4-00 • 2021-Oct-18 34 │ 29 Document Feedback 7.1 AS6200C Application Information External Components Figure 34: Schematic with External Components VDD RPU Pull-up resistors SDA SDA VDD Decoupling Cap VDD ADD0 AS6200C Slave SCL SCL VSS ALERT ALERT Figure 35: Values for External Components Parameter Min Decoupling capacitor 10 Pull up resistors 10 Max Unit nF 15 kΩ In Figure 34 and Figure 35 the schematics and the recommended values for external components are shown. The decoupling capacitor for the supply should have a value of at least 10 nF. The pull up resistors on the serial interface and the interrupt also depend on the bus capacitance and on the clock speed. Datasheet • PUBLIC DS000563 • v4-00 • 2021-Oct-18 34 │ 30 Document Feedback 8 AS6200C Package Drawings & Markings Package Drawings & Markings Figure 36: WLCSP Package Outline Drawing Ref. Min Nom X 1450 1530 Y 960 1040 ax 325 dx 400 ay 280 dy 400 d 250 Thickness 525 Max (after reflow) RoHS Green (1) (2) (3) (4) All dimensions are in millimeters. Angles in degrees. Dimensioning and tolerance conform to ASME Y14.5M-1994. This package contains no lead (Pb). This drawing is subject to change without notice. Datasheet • PUBLIC DS000563 • v4-00 • 2021-Oct-18 34 │ 31 Document Feedback AS6200C Package Drawings & Markings Figure 37: WLCSP Package Marking/Code l XXXX AS6MCC XXXX Encoded Date code The actual date code is transformed in accordance to ASSY-346 to the four letter converted assembly code XXXX. Please refer to ASSY-346 for further information. Datasheet • PUBLIC DS000563 • v4-00 • 2021-Oct-18 34 │ 32 Document Feedback 9 AS6200C Revision Information Revision Information ● ● Document Status Product Status Definition Product Preview Pre-Development Information in this datasheet is based on product ideas in the planning phase of development. All specifications are design goals without any warranty and are subject to change without notice Preliminary Datasheet Pre-Production Information in this datasheet is based on products in the design, validation or qualification phase of development. The performance and parameters shown in this document are preliminary without any warranty and are subject to change without notice Datasheet Production Information in this datasheet is based on products in ramp-up to full production or full production which conform to specifications in accordance with the terms of ams AG standard warranty as given in the General Terms of Trade Datasheet (discontinued) Discontinued Information in this datasheet is based on products which conform to specifications in accordance with the terms of ams AG standard warranty as given in the General Terms of Trade, but these products have been superseded and should not be used for new designs Changes from previous version to current revision v4-00 Page Updated Figure 5 7 Page and figure numbers for the previous version may differ from page and figure numbers in the current revision. Correction of typographical errors is not explicitly mentioned. Datasheet • PUBLIC DS000563 • v4-00 • 2021-Oct-18 34 │ 33 Document Feedback 10 AS6200C Legal Information Legal Information Copyrights & Disclaimer Copyright ams AG, Tobelbader Strasse 30, 8141 Premstaetten, Austria-Europe. Trademarks Registered. All rights reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. Devices sold by ams AG are covered by the warranty and patent indemnification provisions appearing in its General Terms of Trade. ams AG makes no warranty, express, statutory, implied, or by description regarding the information set forth herein. ams AG reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with ams AG for current information. This product is intended for use in commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or life-sustaining equipment are specifically not recommended without additional processing by ams AG for each application. This product is provided by ams AG “AS IS” and any express or implied warranties, including, but not limited to the implied warranties of merchantability and fitness for a particular purpose are disclaimed. ams AG shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. No obligation or liability to recipient or any third party shall arise or flow out of ams AG rendering of technical or other services. 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Headquarters Please visit our website at www.ams.com ams AG Buy our products or get free samples online at www.ams.com/Products Tobelbader Strasse 30 Technical Support is available at www.ams.com/Technical-Support 8141 Premstaetten Provide feedback about this document at www.ams.com/Document-Feedback Austria, Europe For sales offices, distributors and representatives go to www.ams.com/Contact Tel: +43 (0) 3136 500 0 For further information and requests, e-mail us at ams_sales@ams.com Datasheet • PUBLIC DS000563 • v4-00 • 2021-Oct-18 34 │ 34