描述 Description

The CDP1855 and CDP1855C are CMOS 8-bit multiply/divide units which can be used to greatly increase the capabilities of 8-bit microprocessors. They perform multiply and divide operations on unsigned, binary operators. In general, microprocessors do not contain multiply or divide nstructions and even efficiently coded multiply or divide subroutines require considerable memory and execution time. These multiply/divide units directly interface to the CDP1800-series microprocessors via the N-lines and can easily be configured to fit in either the memory or I/O space of other 8-bit microprocessors.

特性 Features

? Cascadable Up to 4 Units for 32-Bit by 32-Bit Multiply or 64 ÷ 32-Bit Divide

? 8-Bit by 8-Bit Multiply or 16 ÷ 8-Bit Divide in 5.6μs at 5V or 2.8μs at 10V

? Direct Interface to CDP1800-Series Microprocessors

? Easy Interface to Other 8-Bit Microprocessors

? Significantly Increases Throughput of Microprocessor Used for Arithmetic Calculations