SC16C650AIN40 datasheet(9/50 Pages) PHILIPS

Part #	SC16C650AIN40

Description	Universal Asynchronous Receiver/Transmitter (UART) with 32-byte FIFO and infrared (IrDA) encoder/decoder

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Manufacturer	PHILIPS [NXP Semiconductors]

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Philips Semiconductors

SC16C650A

UART with 32-byte FIFO and IrDA encoder/decoder

Product data

Rev. 04 — 20 June 2003

9 of 50

9397 750 11622

[1]

In sleep mode, XTAL2 is left ﬂoating.

6.

Functional description

The SC16C650A provides serial asynchronous receive data synchronization,

parallel-to-serial and serial-to-parallel data conversions for both the transmitter and

receiver sections. These functions are necessary for converting the serial data

stream into parallel data that is required with digital data systems. Synchronization for

the serial data stream is accomplished by adding start and stop bits to the transmit

data to form a data character (character orientated protocol). Data integrity is insured

by attaching a parity bit to the data character. The parity bit is checked by the receiver

for any transmission bit errors. The SC16C650A is fabricated with an advanced

CMOS process to achieve low drain power and high speed requirements.

The SC16C650A is an upward solution that provides 32 bytes of transmit and receive

FIFO memory, instead of none in the 16C450, or 16 in the 16C550. The SC16C650A

is designed to work with high speed modems and shared network environments that

require fast data processing time. Increased performance is realized in the

SC16C650A by the larger transmit and receive FIFOs. This allows the external

processor to handle more networking tasks within a given time. In addition, the four

selectable levels of FIFO trigger interrupt and automatic hardware/software ﬂow

control is uniquely provided for maximum data throughput performance, especially

when operating in a multi-channel environment. The combination of the above greatly

reduces the bandwidth requirement of the external controlling CPU, increases

performance, and reduces power consumption.

The SC16C650A is capable of operation up to 3 Mbits/s with a 48 MHz external clock

input (at 5 V).

The rich feature set of the SC16C650A is available through internal registers.

Automatic hardware/software ﬂow control, selectable transmit and receive FIFO

trigger level, selectable TX and RX baud rates, modem interface controls, and a sleep

mode are some of these features.

IOW, IOW

20, 21

16, 17

18, 19

I

Write inputs. When either IOW or IOW is active (LOW or HIGH,

respectively) and while the UART is selected, the CPU is allowed to

write control words or data into a selected UART register. Only one of

these inputs is required to transfer data during a write operation; the

other input should be tied to its inactive level (i.e., IOW tied LOW or

IOW tied HIGH).

XTAL1

18

14

16

I

Crystal connection or External clock input.

XTAL2[1]

19

15

17

O

Crystal connection or the inversion of XTAL1 if XTAL1 is driven.

Table 2:

Pin description…continued

Symbol

Type

Description

PLCC44 LQFP48 DIP40

Similar Part No. - SC16C650AIN40

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NXP Semiconductors	SC16C650B	881Kb / 51P	5 V, 3.3 V and 2.5 V UART with 32-byte FIFOs and infrared (IrDA) encoder/decoder Rev. 03-10 December 2004
	SC16C650B	251Kb / 48P	5 V, 3.3 V and 2.5 V UART with 32-byte FIFOs and infrared (IrDA) encoder/decoder Rev. 04-14 September 2009
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	SC16C650BIB48	881Kb / 51P	5 V, 3.3 V and 2.5 V UART with 32-byte FIFOs and infrared (IrDA) encoder/decoder Rev. 03-10 December 2004

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Similar Description - SC16C650AIN40

Manufacturer	Part #	Datasheet	Description
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NXP Semiconductors	SC16C750	598Kb / 45P	Universal Asynchronous Receiver/Transmitter (UART) with 64-byte FIFO Rev. 04-20 June 2003
IMP, Inc	IMP16C552	783Kb / 34P	Dual Universal Asynchronous Receiver/Transmitter (UART) with 16-BYTE FIFO & Parallel Printer Port
NXP Semiconductors	SC16C650B	881Kb / 51P	5 V, 3.3 V and 2.5 V UART with 32-byte FIFOs and infrared (IrDA) encoder/decoder Rev. 03-10 December 2004
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