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BK7252 Data Sheet v 1.0 BK7252 Data sheet Wi-Fi Audio/Video SoC Beken Corporation Building 41, 1387 Zhangdong Road, Shanghai, China Tel: 86-21-51086811 Fax: 86-21-60871089 www.bekencorp.com © 2018 Beken Corporation Proprietary and Confidential Page 1 of 25

Wi-Fi Audio/Video SoC v 1.0 Contents 1. Introduction......................................................................................................................... 5 2. Features ................................................................................................................................ 6 3. Pin Description ................................................................................................................... 7 4. Wi-Fi and Bluetooth ........................................................................................................ 11 5. Clock .................................................................................................................................... 11 6. Reset .................................................................................................................................... 13 7. Power management ........................................................................................................ 13 8. Peripheral ........................................................................................................................... 14 8.1. UART ........................................................................................................................... 14 8.2. 8.3. 8.4. SPI ................................................................................................................................ 14 SDIO ............................................................................................................................ 14 I2C ............................................................................................................................... 15 8.5. USB .............................................................................................................................. 15 8.6. General purpose ADC ............................................................................................ 15 8.7. 8.8. PWM ........................................................................................................................... 15 Timer ........................................................................................................................... 15 8.9. GPIO ............................................................................................................................ 16 8.10. FLASH Download .................................................................................................... 19 8.11. CMOS Sensor Interface and MJPEG Encoder .................................................. 20 8.12. IrDA interface ........................................................................................................... 20 8.13. I2S interface .............................................................................................................. 20 8.14. Audio Peripheral ...................................................................................................... 20 8.15. QSPI Interface .......................................................................................................... 21 8.16. Security ...................................................................................................................... 21 8.17. Temperature Sensor ............................................................................................... 22 © 2017 Beken Corporation Proprietary and Confidential Page 2 of 25

BK7252 Data Sheet v 1.0 9. Characteristics ................................................................................................................... 22 9.1. Absolute maximum ratings .................................................................................. 22 9.2. 9.3. 9.4. ESD Ratings ............................................................................................................... 22 Recommended operating conditions ................................................................ 22 Current Consumption ............................................................................................ 23 9.5. WLAN Receiver Characteristics ........................................................................... 23 9.6. WLAN Transmitter Characteristics...................................................................... 23 9.7. Audio Characteristics ............................................................................................. 24 10. Package .............................................................................................................................. 25 11. Order Information ........................................................................................................... 25 © 2018 Beken Corporation Proprietary and Confidential Page 3 of 25

BK7252 Data Sheet v 1.0 1. Introduction BK7252 is a 2.4 GHz 802.11n and BLE 4.2 comb chip with audio peripheral and image sensor interface. It integrates hardware and software component to finish a complete 802.11b/g/n audio and video application, which supports AP and STA role simultaneously, and integrates Bluetooth low energy transceiver and version 5.0 complaint protocol stack. The high speed 32-bit MCU and large embedded RAM make it able to support multiple cloud links external audio CODEC. BK7252 has 8-bit DVP to get image data from CMOS sensor, which can be encoded by internal VGA grade motion JPEG codec. The integrated QSPI interface supports FLASH and RAM extension at the same time. BK7252 provides transmit active and receive active indicators through two independent ports, to support external PA and external LNA. and also suitable for audio and image application。 BK7252 has flexible peripheral such as PWM, I2S, I2C, UART, SPI, SDIO, USB and IrDA. Up to six channel 32-bit PWM outputs make it suitable for precise LED control. BK7252 has two channel high performance audio DAC and one channel audio ADC together with line in interface. BK7252 has I2S interface, which can work as either master or slave. The sample rate could be from 8 kHz to 48 kHz, and MCLK could be provided to BK7252 has 32 bytes eFUSE for unique ID, code encryption and debug interface disable. The true random number generator and hardware AES/RSA/SHA support fast and security communication. BK7252 could work with either 4.2 V battery or 5 V USB power supply. There is a deep sleep mode with a few micro-amp current, and could be wake up by either GPIO activation or 32-bit RTC time. © 2018 Beken Corporation Proprietary and Confidential Page 5 of 25

Wi-Fi Audio/Video SoC v 1.0 2. Features  One channel audio ADC and two  802.11 b/g/n 1x1 compliant  Up to 15 dBm output power at 54 channel audio DAC  Line in input Mbps mode  Multi-channel ADC with high  Wide-band and narrow-band interference detection and speed 10-bits or low speed 16-bit with internal decimation filter alleviation  CMOS sensor 8-bit DVP  20/40 MHz bandwidth and STBC  VGA Motion JPEG hardware encoder and dedicate DMA  32 bytes eFUSE and true random number generator  Hardware AES/RSA/SHA  26 MHz and 32 KHz clock signal output  Working mode STA, AP, Direct  AP and STA role simultaneously  Bluetooth low energy 4.2  Classic Bluetooth co-existence   32-bit MCU up to 180 MHz 512 KB internal data RAM  QSPI for RAM and FLASH extension  Multiplexing program download and JTAG interface   Full speed USB host and device 50 MHz SDIO interface and SPI  Dual I2C interface  Dual high speed UART with flow control capability  Six 32-bit timer and one always on timer  Six 32-bit PWM with either high speed clock or low power clock © 2017 Beken Corporation Proprietary and Confidential Page 6 of 25 XTALMCUDPLLFLASH802.11n/BLE PHY/MAC6 PWMsSPISDIORAM2 UARTLDOsPTA2 I2CsADCDCOAlways on Domain32 kHz, Retention Regs, RTC, GPIOIrDA6 TimersWatchDogMicrophone ADCStereo Earpiece DACLine inPSRAMUSBHardware FFT/FilterI2SAES/SHA/RSAeFuse

BK7252 Data Sheet v 1.0 3. Pin Description BK7252 has a QFN8x8 68pin package. © 2018 Beken Corporation Proprietary and Confidential Page 7 of 25 51504948474645444342414039262728293031323334910111213141516171819202122232425VCCIFVCCPADVCCRXRE12345678BK72528x8 QFN68ANTVDDDIGVBATVSYSVCCPA383736356059585756555453526867666564636261VDDAONVIOVUSBP28/RX_EN/USBDNP25/TX_EN/USBDPXTAL32KP12/UART1_CTS/ADC6P34/PXD2/SD_CLKP35/PXD3/S_CMDP36/PXD4/SD_D0P19/SD_D1/QSPI_IO3P17/SD_D0/SPI_MISO/QSPI_IO1P14/SD_CLK/SPI_SCK/QSPI_FLASH_CLKP16/SD_CMD/SPI_MOSI/QSPI_IO0P15/SD_D3/SPI_CSN/QSPI_FLASH_CSNP18/SD_D2/QSPI_IO2P24/LPO_CLK/PWM4/QSPI_RAM_CLKP26/IRDA/PWM5/QSPI_RAM_CSNP23/ADC3/JTAG_TDO/QSPI_IO0P22/CLK_26M/JTAG_TDI/QSPI_IO1P21/I2C1_SDA/JTAG_TMS/I2S_MCLK/QSPI_IO2P20/I2C1_SCL/JTAG_TCK/QSPI_IO3VDDRAMCENP3/I2S_SYNC/ADC5P4/I2S_DIN/ADC1P2/I2S_CLK/ADC4P6/CLK13M/PWM0P7/WIFI_ACTIVE/PWM1AUDRPAUDRNVCOMAUDLNAUDLPVDDAUDMICLNMICLPMICBIASLINELP10/UART1_RXP11/UART1_TXP1/UART2_RX/I2C2_SDAXOP0/UART2_TX/I2C2_SCLXIVCCPLLP5/I2S_DOUT/ADC2P13/UART1_RTS/ADC7GNDDIGGNDAUDNCP33/PXD1/SPI_MISOP32/PXD0/SPI_MOSIP39/PXD7/SD_D3P38/PXD6/SD_D2P37/PXD5/SD_D1P31/VSYNC/SPI_CSNP30/HSYNC/SPI_SCKP27/CIS_MCLKP29/PCLK

Wi-Fi Audio/Video SoC v 1.0 BK7252 68PIN Description 68PIN Name Pin Type Description 1 2 3 4 5 6 7 8 9 VCCRXFE ANT NC VCCPA VCCPAD VCCIF VSYS VDDDIG VBAT 10 VDDAON 11 12 13 14 15 16 17 18 19 20 21 22 VIO VUSB P28/RX_EN/USBDN P25/TX_EN/USBDP XTAL32K P12/UART1_CTS/ADC6 P13/UART1_RTS/ADC7 P33/PXD1/SPI_MISO P32/PXD0/SPI_MOSI P29/PCLK P27/CIS_MCLK P30/HSYNC/SPI_SCK 23 P31/VSYNC/SPI_CSN 24 P34/PXD2/SD_CLK 25 P35/PXD3/SD_CMD I IO X I I I O O I O O I IO IO I IO IO IO IO IO IO IO IO IO IO RF receiver power supply. Supplied by VSYS 2.4 GHz RF signal port Not connected RF PA power supply. Supplied by VIO RF transmitter power supply. Supplied by VIO IF power supply. Supplied by VSYS System LDO output, ~3.0 V Digital LDO output, ~1.2 V Chip power supply, 3.0~4.2 V Always on LDO output, ~1.2 V IO voltage, ~ 3.3 V Chip power supply, 5V GPIO or RX enable or USB DN GPIO or TX enable or USB DP 32 kHz XTAL GPIO or UART1 CTS or ADC6 GPIO or UART1 RTS or ADC7 GPIO or DVP D1 or SPI MISO GPIO or DVP D0 or SPI MOSI GPIO or DVP PCLK GPIO or DVP MCLK GPIO or DVP HSYNC or SPI Clock GPIO or DVP VSYC or SPI CSN GPIO or DVP D2 or SDIO Clock GPIO or DVP D3 or SDIO © 2017 Beken Corporation Proprietary and Confidential Page 8 of 25

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