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Chip Overview

CI2324X is a new generation of high-performance neural network voice processing chip developed by Chipintelli, integrating the self-developed Brain Neural Processing Unit (BNPU) V3.5 and CPU core. With a system frequency of up to 210MHz, it features 288KByte of built-in SRAM, integrated PMU power management unit, RC oscillator, single-channel high-performance low-power Audio Codec, multiple UART, I2C, PWM, GPIO and other peripheral control interfaces, as well as high-performance low-power Bluetooth BLE. The CI2324X chip requires minimal external components such as resistors and capacitors to implement various intelligent voice product hardware solutions, offering excellent cost-performance ratio.

CI2324X adopts industrial-grade design standards with excellent environmental reliability. Its operating temperature range is -40°C to +85°C, compliant with MSL3 moisture sensitivity level, meets IEC 61000-4-2 4KV contact discharge test standard, and complies with RoHS and REACH environmental protection standards.

CI2324X utilizes Chipintelli’s new generation BNPU technology, supporting neural networks such as DNN/TDNN/RNN/CNN and parallel vector operations, enabling high-performance voice recognition, noise reduction, and strong environmental noise suppression capabilities. The CI23242 also supports Bluetooth BLE5.4 transceiver, allowing remote device control via mobile mini-programs. The CI2324X solution supports multiple global languages including Chinese, English, and Japanese, and can be widely used in home appliances, lighting, toys, wearable devices, industrial, automotive and other product fields to achieve voice interaction, control, and various intelligent voice solutions.

Click ☞CI23242 Datasheet to download the complete chip datasheet.

Table G-1 Chip Information

Model Flash RAM Package
CI23242 2MByte 288KByte SSOP24(8.6mm x 6.0mm x 1.75mm)

CI2324X can be applied in the following product areas:

  • Smart Home Appliances
  • Smart Toys
  • Smart Lighting
  • Smart Wearables

CI23242 Application Block Diagram

Figure G-1 CI2324X Application Block Diagram

Chip Features:

  • Brain Neural Processing Unit (BNPU) V3.5
    • Utilizes Chipintelli’s new generation BNPU technology, supporting neural networks such as DNN/TDNN/RNN/CNN and parallel vector operations, enabling high-performance voice recognition and noise reduction
  • CPU
    • 32-bit high-performance CPU with maximum operating frequency of 210MHz
  • Memory
    • 288KB built-in SRAM
    • 256-bit eFuse
    • 1MB/2MB built-in Flash
  • Wireless Features
    • Bluetooth 5.4 support
    • +5 dBm maximum TX power
    • -98 dBm RX sensitivity @ BLE 1 Mbps
  • Audio Interface
    • Built-in high-performance low-power Audio Codec module supporting single-channel ADC sampling and single-channel DAC playback
    • Supports Automatic Level Control (ALC)
    • Supports 8kHz/16kHz/24kHz/32kHz/44.1kHz/48kHz sampling rates
  • Power Management Unit (PMU)
    • Wide power supply voltage range: 3.6V to 5.5V
    • Built-in 2-channel high-performance LDO circuits, eliminating the need for external power management ICs
  • Clock
    • Built-in RC oscillator
    • Supports external crystal input
  • Peripherals and Timers
    • 2 UART interfaces supporting up to 3M baud rate
    • 1 I2C interface for external I2C device expansion
    • 4 PWM interfaces for direct driving of lighting and motor applications
    • 2 sets of 32-bit timers
    • 1 independent watchdog timer (IWDG)
  • GPIO
    • 11 GPIO ports supporting master IC applications
    • Each GPIO can be configured with interrupt function and pull-up/down status
    • 5 GPIOs support 5V level communication with external pull-up resistors
  • Software Development Support
  • Firmware Programming and Protection
    • Supports UART upgrade and firmware protection
  • ESD Performance
    • Enhanced internal ESD design, passing 4KV contact discharge test
  • ROHS and REACH Compliance
    • Uses environmentally friendly materials, compliant with RoHS and REACH standards
  • Package and Operating Temperature
    • Package: SSOP24, dimensions 8.6mm(L) x 6.0mm(W) x 1.75mm(H)
    • Operating temperature: -40°C to +85°C