SC16C750B Datasheet, PDF (44/44 Pages) NXP Semiconductors – 5 V, 3.3 V and 2.5 V UART with 64-byte FIFOs

Philips Semiconductors
SC16C750B
5 V, 3.3 V and 2.5 V UART with 64-byte FIFOs
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
7
7.1
7.2
7.2.1
7.2.2
7.3
7.3.1
7.3.2
7.4
7.5
7.6
7.7
7.8
7.9
7.10
General description . . . . . . . . . . . . . . . . . . . . . . 1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Ordering information . . . . . . . . . . . . . . . . . . . . . 2
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Pinning information . . . . . . . . . . . . . . . . . . . . . . 4
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 5
Functional description . . . . . . . . . . . . . . . . . . . 9
Internal registers. . . . . . . . . . . . . . . . . . . . . . . . 9
FIFO operation . . . . . . . . . . . . . . . . . . . . . . . . 10
Hardware flow control . . . . . . . . . . . . . . . . . . . 11
Time-out interrupts . . . . . . . . . . . . . . . . . . . . . 11
Programmable baud rate generator . . . . . . . . 12
DMA operation . . . . . . . . . . . . . . . . . . . . . . . . 13
Sleep mode. . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Loop-back mode . . . . . . . . . . . . . . . . . . . . . . . 14
Register descriptions . . . . . . . . . . . . . . . . . . . 16
Transmit (THR) and Receive (RHR)
Holding Registers . . . . . . . . . . . . . . . . . . . . . 17
Interrupt Enable Register (IER) . . . . . . . . . . . 17
IER versus Receive FIFO interrupt
mode operation . . . . . . . . . . . . . . . . . . . . . . . 18
IER versus Receive/Transmit FIFO polled
mode operation . . . . . . . . . . . . . . . . . . . . . . . 18
FIFO Control Register (FCR) . . . . . . . . . . . . . 19
DMA mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
FIFO mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Interrupt Status Register (ISR) . . . . . . . . . . . . 21
Line Control Register (LCR) . . . . . . . . . . . . . . 22
Modem Control Register (MCR) . . . . . . . . . . . 24
Line Status Register (LSR) . . . . . . . . . . . . . . . 25
Modem Status Register (MSR). . . . . . . . . . . . 26
Scratchpad Register (SPR) . . . . . . . . . . . . . . 27
SC16C750B external reset conditions . . . . . . 27
8
Limiting values . . . . . . . . . . . . . . . . . . . . . . . . 28
9
Static characteristics . . . . . . . . . . . . . . . . . . . 28
10
Dynamic characteristics . . . . . . . . . . . . . . . . . 29
10.1
Timing diagrams. . . . . . . . . . . . . . . . . . . . . . . 30
11
Package outline . . . . . . . . . . . . . . . . . . . . . . . . 37
12
Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
12.1
Introduction to soldering surface mount
packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
12.2
Reflow soldering. . . . . . . . . . . . . . . . . . . . . . . 40
12.3
Wave soldering. . . . . . . . . . . . . . . . . . . . . . . . 40
12.4
Manual soldering . . . . . . . . . . . . . . . . . . . . . . 41
12.5
Package related soldering information . . . . . . 41
13
Revision history . . . . . . . . . . . . . . . . . . . . . . . 42
14
Data sheet status. . . . . . . . . . . . . . . . . . . . . . . 43
15
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
16
Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
© Koninklijke Philips Electronics N.V. 2004.
Printed in the U.S.A.
All rights are reserved. Reproduction in whole or in part is prohibited without the prior
written consent of the copyright owner.
The information presented in this document does not form part of any quotation or
contract, is believed to be accurate and reliable and may be changed without notice. No
liability will be accepted by the publisher for any consequence of its use. Publication
thereof does not convey nor imply any license under patent- or other industrial or
intellectual property rights.
Date of release: 13 December 2004
Document order number: 9397 750 14453