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TMP103GYFFR Datasheet(PDF) 11 Page - Texas Instruments |
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TMP103GYFFR Datasheet(HTML) 11 Page - Texas Instruments |
11 / 30 page TMP103 www.ti.com SBOS545B – FEBRUARY 2011 – REVISED JANUARY 2016 7.3 Feature Description The TMP103 is a 1°C resolution digital output temperature sensor offered in a four-ball wafer chip-scale package (WCSP). The TMP103 features a two-wire interface that is compatible with both I2C and SMBus interfaces. The serial interface supports multiple device access (MDA) commands that allow the master to communicate with multiple devices on the bus simultaneously, eliminating the need to send individual commands to each TMP103 device on the bus. Up to eight TMP103 devices can be tied together in parallel and easily read by the host. The TMP103 is an ideal choice for space-constrained and power-sensitive applications with multiple temperature measurement zones to be monitored. 7.4 Device Functional Modes 7.4.1 Shutdown Mode Shutdown mode saves maximum power by shutting down all device circuitry other than the serial interface, reducing current consumption to typically less than 0.5 μA. For details on how to enter shutdown mode, see Shutdown Mode (M1 = 0, M0 = 0) in Programming. 7.4.2 One-Shot Mode The TMP103 features a One-Shot Temperature Measurement mode. When the device is in Shutdown mode, the device can be instructed to complete a one-time temperature measurement before returning to the shutdown state. This feature is useful for reducing power consumption in the TMP103 when continuous temperature monitoring is not required. As a result of the short conversion time, the TMP103 can achieve a higher conversion rate. A single conversion typically takes 26 ms and a read can take place in less than 20 μs. When using One-Shot mode, 30 or more conversions per second are possible. For details on how to enter One-Shot mode, see One-Shot (M1 = 0, M0 = 1) in Programming. 7.4.3 Continuous Conversion Mode In Continuous Conversion mode, the TMP103 performs temperature conversion at a rate determined by the conversion rate bits (CR1 and CR0) set in the configuration register. Because the actual temperature conversion takes only 26 mS, the TMP103 powers down in between conversions and waits for the appropriate delay. For details on how to enter One-Shot mode, see Continuous Conversion Mode (M1 = 1) and Conversion Rate in Programming. 7.5 Programming 7.5.1 Temperature Watchdog Function The TMP103 contains a watchdog function that monitors device temperature and compares the result to the values stored in the temperature limit registers (THIGH and TLOW) to determine if the device temperature is within these set limits. If the temperature of the TMP103 becomes greater than the value in the THIGH register, then the flag-high bit (FH) in the configuration register is set to 1. If the temperature falls below the value in the TLOW register, then the flag-low bit (FL) is set to 1. If both flag bits remain 0, then the temperature is within the temperature window set by the temperature limit registers, as shown in Figure 12. Copyright © 2011–2016, Texas Instruments Incorporated Submit Documentation Feedback 11 Product Folder Links: TMP103 |
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