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AT89C51SND2C

AT89C51SND2C 特性

• 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
• 20-bit Stereo Audio DAC
  – 93 dB SNR playback stereo channel
  – 32 Ohm/ 20 mW stereo headset drivers
  – Stereo Line Level Input, Differential Mono Auxiliary Input
• Programmable Audio Output for Interfacing with External Audio System
  – PCM Format Compatible
  – I2S Format Compatible
• Mono Audio Power Amplifier
  – 440mW on 8 Ohms Load
• 8-bit MCU C51 Core Based (FMAX = 20 MHz)
• 2304 Bytes of Internal RAM
• 64K Bytes of Code Memory
  – AT89C51SND2C and 89SND2CMP3B: Flash (100K Erase/Write Cycles)
  – AT83SND2C and 83SND2CMP3B: ROM
• 4K Bytes of Boot Flash Memory (AT89C51SND2C and 89SND2CMP3B)
  – ISP: Download from USB (standard) or UART (option)
• 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) for AT8XSND2CMP3B
  – Battery Voltage Monitoring
  – Voice Recording Controller by Software
• Up to 32 Bits of General-purpose I/Os
  – 1 Interrupt Keyboard
  – 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:
  – 2.7 to 3.6V
  – Power amplifier supply 3.2V to 5.5V
  – 37mA Typical Operating at 25°C playing music on earphone
  – Temperature Range: -40°C to +85°C
• Packages
  – CTBGA100

AT89C51SND2C 概述

The AT8xC51SND2C has been developed for handling MP3 ringing tones in mobile phones and
can replace sound generators while adding SD/MMC card reader, MP3 music decoding, and
connection of the cell phone to a PC through USB. Cell phones can also be used as a thumb
drive extending cell phone capabilities.
The AT8xC51SND2C are fully integrated stand-alone hardwired MPEG I/II-Layer 3 decoder with
a C51 microcontroller core handling data flow, MP3-player control, Stereo Audio DAC and Mono
Audio Power Amplifier for speaker control.
The AT89C51SND2C includes 64K Bytes of Flash memory and allows In-System Programming
through an embedded 4K Bytes of Boot Flash memory.
The AT83SND2C includes 64K Bytes of ROM memory.
The AT8xC51SND2C include 2304 Bytes of RAM memory.
The AT8xC51SND2C provides the necessary features for human interface like timers, keyboard
port, serial or parallel interface (USB, TWI, SPI, IDE), I2S output, and all external memory interface
(NAND or NOR Flash, SmartMedia, MultiMedia, DataFlash cards).
The AT8XSND2CMP3B provides also ADC input to the previous configuration. 89SND2CMP3B
includes 64K Bytes of Flash memory. 83SND2CMP3B includes 64K Bytes of ROM memory.
In the following of the document, AT8xC51SND2C refers to the generic product. When named
explicitly, AT8XSND2CMP3B refers to the version with A/D converter.

AT89C51SND2C 应用技术支持与电子电路设计开发资源下载

1. AT89C51SND2C 数据资料 DataSheet 下载. PDF
2. AT89C51SND2C 数据手册DataSheet 下载. PDF
3. 《新闻报道》Atmel 新的單周期8051核心帶來顯著的性能提高與低能耗