11 Aug
2010
11 Aug
'10
6:42 p.m.
On 8/11/10 8:48 PM, Alexandre Souza - Listas wrote:
Is that what does it? I definitely remember a "kick start" bit in
the datasheet. Was that for the clock, and the /WR line enabled the
backup for the SRAM?
-Dave
--
Dave McGuire
Port Charlotte, FL
Well yes, but
it's not really all that bad. Those chips are shipped
with their clocks stopped, and you need to set a bit in them (normally
done by the OS at boot time, just in case) to "kick start" them. I
believe the datasheets even call it the "kick start bit". The battery
life is essentially the shelf life before the kick start bit is set
for the first time.
First pulse in the /wr line...