1
DS05-10167-3E
FUJITSU SEMICONDUCTOR
DATA SHEET
MEMORY
CMOS
2 M
× 8 BIT
FAST PAGE MODE DYNAMIC RAM
MB8117800A-60/-70
CMOS 2,097,152
× 8 Bit Fast Page Mode Dynamic RAM
s DESCRIPTION
The Fujitsu MB8117800A is a fully decoded CMOS Dynamic RAM (DRAM) that contains 16,777,216 memory
cells accessible in 8-bit increments. The MB8117800A features a “fast page” mode of operation whereby high-
speed random access of up to 1,024-bits of data within the same row can be selected. The MB8117800A DRAM
is ideally suited for mainframe, buffers, hand-held computers video imaging equipment, and other memory
applications where very low power dissipation and high bandwidth are basic requirements of the design. Since
the standby current of the MB8117800A is very small, the device can be used as a non-volatile memory in
equipment that uses batteries for primary and/or auxiliary power.
The MB8117800A is fabricated using silicon gate CMOS and Fujitsu’s advanced four-layer polysilicon and two-
layer aluminum process. This process, coupled with advanced stacked capacitor memory cells, reduces the
possibility of soft errors and extends the time interval between memory refreshes. Clock timing requirements for
the MB8117800A are not critical and all inputs are TTL compatible.
s PRODUCT LINE & FEATURES
Parameter
MB8117800A-60
MB8117800A-70
RAS Access Time
60 ns max.
70 ns max.
Random Cycle Time
110 ns min.
130 ns min.
Address Access Time
30 ns max.
35 ns max.
CAS Access Time
15 ns max.
17 ns max.
Hyper Page Mode Cycle Time
40 ns min.
45 ns min.
Low Power
Dissipation
Operating Current
715 mW max.
660 mW max.
Standby Current
11 mW max. (TTL level) / 5.5 mW max. (CMOS level)
• 2,097,152 words
× 8 bit organization
• Silicon gate, CMOS, Advanced Capacitor Cell
• All input and output are TTL compatible
• 2048 refresh cycles every 32.8ms
• Self refresh function
• Early write or OE controlled write capability
•RAS-only, CAS-before-RAS, or Hidden
Refresh
• Fast Page Mode, Read-Modify-Write
capability
• On chip substrate bias generator for high
performance
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