Datasheet

2
AT8xC51SND1C
4109E–8051–06/03
The AT83C51SND1C includes 64K Bytes of ROM memory.
The AT8xC51SND1C include 2304 Bytes of RAM memory.
The AT8xC51SND1C provides the necessary features for human interface like timers,
keyboard port, serial or parallel interface (USB, TWI, SPI, IDE), ADC input, I
2
S output,
and all external memory interface (NAND or NOR Flash, SmartMedia, MultiMedia,
DataFlash cards).
Typical Applications • MP3-Player
• PDA, Camera, Mobile Phone MP3
• Car Audio/Multimedia MP3
• Home Audio/Multimedia MP3
Block Diagram
Figure 1. AT8xC51SND1C Block Diagram
8-Bit Internal Bus
Clock and PLL
Unit
C51 (X2 Core)
RAM
2304 Bytes
Flash
ROM
Interrupt
Handler Unit
FILT X2X1
MP3 Decoder
Unit
TWI
Controller
MMC
Interface
I/O
SCL SDA
MDAT
P0-P5
10-bit A to D
Converter
VSSVDD
Keyboard
Interface
KIN3:0
I
2
S/PCM
Audio Interface
AVSSAVDD
1 Alternate function of Port 1
AIN1:0
Ports
INT0 INT1 MOSIMISO
3 Alternate function of Port 3
4 Alternate function of Port 4
Timers 0/1
T1T0
SPI/DataFlash
Controller
MCLK
MCMD
SCK
RST
AREF
DSELDCLK SCLKDOUT
64 KBytes
USB
Controller
D+ D-
UART
RXDTXD
IDE
Interface
SS
Watchdog
Flash Boot
4 KBytes
ISP
UVSSUVDD
and
BRG
ALE
33
33 33444411
1
or
10-bit ADC