Datasheet > MSM548262-70TS-K

MSM548262-70TS-K

更新时间： 2024-09-08 22:35:43

品牌	Logo	应用领域
冲电气 - OKI		动态存储器
页数	文件大小	规格书
37页	459K
描述
262,144-Word x 8-Bit Multiport DRAM

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数据手册

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MSM548262-70TS-K 数据手册

E2L0016-17-Y1

This version: Jan. 1998

Previous version: Dec. 1996

¡ Semiconductor

MSM548262

¡ Semiconductor

MSM548262

262,144-Word ¥ 8-Bit Multiport DRAM

DESCRIPTION

The MSM548262 is a 2-Mbit CMOS multiport DRAM composed of a 262,144-word by 8-bit

dynamic RAM, and a 512-word by 8-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 MSM548262

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

• RAS only refresh

• Single power supply: 5 V ±10%

• Full TTL compatibility

• Multiport organization

RAM : 256K word ¥ 8 bits

SAM : 512 word ¥ 8 bits

• Fast page mode

• CAS before RAS refresh

• Hidden refresh

• Serial read/write

• 512 tap location

• Bidirectional data transfer

• Split transfer

• Write per bit

• Masked write transfer

• Refresh: 512 cycles/8 ms

• Masked flash write

• Masked block write

• Package options:

40-pin 400 mil plastic SOJ

(SOJ40-P-400-1.27)

(Product : MSM548262-xxJS)

44/40-pin 400 mil plastic TSOP (Type II)(TSOPII44/40-P-400-0.80-K)(Product : MSM548262-xxTS-K)

xx indicates speed rank.

PRODUCT FAMILY

Access Time

Cycle Time

RAM SAM

Power Dissipation

Family

MSM548262-60

RAM

60 ns

70 ns

80 ns

SAM

Operating

Standby

8 mA

17 ns 120 ns 22 ns

17 ns 140 ns 22 ns

20 ns 150 ns 25 ns

140 mA

130 mA

120 mA

MSM548262-70

MSM548262-80

8 mA

1/37

12 3 4 5 6 7...37

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与MSM548262-70TS-K相关器件

型号	品牌	获取价格	描述	数据表
MSM548262-80JS	OKI	获取价格	262,144-Word x 8-Bit Multiport DRAM
MSM548262-80TS-K	OKI	获取价格	262,144-Word x 8-Bit Multiport DRAM
MSM548263	OKI	获取价格	262,144-Word x 8-Bit Multiport DRAM
MSM548263-60JS	OKI	获取价格	Video DRAM, 256KX8, 60ns, CMOS, PDSO40, 0.400 INCH, 1.27 MM PITCH, PLASTIC, SOJ-40
MSM548263-60TS-K	OKI	获取价格	Video DRAM, 256KX8, 60ns, CMOS, PDSO40, 0.400 INCH, 0.80 MM PITCH, PLASTIC, TSOP2-44/40
MSM548263-70JS	OKI	获取价格	Video DRAM, 256KX8, 70ns, CMOS, PDSO40, 0.400 INCH, 1.27 MM PITCH, PLASTIC, SOJ-40
MSM548263-70TS-K	OKI	获取价格	Video DRAM, 256KX8, 70ns, CMOS, PDSO40, 0.400 INCH, 0.80 MM PITCH, PLASTIC, TSOP2-44/40
MSM548263-80TS-K	OKI	获取价格	Video DRAM, 256KX8, 80ns, CMOS, PDSO40, 0.400 INCH, 0.80 MM PITCH, PLASTIC, TSOP2-44/40
MSM548331	OKI	获取价格	222,720-Word x 12-Bit Field Memory
MSM548332	OKI	获取价格	278,400-Word x 12-Bit Field Memory