Chip Overview¶

The CI13322 is a new generation high-performance neural network voice chip developed by Chipintelli, integrating the self-developed Brain Neural Processing Unit (BNPU) V3.5 and CPU core. With a maximum system frequency of 210MHz and built-in 288KByte SRAM, it features an integrated PMU power management unit, RC oscillator, single-channel high-performance low-power Audio Codec, and multiple peripheral control interfaces including UART, I2C, PWM, and GPIO. The CI13322 requires minimal external components such as resistors and capacitors to implement various smart voice product hardware solutions, offering excellent cost performance.

Designed with industrial-grade standards, the CI13322 demonstrates excellent environmental reliability, operating within a temperature range of -40°C to +85°C. It meets MSL3 moisture sensitivity level, complies with the IEC 61000-4-2 4KV contact discharge test standard, and adheres to RoHS and REACH environmental protection standards.

Utilizing Chipintelli’s next-generation BNPU technology, the CI13322 supports neural networks such as DNN, TDNN, RNN, and CNN, along with parallel vector operations, enabling high-performance voice recognition, noise reduction, and strong environmental noise suppression capabilities. The CI13322 solution also supports multiple global languages including Chinese, English, and Japanese, making it widely applicable in various product fields such as home appliances, lighting, toys, wearable devices, industrial, and automotive for voice interaction, control, and other smart voice applications.

Please click ☞CI13322 Datasheet to download the complete chip datasheet.

Table G-1 Chip Information

Model	Flash Capacity	RAM Capacity	Package
CI13322	2MByte	288KByte	QFN32 (4mm × 4mm × 0.75mm)

Application Areas¶

Potential application areas for CI13322:

Smart Home Appliances
Smart Toys
Smart Lighting
Smart Wearables

Figure G-1 CI13322 Application Block Diagram

Chip Key Features¶

Brain Neural Processing Unit (BNPU) V3.5
- Utilizes Chipintelli’s next-generation BNPU hardware technology, supporting neural networks such as DNN, TDNN, RNN, and CNN, along with parallel vector operations, enabling high-performance voice recognition and noise reduction
CPU
- 32-bit high-performance CPU with maximum operating frequency of 210MHz
- 32-bit single-cycle multiplier with DSP extension acceleration
Memory
- 288KB built-in SRAM
- 256-bit eFuse
- 2MB built-in Flash
Audio Interface
- Integrated high-performance, low-power Audio Codec supporting single-channel ADC sampling and single-channel DAC playback
- Supports Automatic Level Control (ALC)
- Supports sampling rates of 8kHz/16kHz/24kHz/32kHz/44.1kHz/48kHz
Power Management Unit (PMU)
- Wide power supply voltage range from 3.6V to 5.5V
- Two built-in high-performance LDO circuits, eliminating the need for external power management ICs, requiring only minimal external passive components
Clock
- Built-in RC oscillator
- Supports external crystal oscillator input
Peripherals and Timers
- 3 UART interfaces supporting up to 3M baud rate
- 1 I2C interface for external device expansion
- 4 PWM interfaces for direct driving of lighting and motor applications
- 2 built-in 32-bit timers
- 1 independent watchdog timer (IWDG)
GPIO
- 19 GPIO pins that can be used as a main control IC
- Each GPIO supports interrupt configuration and pull-up/down settings
- 11 GPIOs support 5V level communication with external 5V pull-up resistors
Software Development Support
- Complete software development kit, application examples, and online firmware development platform available at: https://aiplatform.Chipintelli.com
Firmware Programming and Protection
- Supports UART Firmware Update and protection
ESD Performance
- Enhanced internal ESD design, passing 4KV contact discharge tests
ROHS and REACH Compliance
- Uses environmentally friendly materials, compliant with RoHS and REACH standards
Package and Operating Temperature Range
- Package: QFN32, dimensions 4mm × 4mm × 0.75mm
- Operating temperature range: -40°C to +85°C