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STM32F479AI 데이터시트(PDF) 171 Page - STMicroelectronics

부품명 STM32F479AI
상세설명  ARMCortex-M4 32b MCUFPU, 225DMIPS, up to 2MB Flash/3844KB RAM, USB OTG HS/FS, Ethernet, FMC, dual Quad-SPI, Crypto, Graphical accelerator, Camera IF, LCD-TFT & MIPI DSI
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
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STM32F479AI 데이터시트(HTML) 171 Page - STMicroelectronics

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STM32F479xx
Electrical characteristics
190
Synchronous waveforms and timings
Figures 63 through 66 represent synchronous waveforms and Table 96 through Table 99
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 95. 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
ns
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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