SC16C650A
Universal Asynchronous Receiver/Transmitter (UART)
with 32-byte FIFO and infrared (IrDA) encoder/decoder
Rev. 04 — 20 June 2003
Product data
1. General description
The SC16C650A is a Universal Asynchronous Receiver and Transmitter (UART)
used for serial data communications. Its principal function is to convert parallel data
into serial data, and vice versa. The UART can handle serial data rates up to
3 Mbits/s.
The SC16C650A is pin compatible with the ST16C650A and it will power-up to be
functionally equivalent to the 16C450. Programming of control registers enables the
added features of the SC16C650A. Some of these added features are the 32-byte
receive and transmit FIFOs, automatic hardware or software flow control and infrared
encoding/decoding. The selectable auto-flow control feature significantly reduces
software overload and increases system efficiency while in FIFO mode by
automatically controlling serial data flow using RTS output and CTS input signals.
The SC16C650A also provides DMA mode data transfers through FIFO trigger levels
and the RXRDY and TXRDY signals. On-board status registers provide the user with
error indications, operational status, and modem interface control. System interrupts
may be tailored to meet user requirements. An internal loop-back capability allows
on-board diagnostics.
The SC16C650A operates at 5 V, 3.3 V and 2.5 V, and the industrial temperature
range, and is available in plastic DIP40, PLCC44, and LQFP48 packages.
2. Features
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5 V, 3.3 V and 2.5 V operation
Industrial temperature range
After reset, all registers are identical to the typical 16C450 register set
Capable of running with all existing generic 16C450 software
Pin compatibility with the industry-standard ST16C450/550, TL16C450/550,
PC16C450/550
Up to 3 Mbits/s transmit/receive operation at 5 V, 2 Mbits/s at 3.3 V, and
1 Mbit/s at 2.5 V
32 byte transmit FIFO
32 byte receive FIFO with error flags
Programmable auto-RTS and auto-CTS
x
In auto-CTS mode, CTS controls transmitter
x
In auto-RTS mode, RxFIFO contents and threshold control RTS
Automatic software/hardware flow control
Programmable Xon/Xoff characters
Software selectable Baud Rate Generator
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Philips Semiconductors
SC16C650A
UART with 32-byte FIFO and IrDA encoder/decoder
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Four selectable Receive and Transmit FIFO interrupt trigger levels
Standard modem interface or infrared IrDA encoder/decoder interface
Sleep mode
Standard asynchronous error and framing bits (Start, Stop, and Parity Overrun
Break)
Independent receiver clock input
Transmit, Receive, Line Status, and Data Set interrupts independently controlled
Fully programmable character formatting:
x
5-, 6-, 7-, or 8-bit characters
x
Even-, Odd-, or No-Parity formats
x
1-, 1
1
⁄
2
-, or 2-stop bit
x
Baud generation (DC to 3 Mbit/s)
False start-bit detection
Complete status reporting capabilities
3-State output TTL drive capabilities for bi-directional data bus and control bus
Line Break generation and detection
Internal diagnostic capabilities:
x
Loop-back controls for communications link fault isolation
Prioritized interrupt system controls
Modem control functions (CTS, RTS, DSR, DTR, RI, DCD).
3. Ordering information
Table 1:
Ordering information
Industrial: V
CC
= 2.5 V, 3.3 V or 5 V
±
10%; T
amb
=
−
40
°
C to +85
°
C.
Type number
SC16C650AIA44
SC16C650AIB48
SC16C650AIN40
Package
Name
PLCC44
LQFP48
DIP40
Description
plastic leaded chip carrier; 44 leads
plastic low profile quad flat package; 48 leads; body 7
×
7
×
1.4 mm
plastic dual in-line package; 40 leads (600 mil)
Version
SOT187-2
SOT313-2
SOT129-1
9397 750 11622
© Koninklijke Philips Electronics N.V. 2003. All rights reserved.
Product data
Rev. 04 — 20 June 2003
2 of 50
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