Flexible Static Memory Controller (Fsmc); Fsmc Main Features - ST STM32F101 series Reference Manual

Advanced arm-based 32-bit mcus

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Flexible static memory controller (FSMC)

Low-density devices are STM32F101xx, STM32F102xx and STM32F103xx

microcontrollers where the Flash memory density ranges between 16 and 32 Kbytes.

Medium-density devices are STM32F101xx and STM32F103xx microcontrollers where

the Flash memory density ranges between 32 and 128 Kbytes.

High-density devices are STM32F101xx and STM32F103xx microcontrollers where the

Flash memory density ranges between 256 and 512 Kbytes.

XL-density devices are STM32F101xx and STM32F103xx microcontrollers where the

Flash memory density ranges between 768 Kbytes and 1 Mbyte.

Connectivity line devices are STM32F105xx and STM32F107xx microcontrollers.

This section applies to high-density and XL-density devices only.

The FSMC block is able to interface with synchronous and asynchronous memories and 16-

bit PC memory cards. Its main purpose is to:

Translate the AHB transactions into the appropriate external device protocol

Meet the access timing requirements of the external devices

All external memories share the addresses, data and control signals with the controller.

Each external device is accessed by means of a unique chip select. The FSMC performs

only one access at a time to an external device.

Flexible static memory controller (FSMC)

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