AT89C51SND2C AT83SND2C AT89C51SND1C AT83SND1C AT80C51SND1C

AT89C51SND2C  C51 Microcontroller with Embedded MP3 Decoder and 64 Kbytes Flash. MultiMediaCard, DataFlash?, SmartMedia, CompactFlash and IDE Interfaces. SPI and Two-wire Interface (TWI). USB 1.1. Audio Stereo DAC and 500mW Power Amplifier. Low Power. In-System Programming via USB or UART. 
 
AT83SND2C  C51 Microcontroller with Embedded MP3 Decoder and 64 Kbytes ROM. MultiMediaCard, DataFlash?, SmartMedia, CompactFlash and IDE Interfaces. SPI and Two Wire Interface (TWI).USB 1.1. Audio Stereo DAC and 500mW Power Amplifier. Low Power. 
 
AT89C51SND1C  C51 Microcontroller with Embedded MP3 Decoder and 64 Kbytes Flash. MultiMediaCard, DataFlash?, SmartMedia, CompactFlash and IDE Interfaces. SPI and Two-wire Interface (TWI).USB 1.1. Voice Recording. Low Power. In-System Programming via USB or UART. 
 
AT83SND1C  C51 Microcontroller with Embedded MP3 Decoder and 64 Kbytes ROM. MultiMediaCard, DataFlash?, SmartMedia, CompactFlash and IDE Interfaces. SPI and Two-wire Interface (TWI). USB 1.1. Voice Recording. Low Power. 
 
AT80C51SND1C  C51 Microcontroller with Embedded MP3 Decoder ROMless. MultiMediaCard, DataFlash?, SmartMedia, CompactFlash and IDE Interfaces. SPI and Two-wire Interface (TWI). USB 1.1. Voice Recording. Low Power.