UPI-41AH/42AH
UNIVERSAL PERIPHERAL INTERFACE
8-BIT SLAVE MICROCONTROLLER
Y
Y
Y
UPI-41: 6 MHz; UPI-42: 12.5 MHz
Fully Compatible with all Intel and Most
Other Microprocessor Families
Pin, Software and Architecturally
Compatible with all UPI-41 and UPI-42
Products
Y
Interchangeable ROM and OTP EPROM
Versions
Y
Y
Y
Y
Y
Y
8-Bit CPU plus ROM/OTP EPROM, RAM,
I/O, Timer/Counter and Clock in a
Single Package
Expandable I/O
Sync Mode Available
Over 90 Instructions: 70% Single Byte
2048 x 8 ROM/OTP, 256 x 8 RAM on
UPI-42, 1024 x 8 ROM/OTP, 128 x 8
RAM on UPI-41, 8-Bit Timer/Counter, 18
Programmable I/O Pins
Available in EXPRESS
Ð Standard Temperature Range
Y
Y
int ligent Programming Algorithm
e
Ð Fast OTP Programming
Y
Y
One 8-Bit Status and Two Data
Registers for Asynchronous Slave-to-
Master Interface
Available in 40-Lead Plastic and 44-
Lead Plastic Leaded Chip Carrier
Packages
Ý
(See Packaging Spec., Order 240800-001)
Package Type P and N
DMA, Interrupt, or Polled Operation
Supported
The Intel UPI-41AH and UPI-42AH are general-purpose Universal Peripheral Interfaces that allow the designer
to develop customized solutions for peripheral device control.
They are essentially ‘‘slave’’ microcontrollers, or microcontrollers 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). All UPI-41AH and UPI-42AH devices are fully pin compatible for easy transition from prototype to
production level designs.
210393–2
Figure 1. DIP Pin Configuration
210393–3
Figure 2. PLCC Pin Configuration
November 1994
Order Number: 210393-008