piclist 2000\06\02\050558a >
Thread: External SRAM on PIC (or AVR)
face BY : TOM THERON email (remove spam text)

PCF8570 from Philips,  256 x 8,  i2c interface.


----- Original Message -----
From: Bob Ammerman
Sent: Friday, June 02, 2000 4:18 AM
Subject: [PIC]: External SRAM on PIC (or AVR)

Just a dumb question: Serial RAM? I've heard of search EEPROM and serial
FLASH. I have had a couple applications where serial RAM would have been a
godsend. Does anybody make this? What capicity?


Bob Ammerman
RAm Systems
(high function, high performance, low level software)

----- Original Message -----
From: Bennett, Matt <@spam@Matt.Bennett@spam@spamANDREW.COM>
Sent: Thursday, June 01, 2000 11:38 AM
Subject: [PIC]: External SRAM on PIC (or AVR)

> If you've used the external SRAM (as in STATIC, not serial) on a PIC or
> which SRAM did you use?  I'm having problems finding a 64Kx8 part that is
> pin compatible (without gates other than an address latch) and is in stock
> somewhere.  I could go to a 2 32K SRAMs, but I'd rather not.
> The PIC (17C) uses an ALE, /OE, /WR scheme, and the AVR uses an ALE, /RD,
> /WR scheme.  The PIC appears compatible with the 61XXX family of SRAMs
> are currently being made of Unobtanium [Un]), but in my brief search, I
> haven't found any that are directly compatible with the AVR's scheme.
> Serial RAMs are not an option, due to speed issues.
> Matt Bennett

<000801bfcc72$599c0b40$8d9e22c4@canopus> 7bit

See also: www.piclist.com/techref/microchip/memory.htm?key=sram
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