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UM0290 bảng dữ liệu(PDF) 39 Page - STMicroelectronics

tên linh kiện UM0290
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
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UM0290 bảng dữ liệu(HTML) 39 Page - STMicroelectronics

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UM0290
Mass storage demo
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Figure 8.
Mass storage file architecture
This implementation uses the internal RAM like memory support. In fact the internal RAM is
divided into the following three different areas (see Figure 9):
●
General purpose memory area: this part of memory is used by the firmware to store
internal variables.
●
Medium memory area: this part of memory is dedicated to the user data. It is used to
store/read/write data from Windows.
●
Free area: this part of memory is not used.
Figure 9.
Internal RAM areas
Standard Lib
Commun
Files
Mass Storage Files
Standard Lib
USB Lib
Tools Files
Common
files
Simple Buffer
Transfer Mode
Double Buffer
Transfer Mode
Simple buffer transfer mode implementation
Double buffer transfer mode implementation
USB Mass Storage Application File
RAM
General purpose memory area
Medium memory area
Free memory area



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