Basic operation and configuration of SDRAM

This article mainly explains "the basic operation and configuration of SDRAM". Interested friends may wish to have a look. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn the basic operation and configuration of SDRAM.

Development environment

IDE: IAR 8.3.2

Hardware board: punctual atom STM32H743 development board

Peripheral configuration

SDRAM configuration involves more pins, all pins open pull-up, high-speed mode

Parameter configuration

Address Mapping of FMC

We use the BANK1 address as 0xC0000000, if the actual product design uses BANK2, the address is 0xD0000000. It requires special attention. We test the assumption that 4k of data is written from the 0x800 of BANK1. The first data is 0xA244250F, and each time the written data is added by 1, and then read it to verify whether what is read and written is the same. The same proves that the operation is correct, lights up the LED0, and flashes LED1 if not.

Add code

First of all, you need to add code to the generated project of STM32CubeMX

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