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AM261...ZEJ 数据表(PDF) 140 Page - Texas Instruments |
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AM261...ZEJ 数据表(HTML) 140 Page - Texas Instruments |
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140 / 218 page  6.11.5.7.7 GPMC/NAND Flash Switching Characteristics - Asynchronous Mode 100MHz (15) NO. PARAMETER DESCRIPTION MIN MAX UNIT GNF0 tw(wenV) Pulse duration, GPMC0_WEn valid A(1) ns GNF1 td(csnV-wenV) Delay time, GPMC0_CSn[x](13) valid to GPMC0_WEn valid B(2) – 2 B(2) + 2 ns GNF2 tw(cleH-wenV) Delay time, GPMC0_BE0n_CLE high to GPMC0_WEn valid C(3) – 2 C(3) + 2 ns GNF3 tw(wenV-dV) Delay time, GPMC0_AD[31:0] valid to GPMC0_WEn valid D(4) – 2 D(4) + 2 ns GNF4 tw(wenIV-dIV) Delay time, GPMC0_WEn invalid to GPMC0_AD[31:0] invalid E(5) – 2 E(5) + 2 ns GNF5 tw(wenIV-cleIV) Delay time, GPMC0_WEn invalid to GPMC0_BE0n_CLE invalid F(6) – 2 F(6) + 2 ns GNF6 tw(wenIV-csnIV) Delay time, GPMC0_WEn invalid to GPMC0_CSn[x](13) invalid G(7) – 2 G(7) + 2 ns GNF7 tw(aleH-wenV) Delay time, GPMC0_ADVn_ALE high to GPMC0_WEn valid C(3) – 2 C(3) + 2 ns GNF8 tw(wenIV-aleIV) Delay time, GPMC0_WEn invalid to GPMC0_ADVn_ALE invalid F(6) – 2 F(6) + 2 ns GNF9 tc(wen) Cycle time, write H(8) ns GNF10 td(csnV-oenV) Delay time, GPMC0_CSn[x](13) valid to GPMC0_OEn_REn valid I(9) – 2 I(9) + 2 ns GNF13 tw(oenV) Pulse duration, GPMC0_OEn_REn valid K(10) ns GNF14 tc(oen) Cycle time, read L(11) ns GNF15 tw(oenIV-csnIV) Delay time, GPMC0_OEn_REn invalid to GPMC0_CSn[x](13) invalid M(12) – 2 M(12) + 2 ns (1) A = (WEOffTime - WEOnTime) × (TimeParaGranularity + 1) × GPMC_FCLK(14) (2) B = ((WEOnTime - CSOnTime) × (TimeParaGranularity + 1) + 0.5 × (WEExtraDelay - CSExtraDelay)) × GPMC_FCLK(14) (3) C = ((WEOnTime - ADVOnTime) × (TimeParaGranularity + 1) + 0.5 × (WEExtraDelay - ADVExtraDelay)) × GPMC_FCLK(14) (4) D = (WEOnTime × (TimeParaGranularity + 1) + 0.5 × WEExtraDelay) × GPMC_FCLK(14) (5) E = ((WrCycleTime - WEOffTime) × (TimeParaGranularity + 1) - 0.5 × WEExtraDelay) × GPMC_FCLK(14) (6) F = ((ADVWrOffTime - WEOffTime) × (TimeParaGranularity + 1) + 0.5 × (ADVExtraDelay - WEExtraDelay)) × GPMC_FCLK(14) (7) G = ((CSWrOffTime - WEOffTime) × (TimeParaGranularity + 1) + 0.5 × (CSExtraDelay - WEExtraDelay)) × GPMC_FCLK(14) (8) H = WrCycleTime × (1 + TimeParaGranularity) × GPMC_FCLK(14) (9) I = ((OEOnTime - CSOnTime) × (TimeParaGranularity + 1) + 0.5 × (OEExtraDelay - CSExtraDelay)) × GPMC_FCLK(14) (10) K = (OEOffTime - OEOnTime) × (1 + TimeParaGranularity) × GPMC_FCLK(14) (11) L = RdCycleTime × (1 + TimeParaGranularity) × GPMC_FCLK(14) (12) M = ((CSRdOffTime - OEOffTime) × (TimeParaGranularity + 1) + 0.5 × (CSExtraDelay - OEExtraDelay)) × GPMC_FCLK(14) (13) In GPMC_CSn[x], x is equal to 0, 1, 2 or 3. (14) GPMC_FCLK is general-purpose memory controller internal functional clock period in ns. (15) 100MHz GPMC_FCLK selected - CTRLMMR_GPMC_CLKSEL[0] CLK_SEL = 1 = MAIN_PLL2_HSDIV7_CLKOUT (100/60 MHz) AM2612, AM2611, AM2611-Q1, AM2612-Q1 SPRSPA7C – SEPTEMBER 2024 – REVISED JULY 2025 www.ti.com 140 Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated Product Folder Links: AM2612 AM2611 AM2611-Q1 AM2612-Q1 |
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