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Overview

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The BK3515NS is a highly integrated single-chip Bluetooth 5.2 controller which supports Bluetooth LE, BR, and EDR. It integrates a high-performance Bluetooth RF transceiver, a feature-rich baseband processor, a memory controller, multiple analog and digital peripherals, and Bluetooth protocol stacks.

Using advanced design techniques and ultra-low-power process technology, BK3515NS provides dual-mode Bluetooth 5.2 physical layer and link layer service for applications such as smartphones, MP3 players, MP4 players, PMPs, and other portable devices.

Features

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Bluetooth

• Bluetooth 5.2 compliant

• Supports Basic Rate (BR), Enhanced Data Rate (EDR) 2 Mbps and 3 Mbps, and Low Energy (LE) 1 Mbps

• TX power up to +8 dBm

• RX sensitivity -95 dBm

• Fast link setup and fast role switch

Core and Memory

• 32-bit MCU at up to 120 MHz

• 512 KB flash

• 128 KB RAM

• 128 KB ROM

• 64 KB cache

• 32-bit eFuse

• UART for debug and download

Clock Management

• External oscillator: 26 MHz crystal oscillator (X26M)

• Internal oscillator: 32 kHz ring oscillator (ROSC)

• 120 MHz PLL

Power Management

• 2.8 to 4.35 V VCC4BAT supply

• On-chip Power-On Reset (POR) and Brown-Out Detector (BOD)

• Embedded LDO regulators

• Low power consumption:

- Active mode RX: 9.7 mA

- Active mode TX @ 8 dBm: 60 mA

- Deep sleep mode: 6.5 μA

- Shutdown mode: 0.8 μA

Peripherals

• 11 GPIOs

• 1x SPI

• 2x UART: 2 with hardware flow control, 1 with flash download support

• 1x I2C

• 6x 32-bit PWM channel

• 1x I2S

• 12-bit SAR ADC, up to 5 channels

• 6x 32-bit general-purpose timer

• 1x watchdog timer

• 1x real-time counter (RTC)

• 1x IrDA

• 1x temperature sensor

• 1x touch sensor, up to 6 touch sensing I/Os

Packaging

• QFN20 package, 3 x 3 mm

• Operating temperature range: -20 to +85 °C

Applications

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• Smartphone

• MP3 player

• MP4 player

• PMP