STM32H7 datasheet(153/357 Pages) STMICROELECTRONICS

Part #	STM32H7

Description	32-bit Arm® Cortex®-M7 480MHz MCUs, up to 2MB flash, up to 1MB RAM, 46 com. and analog interfaces

PDF	357 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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153 / 357 page

DS12110 Rev 10

153/357

STM32H742xI/G STM32H743xI/G

Electrical characteristics (rev Y)

320

Synchronous waveforms and timings

Figure 28 through Figure 31 represent synchronous waveforms and Table 74 through

Table 77 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

In all the timing tables, the Tfmc_ker_ck is the fmc_ker_ck clock period, with the following

FMC_CLK maximum values:

•

For 2.7 V<VDD<3.6 V, FMC_CLK =100 MHz at 20 pF

•

For 1.8 V<VDD<1.9 V, FMC_CLK =100 MHz at 20 pF

•

For 1.62 V<VDD<1.8 V, FMC_CLK =100 MHz at 15 pF

Table 73. Asynchronous multiplexed PSRAM/NOR write-NWAIT timings(1)

Symbol

Parameter

Min

Max

Unit

tw(NE)

FMC_NE low time

9Tfmc_ker_ck – 1

9Tfmc_ker_ck

tw(NWE)

FMC_NWE low time

7Tfmc_ker_ck – 0.5 7Tfmc_ker_ck + 0.5

tsu(NWAIT_NE)

FMC_NWAIT valid before FMC_NEx high

6Tfmc_ker_ck + 3

th(NE_NWAIT)

FMC_NEx hold time after FMC_NWAIT invalid

4Tfmc_ker_ck

1. Guaranteed by characterization results.

STM32H7 Datasheet(PDF) 153 Page - STMicroelectronics

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