etxbrfa@kk36.ericsson.se (Bj|rn Fahller TT/MLG) (05/03/89)
On a RAM card 512k*8 I found a chip called MB7124H. I guess it's a dynamic
ram controller of some kind, but I don't know how it works. Cas someone out
there MAIL me a description of this chip?
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SNAIL: Bjoern Fahller Vox humana: (+46) 8 - 719 62 52 \_
ERICSSON TELECOM Fax machina: (+46) 8 - 740 28 34_/
Dept. KK/ETX/TT/MLG ,--------------------------------/
S-126 25 STOCKHOLM ,/ "The more you know,
SWEDEN ,/ the better you realize
-------------------------/ how little you know"
Please DO comment on my language.barry@hprmokg.HP.COM (Barry Fowler) (05/09/89)
It'the number for a Fujitsu 4 K PROM. (Schottky) 'Organized 512 x 8 Single 5 v. power supply, 25 nsec access time (typical) with the "H-Option" being a "guaranteed 35 nsec. MAX. access time. It's bipolar. Info. taken from page 10-61 of 1986/87 Fujitsu Memory Data Book. Pin 1 A6 Pin 2 A5 Pin 3 A4 Pin 4 A3 Pin 5 A0 Pin 6 A1 Pin 7 A2 Pin 8 E2 not Pin 9 Gnd. Pin 10 E1 not and PV (program voltage) Pin 11 O4 Pin 12 O3 Pin 13 O2 Pin 14 O1 Pin 15 A9 Pin 15 A8 Pin 16 A8 Pin 17 A7 Pin 18 Vcc and PVcc Have fun! +---------------------------------------------------------------------------+ | Barry M. Fowler @ Hewlett Packard Co. | Welcome to Penryn | | Roseville Manufacturing Operation | | | | Population: 1500 | | "If you lived here, you'd be | Elevation: 600 | | home by now." | ____ | | | TOTAL: 2100 | +---------------------------------------------------------------------------+ Disclaimer: Come on, Bozo!!! These opinions are mine and you're a fool if you try to blame my company for my writing them.
barry@hprmokg.HP.COM (Barry Fowler) (05/09/89)
Oops! Screwed up on the pinouts... Pin 1 A0 Pin 2 A1 Pin 3 A2 Pin 4 A3 Pin 5 A4 Pin 6 O1 Pin 7 O2 Pin 8 O3 Pin 9 O4 Pin 10 gnd Pin 11 O5 Pin 12 O6 Pin 13 O7 Pin 14 O8 Pin 15 Enable not (PVe also) Pin 16 A5 Pin 17 A6 Pin 18 A7 Pin 19 A8 Pin 20 Vcc (Pvcc also) 'Sorry for the previous mistake. +---------------------------------------------------------------------------+ | Barry M. Fowler @ Hewlett Packard Co. | Welcome to Penryn | | Roseville Manufacturing Operation | | | | Population: 1500 | | "If you lived here, you'd be | Elevation: 600 | | home by now." | ____ | | | TOTAL: 2100 | +---------------------------------------------------------------------------+ Disclaimer: Come on, Bozo!!! These opinions are mine and you're a fool if you try to blame my company for my writing them.