82C52
CMOS Serial Controller Interface
March 1997
Features
Description
• Single Chip UART/BRG
The Intersil 82C52 is a high performance programmable
Universal Asynchronous Receiver/Transmitter (UART) and
Baud Rate Generator (BRG) on a single chip. Utilizing the
Intersil advanced Scaled SAJI IV CMOS process, the 82C52
will support data rates up to 1M baud asynchronously with a
16X clock (16MHz clock frequency).
• DC to 16MHz (1M Baud) Operation
• Crystal or External Clock Input
• On-Chip Baud Rate Generator - 72 Selectable Baud
Rates
The on-chip Baud Rate Generator can be programmed for
any one of 72 different baud rates using a single industry
standard crystal or external frequency source. A unique pre-
scale divide circuit has been designed to provide standard
RS-232-C baud rates when using any one of three industry
standard crystals (1.8432MHz, 2.4576MHz, or 3.072MHz).
• Interrupt Mode with Mask Capability
• Microprocessor Bus Oriented Interface
• 80C86 Compatible
• Single +5V Power Supply
• Low Power Operation . . . . . . . . . . . . . . . 1mA/MHz Typ
• Modem Interface
A programmable buffered clock output (CO) is available and
can be programmed to provide either a buffered oscillator or
16X baud rate clock for general purpose system usage.
• Line Break Generation and Detection
• Operating Temperature Range:
Ordering Information
o
o
- C82C52 . . . . . . . . . . . . . . . . . . . . . . . . . .0 C to +70 C
TEMPERATURE
o
o
PACKAGE
RANGE
1M BAUD
CP82C52
IP82C52
PKG. NO.
E28.6
- I82C52 . . . . . . . . . . . . . . . . . . . . . . . . . -40 C to +85 C
o
o
o
o
PDIP
0 C to +70 C
- M82C52 . . . . . . . . . . . . . . . . . . . . . . . -55 C to +125 C
o
o
-40 C to +85 C
E28.6
o
o
PLCC
0 C to +70 C
CS82C52
IS82C52
N28.45
N28.45
F28.6
o
o
-40 C to +85 C
o
o
CERDIP
0 C to +70 C
CD82C52
ID82C52
o
o
-40 C to +85 C
F28.6
o
o
-55 C to +125 C MD82C52/B
F28.6
SMD#
CLCC
SMD#
8501501XA
F28.6
o
o
-55 C to +125 C MR82C52/B
85015013A
J28.A
J28.A
Pinouts
82C52 (PDIP, CERDIP)
TOP VIEW
82C52 (PLCC, CLCC)
TOP VIEW
RD
WR
D0
D1
D2
D3
D4
D5
D6
1
2
3
4
5
6
7
8
9
28
CSO
27 VCC
26 DR
4
3
2
1
28 27 26
25
SDI
24 INTR
23 RST
D2
D3
D4
D5
D6
5
6
7
8
9
25 SDI
24 INTR
23 RST
22 TBRE
21 CO
22
TBRE
21 CO
20 RTS
19 DTR
20
RTS
D7 10
A0 11
D7 10
A0 11
A1 12
IX 13
19 DTR
18 DSR
17 CTS
16 GND
15 SDO
12 13 14 15 16 17 18
OX 14
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
File Number 2950.1
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