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SC16C852LIB датащи(PDF) 60 Page - NXP Semiconductors |
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SC16C852LIB датащи(HTML) 60 Page - NXP Semiconductors |
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60 / 60 page ![]() NXP Semiconductors SC16C852L 1.8 V dual UART with 128-byte FIFOs and IrDA encoder/decoder © NXP B.V. 2007. All rights reserved. For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: salesaddresses@nxp.com Date of release: 25 January 2007 Document identifier: SC16C852L_2 Please be aware that important notices concerning this document and the product(s) described herein, have been included in section ‘Legal information’. 17. Contents 1 General description . . . . . . . . . . . . . . . . . . . . . . 1 2 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 3 Ordering information . . . . . . . . . . . . . . . . . . . . . 2 4 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 3 5 Pinning information . . . . . . . . . . . . . . . . . . . . . . 5 5.1 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 5.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 7 6 Functional description . . . . . . . . . . . . . . . . . . 10 6.1 UART A-B functions . . . . . . . . . . . . . . . . . . . . 10 6.2 Extended mode (128-byte FIFO) . . . . . . . . . . 11 6.3 Internal registers . . . . . . . . . . . . . . . . . . . . . . . 11 6.4 FIFO operation . . . . . . . . . . . . . . . . . . . . . . . . 12 6.4.1 32-byte FIFO mode. . . . . . . . . . . . . . . . . . . . . 12 6.4.2 128-byte FIFO mode. . . . . . . . . . . . . . . . . . . . 12 6.5 Hardware flow control . . . . . . . . . . . . . . . . . . . 13 6.6 Software flow control . . . . . . . . . . . . . . . . . . . 13 6.7 Special character detect . . . . . . . . . . . . . . . . . 14 6.8 Interrupt priority and time-out interrupts . . . . . 14 6.9 Programmable baud rate generator . . . . . . . . 15 6.10 DMA operation . . . . . . . . . . . . . . . . . . . . . . . . 17 6.11 Loopback mode . . . . . . . . . . . . . . . . . . . . . . . 17 6.12 Sleep mode. . . . . . . . . . . . . . . . . . . . . . . . . . . 19 6.12.1 Conditions to enter Sleep mode . . . . . . . . . . . 19 6.12.2 Conditions to resume normal operation . . . . . 19 6.13 Low power feature . . . . . . . . . . . . . . . . . . . . . 19 6.14 RS-485 features . . . . . . . . . . . . . . . . . . . . . . . 20 6.14.1 Auto RS-485 RTS control . . . . . . . . . . . . . . . . 20 6.14.2 RS-485 RTS inversion . . . . . . . . . . . . . . . . . . 20 6.14.3 Auto 9-bit mode (RS-485) . . . . . . . . . . . . . . . . 20 6.14.3.1 Normal Multi-drop mode . . . . . . . . . . . . . . . . . 20 6.14.3.2 Auto address detection . . . . . . . . . . . . . . . . . . 21 7 Register descriptions . . . . . . . . . . . . . . . . . . . 21 7.1 Transmit (THR) and Receive (RHR) Holding Registers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 7.2 Interrupt Enable Register (IER) . . . . . . . . . . . 24 7.2.1 IER versus Transmit/Receive FIFO interrupt mode operation. . . . . . . . . . . . . . . . . . . . . . . . 25 7.2.2 IER versus Receive/Transmit FIFO polled mode operation. . . . . . . . . . . . . . . . . . . . . . . . 25 7.3 FIFO Control Register (FCR) . . . . . . . . . . . . . 26 7.3.1 DMA mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 7.3.1.1 Mode 0 (FCR bit 3 = 0) . . . . . . . . . . . . . . . . . . 26 7.3.1.2 Mode 1 (FCR bit 3 = 1) . . . . . . . . . . . . . . . . . . 26 7.3.2 FIFO mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 7.4 Interrupt Status Register (ISR) . . . . . . . . . . . . 28 7.5 Line Control Register (LCR) . . . . . . . . . . . . . . 29 7.6 Modem Control Register (MCR) . . . . . . . . . . . 30 7.7 Line Status Register (LSR) . . . . . . . . . . . . . . 31 7.8 Modem Status Register (MSR) . . . . . . . . . . . 32 7.9 Extra Feature Control Register (EFCR) . . . . . 33 7.10 Scratchpad Register (SPR) . . . . . . . . . . . . . . 33 7.11 Division Latch (DLL and DLM) . . . . . . . . . . . . 33 7.12 Transmit FIFO Level Count (TXLVLCNT) . . . . 33 7.13 Receive FIFO Level Count (RXLVLCNT) . . . . 33 7.14 Enhanced Feature Register (EFR). . . . . . . . . 34 7.15 Transmit Interrupt Level Register (TXINTLVL) . . . . . . . . . . . . . . . . . . . . . . . . . . 35 7.16 Receive Interrupt Level Register (RXINTLVL) . . . . . . . . . . . . . . . . . . . . . . . . . . 35 7.17 Flow Control Trigger Level High (FLWCNTH) . . . . . . . . . . . . . . . . . . . . . . . . . . 36 7.18 Flow Control Trigger Level Low (FLWCNTL) . . . . . . . . . . . . . . . . . . . . . . . . . . 36 7.19 Clock Prescaler (CLKPRES) . . . . . . . . . . . . . 36 7.20 RS-485 Turn-around Time Delay (RS485TIME) . . . . . . . . . . . . . . . . . . . . . . . . . 37 7.21 Advanced Feature Control Register 2 (AFCR2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 7.22 Advanced Feature Control Register 1 (AFCR1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 7.23 SC16C852L external reset condition and Software Reset. . . . . . . . . . . . . . . . . . . . . . . . 39 8 Limiting values . . . . . . . . . . . . . . . . . . . . . . . . 40 9 Static characteristics . . . . . . . . . . . . . . . . . . . 40 10 Dynamic characteristics . . . . . . . . . . . . . . . . . 41 10.1 Timing diagrams. . . . . . . . . . . . . . . . . . . . . . . 43 11 Package outline . . . . . . . . . . . . . . . . . . . . . . . . 53 12 Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 12.1 Introduction to soldering. . . . . . . . . . . . . . . . . 55 12.2 Wave and reflow soldering . . . . . . . . . . . . . . . 55 12.3 Wave soldering. . . . . . . . . . . . . . . . . . . . . . . . 55 12.4 Reflow soldering. . . . . . . . . . . . . . . . . . . . . . . 56 13 Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . 57 14 Revision history . . . . . . . . . . . . . . . . . . . . . . . 58 15 Legal information . . . . . . . . . . . . . . . . . . . . . . 59 15.1 Data sheet status . . . . . . . . . . . . . . . . . . . . . . 59 15.2 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 15.3 Disclaimers. . . . . . . . . . . . . . . . . . . . . . . . . . . 59 15.4 Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . 59 16 Contact information . . . . . . . . . . . . . . . . . . . . 59 17 Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 |
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