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STM32F215RG データシート(PDF) 134 Page - STMicroelectronics |
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STM32F215RG データシート(HTML) 134 Page - STMicroelectronics |
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134 / 175 page  Electrical characteristics STM32F21xxx 134/175 DocID17050 Rev 9 Synchronous waveforms and timings Figure 58 through Figure 61 represent synchronous waveforms and Table 76 through Table 78 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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