Rev. 4109H–8051–01/05
1. Features
MPEG I/II-Layer 3 Hardwired Decoder
– Stand-alone MP3 Decoder
– 48, 44.1, 32, 24, 22.05, 16 kHz Sampling Frequency
– Separated Digital Volume Control on Left and Right Channels (Software Control
using 31 Steps)
– Bass, Medium, and Treble Control (31 Steps)
– Bass Boost Sound Effect
– Ancillary Data Extraction
– CRC Error and MPEG Frame Synchronization Indicators
Programmable Audio Output for Interfacing with Common Audio DAC
– PCM Format Compatible
–I
2
S Format Compatible
8-bit MCU C51 Core Based (F
MAX
= 20 MHz)
2304 Bytes of Internal RAM
64K Bytes of Code Memory
– AT89C51SND1C: Flash (100K Erase/Write Cycles)
– AT83SND1C: ROM
4K Bytes of Boot Flash Memory (AT89C51SND1C)
– ISP: Download from USB (standard) or UART (option)
External Code Memory
– AT80C51SND1C: ROMless
USB Rev 1.1 Controller
– Full Speed Data Transmission
Built-in PLL
– MP3 Audio Clocks
–USB Clock
MultiMedia Card
®
Interface Compatibility
Atmel DataFlash
®
SPI Interface Compatibility
IDE/ATAPI Interface
2 Channels 10-bit ADC, 8 kHz (8-true bit)
– Battery Voltage Monitoring
– Voice Recording Controlled by Software
Up to 44 Bits of General-purpose I/Os
– 4-bit Interrupt Keyboard Port for a 4 x n Matrix
–SmartMedia
®
Software Interface
2 Standard 16-bit Timers/Counters
Hardware Watchdog Timer
Standard Full Duplex UART with Baud Rate Generator
Two Wire Master and Slave Modes Controller
SPI Master and Slave Modes Controller
Power Management
– Power-on Reset
– Software Programmable MCU Clock
– Idle Mode, Power-down Mode
Operating Conditions:
–3V, ±10%, 25 mA Typical Operating at 25°C
– Temperature Range: -40°C to +85°C
Packages
– TQFP80, BGA81, PLCC84 (Development Board)
–Dice
Single-Chip
Flash
Microcontroller
with MP3
Decoder and
Human Interface
AT83SND1C
AT89C51SND1C
AT80C51SND1C