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STM32L151VD Datasheet(PDF) 93 Page - STMicroelectronics |
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STM32L151VD Datasheet(HTML) 93 Page - STMicroelectronics |
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93 / 140 page ![]() STM32L151xD STM32L152xD Electrical characteristics Doc ID 022027 Rev 6 93/140 Figure 24. Synchronous non-multiplexed PSRAM write timings Table 44. Synchronous non-multiplexed PSRAM write timings(1) 1. CL = 30 pF. Symbol Parameter Min Max Unit tw(CLK) FSMC_CLK period 2*THCLK -3 - ns td(CLKL-NExL) FSMC_CLK low to FSMC_NEx low (x = 0...2) - 0 ns td(CLKL-NExH) FSMC_CLK low to FSMC_NEx high (x = 0...2) 1 - ns td(CLKL-NADVL) FSMC_CLK low to FSMC_NADV low - 5 ns td(CLKL-NADVH) FSMC_CLK low to FSMC_NADV high 7 - ns td(CLKL-AV) FSMC_CLK low to FSMC_Ax valid (x = 16...25) - 0 ns td(CLKL-AIV) FSMC_CLK low to FSMC_Ax invalid (x = 16...25) THCLK + 4 - ns td(CLKL-NWEL) FSMC_CLK low to FSMC_NWE low - 2 ns td(CLKL-NWEH) FSMC_CLK low to FSMC_NWE high 5 - ns td(CLKL-DATA) FSMC_D[15:0] valid data after FSMC_CLK low - 7 ns td(CLKL-NBLH) FSMC_CLK low to FSMC_NBL high 3 - ns tsu(NWAITV-CLKH) FSMC_NWAIT valid before FSMC_CLK high TBD - ns th(CLKH-NWAITV) FSMC_NWAIT valid after FSMC_CLK high TBD - ns FSMC_CLK FSMC_NEx FSMC_A[25:0] FSMC_NWE FSMC_D[15:0] D1 D2 FSMC_NWAIT (WAITCFG = 0b, WAITPOL + 0b) tw(CLK) tw(CLK) Data latency = 0 BUSTURN = 0 td(CLKL-NExL) td(CLKL-NExH) td(CLKL-AV) td(CLKL-AIV) td(CLKL-NWEH) td(CLKL-NWEL) td(CLKL-Data) tsu(NWAITV-CLKH) th(CLKH-NWAITV) ai14993g FSMC_NADV td(CLKL-NADVL) td(CLKL-NADVH) td(CLKL-Data) FSMC_NBL td(CLKL-NBLH) |
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