DATASHEET
82C52
FN2950
Rev 4.00
CMOS Serial Controller Interface
November 25, 2015
The Intersil 82C52 is a high performance programmable
Features
Universal Asynchronous Receiver/Transmitter (UART) and
Single Chip UART/BRG
Baud Rate Generator (BRG) on a single chip. Utilizing the
Intersil advanced Scaled SAJI IV CMOS process, the 82C52
DC to 16MHz (1M Baud) Operation
will support data rates up to 1M baud asynchronously with a
Crystal or External Clock Input
16X clock (16MHz clock frequency).
On-Chip Baud Rate Generator - 72 Selectable Baud Rates
The on-chip Baud Rate Generator can be programmed for any
Interrupt Mode with Mask Capability
one of 72 different baud rates using a single industry standard
crystal or external frequency source. A unique pre-scale divide
Microprocessor Bus Oriented Interface
circuit has been designed to provide standard RS-232-C baud
80C86 Compatible
rates when using any one of three industry standard crystals
(1.8432MHz, 2.4576MHz, or 3.072MHz).
Single +5V Power Supply
A programmable buffered clock output (CO) is available and Low Power Operation . . . . . . . . . . . . . . . . . . . . 1mA/MHz Typ
can be programmed to provide either a buffered oscillator or
Modem Interface
16X baud rate clock for general purpose system usage.
Line Break Generation and Detection
Operating Temperature Range:
- C82C52 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0C to +70C
- I82C52. . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40C to +85C
- M82C52. . . . . . . . . . . . . . . . . . . . . . . . . . . -55C to +125C
Pb-Free Plus Anneal Available (RoHS Compliant)
Ordering Information
TEMP
1M BAUD PART MARKING RANGE (C) PACKAGE PKG. DWG. #
CP82C52 CP82C52 0 to +70 PDIP E28.6
(No longer available or supported
Recommended Replacement:
CP82C52Z)
CP82C52Z (Note) CP82C52Z 0 to +70 PDIP (Pb-Free)** E28.6
IP82C52 IP82C52 -40 to +85 PDIP E28.6
CS82C5296 CS82C52 0 to +70 PLCC (Tape & Reel) N28.45
CS82C52Z* CS82C52Z 0to +70 PLCC N28.45
(Note) (Pb-Free)
IS82C52 IS82C52 -40 to +85 PLCC N28.45
IS82C52Z* IS82C52Z -40 to +85 PLCC N28.45
(Note) (Pb-Free)
ID82C52 ID82C52 -40 to +85 CERDIP F28.6
MD82C52/B MD82C52/B -55 to +125 F28.6
8501501XA 8501501XA SMD# F28.6
MR82C52/B -55 to +125 CLCC J28.A
85015013A 85015013A SMD# J28.A
*Add96" suffix for tape and reel.
**Pb-free PDIPs can be used for through hole wave solder processing only. They are not intended for use in Reflow solder processing applications.
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.
FN2950 Rev 4.00 Page 1 of 21
November 25, 201582C52
Pinouts
82C52 (PDIP, CERDIP) 82C52 (PLCC, CLCC)
TOP VIEW TOP VIEW
RD 1 28 CSO
WR 2 27 VCC
4 3 2 1 28 27 26
D0 3 26 DR
25 SDI
D2 5
25 SDI
D1 4
D3 6 24 INTR
D2 5 24 INTR
D3 6 23 RST
D4 7 23 RST
D4 7 22 TBRE
D5 8 22
TBRE
D5 8 21 CO
D6 9 21 CO
D6 9 20 RTS
D7 10
D7 10 19 DTR 20 RTS
18
A0 11 DSR
A0 11
19 DTR
A1 12 17 CTS
12 13 14 15 16 17 18
IX 13 16 GND
OX 14 15 SDO
Block Diagram
UART
3 - 10
DATA
CONTROL AND
22
BUS
D0-D7
TBRE
STATUS
BUFFER
26
REGISTERS
DR
1
RD
2 READ/WRITE
WR
CONTROL
11
A0
LOGIC
TRANSMITTER TRANSMITTER
12
15
A1
SDO
BUFFER REGISTER
REGISTER P S
28
CSO
13
PROGRAM-
IX
14
MABLE
OX
BOUD RATE
21
CO GENERATOR
RECEIVER RECEIVER
25
BUFFER REGISTER
SDI
REGISTER P S
23
RST
CONTROL
18
LOGIC DSR
24
INTR MODEM
17
CTS
CONTROL AND
19
STATUS DTR
REGISTERS
20
RTS
FN2950 Rev 4.00 Page 2 of 21
November 25, 2015
INTERNAL DATA BUS
A1
D1
D0
IX
OX
WR
SDO
RD
GND
CSO
CTS VCC
DSR
DR