For everywhere wearable devices and the Internet of Things (IoT) products, what kind of wireless technology is the product really needed? Engineers design time and faced with what some of the challenges? Survey, design engineers faced with three major challenges: First, the design of sensor-based wireless IoT system more difficult. When designing a sensor based wireless systems, engineers need to use a plurality of IC design tools vendors, while wireless specifications require complex firmware development, RF circuit board design is relatively complicated; Second, the sensor-based systems requires the use of the AFE sensors, digital control logic, and the BLE RF MCU, and require additional complex user interface touch screen or IC, these systems based on a plurality of IC BOM cost increases; and third, wireless systems typically run using a coin cell, for optimize system power, the need to achieve optimized low-power systems.
Cypress Semiconductor Corporation (Cypress) low-power single-chip Bluetooth solution, the integration simplifies design are unique. PSoC programmable embedded design platform, the new PSoC 4 BLE Programmable System-on-chip based on Cypress 15-year-old history itself programmable flexibility, combined with the ARM Cortex-M0 processor architecture of the high cost, now combined with low power Bluetooth (BLE) radio frequency to achieve a high degree of integration and ease of use.
Cypress PSoC 4 BLE architecture
Cypress Bluetooth low energy solution with intelligent Bluetooth radio, a high-performance ultra-low-power 32-bit mode ARM Cortex-M0 core, programmable analog blocks, and CapSense capacitive touch sensing function. These technologies combine to provide high value system for smart Bluetooth products, longer battery life, can be customized sensing capabilities, as well as beautiful and intuitive user interface.
PSoC 4 BLE programmable integrated AFE comprises four operational amplifiers (configurable as PGA, comparators, filters, etc.), SAR2 ADC 1 12-bit resolution and a sampling rate 1Msps; programmable digital logic includes four general purpose digital block (UDB), 4 TCPWM3 configurable module, two configurable serial communication module (SCB of); and CapSense touch sensitive interface, its built-in auto-tuning algorithm Cypress SmartSense two-finger gesture may be identified, and is completely require manual tuning (see Figure).
Three-pronged approach simplifies system design
In addition to the high level of integration, Cypress product marketing manager Wang Donggang, said the value of PSoC 4 BLE single-chip solution is to simplify the system design work. This is mainly in three aspects: simplify BLE protocol stack and configuration profiles; via Balun integrated circuit, simplifying the RF design of the circuit board; to achieve a complete system design PSoCCreator, simplifying the overall design process.
In addition to integrating PSoC 4 BLE Bluetooth link layer and the physical layer, but also integrates on-chip programmable Bluetooth RF system (PR oC), and Bluetooth radio filtering the desired bis Balun circuit P, the function of this circuit is a differential radio frequency signal into in contrast to a single-ended signal or a signal matching to the antenna. After a single Balun integrated circuit chip, such Bluetooth radio simpler design, requires only one external capacitor and an inductor can be, and currently on the market outside the mainstream program takes nearly seven or nine devices. Wang Donggang emphasized, the number of external components is reduced not only reduce the cost, PCB area is reduced, but also greatly simplifies system design, to improve production yield. PSoC 4 BLE as a highly integrated single-chip solution that reduces IoT and wearable device design threshold, can be customized for IoT applications, home automation, medical, sports and fitness monitoring, and other intelligent devices can be worn to wear.
Bluetooth SIG has been
Currently, Cypress's highly integrated single-chip, low-power Bluetooth solution has been Bluetooth. Bluetooth SIG (The Bluetooth Special InterestGroup) to grant certificates, which means that the systems and PRoC BLE RF system on-chip programmable PSoC4BLE programmable link layer sheet element used in the embodiment solved, low-power Bluetooth protocol stack and a physical RF layer (RF PHY) by version 4.1 specification. In addition, the solution chip scale package (CSP) and quad flat no-lead (QFN) package also received Bluetooth 4.1.
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Source: Wiku Electronic Market Network
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