參數(shù)資料
型號： MSM5416262
廠商： OKI SEMICONDUCTOR CO., LTD.
英文描述： 262,144-Word ×16-Bit Multiport DRAM(256k字×16位多端口動態(tài)RAM)
中文描述： 262,144字× 16位多端口內(nèi)存（256k字× 16位多端口動態(tài)RAM）的
文件頁數(shù)： 1/37頁
文件大小： 366K
代理商： MSM5416262
Semiconductor
MSM5416262
1/37
262,144-Word
￥
16-Bit Multiport DRAM
DESCRIPTION
The MSM5416262 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 MSM5416262
features block write, 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
Single power supply: 5 V
±
10%
Full TTL compatibility
Multiport organization
RAM :256K word
￥
16 bits
SAM :512 word
￥
16 bits
Fast page mode
Write per bit
Byte write
Masked flash write
Masked block write (4
￥
4
￥
4
)
Package:
64-pin 525 mil plastic SSOP
(SSOP64-P-525-0.80-K)
(Product : MSM5416262-xxGS-K)
xx indicates speed rank.
PRODUCT FAMILY
RAS
only refresh
CAS
before
RAS
refresh
Hidden refresh
Serial read/write
512 tap location
Bidirectional data transfer
Split transfer
Masked write transfer
Refresh: 512 cycles/8 ms
Access Time
RAM
50 ns
60 ns
70 ns
Cycle Time
RAM
110 ns
120 ns
140 ns
Power Dissipation
Operating
180 mA
170 mA
160 mA
Standby
9 mA
9 mA
9 mA
SAM
17 ns
18 ns
20 ns
SAM
20 ns
22 ns
22 ns
Family
MSM5416262-50
MSM5416262-60
MSM5416262-70
E2L0018-17-Y1
This version: Jan. 1998
Previous version: Dec. 1996
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PDF描述
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