Loudspeakers are highly nonlinear and time-variant systems. Signal distortion, heating, aging, climate and other external influences limit the maximum level and the quality of the reproduced sound. This video shows how Nuvoton smart amplifier can greatly improve the speaker performance and the sound quality by offering mechanical & thermal protection, automatic system alignment, active compensation of transducer nonlinearities, and active stabilization of the voice coil rest position based on the Klippel Controlled Sound (KCS) technology. #en

Loudspeakers are highly nonlinear and time-variant systems. Signal distortion, heating, aging, climate and other external influences limit the maximum level and the quality of the reproduced sound. This video shows how Nuvoton smart amplifier can greatly improve the speaker performance and the sound quality by offering mechanical & thermal protection, automatic system alignment, active compensation of transducer nonlinearities, and active stabilization of the voice coil rest position based on the Klippel Controlled Sound (KCS) technology.

The NAU82011YG is a highly efficient, filter-free, mono Class-D audio amplifier with variable gain, which is capable of driving a 4Ω load with up to 2.9W output power. This device provides chip enable pin with extremely low standby current and fast start-up time of 4ms. The NAU82011YG is ideal for battery driven portable applications. NAU82011YG features 91% efficiency, low quiescent current (i.e. 1.25mA at 3.6V) and superior EMI performance. The audio input of this device can be configured as either single-ended or differential input mode. Target Applications: • Portable Audio Device/Speaker • Portable Navigation Device • Tablet PC Key Features: • Audio Input - Differential / Single-end input - DC PSRR Typ.@95dB - CMRR Typ.@63dB • Audio Output - Powerful Mono Class-D Amplifier - 2.9W (4Ω @ 5V, 10% THD+N) - 2.3W (4Ω @ 5V, 1% THD+N) - Low Output Noise: 20 μVRMS • Advance Feature - Low Current Shutdown Mode - Click-and Pop Suppression - Integrated Image Reject Filter - Integrated feedback resistor of 300 kΩ • Operating Characteristics - voltage range: 2.5 V to 5.5 V - Temperature range: -40°C to 85°C - Low Quiescent Current: 1.2mA@3.6V, 1.7mA@5V • Package - WLCPS-9

本短片介紹了可符合 AMI 2.0 國際標準的智慧電錶設計。該設計即將在一大型電力公司所服務的供電區域進行大規模部署。同時也透過手機APP演示了遠程線上自動讀錶的功能。 - 更多產品資訊，請至新唐科技網站 https://bit.ly/3hVdcmC 購買管道：https://direct.nuvoton.com/tw/ 聯絡我們： SalesSupport@nuvoton.com

This short video clip introduces a real smart meter design in starting volume deployment in South Korea. A real meter machine and mobile phone APP show the auto meter reading online. #Application #Learning #Basic #en - For more information, please visit Nuvoton Technology Website: https://bit.ly/3hVdcmC buy now: https://direct.nuvoton.com contact us: SalesSupport@nuvoton.com

Secure Smart Metering Communication Reference Design Hi everybody, today we are going to introduce a reference design of Smart-Metering communication card based on NuMicro M2351 Series microcontroller. You can find useful security features based on the Arm Cortex-M23 CPU core with Nuvoton’s in-house technology integration. The auto-metering is an infrastructure for automatic, remotely, wire or wireless meter data reading. It’s highly possible to be intervened if there is no security mechanism. That is a very typical IoT security issue in the IoT era. In many countries, there are a lot of Auto-Metering Infrastructure (AMI) projects being undertaken by main electricity power companies worldwide. Most projects start from upgrading the communication modem cards as the first step rather than retiring the meters. The modem card can play as a gateway to monitor the incorrect device operation and data transmission security. Issues of modem card security are covering: First, a limited performance due to crypto computation efficiency Second, speed limitation due to interface choice The third, cost burden due to extra hardware modules for different communication protocols Nuvoton’s reference design of Secure Smart Meter Communication is an end-to-end security solution for AMI. With the collaboration with SPI-Korea, the solution incorporates a lot of advantages such as TrustZone security for firmware, a range of interfaces for device communication, secure over-the-air firmware update, and remote management. With the complete hardware specification of M2351, a security software company, SPI-Korea, can easily implement their secure AMI solution for modem card which connects meters and cloud servers. M2351 also contributes the crypto acceleration during the cryptographic computing in order to save CPU time for different communication protocol modules by its powerful hardware functionalities during message transmission outside of a microcontroller unit. SPI-Korea has developed a range of Armv8-M TrustZone based technologies. Her expertise covers Boot Manager, Key Manager, and Device Manager, which is very useful for microcontroller security and certainly shows the stability of a microcontroller device. Also, they are certified by Korea Electricity Company. We hope this successful experience can be further adopted in other areas worldwide because it’s a secure, accurate and environmentally safe solution for AMI. This slide is a picture for SPI-Korea AMI modem card design. NuMicro Family microcontrollers can be utilized for designs of auto-metering infrastructure devices. We start from AMI modem card and we are confident to support meters of any next-generation of AMI. We now integrate M23-based microcontroller with M4-based or Arm9-based microcontroller as a proposal for next-generation modem card of Korea AMI and we hope to provide high-performing cost-effective solution for all AMI devices in the future. - For more information, please visit Nuvoton Technology Website: https://bit.ly/3hVdcmC contact us: SalesSupport@nuvoton.com

．Why FIDO Authentication ．Security Device for Personal Identity ．USB Dongles Usage ．M2351 USB FIDO Key SDK ．Support Capacitive Fingerprint Sensors ．M2351 USB FIDO Key with TrustZone ．Values Brought by M2351 ．Collaborative Software Development ．An Open Platform with Content Protection ．Leading Market Position for Software Protection For more information, please visit Nuvoton Technology Website: https://bit.ly/3hVdcmC #Product #Learning #Basic #en 0:00 簡介 0:28 Why FIDO Authentication 1:19 Security Device for Personal Identity 2:01 USB Dongles Usage 2:29 M2351 USB FIDO Key SDK 3:36 M2351 USB FIDO Key with TrustZone 4:07 Values Brought by M2351 4:55 Collaborative Software Development (2) 6:10 An Open Platform with Content Protection