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SC16C751B Datasheet(PDF) 32 Page - NXP Semiconductors

Part # SC16C751B
Description  5 V, 3.3 V and 2.5 V UART with 64-byte FIFOs
PDF  32 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

SC16C751B Datasheet(HTML) 32 Page - NXP Semiconductors

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NXP Semiconductors
SC16C751B
5 V, 3.3 V and 2.5 V UART with 64-byte FIFOs
© NXP B.V. 2008.
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: 10 October 2008
Document identifier: SC16C751B_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 . . . . . . . . . . . . . . . . . . . . . . 3
5.1
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
5.2
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4
6
Functional description . . . . . . . . . . . . . . . . . . . 5
6.1
Internal registers . . . . . . . . . . . . . . . . . . . . . . . . 5
6.2
FIFO operation . . . . . . . . . . . . . . . . . . . . . . . . . 6
6.3
Hardware flow control . . . . . . . . . . . . . . . . . . . . 7
6.4
Time-out interrupts . . . . . . . . . . . . . . . . . . . . . . 7
6.5
Programmable baud rate generator . . . . . . . . . 7
6.6
Special software initialization sequence . . . . . . 9
6.7
Sleep mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6.8
Low power mode . . . . . . . . . . . . . . . . . . . . . . . 9
6.9
Loopback mode . . . . . . . . . . . . . . . . . . . . . . . . 9
7
Register descriptions . . . . . . . . . . . . . . . . . . . 11
7.1
Transmit and Receive Holding Registers
(THR and RHR) . . . . . . . . . . . . . . . . . . . . . . . 12
7.2
Interrupt Enable Register (IER) . . . . . . . . . . . 12
7.2.1
IER versus Receive FIFO interrupt mode
operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
7.2.2
IER versus Receive/Transmit FIFO
polled mode operation . . . . . . . . . . . . . . . . . . 13
7.3
FIFO Control Register (FCR) . . . . . . . . . . . . . 14
7.3.1
FIFO mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
7.4
Interrupt Status Register (ISR) . . . . . . . . . . . . 15
7.5
Line Control Register (LCR) . . . . . . . . . . . . . . 16
7.6
Modem Control Register (MCR) . . . . . . . . . . . 18
7.7
Line Status Register (LSR) . . . . . . . . . . . . . . . 19
7.8
Modem Status Register (MSR). . . . . . . . . . . . 20
7.9
Scratchpad Register (SPR) . . . . . . . . . . . . . . 20
7.10
SC16C751B external reset conditions . . . . . . 20
8
Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . 21
9
Static characteristics. . . . . . . . . . . . . . . . . . . . 21
10
Dynamic characteristics . . . . . . . . . . . . . . . . . 22
10.1
Timing diagrams . . . . . . . . . . . . . . . . . . . . . . . 23
11
Package outline . . . . . . . . . . . . . . . . . . . . . . . . 26
12
Soldering of SMD packages . . . . . . . . . . . . . . 27
12.1
Introduction to soldering . . . . . . . . . . . . . . . . . 27
12.2
Wave and reflow soldering . . . . . . . . . . . . . . . 27
12.3
Wave soldering . . . . . . . . . . . . . . . . . . . . . . . . 27
12.4
Reflow soldering . . . . . . . . . . . . . . . . . . . . . . . 28
13
Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . 29
14
Revision history . . . . . . . . . . . . . . . . . . . . . . . 30
15
Legal information . . . . . . . . . . . . . . . . . . . . . . 31
15.1
Data sheet status . . . . . . . . . . . . . . . . . . . . . . 31
15.2
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
15.3
Disclaimers. . . . . . . . . . . . . . . . . . . . . . . . . . . 31
15.4
Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . 31
16
Contact information . . . . . . . . . . . . . . . . . . . . 31
17
Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32



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