82C50A_06 Datasheet, PDF (1/25 Pages) Intersil Corporation – CMOS Asynchronous

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Data Sheet
August 24, 2006
82C50A
FN2958.5
CMOS Asynchronous
The 82C50A Asynchronous Communication Element
(ACE) is a high performance programmable Universal
Asynchronous Receiver/Transmitter (UART) and Baud
Rate Generator (BRG) on a single chip. Using Intersil’s
advanced Scaled SAJI IV CMOS Process, the ACE will
support data rates from DC to 625K baud (0-10MHz clock).
The ACE’s receiver circuitry converts start, data, stop, and
parity bits into a parallel data word. The transmitter circuitry
converts a parallel data word into serial form and appends
the start, parity, and stop bits. The word length is
programmable to 5, 6, 7, or 8 data bits. Stop bit selection
provides a choice of 1,1.5, or 2 stop bits.
The Baud Rate Generator divides the clock by a divisor
programmable from 1 to 2¹⁶-1 to provide standard RS-
232C baud rates when using any one of three industry
standard baud rate crystals (1.8432MHz, 2.4576MHz, or
3.072MHz). A programmable buffered clock output
(BAUDOUT) provides either a buffered oscillator or 16X (16
times the data rate) baud rate clock for general purpose
system use.
To meet the system requirements of a CPU interfacing to
an asynchronous channel, the modem control signals RTS,
CTS, DSR, DTR, RI, DCD are provided. Inputs and outputs
have been designed with full TTL/CMOS compatibility in
order to facilitate mixed TTL/NMOS/CMOS system design.
Features
• Single Chip UART/BRG
• DC to 625K Baud (DC to 10MHz Clock)
• Crystal or External Clock Input
• On Chip Baud Rate Generator 1 to 65535 Divisor
Generates 16X Clock
• Prioritized Interrupt Mode
• Fully TTL/CMOS Compatible
• Microprocessor Bus Oriented Interface
• 80C86/80C88 Compatible
• Scaled SAJI IV CMOS Process
• Low Power - 1mA/MHz Typical
• Modem Interface
• Line Break Generation and Detection
• Loopback and Echo Modes
• Doubled Buffered Transmitter and Receiver
• Single 5V Supply
• Pb-Free Plus Anneal Available (RoHS Compliant)
Ordering Information
625K BAUD
PART
MARKING
TEMP
RANGE
(°C)
PKG.
PACKAGE DWG. #
CP82C50A-5 CP82C50A-5 0 to +70 40 Ld PDIP E40.6
CP82C50A-5Z CP82C50A-5Z 0 to +70 40 Ld PDIP E40.6
(Note)
(Pb-free)
CS82C50A-596 CS82C50A-5
0 to +70 44 Ld PLCC N44.65
Tape and
Reel
CS82C50A-5Z CS82C50A-5Z 0 to +70 44 Ld PLCC N44.65
(Note)
(Pb-free)
CS82C50A-5Z96 CS82C50A-5Z
(Note)
0 to +70
44 Ld PLCC
Tape and
Reel
(Pb-free)
N44.65
IS82C50A-5
IS82C50A-5 -40 to +85 44 Ld PLCC N44.65
IS82C50A-5Z
(Note)
IS82C50A-5Z -40 to +85 44 Ld PLCC N44.65
(Pb-free)
NOTE: Intersil Pb-free plus anneal products employ special Pb-free
material sets; molding compounds/die attach materials and 100% matte
tin plate termination finish, which are RoHS compliant and compatible
with both SnPb and Pb-free soldering operations. Intersil Pb-free
products are MSL classified at Pb-free peak reflow temperatures that
meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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