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southsails
Joined: 10 Jan 2006
Posts: 16
Location: Pittsburgh, PA USA
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 Posted: Tue Jan 10, 2006 3:32 pm Post subject: Intel C2105... 1K RAM? |
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| I picked up a bunch of Intel C2105 chips... (gold pins/gray ceramic). Is there any collectible value to these? And is my identification correct? They were produced in the late 70s. |
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CPUShack
Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA
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southsails
Joined: 10 Jan 2006
Posts: 16
Location: Pittsburgh, PA USA
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| Posted: Tue Jan 10, 2006 5:44 pm Post subject: |
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Anything more that can be found out about them? Were they standard kilobyte mem chips for the 70s? I am new to the chip collecting world.
Thanks in advance. |
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CPUShack
Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA
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| Posted: Tue Jan 10, 2006 7:05 pm Post subject: |
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1024-bit (1024 x 1) Dynamic RAM
• Introduced 3rd Qtr 1973
• NMOS
• Maximum Access Time: 80ns (2105-1); 95ns (2105); 85ns (2105-2)
• Maximum Cycle Time: 260ns (2105-1); 270ns (2105); 190ns (2105-2)
• Planar Refresh (2105, 2105-1, 2105-2)
• Invisible Refresh (2105-2)
• Standby Power: 100μW/Bit
• Fully Decoded: On Chip Address Decode
• Low Level Address, Data, Write Enable Inputs
• Current Sinking Output
• OR-Tie Capability
• All Inputs Have Protection Against Static Charge
• 18-pin Dual In-Line Package
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southsails
Joined: 10 Jan 2006
Posts: 16
Location: Pittsburgh, PA USA
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| Posted: Tue Jan 10, 2006 7:24 pm Post subject: |
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| Thanks very much! |
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Guest
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| Posted: Mon Jan 16, 2006 9:12 pm Post subject: |
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| What is one of these worth? |
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CPUShack
Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA
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