MF34M1-LYCATXX Datasheet | Mitsubishi Electric

DESCRIPTION Mitsubishi’s Static RAM cards provide large memory capacities on a device approximately the size of a credit card (85.6mm×54mm×3.3mm). The cards use a 8/16 bit data-bus. Available in 64KB, 128KB, 256KB, 512KB, 1 MB, 2 MB and 4 MB capacities, Mitsubishi’s SRAM cards conform to the PC Card Standard. Mitsubishi achieved high density memory, while maintaining credit size by using a thin small outline packaging technology (TSOP). The TSOP surpasses conventional memory card chip-on-board packaging technology where larger, surface-mount devices result in a tradeoff between card size and optimum memory density. The TSOP, with external leads spaced on 20-mil centers, is over four times smaller than standard equivalent pin count surface-mount packages. This allows up to 8 memory ICs (plus interface circuitry) to be mounted in a card that in only 3.3mm thick. 4. PRODUCT LIST Item Memory capacity Type name MF365A-LYCATXX 64KB MF3129-LYCATXX 128KB MF3257-LYCATXX 256KB MF3513-LYCATXX 512KB MF31M1-LYCATXX 1MB MF32M1-LYCATXX 2MB MF34M1-LYCATXX 4MB 2. FEATURES n Uses TSOP (Thin Small Outline Package) to achieve very high memory density coupled with high reliability, without enlarging card size n Electrostatic discharge protection to 15k V n Buffered interface n Write protect switch n68pin 3. APPLICATIONS n Office automation n Data munication nputers n Industrial n Telemunications n Consumer Data Bus width(bits) Attribute memory Auxiliary battery 8/16 MITSUBISHI ELECTRIC 1/14 Apr. 1999 Rev. 1.2 MITSUBISHI MEMORY CARD STATIC RAM CARDS 5. SUMMARY MF3XXX-LYCATXX series is the Static RAM cards which has 8/16 bit changeable data-bus width. The card has a replaceable lithium battery to maintain data in memory. When the card is not use or the supply voltage drops, the battery will automatically maintain data in memory. 6. FUNCTIONAL DESCRIPTION The function of the card is determined by the bination of the following five control signals, REG#, CE1#, CE2#, OE#, WE#; active...