sc16c751b NXP Semiconductors, sc16c751b Datasheet - Page 32

• Manufacturer Part Number: sc16c751b
• Description: 5 V, 3.3 V And 2.5 V Uart With 64-byte Fifos
• Manufacturer: NXP Semiconductors

NXP Semiconductors
17. Contents
1
2
3
4
5
5.1
5.2
6
6.1
6.2
6.3
6.4
6.5
6.6
6.7
6.8
6.9
7
7.1
7.2
7.2.1
7.2.2
7.3
7.3.1
7.4
7.5
7.6
7.7
7.8
7.9
7.10
8
9
10
10.1
11
12
12.1
12.2
12.3
12.4
13
General description . . . . . . . . . . . . . . . . . . . . . . 1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Ordering information . . . . . . . . . . . . . . . . . . . . . 2
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Pinning information . . . . . . . . . . . . . . . . . . . . . . 3
Functional description . . . . . . . . . . . . . . . . . . . 5
Register descriptions . . . . . . . . . . . . . . . . . . . 11
Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . 21
Static characteristics. . . . . . . . . . . . . . . . . . . . 21
Dynamic characteristics . . . . . . . . . . . . . . . . . 22
Package outline . . . . . . . . . . . . . . . . . . . . . . . . 26
Soldering of SMD packages . . . . . . . . . . . . . . 27
Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4
Internal registers. . . . . . . . . . . . . . . . . . . . . . . . 5
FIFO operation . . . . . . . . . . . . . . . . . . . . . . . . . 6
Hardware flow control . . . . . . . . . . . . . . . . . . . . 7
Time-out interrupts . . . . . . . . . . . . . . . . . . . . . . 7
Programmable baud rate generator . . . . . . . . . 7
Special software initialization sequence . . . . . . 9
Sleep mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Low power mode . . . . . . . . . . . . . . . . . . . . . . . 9
Loopback mode . . . . . . . . . . . . . . . . . . . . . . . . 9
Transmit and Receive Holding Registers
(THR and RHR) . . . . . . . . . . . . . . . . . . . . . . . 12
Interrupt Enable Register (IER) . . . . . . . . . . . 12
IER versus Receive FIFO interrupt mode
operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
IER versus Receive/Transmit FIFO
polled mode operation . . . . . . . . . . . . . . . . . . 13
FIFO Control Register (FCR) . . . . . . . . . . . . . 14
FIFO mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Interrupt Status Register (ISR) . . . . . . . . . . . . 15
Line Control Register (LCR) . . . . . . . . . . . . . . 16
Modem Control Register (MCR) . . . . . . . . . . . 18
Line Status Register (LSR) . . . . . . . . . . . . . . . 19
Modem Status Register (MSR). . . . . . . . . . . . 20
Scratchpad Register (SPR) . . . . . . . . . . . . . . 20
SC16C751B external reset conditions . . . . . . 20
Timing diagrams . . . . . . . . . . . . . . . . . . . . . . . 23
Introduction to soldering . . . . . . . . . . . . . . . . . 27
Wave and reflow soldering . . . . . . . . . . . . . . . 27
Wave soldering . . . . . . . . . . . . . . . . . . . . . . . . 27
Reflow soldering . . . . . . . . . . . . . . . . . . . . . . . 28
14
15
15.1
15.2
15.3
15.4
16
17
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
© NXP B.V. 2008.
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: [e-mail]
5 V, 3.3 V and 2.5 V UART with 64-byte FIFOs
Revision history . . . . . . . . . . . . . . . . . . . . . . . 30
Legal information . . . . . . . . . . . . . . . . . . . . . . 31
Contact information . . . . . . . . . . . . . . . . . . . . 31
Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Data sheet status . . . . . . . . . . . . . . . . . . . . . . 31
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Disclaimers. . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . 31
SC16C751B
Document identifier: SC16C751B_2
Date of release: 10 October 2008
All rights reserved.