stm32 /stm32h7rs /STM32H7S /FMC /FMC_SDRTR

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Interpret as FMC_SDRTR

31 2827 2423 2019 1615 1211 87 43 0 0 0 0 0 0 0 0 00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (B_0x0)CRE 0COUNT0 (B_0x0)REIE

CRE=B_0x0, REIE=B_0x0

Description

SDRAM refresh timer register

Fields

CRE

Clear Refresh error flag This bit is used to clear the Refresh Error Flag (RE) in the Status Register.

0 (B_0x0): no effect

1 (B_0x1): Refresh Error flag is cleared

COUNT

Refresh Timer Count This 13-bit field defines the refresh rate of the SDRAM device. It is expressed in number of memory clock cycles. It must be set at least to 41 SDRAM clock cycles (0x29). Refresh rate = (COUNT + 1) x SDRAM frequency clock COUNT = (SDRAM refresh period / Number of rows) - 20

REIE

RES Interrupt Enable

0 (B_0x0): Interrupt is disabled

1 (B_0x1): An Interrupt is generated if RE = 1

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