Automotive Bluetooth SoC with integrated MCU
The CC2541F256TRHATQ1 is a Texas Instruments single-chip Bluetooth v4.0 solution combining a 2.4GHz transceiver with an integrated MCU core. The part integrates 256kB Flash and 8kB RAM — enough to hold the Bluetooth stack plus a modest application layer, though firmware engineers should budget the stack footprint early. The 23 GPIO lines support I²C, SPI, and USART serial interfaces for external sensors or displays.
Receiver sensitivity and output power
The receiver sensitivity is rated at -94dBm — typical for Bluetooth 4.0 single-chip parts — which gives a usable link budget for short-range automotive links inside a metal chassis. The maximum output power is 0dBm, and the data rate reaches 2Mbps in Bluetooth 4.0 mode. Current consumption during receive is 18.3mA to 20.8mA, and during transmit 17.2mA to 18.6mA — both typical for this class of SoC. The supply voltage range is 2V to 3.6V, compatible with common 3.3V and 3.0V automotive rails.
Mounting is surface-mount.