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CDP1855C Datasheet 8-Bit Programmable Multiply/Divide Unit

Manufacturer: Intersil (now Renesas)

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General 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 instructions and even efficiently coded multiply or divide subroutines require considerable memory and execution time.

Overview

CDP1855, CDP1855C March 1997 8-Bit Programmable Multiply/Divide.

Key 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 Ordering Information.

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