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STM32L552CEU6PTR 数据表(PDF) 287 Page - STMicroelectronics |
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STM32L552CEU6PTR 数据表(HTML) 287 Page - STMicroelectronics |
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287 / 340 page  DS12737 Rev 6 287/340 STM32L552xx Electrical characteristics 307 In all timing tables, the THCLK is the HCLK clock period. • Maximum FMC_CLK =55MHz for CLKDIV=0x1 and 42MHz CLKDIV=0x0 for 2.7V<VDD<3.6V • Maximum FMC_CLK =55MHz for CLKDIV=0x1 and 26MHz CLKDIV=0x0 for 1.71V<VDD<1.9V with CL=20pF Figure 59. Synchronous multiplexed NOR/PSRAM read timings FMC_CLK FMC_NEx FMC_NADV FMC_A[25:16] FMC_NOE FMC_AD[15:0] AD[15:0] D1 D2 FMC_NWAIT (WAITCFG = 1b, WAITPOL + 0b) FMC_NWAIT (WAITCFG = 0b, WAITPOL + 0b) tw(CLK) tw(CLK) Data latency = 0 BUSTURN = 0 td(CLKL-NExL) td(CLKH-NExH) t d(CLKL-NADVL) td(CLKL-AV) td(CLKL-NADVH) td(CLKH-AIV) td(CLKL-NOEL) td(CLKH-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) MS32757V1 |
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