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參數(shù)資料
| 型號(hào)： | DOC4106 |
| 廠商： | Atmel Corp. |
| 英文描述： | Single-Chip Microcontroller with MP3 Decoder and Man-Machine Interface |
| 中文描述： | 單片微控制器，帶有MP3解碼器和人機(jī)界面 |
| 文件頁數(shù)： | 14/47頁 |
| 文件大?。?/td> | 791K |
| 代理商： | DOC4106 |
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AT8xC51SND1C
4106F–8051–10/02
Address Spaces
The AT8xC51SND1C derivatives implement four different address spaces:
Program/Code Memory
Boot Memory
Data Memory
Special Function Registers (SFRs)
Code Memory
The AT89C51SND1C and AT83C51SND1C implement 64K Bytes of on-chip pro-
gram/code memory. The AT83C51SND1C product provides the internal program/code
memory in ROM technology while the AT89C51SND1C product provides it in Flash
technology.
The Flash memory increases ROM functionality by enabling in-circuit electrical erasure
and programming. Thanks to the internal charge pump, the high voltage needed for pro-
gramming or erasing Flash cells is generated on-chip using the standard V
DD
voltage.
Thus, the AT89C51SND1C can be programmed using only one voltage and allows in
application software programming commonly known as IAP. Hardware programming
mode is also available using specific programming tools.
Boot Memory
The AT89C51SND1C implements 4K Bytes of on-chip boot memory provided in Flash
technology. This boot memory is delivered programmed with a standard bootloader soft-
ware allowing In-system Programming commonly known as ISP. It also contains some
Application Programming Interfaces routines commonly known as API allowing user to
develop his own bootloader.
Data Memory
The AT8xC51SND1 derivatives implement 2304 Bytes of on-chip data RAM. This mem-
ory is divided in two separate areas:
256 Bytes of on-chip RAM memory (standard C51 memory).
2048 Bytes of on-chip expanded RAM memory (ERAM accessible via MOVX
instructions).
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