The Atmel® SMART SAM W25 is a certified Wi-Fi® module which integrates a 2.4GHz radio, a controller and an authentication chip, making it easy to design high data-rate wireless nodes that have a high level of hardware security.
The SAM W25 is based on Atmel’s low-power WINC1500 2.4GHz IEEE 802.11b/g/n System-on-Chip (SoC), and an ARM® Cortex®-M0+ processor core. The module also includes Atmel’s ATECC108A CryptoAuthentication™ device: this has a cryptography engine which provides extremely secure hardware-based key storage.
The module is ideal for designers who need to implement secure Wi-Fi connectivity, but who have no previous experience with IEEE 802.11 systems, IP stacks or the Wi-Fi radio.
It provides an integrated software solution which includes application and security protocols as well as a TCP/IP stack. The hardware security is also easy to implement, so expertise in cryptography and authentication technology is not required.
The Wi-Fi SoC and controller are suitable for battery-powered applications: they have an operating voltage range of 2.7V to 3.6V, and draw just 4μA in Deep Sleep mode. The Wi-Fi SoC can turn the radio on and off instantly to enable the use of power-saving modes. In fact, the low-power operation of the SAM W25 module means that Wi-Fi can now be successfully used in products requiring years of battery life.
The ATECC108A chip uses key sizes of 256- or 283-bits, appropriate for modern security environments, while avoiding the long computation delays typical of software solutions. Providing for high-quality random number generation, the ATECC108A ensures that replay attacks, which re-transmit a previously successful transaction, always fail.
- Wi-Fi data rate up to 72Mbits/s
- Integrated power amplifier and Transmit/Receive switch
- WEP and WPA security support
- 4Mbit Flash memory
- SPI, UART and I2C interfaces
- FCC, CE and TELEC certifications
- Internet of Things
- Secure, low-power Wi-Fi connectivity