After the wearable terminal device invaded the medical electronics field, the wearable medical device was born, and because of its technical advantages and market potential, it has a sudden rise. According to senior analysts at IMS Research, the wearable health care market is likely to exceed $2.9 billion next year, accounting for at least half of wearable product sales. It can be seen that wearable medical devices have ignited the enthusiasm of various manufacturers in this new field.
Household portable medical terminal equipment will maintain strong growth momentum in the world in the next few years. As the number of diabetic patients has risen linearly, and people pay more and more attention to their own health, blood glucose testers have seen a leap in growth. Although blood glucose meters have been on the market for many years, manufacturers are still optimistic about this field. Because of the greater demand for home portable electronics than the large medical equipment in hospitals.
Low power consumption and small size have always been two barriers for wearable products. With the continuous innovation of technology, the low-power characteristics of related core devices such as MCUs and wireless modules have become the competition of major semiconductor manufacturers. The key is. Portable medical electronics are battery-powered, so how to maximize battery life and minimize power consumption is the first consideration for designers. Renesas Electronics has a very rich line of MCUs, and its RX100 series of 32-bit microcontrollers, which are available in volume production, are used in wearable medical devices such as portable blood glucose meters with the industry's lowest power consumption and lowest price. The family's pursuit of extreme low power consumption, with the industry's best performance-to-power ratio - 14.9 CoreMark/mA, consumes only 110uA/MHz at full processor operation and 350nA in standby mode. The RX100 significantly reduces the operating current and standby current of the MCU, reducing overall system power consumption.
The RX100 supports low voltage operation and can operate at 8MHz when operating at 1.8V. Typically, the power consumption based on the ARM Cortex-M3 processor is typically 175uA/MHz and 250nA in standby mode. By comparing the two sets of values, Renesas Electronics' RX100 series 32-bit MCUs have surpassed the ARM Cortex-M3 processor in low-power performance; the standby power consumption of 350nA and the operating power consumption of 70uA/DMIPS have only existed before. 8-bit microcontroller. In addition, the RX100 series of 32-bit MCUs use the 130nm process. At 32 MHz typical, the performance is only 1.56DMIPS/MHz. It supports 3.3V operation, small package, and the flash capacity is up to 128kb, 36-pin to 64-pin.
The RX100 series of 32-bit MCUs deliver high performance and low power at the same time. The fast wake-up from standby mode takes only 4.8 microseconds and is extremely cost effective: - 3.08Cormark/MHz. Because this series of products can share the same development platform with other Renesas RX products, it shortens the product development cycle and is compatible with the existing RX200 series and RX600 series. RX100 series products include RX113, RX111, RX110, and Shiqiang recommends customers to use RX113 in blood glucose meters. The reason is that the RX113 not only incorporates an LCD controller, but also has analog functions for battery-powered applications (12-bit DAC, 12-bit ADC supports high-speed sampling), while USB supports Host/Function /OTG and BC1.2, enhanced The communication function and the combination of the peripheral functions of the RX113 enable high value-added system design. In addition, the RX113 adds a new capacitive touch button IP with the following four features: high sensitivity - through 10mm acrylic plates, support for 300mm proximity sensors; high noise rejection - more than IEC 61000 4-3/4-6 level3 Good performance; enhanced development tools - development tools for automatic adjustment; support for mutual inductance - enhanced waterproofing, support for array recognition, and increased number of capacitive touch buttons.
Figure: Integrated MCU with LCD, USB, RTC and high precision 12-bit DAC in a small package (LGA 7mmx7mm)
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