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). 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). 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.


  • Single Chip UART/BRG
  • DC to 16MHz (1M Baud) Operation
  • Crystal or External Clock Input
  • On-Chip Baud Rate Generator - 72 Selectable Baud Rates
  • Interrupt Mode with Mask Capability
  • Microprocessor Bus Oriented Interface
  • 80C86 Compatible
  • Single +5V Power Supply
  • Low Power Operation 1mA/MHz Typ
  • Modem Interface
  • Line Break Generation and Detection
  • Operating Temperature Range:
  • C82C52 0°C to +70°C
  • I82C52 -40°C to +85°C
  • M82C52 -55°C to +125°C
  • Pb-Free Plus Anneal Available (RoHS Compliant)




Design & Development