Will this mixed-signal master chip rewrite the competitive landscape of the smart lock market?

Jiwei.com reports that it is extremely popular!

In 2019, the smart lock market shipped 29 million sets, and by 2020, it is expected to reach 41 million sets. Although the epidemic has temporarily held back the market, the entire industry will continue to run wild with the replacement of new technologies.

Security and ease of use are the biggest advantages of smart locks. Based on biometric technologies such as fingerprint recognition, combined with Bluetooth, WiFi and advanced encryption algorithms, smart locks not only liberate users, but also gradually become an important entrance to smart homes.

For developers of smart door panels, the market space is very large, but it is not easy to stand out from the fierce competition. The most critical point is to choose a suitable main control chip.

Four in One

There are now more than 3,000 brands of smart lock manufacturers in China. In addition to manufacturers from the traditional lock industry, giants such as Haier, Midea, Huawei, 360, JD.com, NetEase, and Baidu have also begun to get involved in this field. The most direct consequence of fierce competition is that the cost-effectiveness of smart locks has been greatly improved.

Smart locks are electronic locks that achieve intelligent control through technologies such as passwords, fingerprints, face recognition, and wireless. A typical smart lock is based on an MCU and integrates functional modules such as clock IC (RTC), power management IC, voice circuit, motor driver IC, control panel module, and fingerprint recognition module. This solution has high management and design costs due to the large number of functional chips. Is there a mixed signal processing chip that can integrate multiple functional modules to simplify the application of smart locks?

Xinwangwei KF32L530 is such a mixed signal processor. Recently, the smart door lock solution based on KF32L530 launched by Xinwangwei has received widespread attention.

KF32L530 has a large capacity Flash and integrates rich peripherals such as touch module, RTC module, 12Bit DAC, I2S module, etc. At the same time, Xinwangwei also provides mature and stable fingerprint recognition algorithm. Users do not need to purchase fingerprint modules separately, but only need an external fingerprint sensor. The KF32L530 solution combines the original 4 external ICs into one, which not only greatly saves the overall device cost, but also makes the size of the main control board PCB smaller, leaving more room for door lock product design.

In the original smart lock solution, the fingerprint recognition function requires an independent fingerprint module because of its high requirements for computing power. Because it has a 32-bit high-performance KungFu32 core, the KF32L530 has a maximum operating frequency of 120MHz and a computing power of 120DMIPS, which is equivalent to the Cortex-M4 architecture MCU and can independently complete the fingerprint recognition algorithm.

In other indicators, KF32L530 also performs well: efficient instruction set based on 16-bit/32-bit mixed instructions; 3-stage pipeline; 32×32 single-cycle multiplication, 32÷32 hardware division; support for interrupt priority processing, automatic interrupt stack; 13 32-bit general registers R0~R12. Because of the self-developed architecture, KF32L530 can be more free in frequency setting, which is also the key to its high performance.

KF32L530 is equipped with up to 512KB Flash with ECC check and up to 128KB RAM. Such a large-capacity memory configuration also makes KF32L530 stand out among similar products.

A Jack of All Trades

Battery power is the common power supply method for smart locks. Because it requires a standby mode of one to two years and needs some low-power sensors to cooperate, the overall solution has very high requirements on power consumption.

KF32L530 has a shutdown power consumption as low as 0.2μA, a dynamic power consumption of 60μA/Mhz, and an average power consumption of only 10uA for the entire smart lock solution. Compared with the current conventional solution with a power consumption of 50uA, it has completely achieved a qualitative leap. In terms of low power consumption performance, KF32L530 has completely reached the industry's first-class level.

In terms of touch, KF32L530 integrates high-sensitivity and high-performance Touch Key functions, supports 27 high-sensitivity Touch Key buttons, and Touch can support responses to acrylic panels with a thickness of more than 10mm, and can cope with various types of electromagnetic interference.

In terms of communication interface, KF32L530 has up to 8 serial ports and multiple IIC/SPI/I2S interfaces. Among them, I2S supports 8K~96K linear frequency shift, can manage language Codec IC, and also supports CAN and USB2.0 (Device Full Speed) interfaces.

Today's MCU developers pay the most attention to whether the chip provides rich resources. KF32L530 is also generous in this regard, providing a large number of resource modules. Among them, it includes 1 hardware CRC32 module; 1 AES128 encryption module; 1 independent RTC (perpetual calendar); 1 LCD display module that can drive 8x48/4x44 mode; 2 12-bit ADC modules, supporting up to 20 channels; 2 DAC modules; 4 CMP comparator modules; 2 programmable gain amplifier modules (PGA), etc. These resources can be flexibly called by developers, which is very convenient for development and debugging.

Advantages of KF32L530 based smart door lock solution

High integration and high performance:

lKF32L530MQT master control, self-developed KungFu32 core, maximum main frequency 120Mhz, Flash up to 512KB.

Provide fingerprint algorithm and support 160*160 fingerprint sensor.

Provides touch button algorithm and supports 12-channel touch buttons.

Built-in RTC clock module for accurate timing.

Sleep power consumption: 10uA (12-button polling scan + RTC timing).

Integrates DAC, PAG, CMP, I2S, USART, CAN, USB, LCD and other peripheral resources to enrich the scalability of the solution.

Cost advantage:

Reduce the cost of fingerprint modules, no need for fingerprint algorithm processing MCU.

Reduce touch panel cost, no need for key touch IC.

Eliminate the cost of real-time clock IC.

Large capacity Flash can save audio storage Flash IC.

High reliability and security:

The chip meets 4200V-EFT 8000V-ESD.

Flash provides multiple encryption modes and permission management.

Supports hardware CRC32 and AES128 encryption and decryption.

Ecosystem and Services:

Equipped with embedded freeRTOS real-time operating system, it is convenient for function expansion and task management.

Provide product-level hardware and software technical support services to shorten the design cycle.

KF32L530 belongs to the 32-bit KF32L series (low power and high performance), and the 32-bit architecture includes the KF32LS series (single power supply and low power), KF32F series (high reliability and high performance), and KF32A series (automotive grade). Among them, KF32LS and KF32L focus on AIoT, smart home, instrument control, wearable devices, voice recognition, fingerprint recognition and other applications.

Currently, KF32L530 has integrated multiple functions, and the next step is to integrate wireless connection functions. It is revealed that the next generation of products will be planned to integrate Bluetooth modules. By then, a full-featured SoC will bring greater advantages to the development of smart locks.