STM32L471VG datasheet(199/218 Pages) STMICROELECTRONICS

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DocID027226 Rev 1

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STM32L471xx

Electrical characteristics

199

Figure 47. NAND controller waveforms for common memory write access

Table 100. Switching characteristics for NAND Flash read cycles(1)(2)

1. CL = 30 pF.

2. Guaranteed by characterization results.

Symbol

Parameter

Min

Max

Unit

Tw(N0E)

FMC_NOE low width

4THCLK-1

4THCLK+1

Tsu(D-NOE)

FMC_D[15-0] valid data before FMC_NOE high

Th(NOE-D)

FMC_D[15-0] valid data after FMC_NOE high

Td(NCE-NOE) FMC_NCE valid before FMC_NOE low

3THCLK+1

Th(NOE-ALE)

FMC_NOE high to FMC_ALE invalid

2THCLK-2

Table 101. Switching characteristics for NAND Flash write cycles(1)(2)

1. CL = 30 pF.

2. Guaranteed by characterization results.

Symbol

Parameter

Min

Max

Unit

Tw(NWE)

FMC_NWE low width

4THCLK-1

4THCLK+1

Tv(NWE-D)

FMC_NWE low to FMC_D[15-0] valid

2.5

Th(NWE-D)

FMC_NWE high to FMC_D[15-0] invalid

3THCLK-4

Td(D-NWE)

FMC_D[15-0] valid before FMC_NWE high

5THCLK-3

Td(NCE_NWE)

FMC_NCE valid before FMC_NWE low

3THCLK+1

Th(NWE-ALE)

FMC_NWE high to FMC_ALE invalid

2THCLK-2

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