kds@intelca.UUCP (Ken Shoemaker) (01/18/86)
a CMOS, battery backed up, real time clock with some small amount of
battery backed up RAM (or really, any kind of storage...access to it
can be really gross if that is all that is available). Any pointers?
--
If you don't like the answer, then ask another question! Everything is the
answer to something...
Ken Shoemaker, Microprocessor Design, Intel Corp., Santa Clara, Ca.
{pur-ee,hplabs,amd,scgvaxd,dual,qantel}!intelca!kds
---the above views are personal.grr@cbm.UUCP (George Robbins) (01/20/86)
> a CMOS, battery backed up, real time clock with some small amount of > battery backed up RAM (or really, any kind of storage...access to it > can be really gross if that is all that is available). Any pointers? > -- > Ken Shoemaker, Microprocessor Design, Intel Corp., Santa Clara, Ca. > {pur-ee,hplabs,amd,scgvaxd,dual,qantel}!intelca!kds If you are looking for chip level stuff, Ricoh makes a chip that is fairly compatable with the direct bus attached version of the standard OKI chip, and contains about 31 bytes of protected ram. Motorola has been talking for Aeons now about a 'Micro-Ben' clock chip that also has internal ram. I don't know if it's available yet, or how compatable it is with the clock chip used in the AT. -- George Robbins - now working with, uucp: {ihnp4|seismo|caip}!cbm!grr but no way officially representing arpa: cbm!grr@seismo.css.GOV Commodore, Engineering Department fone: 215-431-9255 (only by moonlite)
rbc@houxu.UUCP (R.CONNAGHAN) (01/21/86)
In the original article: Wanted a CMOS Battery Backed Up clock with some backed up memory. Try SmartWatch from Dallas Semiconductor (214) 450-0400. A unique device in a 28-pin DIP SOCKET!. Inside the socket is a lithium battery and a clock chip that keeps track of Years, Months, Day of Month, Days, Hours, Minutes, Seconds, and Hundreds of Seconds. The socket accepts a CMOS 2K x 8 or 8K x 8 ram. Watch operation independant of Ram function. Access to the watch is via a bizzare 64 access serial stream into Data 0 of the ram. -- Robert Connaghan WE 32100 Microprocessor Group AT&T Information System - Holmdel, N.J. houxu!rbc
grr@cbm.UUCP (George Robbins) (01/22/86)
> > a CMOS, battery backed up, real time clock with some small amount of > > battery backed up RAM... > > Ken Shoemaker, Microprocessor Design, Intel Corp., Santa Clara, Ca. > > Motorola has been talking for Aeons now about a 'Micro-Ben' clock chip that ^^^^^^^^ > also has internal ram. I don't know if it's available yet... I just got a nice note from Phil Weinburg at Motorola indicating that I was in error. Watch me blush in embarressment. The 'Micro-Ben' part I was casting spears at belongs to National; Motorola has had clock chip with memory for years now. Real Data: Motorola: MC146818A - Out for years, 'A' version for 6 months Contact your nearest Motorola Rep Ricoh: RP5C01, RP5C15 Panatech Semi, Santa Clara, 408-727-7700 National: DP8570 'Micro-Ben' - availability unknown Contact your nearest National Rep -- George Robbins - now working with, uucp: {ihnp4|seismo|caip}!cbm!grr but no way officially representing arpa: cbm!grr@seismo.css.GOV Commodore, Engineering Department fone: 215-431-9255 (only by moonlite)