Ai-BS21-32S is a Bluetooth NearLink module developed by Shenzhen Ai-Thinker Technology Co., Ltd. The module's core processor chip Hi2821 is a highly integrated 2.4GHz SoC BLE&SLE chip that supports BLE5.4/SLE1.0 and integrates RF circuits. RF includes power amplifier PA, low noise amplifier, TX/RX Switch, integrated Power management and other modules support 3 bandwidths of 1M/2M/4M, with a maximum rate of 12Mbit/s.

The chip integrates a high-performance 32bit microprocessor (MCU), hardware security engine and rich peripheral interfaces, including SPI, UART, I2C, PMW, GPIO, USB2.0, NFC Tag, PDM, I2S/PCM, QDEC , KEYSCAN keyboard scanning circuit. Supports 8-channel 13bit resolution ADC, ADC supports docking audio AMIC, built-in SRAM and sealed Flash, and supports running programs on Flash. Supports LiteOS and provides an open and easy-to-use development and debugging environment. It is suitable for PC accessories, IoT and other Internet of Things intelligent terminal fields.

　　 Application Scenario

• Lower energy consumption (only 60% of Bluetooth); low-power application scenarios: battery-powered devices — not implemented
• Faster speed (more than 6 times that of Bluetooth); high-speed application scenarios: high-quality audio headsets, speakers, printers — not implemented
• Lower latency (only 1/30 of Bluetooth); game console, mouse——not implemented
• More stable connection (anti-interference sensitivity is 7dB higher than Bluetooth)————Achieved
• Wider coverage (more than 2 times higher than Bluetooth)————not implemented
• Larger network (more than 10 times compared to Bluetooth). Multi-device networking scenario————not implemented

Selection table

• selection table

• Supports BLE and SLE dual-mode coexistence
• Support BLE5.4
• Support LE 1M, LE 2M, Long Range
• RISC-V high-performance 32bit CPU, maximum frequency supports 64MHz, supports floating point, supports SWD
• Support SRAM 160KB, built-in 512KB Flash
• Supported encryption methods: AES：AES（ Advanced Encryption Standard）、 SM4 and TRNG（True Random Number Generator）
• Supported peripheral interfaces include：SPI、UART、I2C、PMW、GPIO、USB2.0、NFC Tag、PDM、I2S/PCM、QDEC、KEYSCAN, etc.
• Supports BLE whitelist and can be parsed
• Support HID human-machine interface device
• Supports BLE service gap frequency sweep function
• Support BLEAFH frequency modulation
• Support SLE1.0 protocol, wireless frame type 1 (GFSK frame) and wireless frame type 2 (low delay frame), G frame and T frame, broadcast, discovery and access functions, unicast function, multicast function, high Accurate ranging
• Support B/SLE and WLAN, 3/4 lines off-chip coexistence (high real-time performance)
• Support B/SLE and WLAN, coexist through UART (low real-time performance)

Ai-BS21-32S：CN EN

Ai-BS21-32S-Kit：CN EN

Ai-BS21-32S-Kit：Click to view

Ai-BS21-32S：Click to view

1. BS21-Combo-AT command set：Click to view

2. Factory firmware： firmware No.:2530 Click to download

1. NearLink series module burning tool：点击下载

1. NearLink ComboAT Use transparent transmission:[Far Ahead] First experience of NearLink’s exclusive ComboAT, point-to-point connection to achieve transparent transmission, strong anti-interference, ultra-low latency, ultra-long distance communication

Shenzhen Ai-Thinker Technology Co., Ltd
Room 403,408-410, Building C, Huafeng Intelligence Innovation Port, Gushu, Xixiang, Baoan District, Shenzhen China 518126
Business cooperation: overseas@aithinker.com
LinkedIn: https://www.linkedin.com/company/ai-thinker
Official website: http://en.ai-thinker.com
Official Forum: http://bbs.ai-thinker.com