On Tue, 22 Apr 2003, you wrote:
> Please excuse this non-SDCC query.
> I need to implement an eternal calendar in an 89c51 system.
> Can any one point me in the right direction(internet site etc)?
PCF8573 is a a oldstyle(no seconds,no lapyear) clock, accesable about
2 lines (IIC).
You can also use the PCF8583 which is more complete.
Only 2 portlines and a simple software is used.