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AM261...ZNC 数据表(PDF) 182 Page - Texas Instruments |
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AM261...ZNC 数据表(HTML) 182 Page - Texas Instruments |
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182 / 218 page  6.11.5.16 Universal Asynchronous Receiver/Transmitter (UART) For more details about features and additional description information on the device Universal Asynchronous Receiver Transmitter, see the corresponding subsections within Signal Descriptions and Detailed Description sections. For more information, see Universal Asynchronous Receiver/Transmitter (UART) section in the device TRM. 6.11.5.16.1 UART Timing Conditions PARAMETER MIN MAX UNIT INPUT CONDITIONS SRI Input Slew Rate 0.5 5 V/ns OUTPUT CONDITIONS CL Output Load Capacitance 1 30 pF PCB CONNECTIVITY REQUIREMENTS td (Trace Mismatch Delay) Propagation delay mismatch across all traces 100 ps 6.11.5.16.2 UART Timing Requirements NO. PARAMETER DESCRIPTION MIN MAX UNIT 4 tw(RX) Pulse width, receive data bit, high or low 0.95U(1) 1.05U(1) ns 5 tw(CTS) Pulse width, receive start bit, high or low 0.95U(1) ns (1) U = UART baud time = 1 / Programmed baud rate. 6.11.5.16.3 UART Switching Characteristics NO. PARAMETER DESCRIPTION MODE MIN MAX UNIT f(baud) Programmable baud rate 15pF 12 Mbps 30pF 0.115 2 tw(TX) Pulse width, transmit data bit, high or low U(1) – 2.2 U(1) + 2.2 ns 3 tw(RTS) Pulse width, transmit start bit, high or low U(1) – 2.2 ns 1 td(CTS-TX) Delay time, receive CTS bit to transmit data 30 ns (1) U = UART baud time = 1 / Programmed baud rate. Figure 6-86. UART Timing Requirements and Switching Characteristics AM2612, AM2611, AM2611-Q1, AM2612-Q1 SPRSPA7C – SEPTEMBER 2024 – REVISED JULY 2025 www.ti.com 182 Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated Product Folder Links: AM2612 AM2611 AM2611-Q1 AM2612-Q1 |
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