The Casio SF-5x80/5x90SY/6x00SY/7x00SY Model Family

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Table of Contents

These Casio diary models share a common set of functions and features, and a common data format and communications protocol.

+Model Differences

Model Memory
SF-5580, SF-5590SY, SF-6500SY 128 KiB
SF-5780, SF-5790SY, SF-6700SY 256 KiB
SF-5980, SF-5990SY, SF-6900SY 512 KiB
SF-7100SY 1 MiB
SF-7200SY 2 MiB

The SF-5x80 models were first introduced in 1996. They were discontinued in 1998.

The SF-5x90SY models were introduced in 1997. They were discontinued in 1999. They look almost identical to the SF-5x80 models, but have the following differences:

  • Different serial port interface operating at 12 volts instead of 6 volts, and cannot use the same cable as the SF-5x80 models. The difference is distinguished by a 3.5 mm plug1 instead of a 2.5 mm plug2.
  • New Synch function which allows the diary to synchronize with a PC database. The older Send/Receive function compatible with the SF-5x80 models is still present.

The SF-6x00SY models were introduced in 1999. The later SF-7x00SY models are identical except for more memory. Only the SF-7x00SY models are still available. These models are similar to the SF-5x90SY models, including the Synch function and the 12 volt serial interface, but with the following differences:

  • 50% wider screen displaying more horizontal characters
  • Uses AA size batteries instead of AAA size
  • Case design changed to accommodate larger screen and batteries
  • Record size limit increased from 255 characters to 511 characters


Data Types Supported:

  • Telephone: 3 separate files
  • Memo: 3 separate files
  • ToDo: 3 separate files
  • Expense: 3 separate files
  • Schedule
  • Reminder (annual only)

Other Functions:

  • Clock with Home Time, World Time, Alarm function
  • Calendar
  • Calculator: standard 5-function with memory
  • Currency/Unit converter
  • Games: Poker and Blackjack
  • Multi-language menus (only English, Spanish and French for the SF-5x80/5x90SY models, more choices for the SF-6x00SY/7x00SY models)
  • Secret password protection
  • Serial communication: Send/Receive and Synch

The 3 separate files for the Telephone, Memo, ToDo, and Expense data types allow you to separate Personal and Business data, or other categories you may have.

IMSL Software,
with minor corrections and notations.




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