STM32F101XF datasheet(59/117 Pages) STMICROELECTRONICS

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STM32F101xF, STM32F101xG

Electrical characteristics

Figure 20. Asynchronous non-multiplexed SRAM/PSRAM/NOR write waveforms

1. Mode 2/B, C and D only. In Mode 1, FSMC_NADV is not used.

th(Data_NE) Data hold time after FSMC_NEx high

tv(NADV_NE) FSMC_NEx low to FSMC_NADV low

tw(NADV)

FSMC_NADV low time

tHCLK + 2

1. CL = 15 pF.

2. Guaranteed by characterization results.

Table 32. Asynchronous non-multiplexed SRAM/PSRAM/NOR write timings(1)(2)

Symbol

Parameter

Min

Max

Unit

tw(NE)

FSMC_NE low time

3tHCLK + 0.5 3tHCLK + 1.5

tv(NWE_NE) FSMC_NEx low to FSMC_NWE low

tHCLK + 0.5

tHCLK + 1.5

tw(NWE)

FSMC_NWE low time

tHCLK – 0.5

tHCLK + 1

th(NE_NWE) FSMC_NWE high to FSMC_NE high hold time

tHCLK – 0.5

tv(A_NE)

FSMC_NEx low to FSMC_A valid

th(A_NWE)

Address hold time after FSMC_NWE high

tHCLK

-ns

tv(BL_NE)

FSMC_NEx low to FSMC_BL valid

1.5

th(BL_NWE) FSMC_BL hold time after FSMC_NWE high

tHCLK – 1.5

tv(Data_NE) FSMC_NEx low to Data valid

tHCLK

Table 31. Asynchronous non-multiplexed SRAM/PSRAM/NOR read timings(1) (2)

Symbol

Parameter

Min

Max

Unit

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