مدار مجتمع (آی سی) آی سی‌کاربرد ویژه

Product Attributes

Introduction

The Am9511A Arithmetic Processing Unit (APU) is a monolithic MOS/LSI device that provides high-performance fixed-point and floating-point arithmetic, as well as a variety of floating-point trigonometric and mathematical operations. It can be used to enhance the computational capability of various processor-oriented systems. All transfers, including operand, result, status, and command information, are conducted through an 8-bit bidirectional data bus. Operands are pushed onto an internal stack, and commands are issued to perform operations on the data in the stack. Results can then be retrieved from the stack, or additional commands can be entered. Transfers to and from the APU can be handled by the associated processor using conventional programmed I/O, or by a direct memory access controller for improved performance. Upon completion of each command, the APU asserts an end-of-execution signal that the CPU can use as an interrupt to help coordinate program execution.

Features

• 2 and 3 MHz operation; fixed-point 16-bit and 32-bit operations
• Floating-point 32-bit operations; binary data format
• Addition, subtraction, multiplication, division; trigonometric and inverse trigonometric functions
• Square root, logarithm, exponential operations; floating-point to fixed-point and fixed-point to floating-point conversion
• Stack-oriented operand storage; DMA or programmed I/O data transfer
• End signal simplifies concurrent processing: synchronous/asynchronous operation
• General-purpose 8-bit data bus interface; standard 24-pin package