SC16C652 datasheet(41/41 Pages) PHILIPS

41 / 41 page

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: 20 June 2003

Document order number: 9397 750 11634

Contents

Philips Semiconductors

SC16C652

Dual UART with 32 bytes of transmit and receive FIFOs

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Ordering information . . . . . . . . . . . . . . . . . . . . . 2

Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Pinning information . . . . . . . . . . . . . . . . . . . . . . 4

5.1

Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

5.2

Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4

Functional description . . . . . . . . . . . . . . . . . . . 7

6.1

UART A-B functions . . . . . . . . . . . . . . . . . . . . . 7

6.2

Internal registers . . . . . . . . . . . . . . . . . . . . . . . . 8

6.3

FIFO operation . . . . . . . . . . . . . . . . . . . . . . . . . 8

6.4

Hardware ﬂow control . . . . . . . . . . . . . . . . . . . . 9

6.5

Software ﬂow control . . . . . . . . . . . . . . . . . . . . 9

6.6

Special feature software ﬂow control . . . . . . . 10

6.7

Hardware/software and time-out interrupts. . . 10

6.8

Programmable baud rate generator . . . . . . . . 11

6.9

DMA operation . . . . . . . . . . . . . . . . . . . . . . . . 12

6.10

Loop-back mode . . . . . . . . . . . . . . . . . . . . . . . 12

7.1

Transmit (THR) and Receive (RHR)

Holding Registers . . . . . . . . . . . . . . . . . . . . . 15

7.2

Interrupt Enable Register (IER) . . . . . . . . . . . 15

7.2.1

IER versus Transmit/Receive FIFO interrupt

mode operation . . . . . . . . . . . . . . . . . . . . . . . 16

7.2.2

IER versus Receive/Transmit FIFO polled

mode operation . . . . . . . . . . . . . . . . . . . . . . . 17

7.3

FIFO Control Register (FCR) . . . . . . . . . . . . . 17

7.3.1

DMA mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

7.3.2

FIFO mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

7.4

Interrupt Status Register (ISR) . . . . . . . . . . . . 20

7.5

Line Control Register (LCR) . . . . . . . . . . . . . . 21

7.6

Modem Control Register (MCR) . . . . . . . . . . . 22

7.7

Line Status Register (LSR) . . . . . . . . . . . . . . . 23

7.8

Modem Status Register (MSR). . . . . . . . . . . . 24

7.9

Scratchpad Register (SPR) . . . . . . . . . . . . . . 25

7.10

Enhanced Feature Register (EFR) . . . . . . . . . 25

7.11

SC16C652 external reset condition . . . . . . . . 27

Limiting values . . . . . . . . . . . . . . . . . . . . . . . . 27

Static characteristics . . . . . . . . . . . . . . . . . . . 28

Dynamic characteristics . . . . . . . . . . . . . . . . . 29

10.1

Timing diagrams. . . . . . . . . . . . . . . . . . . . . . . 30

Package outline . . . . . . . . . . . . . . . . . . . . . . . . 36

Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

12.1

Introduction to soldering surface mount

packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

12.2

Reﬂow soldering. . . . . . . . . . . . . . . . . . . . . . . 37

12.3

Wave soldering. . . . . . . . . . . . . . . . . . . . . . . . 37

12.4

Manual soldering . . . . . . . . . . . . . . . . . . . . . . 38

12.5

Package related soldering information . . . . . . 38

Revision history . . . . . . . . . . . . . . . . . . . . . . . 39

Data sheet status. . . . . . . . . . . . . . . . . . . . . . . 40

Deﬁnitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

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