D8741AD IC EPROM DIP 40-pin

D8741AD IC EPROM DIP 40-pin

The D8741AD is a programmable peripheral interface controller, designed as a complete, self-sufficient 8-bit single-chip microcomputer. It features its own CPU, UV-EPROM program memory, and RAM, allowing it to operate as an intelligent slave device. Its primary role is to offload input/output (I/O) handling and peripheral control tasks from a master CPU, thereby increasing the overall efficiency of a microprocessor-based system.

This IC is engineered for seamless integration into master/slave configurations with various 8-bit and 16-bit microprocessors like the 8048, 8085A, and 8086. It communicates with the host processor through an asynchronous interface that includes a bidirectional data bus, status registers, and control lines (RD, WR). This structure allows for flexible data exchange via interrupt, DMA, or polled operation methods.

At its core, the D8741AD contains 1K bytes of user-programmable UV-EPROM and 64 bytes of RAM. It is equipped with 18 I/O lines organized into two ports, an 8-bit timer/counter, and a clock circuit. The use of UV-EPROM for program memory provides significant design flexibility, allowing for program development and revisions before finalization.

Features:

• Complete single-chip microcomputer.
• 8-bit CPU.
• 1K x 8 UV-EPROM program memory.
• 64 x 8 RAM data memory.
• 8-bit timer/counter.
• 18 I/O lines.
• 8048, 8080A, 8085A, 8086-compatible bus structure.
• Asynchronous slave-to-master interface.
• Interrupt, DMA, or polled operation.
• Expandable I/O.
• Single +5V power supply.

Specifications:

Pinout Diagram:

Applications:

• Peripheral Interface Controller.
• Intelligent Slave Microcomputer.
• I/O Processing Unit.
• DMA-Controlled Peripheral Handler.
• Master CPU Offload Controller.

Package Contents:

• 1x D8741AD IC EPROM DIP 40-pin

Datasheet