STM32F479AI datasheet(168/208 Pages) STMICROELECTRONICS

tên linh kiện	STM32F479AI

Giải thích chi tiết về linh kiện	8- to 14-bit parallel camera interface up to 54 Mbytes

PDF	208 Pages

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nhà sản xuất	STMICROELECTRONICS [STMicroelectronics]

Trang chủ	http://www.st.com

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168 / 208 page

Electrical characteristics

STM32F479xx

168/208

DocID028010 Rev 2

Synchronous waveforms and timings

Figures 61 through 64 represent synchronous waveforms and Table 97 through Table 100

provide the corresponding timings. The results shown in these tables are obtained with the

following FMC configuration:

•

BurstAccessMode = FMC_BurstAccessMode_Enable;

•

MemoryType = FMC_MemoryType_CRAM;

•

WriteBurst = FMC_WriteBurst_Enable;

•

CLKDivision = 1;

•

DataLatency = 1 for NOR Flash; DataLatency = 0 for PSRAM

•

CL = 30 pF on data and address lines. CL = 10 pF on FMC_CLK unless otherwise

specified.

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

•

For 2.7 V≤ VDD≤ 3.6 V, maximum FMC_CLK = 90 MHz at CL = 30 pF (on FMC_CLK).

•

For 1.71 V≤ VDD<1.9 V, maximum FMC_CLK = 60 MHz at CL = 10 pF (on FMC_CLK).

Table 96. Asynchronous multiplexed PSRAM/NOR write-NWAIT timings(1)

1. Based on test during characterization.

Symbol

Parameter

Min

Max

Unit

tw(NE)

FMC_NE low time

9THCLK

9THCLK+0.5

tw(NWE)

FMC_NWE low time

7THCLK

7THCLK+2

tsu(NWAIT_NE) FMC_NWAIT valid before FMC_NEx high

6THCLK+1.5

th(NE_NWAIT) FMC_NEx hold time after FMC_NWAIT invalid

4THCLK–1

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