Hi, You can add HOLTEK (www.holtek.com) real time clock chip HT1380. They are drop in for Dallas DS1302 but do not have battery charging facility. Pailoor Dr. Imre Bartfai wrote: > Hi, > add Ricoh, too. The RS5C313 does it fine, and cheap. > Imre > > On Sat, 30 Jan 1999, Donald L Burdette wrote: > > > Several others make real time clock chips. Check out Epson, Dallas > > (www.dalsemi.com) and Seiko. > > > > Dallas in particular makes a wide variety of different chips. > Interfaces > > for parallel, IIC, 1-Wire, SPI, etc. They also have some > sub-microamp > > parts. The part I buy and use is under $2.00, so it's cheaper than > the > > PIC, lower power, more accurate, smaller. > > > > Why use a dedicated PIC? > > > > Don > > > > -- Chip Technologies Microchip Design Consultant No. 70, 9th Main Road, Mathikere, Bangalore - 560 054. INDIA Tel : +91-80-3362807 Fax : +91-80-3369451 Email : chiptech@vsnl.com