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Chip Overview

The CI1306 is a next-generation high-performance neural network voice chip developed by Chipintelli. It integrates the company’s self-developed Brain Neural Processing Unit (BNPU) V3 and CPU cores, achieving a system frequency of up to 240MHz with 640KB of built-in SRAM. The chip features an integrated PMU power management unit, RC oscillator, dual-channel high-performance low-power Audio Codec, and multiple peripheral interfaces including UART, IIC, IIS, PWM, GPIO, and PDM. With minimal external components (just a few resistors and capacitors), it enables various intelligent voice product solutions with excellent cost-performance ratio.

Designed to industrial standards, the CI1306 ensures high environmental reliability with an operating temperature range of -40°C to +85°C. It complies with MSL3 moisture sensitivity level, meets IEC 61000-4-2 4KV contact discharge test standards, and adheres to FCC EMC standards, as well as ROHS and REACH environmental protection standards.

Leveraging Chipintelli’s V3 BNPU technology, the CI1306 supports neural networks including DNN, TDNN, RNN, and CNN, along with parallel vector operations. It enables advanced features such as speech recognition, voiceprint recognition, offline natural speech processing, command word self-learning, voice activity detection, and deep learning noise reduction, delivering robust echo cancellation and environmental noise suppression capabilities. Supporting multiple global languages including Chinese, English, and Japanese, the CI1306 is ideal for a wide range of applications such as home appliances, lighting, toys, wearable devices, industrial equipment, and automotive products, enabling voice interaction, control, and various intelligent voice solutions.

Please click ☞CI1306 Chip Datasheet to download the complete chip Datasheet.

Table G-1 Chip Information

Chip model FLASH capacity RAM capacity Package information
CI1306 4MByte 640KByte QFN40(5mmx5mmx0.85mm)

Key Application Fields

  • Smart Home Appliances
  • Smart Toys
  • Intelligent Lighting
  • Wearable Devices
  • Industrial Applications
  • Automotive Systems

CI1306应用框图

Figure G-1 Chip Application Block Diagram

Chip Features

  • Neural network processor BNPU V3

    • It adopts BNPU V3 technology, supports DNN TDNN RNN CNN and other neural networks and parallel vector operations, and can realize voice recognition, voiceprint recognition, end NLP, command word self-learning, voice detection and deep learning noise reduction

  • CPU

    • 32-bit high-performance CPU, with operating frequency up to 240MHz
    • 32 bit single cycle multiplier, supporting DSP expansion acceleration

  • Memory

    • Built in 640KB SRAM
    • Built in 512bit eFuse
    • Built in 4MB Flash

  • Audio interface

    • Built in high-performance low-power Audio Codec module, supporting dual ADC sampling and single DAC playback
    • Support Automatic Level Control (ALC) function
    • Support 8kHz/16kHz/24kHz/32kHz/44.1kHz/48kHz sampling rate
    • Support one IIS audio extension channel
    • Support one way PDM interface, which can interface with single or two digital MEMS microphones

  • Power management unit PMU

    • Built in 3 high-performance LDOs, no additional power supply chip is needed, and only a few resistance capacitance devices are needed in the periphery
    • Support 5V power supply direct input, minimum power supply range support 3.6V input, maximum support 5.5V input

  • Clock

    • Built in RC oscillator, also supports external crystal oscillator; Developers can choose to use built-in RC or external crystal as the clock source of the chip according to different application solutions

  • SAR ADC

  • Four 12bit SAR ADC input channels, sampling frequency up to 1MHz

  • ADC IO can be functionally multiplexed with digital GPIO

  • Peripherals and timers

    • 3-way UART interface, supporting up to 3M baud rate
    • One IIC interface, which can be extended by external IIC devices
    • 6-way PWM interface, lamp control and motor applications can be directly driven
    • Built in 4 groups of 32 bit timers
    • Built in 1 set of independent watchdog (IWDG)
    • Built in 1 set of window watchdog (WWDG)

  • GPIO

    • It supports 26 GPIO ports and can be used as the master IC
    • Except for the four GPIO ports corresponding to the PD, other GPIO ports can be configured with interrupt function. All GPIO ports support up and down configuration
    • Some GPIOs support direct communication of wide voltage 5V level signals without external level conversion, but require external resistance pulled up to 5V

  • Software development support

    • It provides complete software development package, application solution examples and online firmware production of voice development platform. For details, please visit: https://aiplatform.Chipintelli.com

  • Firmware flashing and protection

    • Support UART upgrade and firmware protection

  • EMC and ESD

    • Good EMC design, supporting FCC standards

    • Internal ESD enhanced design can pass 4KV contact discharge test

  • ROHS and REACH

    • Adopt environment-friendly materials and support ROHS and REACH tests

  • Packaging and operating temperature range

    • Packaging form: QFN40, the size is 5mm long, 5mm wide and 0.85mm high

    • Working ambient temperature: - 40 ℃ to 85 ℃