![](/images/flag/s/en.gif)
The STK501 includes connectors, jumpers, and hardware allowing full support for the new features on ATmega103, ATmega64, and ATmega128. The Zero Insertion Force (ZIF) socket allows easy use of TQFP packages. In addition to providing support for new devices, the STK501 also adds support for peripherals previously not supported by the STK500. An additional RS-232 driver and an XRAM interface are among the new features. Devices with dual UART or XRAM interface can thus take advantage of the new res