Zigbee SoC with 64 kB Flash — stack fit and memory headroom
That memory footprint is sized for the full Zigbee PRO stack plus an application image — enough for a sensor endpoint or a router node, but tight if you plan over-the-air firmware updates alongside a large application. The 8 kB RAM handles the stack's frame buffers and a modest data payload; designs needing larger application state or multiple concurrent connections should budget headroom carefully.
Radio link budget: -97 dBm sensitivity and 4.5 dBm output
Receiver sensitivity of -97 dBm gives this part a solid link budget for indoor building automation and industrial sensor networks. With a 4.5 dBm transmit output and a quarter-wave monopole, expect line-of-sight ranges around 100–300 m in open air; walls and concrete floors reduce that by 50–70%. The 250 kbps data rate is the Zigbee standard maximum — adequate for periodic sensor reports and command/response traffic, not for streaming or high-throughput applications.
21 GPIOs and serial interfaces in a 40-pin QFN
The 40-VFQFN exposed-pad package (6x6 mm) brings out 21 GPIOs plus SPI and USART serial interfaces. That I/O count covers a typical sensor node: a few digital inputs, an SPI flash for logging, a UART to a host processor, and a couple of LED/switch lines.
Current draw sits at 20.5 mA to 24.3 mA in receive and 28.7 mA to 33.5 mA in transmit — battery-life calculations should use the higher end of those ranges for worst-case budgeting.
The base product number CC2530F64 covers the 64 kB Flash variant — the 256 kB sibling (CC2530F256) is pin-compatible if the application later needs more program memory.