Shanghai Taixi Micro announced mass production of serialized “MCU+” products-high-performance signal chain SoC

Shanghai, China, May 10, 2021-Shanghai Taixi Microelectronics Co., Ltd. (hereinafter referred to as “Taixi Micro”), a leading supplier of high-performance dedicated SoC chips in China, announced that it has officially launched an ultra-highly integrated signal chain in the industry A series of SoC chips-TCAS, this series of chips have the advantages of ultra-low power consumption, high performance, high precision, and high reliability.

Shanghai Taixi Micro announced mass production of serialized “MCU+” products-high-performance signal chain SoC

The TCAS series chips integrate a 32-bit ARM® Cortex®-M0 high-performance core, with a maximum operating frequency of up to 48MHz, and built-in up to 64KB FLASH and 8KB SRAM. It integrates 24bit high-precision Sigma-Delta ADC, 14bit high-speed SAR ADC, ultra-low noise PGA, VDAC, IDAC, TIA, op amp and other analog front-end peripherals with up to 1024 times gain amplification, and integrates multiple UARTs. , SPI, I2C and other digital interface peripherals, support a variety of hardware encryption algorithms. Thai Silicon Micro has also developed an original Tinywork® technology (patent number: CN111427443A) to reduce the overall power consumption of the system, which enables peripherals to work independently and cooperate with each other without the intervention of the core processor in the sleep mode, which can be used in typical applications. The working current of the scene power is reduced by more than 80%, and it supports ultra-low power standby and supports independent backup battery power supply.

As an indispensable part of the Internet of Things, sensors are widely used in Internet of Things terminals. In the traditional scheme based on a general-purpose MCU, data collection and processing of different sensors require multiple sets of circuits and multiple chips to achieve, and the higher the performance requirements, the higher the complexity and cost of the peripheral circuits. The TCAS series signal chain SoC chip released by Thai Silicon Microelectronics can meet the above various application requirements with a single chip, and only need software configuration to realize signal conditioning, A/D conversion, data acquisition and processing of various sensors, and peripheral circuits Simple and extremely low noise figure. It can greatly simplify the circuit, reduce the cost, and reduce the number of components.

Haifeng Xiong, founder of Taixi Micro, introduced: “The basic element of MCU product positioning is high reliability. For the TCAS series, the process from chip development to testing, the realization of a single analog or digital IP and IO Ring, is based on the entire chip. The layout of the floor plan and the selection of packaging materials put reliability in the first place. Compared with the 2KV ESD electrostatic test indicators of conventional industrial-grade chips, the measured data of TCAS can easily pass 6KV, and all Passes such as HTOL and Latch up.”

In addition, Thai Silicon Micro not only provides basic data manuals for TCAS series chips, but also prepares mature and stable software development kits, a large number of application notes, low-cost development evaluation boards, reference designs for typical applications, debugging tools, and training materials. To help developers get started quickly.

The following is a list of typical interface circuits and application introductions for some sensor applications:

1. Bridge sensor: The bridge sensor application block diagram shows a high-precision bridge sensor measurement system based on low-noise PGA, 24bit Σ-△ADC, etc. TCAS has built-in two-stage low-noise PGA with adjustable gain, as well as low-root-mean-square (RMS) noise 24bit Σ-△ADC and temperature compensation circuit, which can directly measure small signals from bridge sensors.

Shanghai Taixi Micro announced mass production of serialized “MCU+” products-high-performance signal chain SoC

2. Thermocouple sensor: The thermocouple sensor application block diagram shows a thermocouple measurement system based on 24bit Σ-△ADC. TCAS has built-in PGA, 24bit Σ-△ADC, reference voltage source VDAC and excitation current IDAC, etc. The integrated bias voltage generator inside the chip biases the thermocouple signal to ensure that the input signal meets the requirements of the input voltage limit. The 1mA excitation current is provided on-chip to supply power for the thermistor and sampling resistor. The reference voltage is generated by the external sampling resistor.

Shanghai Taixi Micro announced mass production of serialized “MCU+” products-high-performance signal chain SoC

3. Electrochemical gas sensor: The application block diagram of electrochemical gas sensor is a current type electrochemical gas sensor system based on 24bit Σ-△ADC or 14bit SAR ADC. TCAS has built-in operational amplifier OPA, transimpedance amplifier TIA, 24bit Σ-△ADC or 14bit SAR ADC, VDAC, etc. The sensor reference electrode (RE) provides feedback to the OPA, thereby changing the voltage on the counter electrode (CE) to maintain the constant potential of the WE pin. The internal TIA converts the current signal of the sensor into a voltage signal and provides it to the ADC. The internal VDAC provides a bias voltage for the TIA so that the signal is within the voltage range supported by the ADC in order to provide sufficient margin for different types of sensors.

Shanghai Taixi Micro announced mass production of serialized “MCU+” products-high-performance signal chain SoC

4. Three-wire RTD sensor: The application block diagram of the three-wire RTD sensor is a proportional three-wire RTD (Resistance Temperature Detector) sensor measurement system with external reference based on 24bit Σ-△ADC. This solution largely eliminates the influence of the sensor lead on the measurement result, and can perform high-precision measurement.

The mass production of the SoC chip of Thai Silicon Micro’s signal chain marks a solid step taken by Thai Silicon Micro on the “MCU+” strategic route. In the future, more series of “MCU+” chips will be launched in the technical directions of power management, battery management, radio frequency, touch control, etc., covering various application fields such as consumption, industrial control and automobiles. This new innovation model represents the exploration of domestic MCUs in terms of technological innovation, product innovation, and business model innovation. Explore product innovation through in-depth analysis of application scenarios and requirements; define products together with industry benchmark downstream manufacturers to open up new business models and cooperation models. While solving the pain points of the industry, it also locked the orders of major customers. This has also injected a new growth force into the development of domestic MCUs.

Xiong Haifeng said, “The new energy revolution has brought new development opportunities to China’s automobile industry, and the Internet of Things revolution in the Electronic information industry will also bring opportunities for domestically-made MCUs to overtake on corners. The real overtaking on corners is a hot pursuit. Instead of following, learning from, but not copying, Taixi Micro is unswervingly following the path of originality and innovation. All core technologies are developed independently from scratch and protected by patents, fully respecting and attaching importance to intellectual property rights. Realize the independence of domestic MCUs Controllability and industrial revitalization are still some distance away, and collective wisdom and efforts of the entire industry chain are needed. However, China has the most complete industrial ecology in the world and the largest local market. It will seize brand-new opportunities like’MCU+’, upstream and downstream industries. Linkage, take the road of high-quality development through innovation, and the ecological rise of domestic MCUs can be expected!”

The Links:   SKIIP83AC12IT1 LTM084P363

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