piclist 2000\06\05\120527a >
Thread: External SRAM on PIC (or AVR)
face BY : Mark Willis email (remove spam text)

Of all things, the palmtop I use a lot uses DRAM as it's main RAM - I
was CONVINCED this was SRAM, but it's not.  1/2Mb per chip, and I have 2
(1 Mb) pairs sitting here waiting for a future project.  These're
Hitachi RAM, set in TSOP Left & Right sets (reversed pinout for one -
you can Bus the tri-state pins this way) - Interesting stuff.  So I now
know that it's quite possible, WITH the right RAM, to go decently low
power (2 weeks off 2 1300mAh NiMH batt's with the rest of the machine
running off the same batteries) - Sorta shocked ME!  If I keep upgrading
these machines, someone could talk me out of a pair, certainly you could
talk me out of part numbers (KM416V256ALLTR is the reversed one) - I can
find the other number if you cannot get there from here <G>

I have some info I can dig out that may show how they handle the refresh
process, too.


Harold Hallikainen wrote:
{Quote hidden}

> > {Original Message removed}
<393B6956.63527BF8@foxinternet.net> 7bit

See also: www.piclist.com/techref/microchip/memory.htm?key=sram
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Subject (change) External SRAM on PIC (or AVR)

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