MDBT40 is a BT 4.0 & BT 4.1 stack (Bluetooth low energy or BLE) & ANT Plus module designed based on Nordic nRF51422 SoC solution, which incorporates: GPIO, UART, I2C, SPI, PWM and ADC interfaces for connecting peripherals and sensors.Features1. Transmission Mode of BLE, 2.4Ghz and ANT Plus upon customer preference. 2. Compact size with (L) 18 x (W) 10 x (H) 2.7 mm 3. Low power requirements, ultra-low peak, average and idle mode power consumption. 4. Compatible with a large installed base of mobile phones, tablets and computers. 5. Fully coverage of BLE software stack including: Proximity Profile; Heart Rate Profile; Health Thermometer Profile; Blood Pressure Profile; Running Speed & Cadence Profile; HID Over GATT Profile; Alert Notification Profile; Glucose Profile; Cycling Speed & Cadence Profile 6. BLE & RF transmission switching may help products to fit all operation system 7. BLE & RF transmission switching may help products fit all kinds of hardware.Applications Computer peripherals and I/O devices . Mouse . Keyboard . Multi-touch track pad . Interactive entertainment devices . Remote control . 3D Glasses . Gaming controller . Personal Area Networks . Health/fitness sensor and monitor devices . Medical devices . Key-fobs + wrist watch . Remote control toysMDBT40-ANT-P Series PCB Dimensions, & Pin Indication & Layout Guide PCB SIZE：(L) 18 x (W) 10 mmSpecifications2.4GHZ transceiver: -93dbm sensitivity in Bluetooth low energy modeTX Power -20 to +4dbmRSSI (1db resolution)ARM Cortex – M0 32 bit processor Serial Wire Debug (SWD)S200 and S300 series SoftDevice readyMemory:256kb embedded flash programmed memory6kb RAMSupport for non-concurrent multiprotocol operation: On-air compatibility with nRF24L seriesFlexible Power Management: Supply voltage range 1.8V to 3.6V4.2us wake-up using 16MHz RCOSC0.6uA @ 3V OFF mode1.2uA @ 3V in OFF mode + 1 region RAM retention2.6uA @ 3V ON mode, all blocks IDLE8/9/10 bit ADC- 8 configurable channels31 General Purpose I/O PinsOne 32 bit and two 16 bit timers with counter modeSPI Master / SlaveTwo-wire Master (I2C compatible)UART (CTS/RTS)CPU independent Programmable Peripheral Interconnect (PPI)Quadrature Decoder (QDEC)AES HW encryptionReal Timer Counter (RTC)Main Chip SolutionNordic: NRF51422/QFN48Crystal Frequency 16MHz