Path: utzoo!attcan!uunet!zephyr.ens.tek.com!tektronix!gvgpsa!gold!grege From: grege@gold.GVG.TEK.COM (Gregory Ebert) Newsgroups: comp.os.cpm Subject: Re: Need info on 5832 and 58321 clock chips Message-ID: <847@gold.GVG.TEK.COM> Date: 13 Mar 90 17:35:09 GMT References: Organization: Grass Valley Group, Grass Valley, CA Lines: 42 In article RALPH@UHHEPG.BITNET (Ralph Becker-Szendy) writes: >Hi > >The subject line says it all: I need some information (pin assignment, register >locations, interfacing) for the MSM 5832 and RTC 58321 clock chips (in view of >putting one of them onto my homebrew Z80 system). > OKI semiconductor makes them (617) 279-0293. The 5832 has +/- 30 sec adjust, separate addr/data lines, has a funny VCC/GND pin location, and lives in 18 pins. 1=VDD 18=hold 2=WRITE 17=XT* 3=READ 16=XT 4=A0 15=+/-30SEC ADJ. 5=A1 14=TEST 6=A2 13=GND 7=A3 12=D3 8=CS 11=D2 9=D0 10=D1 The 58321 looks like : 1=CS2 16=VDD 2=WR 15=XT 3=RD 14=XT* 4=D0 13=CS1 5=D1 12=TEST 6=D2 11=STOP 7=D3 10=BUSY* 8=GND 9=ADDR WRITE Both chips require an external crystal, but have the oscillator guts onchip. Send me a SASE and I'll give you copies of the data sheet. ----------------------------------------------------------------------------- Greg Ebert ..uunet!tektronix!gvgpsa!gold!grege Grass Valley Group 400 Providence Mine Rd grege@gold.gvg.tek.com Nevada City, CA 95959 (916) 478-4057