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1、TI TMS37157 低频收发器 MCU 接口方案TI 公司的 TMS37157 把低频收发器接口和 SPI 接口与功率管理组合在一起 ,非常适合任何配置,数据采集,传感器遥控制应用.TMS37157 工作电压 2V 到 3.6V,超低的功耗,工作时功耗为150uA,降功耗模式为 60nA.本文介绍 TMS37157 主要特性, 广泛的应用范围,方框图, 功率管理框图, 和直接连接到电池的 MCU 应用电路,以及 MCU 连接到 TMS37157 VBATI 输出的应用电路.The TMS37157 combines a Low Frequency Transponder Interface
2、 with an SPI Interface and Power Management for a connected microcontroller. It is the ideal device for any Configuration, Data Logger-, Sensoror Remote Control Application. The Transponder memory is accessible through SPI and LF and, in the second case, operates without the need for a battery. The
3、use of the Low Frequency Band ensures a communication in a defined direction and harsh environments.The TMS37157 manages the Transponder communication and push button interaction. During sleep state the devices enters a special low power mode with only 60 nA current consumption.The EEPROM memory is
4、accessible over the LF interface without support from the battery or through SPI by amicrocontroller if a battery is connected. The TMS37157 offers a special battery charge mode.The external resonance circuit with a LF coil and a resonance capacitor can be trimmed to the correct resonancefrequency w
5、ith the integrated trimming capability achieving an easy way to eliminate part tolerances.The small RSA 16-pin package together with only a few external components results in a cost efficient design.TMS37157 主要特性 :TMS37157 应用 :AO-Electronics 傲壹电子 官网： 中文网：ALPS ADI IR JRC/NJR KEC OTAX Seoul Semiconductor TI Walsin Technology图 1.TMS37157 方框图图 2.TMS37157 功率管理图 3.TMS37157 和直接连接到电池的 MCU 应用电路图 3.MCU 连接到 TMS37157 VBATI 输出的应用电路
