AN4570 datasheet(10/46 Pages) STMICROELECTRONICS

Part #	AN4570

Description	This application note describes how to use the high-density

PDF	46 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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10 / 46 page

Interfacing with a non-multiplexed, asynchronous 16-bit NOR Flash memory

AN4570

10/46

DocID026804 Rev 1

Figure 3 and Figure 4 show the different timings during a typical NOR Flash memory

access.

Figure 3. Asynchronous NOR Flash read access timing

Figure 4. Asynchronous NOR Flash write access timing

2.1.1

Typical use of the FMC to interface with a NOR Flash memory

The STM32F30xxD/E FMC has four different banks of 64 Mbyte to support NOR Flash

memories/PSRAM and similar external memories.

The external memories share the address, data and control signals with the controller. Each

external device is accessed by means of a unique Chip Select signal, but the FMC performs

only one access at a time to an external device.

Each bank is configured by means of dedicated registers. Configuration includes the

different features and the timing parameters.

AN4570 Datasheet(PDF) 10 Page - STMicroelectronics