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STM32H7B3AI Datasheet(PDF) 126 Page - STMicroelectronics

No. de pieza STM32H7B3AI
Descripción Electrónicos  32-bit Arm® Cortex®-M7 280 MHz MCUs, 2-Mbyte flash memory, 1.4-Mbyte RAM, 46 com. and analog interfaces, SMPS, crypto
PDF  238 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32H7B3AI Datasheet(HTML) 126 Page - STMicroelectronics

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Figure 37. Asynchronous non-multiplexed SRAM/PSRAM/NOR write waveforms
NBL
Data
FMC_NEx
FMC_NBL[1:0]
FMC_D[15:0]
tv(BL_NE)
th(Data_NWE)
FMC_NOE
Address
FMC_A[25:0]
tv(A_NE)
tw(NWE)
FMC_NWE
tv(NWE_NE)
th(NE_NWE)
th(A_NWE)
th(BL_NWE)
tv(Data_NE)
tw(NE)
FMC_NADV(1)
tv(NADV_NE)
tw(NADV)
FMC_NWAIT
tsu(NWAIT_NE)
th(NE_NWAIT)
1.
Mode 2/B, C and D only. In Mode 1, FMC_NADV is not used.
Table 74. Asynchronous non-multiplexed SRAM/PSRAM/NOR write timings
Symbol
Parameter
Min(1)
Max(1)
Unit
tw(NE)
FMC_NE low time
3Tfmc_ker_ck − 1
3Tfmc_ker_ck + 1
ns
tv(NWE_NE)
FMC_NEx low to FMC_NWE low
Tfmc_ker_ck − 1
Tfmc_ker_ck
tw(NWE)
FMC_NWE low time
Tfmc_ker_ck − 0.5
Tfmc_ker_ck + 0.5
th(NE_NWE)
FMC_NWE high to FMC_NE high hold time
Tfmc_ker_ck
-
tv(A_NE)
FMC_NEx low to FMC_A valid
-
2
th(A_NWE)
Address hold time after FMC_NWE high
Tfmc_ker_ck + 0.5
-
tv(BL_NE)
FMC_NEx low to FMC_BL valid
-
0.5
th(BL_NWE)
FMC_BL hold time after FMC_NWE high
Tfmc_ker_ck − 0.5
-
tv(Data_NE)
Data to FMC_NEx low to Data valid
-
Tfmc_ker_ck + 3
th(Data_NWE)
Data hold time after FMC_NWE high
Tfmc_ker_ck+1
-
tv(NADV_NE)
FMC_NEx low to FMC_NADV low
-
0
tw(NADV)
FMC_NADV low time
-
Tfmc_ker_ck + 1
STM32H7B3xI
Operating conditions
DS13139 - Rev 8
page 126/238



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