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STM32F427AI 数据表(PDF) 175 Page - STMicroelectronics

部件名 STM32F427AI
功能描述  32b Arm® Cortex®-M4 MCUFPU, 225DMIPS, up to 2MB Flash/2564KB RAM, USB OTG HS/FS, Ethernet, 17 TIMs, 3 ADCs, 20 com. interfaces, camera & LCD-TFT
PDF  240 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STM32F427AI 数据表(HTML) 175 Page - STMicroelectronics

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DS9405 Rev 12
175/240
STM32F427xx STM32F429xx
Electrical characteristics
197
Figure 58. Asynchronous multiplexed PSRAM/NOR write waveforms
NBL
Data
FMC_ NEx
FMC_ NBL[1:0]
FMC_ AD[15:0]
tv(BL_NE)
th(Data_NWE)
FMC_NOE
Address
FMC_ A[25:16]
tv(A_NE)
tw(NWE)
FMC_NWE
tv(NWE_NE)
t h(NE_NWE)
th(A_NWE)
th(BL_NWE)
t v(A_NE)
tw(NE)
MS32756V1
Address
FMC_NADV
t v(NADV_NE)
tw(NADV)
tv(Data_NADV)
th(AD_NADV)
FMC_NWAIT
tsu(NWAIT_NE)
th(NE_NWAIT)
Table 93. Asynchronous multiplexed PSRAM/NOR write timings(1)(2)
Symbol
Parameter
Min
Max
Unit
tw(NE)
FMC_NE low time
4THCLK
4THCLK+0.5
ns
tv(NWE_NE)
FMC_NEx low to FMC_NWE low
THCLK − 1THCLK+0.5
ns
tw(NWE)
FMC_NWE low time
2THCLK
2THCLK+0.5
ns
th(NE_NWE)
FMC_NWE high to FMC_NE high hold time
THCLK
-ns
tv(A_NE)
FMC_NEx low to FMC_A valid
-
0
ns
tv(NADV_NE)
FMC_NEx low to FMC_NADV low
0.5
1
ns
tw(NADV)
FMC_NADV low time
THCLK − 0.5 THCLK+ 0.5
ns
th(AD_NADV)
FMC_AD(adress) valid hold time after FMC_NADV high)
THCLK − 2-ns
th(A_NWE)
Address hold time after FMC_NWE high
THCLK
-ns
th(BL_NWE)
FMC_BL hold time after FMC_NWE high
THCLK − 2-ns
tv(BL_NE)
FMC_NEx low to FMC_BL valid
-
2
ns
tv(Data_NADV)
FMC_NADV high to Data valid
-
THCLK +1.5
ns
th(Data_NWE)
Data hold time after FMC_NWE high
THCLK +0.5
-
ns
1. CL = 30 pF.
2. Evaluated by characterization.



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