CC2545RTCR [Texas Instruments]

The CC2545 combines the excellent performance of a leading RF transceiver with a single-cycle 8051 compliant CPU, 32-KB in-system programmable flash memory, up to 1-KB RAM, 31 General-Purpose I/O pins and many other powerful features. The CC2545 has efficient power modes with RAM and register retention below 1 μA, making it highly suited for low-duty-cycle systems where ultralow power consumption is required. Short transition times between operating modes further ensure low energy consumption. It is compatible with CC2541/CC2543/CC2544 and comes in a 7-mm × 7-mm QFN 48-pin package with SPI/UART/I2C interfaces.