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willie.ar
Joined: 21 Jan 2004 Posts: 15 Location: Argentina
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need 1 Kb of RAM |
Posted: Sun Jun 06, 2004 7:49 pm |
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I want to add RAM to a project. I need to buffer about 600 bytes so I need 1Kb of RAM and I can't find any serial (I2C) static RAM of that size, not either a vendor of the PCF8570. I want to use a PIC because I have all the code almost finished, the compiler, programmer, etc. Does anybody have an idea which configuration of microcontroller and RAM can I use?
tks |
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Kenny
Joined: 07 Sep 2003 Posts: 173 Location: Australia
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PCM programmer
Joined: 06 Sep 2003 Posts: 21708
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Posted: Sun Jun 06, 2004 8:33 pm |
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Quote: | I want to add RAM to a project. I need to buffer about 600 bytes so I need 1Kb of RAM. |
You didn't say what PIC you're using.
If you're using a 16F877, then change to a 18F452.
Move from 368 bytes of ram to 1536 bytes. There's your 1K.
It's cheaper, too. |
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willie.ar
Joined: 21 Jan 2004 Posts: 15 Location: Argentina
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Posted: Tue Jun 08, 2004 9:40 am |
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thanks for your answers.
The project is running now buffering 50 bytes on a 16F628 so the 18F452 seems to be "so much" for that task.
the FM24C16 looks to be very interesting. I have to study the protocol to r&w, timing and availability on the market.
tks again
willie.ar |
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dyeatman
Joined: 06 Sep 2003 Posts: 1924 Location: Norman, OK
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FM24C16 |
Posted: Tue Jun 08, 2004 11:06 am |
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The FM24C16 is a drop in replacement for the standard 24C16 EPROM the only difference being there is no wait time required after writes. I used the 24c16 driver and removed the wait after write delays. |
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