Bluetooth Low Energy Module Development Board MDBT50-DB-20
Raytac’s MDBT50-256R and MDBT50-P256R are BT5.2 and BT5.1 stack (Bluetooth Low Energy or BLE) modules designed based on Nordic nRF52820 SoC solution, which incorporates GPIO, SPI, UART, I2C, and USB interfaces for connecting peripherals and sensors.

Specifications
- ARM Cortex –M4 32-bit processor with 64 MHz
- Memory: 256KB flash / 32KB RAM
- HW accelerated security
- 128-bit AES / ECB / CCM / AAR co-processor (on-the-fly packet encryption)
- Advanced on-chip interfaces
- USB 2.0 full-speed (12 Mbps) controller
- 8MHz SPI
- Programmable peripheral interconnect (PPI)
- 18 general-purpose I/O pins
- EasyDMA automated data transfer between memory and peripherals
- 4 X 32-bit timers with counter mode
- Up to 2 x SPI masters / 2 x SPI slaves with EasyDMA
- Up to 2 x I2C compatible 2-wire master/slave
- 1 x UART(CTS/RTS) with EasyDMA
- Quadrature decoder (QDEC)
- 2 x real-time counters (RTC)
- Flexible power management
- Supply voltage range 1.7V to 5.5V
- On-chip DC/DC and LDO regulators with automated low-current modes
- Automated peripheral power management
- Fast wake-up using 64MHz internal oscillator
- 0.3uA at 3V in System OFF mode, no RAM retention
- 1.2uA at 3V in System ON mode, no RAM retention, wake on RTC
- Nordic SoftDevice ready with support for concurrent multi-protocol
- Operating temperature from -40 to 105 °C
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