STM32F405OGY7TR 查看數據表（PDF） - STMicroelectronics

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STM32F405OGY7TR

ARM Cortex-M4 32b MCU+FPU, 210DMIPS, up to 1MB Flash/192+4KB RAM, USB OTG HS/FS, Ethernet, 17 TIMs, 3 ADCs, 15 comm. interfaces & camera

STMicroelectronics 

Electrical characteristics

STM32F405xx, STM32F407xx

Figure 71. NAND controller waveforms for common memory read access

FSMC_NCEx

ALE (FSMC_A17)

CLE (FSMC_A16)

FSMC_NWE

FSMC_NOE

FSMC_D[15:0]

td(ALE-NOE)

th(NOE-ALE)

tw(NOE)

tsu(D-NOE)

th(NOE-D)

ai14912c

Figure 72. NAND controller waveforms for common memory write access

FSMC_NCEx

ALE (FSMC_A17)

CLE (FSMC_A16)

td(ALE-NOE)

FSMC_NWE

tw(NWE)

th(NOE-ALE)

FSMC_NOE

FSMC_D[15:0]

td(D-NWE)

tv(NWE-D)

th(NWE-D)

ai14913c

Table 85. Switching characteristics for NAND Flash read cycles(1)

Symbol

Parameter

Min

Max

Unit

tw(N0E) FSMC_NOE low width

4THCLK–

0.5

4THCLK+ 3

ns

tsu(D-NOE) FSMC_D[15-0] valid data before FSMC_NOE high

10

-

ns

th(NOE-D) FSMC_D[15-0] valid data after FSMC_NOE high

0

-

ns

td(ALE-NOE) FSMC_ALE valid before FSMC_NOE low

-

3THCLK

ns

th(NOE-ALE) FSMC_NWE high to FSMC_ALE invalid

3THCLK– 2

-

ns

1. CL = 30 pF.

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DocID022152 Rev 4

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