The EM9301 is a single-mode Bluetooth 4.0 Low Energy (BLE) controller IC designed for ultra-low power applications. It communicates with the host MCU via SPI, integrates the RF front-end and baseband, and provides a complete BLE link layer — ideal for wearables, sensors, and beacons requiring extremely low operating current.
| Standard | Bluetooth 4.0 BLE |
| Host Interface | SPI (up to 8 MHz) |
| TX Power | Up to +4 dBm |
| Sensitivity | -93 dBm |
| Supply Voltage | 2.0V ~ 3.6V |
| Operating Current | < 5 mA |
| Sleep Current | < 1 μA |
| Package | QFN32 |
EM Microelectronics
Switzerland
Ultra-Low Power ICs — Semiconductor brand of the Swatch Group
View all EM Microelectronics products →The EM6819 is an ultra-low power 8-bit RISC microcontroller from EM Microelectronics. Built on CMOS process, it operates down to 0.9V and achieves nA-level sleep current. Features integrated LCD driver, timers, ADC, and rich peripherals — ideal for battery-powered consumer electronics and smart card applications.
EM4305 is a 125kHz low-frequency RFID read/write transponder IC powered by the inductive coil. Supports ASK/FSK/PSK modulation with 512-bit EEPROM — widely used in access control cards, employee ID cards, animal identification, and industrial tracking.