TB303 RAM again

[Fraser, Colin J]

> -----Original Message-----
> From: tomg [mailto:efm3 at mediaone.net]
> Sent: 03 April 2000 05:18
> To: Trevor Page; synth-diy at node12b53.a2000.nl
> Subject: Re: TB303 RAM again
> 
> Hi Trev, The 2114 will do fine on battery backup. You could 
> have a bad chip but I would look for a leaky cap or something 
> else in the area.

There are a number of different types of 1024x4 SRAM, some of which are CMOS
and some not - I've replaced one of these before and also used a non-CMOS
version.
That drained the backup battery overnight too.
I checked the data on the chip I had bought in the Maplin catalogue, and
sure enough, idle current was a couple of milliamps.

Colin f