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SC16IS740 Datasheet(PDF) 63 Page - NXP Semiconductors

Part # SC16IS740
Description  Single UART with I2C-bus/SPI interface, 64 bytes of transmit and receive FIFOs
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

SC16IS740 Datasheet(HTML) 63 Page - NXP Semiconductors

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NXP Semiconductors
SC16IS740/750/760
Single UART with I2C-bus/SPI interface, 64-byte FIFOs, IrDA SIR
© NXP B.V. 2011.
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: 9 June 2011
Document identifier: SC16IS740_750_760
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
22. Contents
1
General description . . . . . . . . . . . . . . . . . . . . . . 1
2
Features and benefits . . . . . . . . . . . . . . . . . . . . 1
2.1
General features . . . . . . . . . . . . . . . . . . . . . . . . 1
2.2
I2C-bus features . . . . . . . . . . . . . . . . . . . . . . . . 2
2.3
SPI features . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
3
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
4
Ordering information . . . . . . . . . . . . . . . . . . . . . 3
5
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 4
6
Pinning information . . . . . . . . . . . . . . . . . . . . . . 6
6.1
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
6.2
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 7
7
Functional description . . . . . . . . . . . . . . . . . . . 9
7.1
Trigger levels . . . . . . . . . . . . . . . . . . . . . . . . . . 9
7.2
Hardware flow control . . . . . . . . . . . . . . . . . . . . 9
7.2.1
Auto RTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
7.2.2
Auto CTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
7.3
Software flow control . . . . . . . . . . . . . . . . . . . 11
7.3.1
RX. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
7.3.2
TX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
7.4
Reset and power-on sequence. . . . . . . . . . . . 13
7.4.1
Hardware reset, Power-On Reset (POR)
and software reset . . . . . . . . . . . . . . . . . . . . . 13
7.4.2
Power-on sequence . . . . . . . . . . . . . . . . . . . . 14
7.5
Interrupts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
7.5.1
Interrupt mode operation . . . . . . . . . . . . . . . . 16
7.5.2
Polled mode operation . . . . . . . . . . . . . . . . . . 16
7.6
Sleep mode . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7.7
Break and time-out conditions . . . . . . . . . . . . 17
7.8
Programmable baud rate generator . . . . . . . . 18
8
Register descriptions . . . . . . . . . . . . . . . . . . . 20
8.1
Receive Holding Register (RHR) . . . . . . . . . . 23
8.2
Transmit Holding Register (THR) . . . . . . . . . . 23
8.3
FIFO Control Register (FCR) . . . . . . . . . . . . . 23
8.4
Line Control Register (LCR) . . . . . . . . . . . . . . 24
8.5
Line Status Register (LSR) . . . . . . . . . . . . . . . 26
8.6
Modem Control Register (MCR) . . . . . . . . . . . 27
8.7
Modem Status Register (MSR) . . . . . . . . . . . . 28
8.8
Scratch Pad Register (SPR) . . . . . . . . . . . . . . 28
8.9
Interrupt Enable Register (IER) . . . . . . . . . . . 29
8.10
Interrupt Identification Register (IIR). . . . . . . . 30
8.11
Enhanced Features Register (EFR) . . . . . . . . 31
8.12
Division registers (DLL, DLH) . . . . . . . . . . . . . 31
8.13
Transmission Control Register (TCR). . . . . . . 32
8.14
Trigger Level Register (TLR) . . . . . . . . . . . . . 32
8.15
Transmitter FIFO Level register (TXLVL) . . . . 32
8.16
Receiver FIFO Level register (RXLVL) . . . . . . 33
8.17
Programmable I/O pins Direction
register (IODir) . . . . . . . . . . . . . . . . . . . . . . . . 33
8.18
Programmable I/O pins State Register
(IOState). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
8.19
I/O Interrupt Enable Register (IOIntEna) . . . . 33
8.20
I/O Control register (IOControl) . . . . . . . . . . . 34
8.21
Extra Features Control Register (EFCR) . . . . 35
9
RS-485 features . . . . . . . . . . . . . . . . . . . . . . . . 35
9.1
Auto RS-485 RTS control . . . . . . . . . . . . . . . 35
9.2
RS-485 RTS output inversion . . . . . . . . . . . . 36
9.3
Auto RS-485 . . . . . . . . . . . . . . . . . . . . . . . . . 36
9.3.1
Normal multidrop mode . . . . . . . . . . . . . . . . . 36
9.3.2
Auto address detection . . . . . . . . . . . . . . . . . 36
10
I2C-bus operation . . . . . . . . . . . . . . . . . . . . . . 37
10.1
Data transfers . . . . . . . . . . . . . . . . . . . . . . . . 37
10.2
Addressing and transfer formats . . . . . . . . . . 38
10.3
Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
10.4
Use of subaddresses . . . . . . . . . . . . . . . . . . . 41
11
SPI operation . . . . . . . . . . . . . . . . . . . . . . . . . . 43
12
Limiting values . . . . . . . . . . . . . . . . . . . . . . . . 44
13
Static characteristics . . . . . . . . . . . . . . . . . . . 45
14
Dynamic characteristics. . . . . . . . . . . . . . . . . 47
15
Package outline. . . . . . . . . . . . . . . . . . . . . . . . 54
16
Handling information . . . . . . . . . . . . . . . . . . . 57
17
Soldering of SMD packages . . . . . . . . . . . . . . 57
17.1
Introduction to soldering. . . . . . . . . . . . . . . . . 57
17.2
Wave and reflow soldering. . . . . . . . . . . . . . . 57
17.3
Wave soldering . . . . . . . . . . . . . . . . . . . . . . . 57
17.4
Reflow soldering . . . . . . . . . . . . . . . . . . . . . . 58
18
Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . 59
19
Revision history . . . . . . . . . . . . . . . . . . . . . . . 60
20
Legal information . . . . . . . . . . . . . . . . . . . . . . 61
20.1
Data sheet status . . . . . . . . . . . . . . . . . . . . . . 61
20.2
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
20.3
Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . 61
20.4
Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . 62
21
Contact information . . . . . . . . . . . . . . . . . . . . 62
22
Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63


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