DatasheetTEE301 Digital Temperature Sensor

TEE301 Digital Temperature Sensor The TEE301 is the next generation of the T series TEEx01. With a 16-bit unsigned integer value and a different pin assignment compared to TEE501, the TEE301 allows an easy upgrade for your existing application with minimal integration effort. Furthermore the sensor covers a wide application range from -40 to +125 °C. Therefore the TEE301 offers a versatile measuring device for demanding tasks. With a footprint of only 2.5 x 2.5 mm, an accuracy of 0.2 °C and the expansion of up to 4 I2C addresses, it ensures outstanding performance at an excellent price-performance...

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Table 1: List of TEE301 specific acronyms v1.3 / Modification rights reserved | 5

Bottom view Thermal pad internally connected to GND Figure 2: Typical application schematic www.epluse.com v1.3 / Modification rights reserved | 6

Temperature Sensor Operating range Response time Long term drift 1) R esolution is chosen by the corresponding measurement command. 2) The stated “Noise / Repeatability” is 3 times the standard deviation (3σ) of multiple consecutive measurement values at constant environmental conditions. 3) Time for achieving 63 % of a step function, valid at 25°C and 1m/s airflow. The actual response time in application strongly depends on the surrounding of the sensor in the final application (heat conductivity of sensor substrate, dead volume, …). Table 3: Temperature sensor parameters Figure 3: Temperature...

4.1 Absolute Maximum Ratings 1) Without I2C communication and when not measuring. Table 5: General operation v1.3 / Modification rights reserved | 8

Table 9: Measurement resolution v1.3 / Modification rights reserved | 9

The supply pins must be equipped with a bypass ceramic capacitor of at least 100 nF. Sensor Power-up As soon as VDD exceeds the POR voltage VPORP, the device gets initialized. After tPWRU, the initialization procedure is completed. The I2C communication is based on the NXP UM10204 I2C bus specification and user manual1). The TEE301 supports the modes “standard" (100 kHz), “fast mode“(400 kHz) and “fast mode plus” (1 000 kHz). The sensor works as SLAVE and needs to be queried by a MASTER. The sensor's I2C base address is 0x4A (without RW bit). Pins A1...A3 define the I2C base address. The ALERT...

As soon as the falling edge on the reset pin is in the logic “0” blue area (low signal), as shown in the diagram below, the device goes into the reset and remains in this state as along as the voltage on the reset pin remains in the logic “0” area. In particular, during this phase, the device is in the cycle of being powered-up and reset immediately after power-up, thus the current consumption corresponds to the power-up current, approximately 1 mA. During the reset time, the device will not respond to any request on the I2C interface and set all digital outputs into a tristate mode. As soon...

6 Sensor Communication 6.1 Command Overview 6.2 Measured Data Format v1.3 / Modification rights reserved | 12

Measurement Modes There are two different operation modes to communicate with the sensor: 1. Single Shot Measurement Single shot mode G:\Produkte\TEE301\35_Diagrams\TEE301_PWRup Time depends on COMMAND Time depends on COMMAND Time depends on measurement interval Time depends on measurement interval tMEAS tMEAS Figure 7: Periodic measurement Single Shot Measurement READ Measurement READ Measurement Measurement Measurement COMMAND Single Single COMMAND Shot Measurement Shot Measurement IDLE MODE Time depends on measurement interval Time depends on measurement interval IDLE MODE COMMAND COMMAND...

A single-shot measurement is started afterthe command has been received successfullN. The readout of the calculated T value is started by sending the I2C address again in read mode: Figure 8: Start single shot measurement readout In case a command with clock stretching enabled has been issued, the slave holds SCL low until the calculation has been finished: Figure 9i Cleckstrstshin-daring messurement In case a command without clock stretchinghas SeeNissued, the slave does not acknowledge (NACK) a read header as long as the calculation has not been finished: SCL FREE FOR OTHER BUS MEMBERS | ^...

Once issued, measurements and calculations are started automatically with a given measuring interval and resolution. This mode does not support clock stretching. Figure 12: Periodic measurement commands A periodic measurement command with a different measurement interval / resolution can be issued at any time, but the calculated value will be updated according the new settings earliest after a measurement with the new settings has been performed. Readout of calculation results in periodic measurement mode can be performed using the fetch command. This is similar to the readout of measurement...

Figure 15: Soft reset www.epluse.com v1.3 / Modification rights reserved | 16

In order to reset all devices on the bus, the master can use the “General call” mode. This generates a reset (system startup) in all devices on the bus which support this function. The effect is the same as for the “Soft Reset” command. Figure 18: Clear status register www.epluse.com v1.3 / Modification rights reserved | 17

Table 14: CRC checksum calculation v1.3 / Modification rights reserved | 18

6.11 Package / Dimensions The TEE301 sensor is provided as an open-cavity DFN (= Dual Flat No Leads) package. Table 15: Package dimensions 6.12 Tape and Reel Packaging The TEE301 has a Moisture Sensitivity Level (MSL) of 1, according to IPC/JEDEC J-STD-020. It is recommended to further process the TEE301 sensors within 1 year after date of delivery. Reel size 330.2 mm (13"), Leader 520 mm (20.5"), Trailer 1240 mm (48.8"). www.epluse.com v1.3 / Modification rights reserved | 19