An app note from Atmel, digital sound recorder with AVR and DataFlash (PDF!): This application note describes how to record, store and play back sound using any AVR microcontroller with A/D converter, the AT45DB161B DataFlash memory and a few extra components. This application note shows in detail the usage of the A/D Converter for sound recording, the Serial Peripheral Interface […]
Atmel describes their DataFlash memory chips and how to interface with them: The DataFlash is perfectly suited for digital voice-, image-, code- and data-storage applications, especially where low power consumption is required. In these storage applications, the DataFlash’s small page size not only makes it easier to manipulate data, it also increases storage efficiency.