256K x 16 DRAM
Documents
Description
The MSM54V16282
is a 4-Mbit CMOS multiport DRAM composed of a 262,144-word by 16-bit dynamic
RAM, and a 512-word by 16-bit SAM. Its RAM and SAM operate independently and
asynchronously.
It supports three types of operations: random access to RAM port, high speed
serial access to SAM port, and bidirectional transfer of data between any
selected row in the RAM port and the SAM port. In addition to the conventional
multiport DRAM operating modes, the MSM54V16282 features block write and flash
write functions on the RAM port, and a split data transfer capability on the SAM
port. The SAM port requires no refresh operation because it uses static CMOS
flip-flops.
Features
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Single power supply: 3.3 V ±0.3 V |
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Full TTL compatibility |
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Multiport organization:
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RAM: 256K word x 16 bits |
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SAM: 512 word x 16 bits | |
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Fast page mode |
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Write per bit |
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Byte write |
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Masked flash write |
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Masked block write (8 columns) |
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*RAS only refresh |
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*CAS before *RAS refresh |
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*CAS before *RAS self-refresh |
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Hidden refresh |
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Serial read / write |
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512 tap location |
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Bidirectional data transfer |
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Split transfer |
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Masked write transfer |
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Refresh: 512 cycles / 8ms |
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Package:
64-pin 525 mil plastic SSOP
(SSOP64-P-525-0.80-K)
(Product: MSM54V16282-xxGS-K)
70 / 64-pin 400 mil
plastic TSOP (Type II)(TSOPII70/64-P-400-0.65-K)
(Product :
MSM54V16282-xxTS-K)
xx indicates speed rank.
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