AVR offers a complete toolchain to aid in system design. Microchip provides complete high quality, low-cost development solutions including AVR Studio, an assembler, starter kits, and in-circuit-emulators which have all been created to maximize functionality. In-system development reduces time to market by letting the device be its own emulator ensuring identical behavior and electrical characteristics. Additionally, parts can be programmed when soldered into the board. This way, the test-program can be separated from the application to save flash space. More importantly, calibration code can be downloaded to the device. Calibration data is then stored in the flash or EEPROM while the final application is downloaded to the product. The AVR devices also support self-programming allowing the devices to upgrade their own firmware. This can be done with minimum risk, as most devices have a separate boot-block that can be individually protected.