OM6650AM — Bluetooth 5.1 + 2.4 GHz Proprietary Dual-Mode SoC

Overview

The OM6650AM is an ultra-low-power dual-mode wireless SoC supporting Bluetooth 5.1 and 2.4 GHz proprietary protocols. Housed in a 4.0 × 4.0 mm QFN32 package, it offers rich resources, excellent RF performance, and minimal power consumption. Ideal for digital car keys, TPMS, PKE key fobs, and more.

Key Features

Bluetooth

• Full BLE 5.1 support

• Data rates: 1 Mbps, 2 Mbps, 500 kbps, 125 kbps (long-range)

• 255-byte data length, 37 adv channels

RF Performance

• RX Sensitivity:
  –95.5 dBm (1 Mbps)
  –93 dBm (2 Mbps)
  –98 dBm (500 kbps)
  –101.5 dBm (125 kbps)

• TX Power: –20 to +9 dBm

MCU & Memory

• ARM Cortex-M4F @ up to 64 MHz

• 64 KB SRAM

• 4 Mb Serial Flash

Clocks

• 32 MHz crystal/RC

• 32.768 kHz crystal/RC

Power Management (PMU)

• Voltage: 1.8–3.6 V

• RX: 6.6 mA peak

• TX: 6.2 mA (0 dBm)

• Sleep:
  –0.5 μA (no 32 kRC)
  –1.6 μA (with 32 kRC)
  –4.0 μA (32 kRC + 64 KB RAM retained)
  –3.0 μA (deep sleep, RAM retained)
  –1.5 μA (ultra-sleep, RAM off)

• Integrated DCDC Buck

Software

• Full BLE 5.1 stack (controller + host)

• Mesh support, HCI, example apps/profiles

• SWD debug

Peripherals

• Up to 17 GPIOs, 8 DMA

• 2× UART (1× ISO7816), 1× I2S, 3× I2C, 2× SPI

• QSPI LCD/AMOLED & Flash controllers

• 3× Timer/PWM, 3× QDEC

• 12-bit GPADC (6 ch, up to 2 Msps), Audio ADC, PDM/I2S

• Watchdog, RTC, DSP instructions

Security

• AES-128 hardware encryption

• Hardware RNG

Package & Environment

• 40 nm low-power process

• 4×4 mm QFN32

• AEC-Q100 Grade 2

• –40°C to +105°C