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Schematic

K210_CAM

FUNCTIONAL DESCRIPTION

KENDRYTE K210

The Kendryte K210 is a system-on-chip (SoC) that integrates machine vision. Using TSMC’s ultra-low-power 28-nm advanced process with dual core 64-bit processors for better power efficiency, stability and reliability. The SoC strives for ”zero threshold” development and to be deployable in the user’s products in the shortest possible time, giving the product artificial intelligence

• Machine Vision
• Better low power vision processing speed and accuracy
• KPU high performance Convolutional Neural Network (CNN) hardware accelerator
• Advanced TSMC 28nm process, temperature range -40°C to 125°C
• Firmware encryption support
• Unique programmable IO array maximizes design flexibility
• Low voltage, reduced power consumption compared to other systems with the same processing power
• 3.3V/1.8V dual voltage IO support eliminates need for level shifters

CPU

The chip contains a high-performance, low power RISC-V ISA-based dual core 64-bit CPU with the following features:

• Core Count: Dual-core processor
• Bit Width: 64-bit CPU 400MHz
• Frequency: 400MHz
• ISA extensions: IMAFDC
• FPU: Double Precision
• Platform Interrupts: PLIC
• Local Interrupts: CLINT
• I-Cache: 32KiB x 2
• D-Cache: 32KiB x 2
• On-Chip SRAM: 8MiB

OV7740

• support for output formats: RAW RGB and YUV
• support for image sizes: VGA, QVGA, CIF and any size smaller
• support for black sun cancellation
• support for internal and external frame synchronization
• standard SCCB serial interface
• digital video port (DVP) parallel output interface
• embedded one-time programmable (OTP) memory
• on-chip phase lock loop (PLL)
• embedded 1.5 V regulator for core
• Sophisticated Edge Rate Control Enables Filter less Class D Outputs
• 77dB PSRR at 1kHz
• Low RF Susceptibility Rejects TDMA Noise from GSM Radios
• Extensive Click-and-Pop Reduction Circuitry
• array size: 656 x 488
• power supply: – core: 1.5VDC ± 5% – analog: 3.3V ± 5% – I/O: 1.7 ~ 3.47V
• temperature range: – operating: -30° C to 70°C – stable image: 0° C to 50° C
• output format: – 8-/10-bit raw RGB data – 8-bit YUV
• lens size: 1/5″
• input clock frequency: 6 ~ 27 MHz
• max image transfer rate: VGA (640×480): 60 fps – QVGA (320 x 240): 120 fp
• sensitivity: 6800 mV/(Lux-sec)
• maximum exposure interval: 502 x tROW
• pixel size: 4.2 μm x 4.2 μm
• image area: 2755.2 μm x 2049.6 μm
• package/die dimensions: – CSP3: 4185 μm x 4345 μm – COB: 4200 μm x 4360 μm

MAX98357

• Single-Supply Operation (2.5V to 5.5V).
• 3.2W Output Power into 4Ω at 5V
• 2.4mA Quiescent Current
• 92% Efficiency (RL = 8Ω, POUT = 1W)
• 22.8µVRMS Output Noise (AV = 15dB)
• Low 0.013% THD+N at 1kHz
• No MCLK Required
• Sample Rates of 8kHz to 96kHz
• Supports Left, Right, or (Left/2 + Right/2) Output
• Sophisticated Edge Rate Control Enables Filter less Class D Outputs
• 77dB PSRR at 1kHz
• Low RF Susceptibility Rejects TDMA Noise from GSM Radios
• Extensive Click-and-Pop Reduction Circuitry

AXP192

• Operation Voltage: 2.9V – 6.3V(AMR:-0.3V~15V)
• Configurable Intelligent Power Select system
• Current and voltage limit of adaptive USB or AC adapter input
• The resistance of internal ideal diode lower than 100mΩ

MPU6886

GYROSCOPE FEATURES

• Digital-output X-, Y-, and Z-axis angular rate sensors (gyroscopes) with a user-programmable full-scale range of ±250 dps, ±500 dps, ±1000 dps, and ±2000 dps and integrated 16-bit ADCs
• Digitally-programmable low-pass filter
• Low-power gyroscope operation
• Factory calibrated sensitivity scale factor
• lens size: 1/5″
• Self-test

ACCELEROMETER FEATURES

• Digital-output X-, Y-, and Z-axis accelerometer with a programmable full scale range of ±2g, ±4g, ±8g and ±16g and integrated 16-bit ADCs
• User-programmable interrupts
• Wake-on-motion interrupt for low power operation of applications processor
• Self-test

SPI/I2C dual communication mode

• In the M2StickV circuit design of the I2C single-mode (blue PCB) version, MPU6886 only supports the user to configure its communication mode to I2C, and its pin mapping is SCL-28, SDA-29.

• In the SPI/I2C dual mode (black PCB) version of the M5StickV circuit design, MPU6886 supports the user to configure its communication mode to SPI or I2C, and its pin mapping is SCL-26, SDA-27., when using, you can switch CS Pin level to switch modes (high level 1 is I2C mode, low level 0 is SPI mode)

• The specific pin mapping is shown below: