STM32F756VG datasheet(184/228 Pages) STMICROELECTRONICS

184 / 228 page

Electrical characteristics

STM32F756xx

184/228

DocID027589 Rev 4

NAND controller waveforms and timings

Figure 66 through Figure 69 represent synchronous waveforms, and Table 100 and

Table 101 provide the corresponding timings. The results shown in this table are obtained

with the following FMC configuration:

•

COM.FMC_SetupTime = 0x01;

•

COM.FMC_WaitSetupTime = 0x03;

•

COM.FMC_HoldSetupTime = 0x02;

•

COM.FMC_HiZSetupTime = 0x01;

•

ATT.FMC_SetupTime = 0x01;

•

ATT.FMC_WaitSetupTime = 0x03;

•

ATT.FMC_HoldSetupTime = 0x02;

•

ATT.FMC_HiZSetupTime = 0x01;

•

Bank = FMC_Bank_NAND;

•

MemoryDataWidth = FMC_MemoryDataWidth_16b;

•

ECC = FMC_ECC_Enable;

•

ECCPageSize = FMC_ECCPageSize_512Bytes;

•

TCLRSetupTime = 0;

•

TARSetupTime = 0.

In all timing tables, the THCLK is the HCLK clock period.

Table 99. Synchronous non-multiplexed PSRAM write timings(1)

1. Guaranteed by characterization results.

Symbol

Parameter

Min

Max

Unit

t(CLK)

FMC_CLK period

2THCLK−1

td(CLKL-NExL) FMC_CLK low to FMC_NEx low (x=0..2)

2.5

t(CLKH-NExH)

FMC_CLK high to FMC_NEx high (x= 0…2)

THCLK+0.5

td(CLKL-NADVL) FMC_CLK low to FMC_NADV low

1.5

td(CLKL-NADVH) FMC_CLK low to FMC_NADV high

td(CLKL-AV)

FMC_CLK low to FMC_Ax valid (x=16…25)

2.5

td(CLKH-AIV)

FMC_CLK high to FMC_Ax invalid (x=16…25)

td(CLKL-NWEL) FMC_CLK low to FMC_NWE low

1.5

td(CLKH-NWEH) FMC_CLK high to FMC_NWE high

THCLK+1

td(CLKL-Data)

FMC_D[15:0] valid data after FMC_CLK low

td(CLKL-NBLL) FMC_CLK low to FMC_NBL low

1.5

td(CLKH-NBLH) FMC_CLK high to FMC_NBL high

THCLK+0.5

tsu(NWAIT-CLKH) FMC_NWAIT valid before FMC_CLK high

th(CLKH-NWAIT) FMC_NWAIT valid after FMC_CLK high

3.5

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