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TXW817

The TXW817 is a low-power, high-performance, highly integrated 2.4GHz Wi-Fi + BLE multimode IoT SOC chip. It integrates the IEEE 802.11 b/g/n baseband and RF (Radio Frequency) circuits, including the power amplifier PA (Power Amplifier), low noise amplifier LNA (Low Noise Amplifier), RF balun, antenna switch, and power management module.

The TXW817 Wi-Fi baseband implements OFDM (Orthogonal Frequency Division Multiplexing) technology and is backward compatible with DSSS (Direct Sequence Spread Spectrum) and CCK (Complementary Code Keying) technologies. It supports the IEEE 802.11 b/g/n protocol, with support for 20MHz standard bandwidth and 5MHz/10MHz narrow bandwidth, providing a maximum physical layer rate of 72.2 Mbit/s.

The TXW817 chip integrates a high-performance 32-bit microprocessor with built-in MJPEG (supporting VGA/720P). It provides a rich set of peripheral interfaces, including DVP, LCD, USB 2.0 High-Speed Host/Device (Host supported in some packages), SDMMC Host, SDIO 2.0 Slave, RMII MAC, SPI Master & Device, UART, IIC, IIS, PDM, IR Send/Receive, PWM, GPIO, and general-purpose and audio ADC/DAC.

Features​

Wi-Fi MAC & PHY​

  • Supports IEEE 802.11 b/g/n standards
  • Supports 1T1R mode with data rates up to 72.2Mbps
  • Excellent transmission power and reception sensitivity
  • Built-in PA, LNA, and RF switch
  • Supports STA, AP, AP+STA (relay), STA+STA functions
  • Frame aggregation (TX/RX A-MPDU, RX A-MSDU)
  • Supports RX STBC (Space Time Block Coding)
  • Supports WPA/WPA2/WPA3

BLE​

  • Supports fast Bluetooth network configuration
  • Supports Wi-Fi/BLE PTA coexistence

Video​

  • Supports video data sources via DVP, UVC, SPI camera input
  • One MJPEG encoder, supporting a maximum resolution of 1920*1080 @ 30fps
  • One MJPEG codec, supporting a maximum resolution of 1920*1080 @ 30fps
  • Supports time watermark, colorful photo frame, motion detection, and optical flow algorithm hardware acceleration

Audio​

  • Supports single-ended and differential input high-performance analog microphones with built-in PGA.
  • 1 delta-sigma audio ADC.
  • 1 delta-sigma audio DAC.
  • Supports sampling rates of 8/11.025/12/16/22.05/24/32/44.1/48 kHz.

LCD​

  • Supports RGB interface, MCU8080 interface, and MCU6800 interface for LCD screen display.
  • Supports image scaling, 90/180/270-degree rotation, and horizontal and vertical mirroring.
  • Supports image OSD (On-Screen Display) and alpha blending.
  • Supports CCM (Color Correction Matrix), gamma correction, saturation, and contrast adjustment.

MCU​

  • CK803 CPU, maximum clock speed 240MHz
  • 272KB SRAM
  • Supports various external frequency crystal oscillators and shared crystal oscillator input with the system main control chip
  • Supports RTC
  • Supports 32KHz crystal oscillator
  • 17 timers
  • Supports ULP and LP low power modes with ULP mode current < 28uA @25°C, and multiple IO wake-up support
  • Built-in temperature sensor
  • Built-in LVD detection
  • Built-in watchdog
  • 48-bit unique chip ID (UID)

Peripherals​

  • 20 programmable GPIOs, support edge or level triggered interrupts
  • One 12-bit ADC, can be multiplexed as DAC
  • One 12-bit analog comparator
  • One QSPI, support external SPI FLASH and PSRAM
  • 2 I2S/PCM
  • 1 PDM
  • 1 SDIO2.0 High Speed Device
  • 1 SD Host Controller
  • 1 USB2.0 High Speed Device
  • 3 SPI interfaces Master/Slave (2 configurable as IIC Master/Slave)
  • 3 UART interfaces (1 supports flow control and RS485)
  • 2 infrared transmitters (1 supports IrDA) and multiple receivers
  • 14 PWM outputs (multiplexed with timer), including 4 independent 16-bit PWM, support low power mode PWM

Boot Interfaces​

  • SDIO2.0 Device、USB2.0 Device、SPI Slave、UART
  • SPI FLASH

Data Security​

  • Support for AES 128/192/256 ECB/CBC/CTR encryption and decryption
  • Support for SHA256
  • Support for 5/7/8/16/32-bit CRC checking
  • Support for SPI Flash firmware encryption protection
  • TRNG (True Random Number Generator)

Temperature Range​

  • -40°C to 85°C

Package Options​

ModelPackageSRAMFlashPSRAMUSB2.0DVPMJPEG CodecSDIOLCDLow Power
TXW817-810QFN48272KB1MB✔️✔️✔️✔️✔️
TXW817-824QFN48272KB2MB4MB✔️✔️✔️✔️✔️