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LPC4350 датащи(PDF) 117 Page - NXP Semiconductors |
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LPC4350 датащи(HTML) 117 Page - NXP Semiconductors |
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117 / 145 page ![]() LPC4350_30_20_10 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved. Objective data sheet Rev. 2.1 — 23 September 2011 117 of 145 NXP Semiconductors LPC4350/30/20/10 32-bit ARM Cortex-M4/M0 microcontroller [1] Output drivers can drive a load 25 pF accommodating over 12 inch of PCB trace and the input capacitance of the receiving device. [2] Timing values are given from the point at which the clock signal waveform crosses 1.4 V to the valid input or output level. 11.10 SD/MMC clk clock duty cycle [1] <tbd> <tbd> % tsu set-up time for ENET_RXDn, ENET_RX_ER, ENET_RX_DV [1][2] <tbd> - ns th hold time for ENET_RXDn, ENET_RX_ER, ENET_RX_DV [1][2] <tbd> - ns Fig 37. Ethernet timing Table 20. Dynamic characteristics: Ethernet Tamb = 40 C to 85 C, VDD(REG)(3V3) = <tbd>. Symbol Parameter Conditions Min Max Unit 002aag210 th tsu ENET_RX_CLK ENET_TX_CLK ENET_RXD[n] ENET_RX_DV ENET_RX_ER ENET_TXD[n] ENET_TX_EN ENET_TX_ER Table 21. Dynamic characteristics: SD/MMC Tamb = 40 C to 85 C, VDD(REG)(3V3) = 3.0 V to 3.6 V. Values guaranteed by design. Symbol Parameter Conditions Min Max Unit fclk clock frequency on pin SD_CLK; data transfer mode - 25 MHz on pin SD_CLK; identification mode - 25 MHz tsu(D) data input set-up time on pins SD_CMD, SD_DATn as inputs 6- ns th(D) data input hold time on pins SD_CMD, SD_DATn as inputs 6- ns td(QV) data output valid delay time on pins SD_CMD, SD_DATn as outputs -23 ns th(Q) data output hold time on pins SD_CMD, SD_DATn as outputs 3.5 - ns |
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