UPI-C42 UPI-L42
UNIVERSAL PERIPHERAL INTERFACE
CHMOS 8-BIT SLAVE MICROCONTROLLER
Y
Y
Y
Y
Y
Y
Pin Software and Architecturally
Compatible with all UPI-41 and UPI-42
Products
Low Voltage Operation with the UPI-
L42
Full 3 3V Support
Hardware A20 Gate Support
Suspend Power Down Mode
Security Bit Code Protection Support
8-Bit CPU plus ROM OTP EPROM RAM
I 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
DMA Interrupt or Polled Operation
Supported
Y
Y
Y
Y
Y
Y
Y
Y
Y
One 8-Bit Status and Two Data
Registers for Asynchronous Slave-to-
Master Interface
Fully Compatible with all Intel and Most
Other Microprocessor Families
Interchangeable ROM and OTP EPROM
Versions
Expandable I O
Sync Mode Available
Over 90 Instructions 70% Single Byte
Quick Pulse Programming Algorithm
Fast OTP Programming
Available in 40-Lead Plastic 44-Lead
Plastic Leaded Chip Carrier and
44-Lead Quad Flat Pack Packages
(See Packaging Spec Order
and S)
240800 Package Type P N
Y
The UPI-C42 is an enhanced CHMOS version of the industry standard Intel UPI-42 family It is fabricated on
Intel’s CHMOS III-E process The UPI-C42 is pin software and architecturally compatible with the NMOS UPI
family The UPI-C42 has all of the same features of the NMOS family plus a larger user programmable memory
array (4K) hardware A20 gate support and lower power consumption inherent to a CHMOS product
The UPI-L42 offers the same functionality and socket compatibility as the UPI-C42 as well as providing low
voltage 3 3V operation
The UPI-C42 is essentially a ‘‘slave’’ microcontroller or a microcontroller with a slave interface included on the
chip Interface registers are included to enable the UPI device to function as a slave peripheral controller in the
MCS Modules and iAPX family as well as other 8- 16- and 32-bit systems
To allow full user flexibility the program memory is available in ROM and One-Time Programmable EPROM
(OTP)
290414– 1
Figure 1 DIP Pin
Configuration
290414 –2
290414 –3
Figure 2 PLCC Pin Configuration
Figure 3 QFP Pin Configuration
Other brands and names are the property of their respective owners
Information in this document is provided in connection with Intel products Intel assumes no liability whatsoever including infringement of any patent or
copyright for sale and use of Intel products except as provided in Intel’s Terms and Conditions of Sale for such products Intel retains the right to make
changes to these specifications at any time without notice Microcomputer Products may have minor variations to this specification known as errata
COPYRIGHT
INTEL CORPORATION 1996
December 1995
Order Number 290414-003
INTEL [ INTEL CORPORATION ]
