Overview
The BK3436T is a highly integrated AEC-Q100 compliant Bluetooth 5.2 (BR/LE) and 2.4 GHz proprietary system-on-chip (SoC) targeting at automotive applications. It integrates a high-performance Bluetooth 5.2/2.4 GHz RF transceiver, a featurerich baseband processor, a memory controller, multiple analog and digital peripherals, as well as Bluetooth and 2.4 GHz proprietary protocol stacks.
Using advanced design techniques and ultra-low-power process technology, the BK3436T delivers high integration and minimal power consumption for automotive applications. Furthermore, the BK3436T is AEC-Q100 qualified over the Grade 2 temperature range (-40 to 105 °C), providing reliable performance across harsh environment such as on board units of electronic toll collection.
Features
Bluetooth + 2.4 GHz Proprietary
• Bluetooth 5.2 and 2.4 GHz proprietary
• Supports Basic Rate (BR), Low Energy (LE) 1 Mbps, 2 Mbps and long range (125 kbps and 500 kbps)
• Supports 2.4 GHz proprietary 1 Mbps, 2 Mbps and 250 kbps
• TX power up to +10 dBm
• RX sensitivity -95 dBm
• Bluetooth direction finding: Angle of Arrival (AoA) and Angle of Departure (AoD)
• Supports an antenna array with up to 16 antennas for precise positioning
Core and Memory
• 32-bit RISC MCU at up to 64 MHz
• Embedded 512 KB Flash with ECC (Error Correction Code) and read out protection
• 64 KB RAM
• 8 KB Cache
• UART/JTAG for debug and download
Security
• AES-128 (CCM)
• True random number generator (TRNG)
• 9-byte unique identification number (e-Fuse)
• LE Secure Connections
Clock Management
• External oscillators: 16 MHz crystal oscillator (X16M), 32.768 kHz crystal oscillator (X32K)
• Internal oscillator: 32 kHz ring oscillator (ROSC)
• 64 MHz PLL
Power Management
• 1.8 to 3.6 V VCCBAT supply
• 0.9 to 1.5 V VBAT1V supply
• On-chip power-on reset (POR) and brown-out detector (BOD)
• Embedded DC-DC converter (boost mode and buck mode) and LDO regulators
• Low power consumption:
- Active mode RX, buck mode: 5.5 mA
- Active mode TX 0 dBm, buck mode: 6.1 mA
- Deep sleep, buck mode: 1.2 μA
- Low voltage standby, buck mode: 3.2 μA
- Normal standby, buck mode: 8.0 μA
Peripherals
• 32 GPIOs
• 3x SPI
• 3x UART: 1 with flash download support, 2 with 7816 protocol support
• 1x I2C
• 1x CAN2.0B/CAN FD
• 1x general-purpose DMA controller (GDMA) with 6 channels
• 6x 32-bit PWM
• 1x audio ADC
• 12-bit SAR ADC, up to 5 channels
• 6x general-purpose 32-bit timer/counter
• 2x watchdog timer
• 1x real-time counter (RTC)
• 1x IrDA interface
• 1x temperature sensor
Packaging
• QFN48 package, 6 x 6 mm
• Operating temperature range: -40 to +105 °C
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