Description

Electronic Component Model: P82C431 is a Universal Peripheral Interface CHMOS 8-Bit Slave Microcontroller from Intel's CHMOS III-E process. This product is pin, software, and architecturally compatible with Intel's NMOS UPI family.

Specifications and features

• 8-Bit CPU plus ROM/OTP EPROM, RAM, /O, Timer/Counter and Clock in a Single Package
• 4096 x 8 ROM/OTP, 256 x 8 RAM 8-Bit Timer/Counter, 18 Programmable I/O Pins
• Hardware A20 Gate Support
• Low Voltage Operation with the UPI-L42 (Full 3.3V Support)
• DMA, Interrupt, or Polled Operation Supported
• One 8-Bit Status and Two Data Registers for Asynchronous Slave-to-Master Interface
• Sync Mode Available
• Over 90 Instructions: 70% Single Byte
• Quick Pulse Programming Algorithm - Fast OTP Programming

Application Scenarios

The UPI-C42 is an enhanced CHMOS version of the industry standard Intel UPI-42 family. It can function as a slave peripheral controller in the MCS Modules and iAPX family, as well as other 8-, 16-, and 32-bit systems. The UPI-C42 can be used in electronic devices that require a universal peripheral interface microcontroller.

Comparison

• Architecturally and software compatible with the Intel NMOS UPI family
• Has all of the same features of the NMOS family plus a larger user programmable memory array (4K)
• Available in ROM and One-Time Programmable EPROM (OTP)
• Hardware A20 gate support
• Low power consumption inherent to a CHMOS product

• Not compatible with all Microprocessor families