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CDP1855C - 8-Bit Programmable Multiply/Divide Unit

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.

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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📁 Similar Datasheet

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Other Datasheets by Intersil (Renesas)

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CDP1855 8-Bit Programmable Multiply/Divide Unit
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CDP1852C Byte-Wide Input/Output Port

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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