Datasheet > MSM54C865

MSM54C865

更新时间： 2022-04-23 23:00:11

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
44页	463K
描述
65,536-Word X 8-Bit Multiport DRAM

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数据手册

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MSM54C865 数据手册

E2L0011-17-Y1

This version: Jan. 1998

Previous version: Dec. 1996

MSM54C865

¡ Semiconductor

MSM54C865

65,536-Word ¥ 8-Bit Multiport DRAM

DESCRIPTION

The MSM54C865 is a 512Kbit CMOS multiport DRAM composed of a 65,536-word by 8-bit

dynamic RAM and a 256-word by 8-bit SAM. Its RAM and SAM operate independently and

asynchronously.

TheMSM54C865supportsthreetypesofoperaton:randomaccesstoRAMport,highspeedserial

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

MSM54C865 features the 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

• Single power supply: 5 V ±10%

• Full TTL compatibility

• Multiport organization

RAM : 64K word ¥ 8 bits

SAM : 256 word ¥ 8 bits

• Fast page mode

• Write per bit

• Masked flash write

• Masked block write

• RAS only refresh

• CAS before RAS refresh

• Hidden refresh

• Serial read/write

• 256 tap location

• Bidirectional data transfer

• Split transfer

• Masked write transfer

• Refresh :256 cycles/4 ms

• Package options:

40-pin 475 mil plastic ZIP

40-pin 400 mil plastic SOJ

(ZIP40-P-475-1.27)

(SOJ40-P-400-1.27)

(Product : MSM54C865-xxZS)

(Product : MSM54C865-xxJS)

xx indicates speed rank.

PRODUCT FAMILY

Access Time

Cycle Time

Power Dissipation

Family

RAM

70 ns

80 ns

100 ns

SAM

25 ns

RAM

140 ns

150 ns

180 ns

SAM

30 ns

Operating

Standby

8 mA

MSM54C865-70

MSM54C865-80

MSM54C865-10

120 mA

110 mA

100 mA

8 mA

1/44

12 3 4 5 6 7...44

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与MSM54C865相关器件

型号	品牌	描述	获取价格	数据表
MSM54C865-10	OKI	65,536-Word X 8-Bit Multiport DRAM	获取价格
MSM54C865-10JS	OKI	65,536-Word X 8-Bit Multiport DRAM	获取价格
MSM54C865-10ZS	OKI	65,536-Word X 8-Bit Multiport DRAM	获取价格
MSM54C865-70	OKI	65,536-Word X 8-Bit Multiport DRAM	获取价格
MSM54C865-70JS	OKI	65,536-Word X 8-Bit Multiport DRAM	获取价格
MSM54C865-70ZS	OKI	65,536-Word X 8-Bit Multiport DRAM	获取价格