Summary

Today, industries such as industrial automation, consumer electronics, and medical devices have stringent requirements for the performance, reliability, and supply chain of USB microcontrollers. The CBM9002A microcontroller, introduced by Corebai Microelectronics, is based on an enhanced 8051 core and supports both high-speed 480Mbps and full-speed 12Mbps modes of the USB2.0 protocol. It features 16K bytes of on-chip SRAM and a variety of communication interfaces, including UART, I2C, and GPIO. This product is characterized by its industrial-grade wide-temperature design, low power consumption, and flexible packaging, capable of achieving data transfer rates up to 50 MB/s. It meets the demand for chip-level solutions that offer 'domestic alternatives + performance enhancement' across various scenarios.

1、Industry pain points

In the industrial and consumer electronics sectors, USB controllers have long faced challenges due to insufficient high-speed transmission performance (actual rates rarely exceed 40MB/s, which hinders data processing efficiency), poor reliability in extreme environments (such as wide temperature ranges and ESD shocks, where imported chips are prone to failure and maintenance costs are high), and supply chain cost pressures (delayed and expensive overseas chip deliveries, leading to a pressing need for domestic alternatives). These issues make it difficult to achieve a balance between performance, stability, and cost-effectiveness, thereby limiting the expansion of application scenarios (such as industrial camera lag, short battery life in medical devices, and the risk of imported chip supplies).

2、Product breakthrough: technical characteristics

Under such challenges, Corebai Microelectronics focused on the technical shortcomings and market demand in the field of USB control, and developed CBM9002A industrial-grade USB microcontroller, which solved the triangle contradiction of "performance-reliability-cost" with systematic solutions, and provided a new choice of domestic chips for multi-scenario applications.

（1）Core and performance: 3 times faster operation, multi-tasking efficient processing

Enhanced 8051 kernel: Supports 48/24/12MHz operating frequency, instruction cycle 4 clock (three times the speed of standard 8051), with two UART (up to 230.4K Baud), three 16-bit timers/counters, and multi-external parallel control functions, such as the ability to simultaneously handle sensor serial communication and USB data transmission tasks.

Extended interrupt system, including vector USB interrupt and PIF/FIFO interrupt, with response delay of less than 10 microseconds to ensure real-time response during high-speed data transmission, such as in the process of industrial camera image acquisition to achieve smooth transmission.

（2）Storage and data processing: 16K SRAM, 50MB/s high speed transmission

On-chip storage: 16K bytes of code/data RAM (user code and data sharing) +0.5K bytes of data RAM, which meets the storage space required by complex algorithms and is especially suitable for caching medical image data.

Full speed breakthrough of USB2.0: integrated intelligent serial interface engine (SIE) and Slave FIFO/PIF architecture, supports 7 endpoints (EP0-EP8), measured transmission rate exceeds 50MB/s (close to the upper limit of USB2.0 bandwidth).

（3）Low power consumption and wide temperature: industrial grade reliability design

Low power mode: In the suspended mode, the power consumption is less than 1mA (suitable for sensor node standby); in normal mode, the current is less than 85mA(3.3V power supply), dynamic power management is supported, which can significantly improve the battery life of portable devices, such as handheld scanner battery life can be increased by 20%.

Wide temperature coverage: commercial grade (0~70℃) is suitable for consumer electronics (such as card readers, MP3 players), industrial grade (-40~105℃) meets the requirements of AGV, vehicle-mounted medical equipment and other extreme environments, through ±2000V ESD test, electromagnetic interference resistance force is increased by 30%.

（4）Rich interfaces: one-stop peripheral connection

Multi-protocol compatibility:

I²C interface: Master mode (400/100kHz), directly connected to temperature and humidity, pressure sensors (such as agricultural greenhouse environment monitoring).

GPIO: up to 40 bidirectional IO (100pin package support) to drive peripherals such as LEDs and relays, reducing external level conversion (such as data acquisition system directly connected to ATA hard disk without the need for a bridge chip).

Programmable Interface (PIF): Supports 4 waveform descriptors, connects ASIC/DSP and other chips to implement complex peripheral control (such as power and speed adjustment of laser engraving equipment).

（5）Packaging and firmware: flexible adaptation and rapid development

Diversified packaging: SSOP56(18x7.6x2.8mm, consumer electronics space adaptation), QFN56(8x8x0.1mm, industrial miniaturization), LQFP100(14x20x1.4mm, multi-external device expansion), to meet the mechanical design requirements of various terminals and achieve diversified adaptation.

Firmware startup: Supports USB download (quick update) or EEPROM loading (offline deployment), significantly reducing the development threshold. For example, medical device manufacturers can obtain the firmware framework through the World Strong Innovation platform and save 30% of the code writing effort.

3、Application scenarios, release the value of technology

（1）Industrial automation: double improvement of accuracy and efficiency

Machine vision: CBM9002A-56ILG (industrial grade QFN package) is used in industrial cameras. With 50MB/s high-speed transmission capability and wide temperature design, it achieves defect detection accuracy of 0.01mm.

Laser processing: the laser parameters are controlled through PIF interface, with 0.1mm line width accuracy, and supports-40℃~105℃ working, suitable for outdoor engraving scenes.

（2）Portability and performance

Audio and video equipment: The portable sound card uses CBM9002A-56SCG (commercial-grade SSOP packaging), 48kHz audio stream real-time transmission, low power design to achieve 12 hours of battery life (up 15%), to meet the needs of outdoor live broadcasting.

Storage and interface: The card reader / IDE hard disk adapter is transmitted through USB at high speed, and the QFN package (8x8mm) reduces the volume of the device by 30% (such as portable hard disk box scheme).

（3）Sensors and data acquisition: stability and low power consumption

Environmental monitoring: The temperature and humidity sensor node (battery powered) is connected to CBM9002A through I²C interface. In low power mode, the standby current is less than 1mA, and the battery life is up to 6 months. The data can be uploaded to the cloud in real time.

Medical equipment: The portable B-ultrasound machine adopts industrial packaging technology to ensure the stable transmission of 2D/3D image data, and supports on-board medical application scenarios. Its anti-electromagnetic interference capability ensures that the images are distortion-free.