Microcontroler PIC18F6525
http://ww1.microchip.com/downloads/en/DeviceDoc/39612.pdf

Audio - PCM sound generator ml2870a
http://www.okisemi.com/english/pis/pi-ml2870.pdf
http://www.globaltec.com.hk/databook/oki/ML2870A_010001_E.pdf

ADPCM converter for OKI adpcm
http://www.xentec.be/products/vox_studio/formats/formats.htm
http://www.sal.ksu.edu/faculty/tim/vox/
http://sox.sourceforge.net/

Memory AT45DB081B
http://www.atmel.com/dyn/products/product_card.asp?part_id=2470

General purpose op amp MCP6002
http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1335&dDocName=en010434

LED driver TLC5922
http://focus.ti.com/docs/prod/folders/print/tlc5922.html

Motor drivers L293dne
http://alldatasheet.net/datasheet-pdf/pdf/TI/L293DNE.html