STM32L151VD datasheet(88/140 Pages) STMICROELECTRONICS

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Electrical characteristics

STM32L151xD STM32L152xD

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Doc ID 022027 Rev 6

Synchronous waveforms and timings

Figure 21 through Figure 24 represent synchronous waveforms and Table 42 through

Table 44 provide the corresponding timings. The results shown in these tables are obtained

with the following FSMC configuration:

●

BurstAccessMode = FSMC_BurstAccessMode_Enable;

●

MemoryType = FSMC_MemoryType_CRAM;

●

WriteBurst = FSMC_WriteBurst_Enable;

●

CLKDivision = 1;

●

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

Figure 21.

Synchronous multiplexed NOR/PSRAM read timings

FSMC_CLK

FSMC_NEx

FSMC_NADV

FSMC_A[25:16]

FSMC_NOE

FSMC_AD[15:0]

AD[15:0]

FSMC_NWAIT

(WAITCFG = 1b, WAITPOL + 0b)

FSMC_NWAIT

(WAITCFG = 0b, WAITPOL + 0b)

tw(CLK)

Data latency = 0

BUSTURN = 0

td(CLKL-NExL)

td(CLKL-NExH)

td(CLKL-NADVL)

td(CLKL-AV)

td(CLKL-NADVH)

td(CLKL-AIV)

td(CLKL-NOEL)

td(CLKL-NOEH)

td(CLKL-ADV)

td(CLKL-ADIV)

tsu(ADV-CLKH)

th(CLKH-ADV)

tsu(ADV-CLKH)

th(CLKH-ADV)

tsu(NWAITV-CLKH)

th(CLKH-NWAITV)

tsu(NWAITV-CLKH)

th(CLKH-NWAITV)

tsu(NWAITV-CLKH)

th(CLKH-NWAITV)

ai14893g

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