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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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CD00237391 датащи(PDF) 128 Page - STMicroelectronics |
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CD00237391 датащи(HTML) 128 Page - STMicroelectronics |
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128 / 177 page  Electrical characteristics STM32F20xxx 128/177 Doc ID 15818 Rev 9 Synchronous waveforms and timings Figure 58 through Figure 61 represent synchronous waveforms and Table 75 through Table 77 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; (0 is not supported, see the STM32F20xxx/21xxx reference manual) ● DataLatency = 1 for NOR Flash; DataLatency = 0 for PSRAM In all timing tables, the THCLK is the HCLK clock period. Figure 58. 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] D1 D2 FSMC_NWAIT (WAITCFG = 1b, WAITPOL + 0b) FSMC_NWAIT (WAITCFG = 0b, WAITPOL + 0b) tw(CLK) 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(CLKH-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) ai14893h |
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