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AN2784 Datasheet(PDF) 2 Page - STMicroelectronics

Part # AN2784
Description  Using the high-density STM32F10xxx FSMC peripheral to drive external memories
PDF  31 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN2784 Datasheet(HTML) 2 Page - STMicroelectronics

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Contents
AN2784
2/31
Doc ID 14779 Rev 4
Contents
1
Overview of the STM32F10xxx flexible static memory controller . . . . 5
1.1
Interfacing asynchronous static memories (NOR Flash, SRAM) . . . . . . . . 7
2
Interfacing with a nonmultiplexed, asynchronous
16-bit NOR Flash memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1
FSMC configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1.1
Typical use of the FSMC to interface with a NOR Flash memory . . . . . 11
2.2
Timing computation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.3
Hardware connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.4
Code execution from an external NOR Flash memory . . . . . . . . . . . . . . . 15
3
Interfacing with a nonmultiplexed, asynchronous 16-bit SRAM . . . . . 16
3.1
FSMC configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.1.1
Typical use of the FSMC to interface with an SRAM . . . . . . . . . . . . . . . 17
3.2
Timing computation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.3
Hardware connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.4
Using the external SRAM as a data memory . . . . . . . . . . . . . . . . . . . . . . 19
4
Interfacing with an 8-bit NAND Flash memory . . . . . . . . . . . . . . . . . . . 20
4.1
FSMC configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.1.1
Typical use of the FSMC to interface with a NAND memory . . . . . . . . . 22
4.2
Timing computation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.3
Hardware connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4.4
Error correction code computation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.4.1
Error correction code (ECC) computation overview . . . . . . . . . . . . . . . . 26
4.4.2
Error detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5
STM32F10xxx FSMC configuration in 100-pin packages . . . . . . . . . . 28
5.1
Interfacing the FSMC with a NAND Flash memory . . . . . . . . . . . . . . . . . 28
5.2
Interfacing the FSMC with a NOR Flash memory . . . . . . . . . . . . . . . . . . 29
6
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30



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