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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LPC1547JBD48 датащи(PDF) 75 Page - NXP Semiconductors |
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LPC1547JBD48 датащи(HTML) 75 Page - NXP Semiconductors |
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75 / 99 page  LPC15XX All information provided in this document is subject to legal disclaimers. © NXP B.V. 2014. All rights reserved. Product data sheet Rev. 1 — 19 February 2014 75 of 99 NXP Semiconductors LPC15xx 32-bit ARM Cortex-M3 microcontroller 12.7 USART interface The maximum USART bit rate is 15 Mbit/s in synchronous mode master mode and 18 Mbit/s in synchronous slave mode. Remark: USART functions can be assigned to all digital pins. The characteristics are valid for all digital pins except the open-drain pins PIO0_22 and PIO0_23. Table 21. USART dynamic characteristics Tamb = 40 C to 105 C; 2.4 V <= VDD <= 3.6 V; CL = 10 pF; input slew = 10 ns. Simulated parameters sampled at the 50 % level of the falling or rising edge; values guaranteed by design. Symbol Parameter Min Max Unit USART master (in synchronous mode) tsu(D) data input set-up time 33 - ns th(D) data input hold time 0 - ns tv(Q) data output valid time - 7 ns th(Q) data output hold time 2 - ns USART slave (in synchronous mode) tsu(D) data input set-up time 13 - ns th(D) data input hold time 0 - ns tv(Q) data output valid time - 28 ns th(Q) data output hold time 12 - ns In master mode, Tcy(clk) = U_PCLK/BRGVAL. See the LPC15xx User manual UM10736. Fig 38. USART timing |
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