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参数资料
| 型号： | MSM514262-70JS |
| 厂商： | OKI SEMICONDUCTOR CO., LTD. |
| 英文描述： | 262,144-Word x 4-Bit Multiport DRAM |
| 中文描述： | 262,144字× 4位多端口内存 |
| 文件页数： | 1/45页 |
| 文件大小： | 507K |
| 代理商： | MSM514262-70JS |
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Semiconductor
MSM514262
1/45
DESCRIPTION
The MSM514262 is an 1-Mbit CMOS multiport DRAM composed of a 262,144-word by 4-bit
dynamic RAM and a 512-word by 4-bit SAM. Its RAM and SAM operate independently and
asynchronously.
The MSM514262 supports three types of operation : 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 MSM514262 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: 256K word
￥
4 bits
SAM: 512 word
￥
4 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
512 tap location
Bidirectional data transfer
Split transfer
Masked write transfer
Refresh: 512 cycles/8 ms
Package options:
28-pin 400 mil plastic ZIP
28-pin 400 mil plastic SOJ
(ZIP28-P-400-1.27)
(SOJ28-P-400-1.27)
(Product : MSM514262-xxZS)
(Product : MSM514262-xxJS)
xx indicates speed rank.
PRODUCT FAMILY
262,144-Word
￥
4-Bit Multiport DRAM
MSM514262-70
MSM514262-80
MSM514262-10
Access Time
RAM
70 ns
80 ns
100 ns
SAM
25 ns
25 ns
25 ns
Cycle Time
RAM
140 ns
150 ns
180 ns
SAM
30 ns
30 ns
30 ns
Power Dissipation
Operating
120 mA
110 mA
100 mA
Standby
8 mA
8 mA
8 mA
Family
E2L0013-17-Y1
This version: Jan. 1998
Previous version: Dec. 1996
相关PDF资料 |
PDF描述 |
|---|---|
| MSM514262-70ZS | 262,144-Word x 4-Bit Multiport DRAM |
| MSM514262-80JS | 262,144-Word x 4-Bit Multiport DRAM |
| MSM514262-80ZS | 262,144-Word x 4-Bit Multiport DRAM |
| MSM514262-10JS | 262,144-Word x 4-Bit Multiport DRAM |
| MSM514262-70 | Oscillator; Oscillator Type:TCVCXO; Frequency:16.32MHz; Frequency Tolerance:+/- 0.5 ppm; Load Capacitance:15pF; Crystal Terminals:PCB Surface Mount; Supply Voltage:3.3V; Leaded Process Compatible:No |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MSM514262-70Z3 | 制造商:OK International 功能描述: |
| MSM514262-70ZS | 制造商:ROHM Semiconductor 功能描述: 制造商:OK International 功能描述:VRAM, FAST PAGE, 256KX4, 28 Pin, Plastic, ZIP 制造商:OKI Semiconductor 功能描述:VRAM, FAST PAGE, 256KX4, 28 Pin, Plastic, ZIP |
| MSM514262-80 | 制造商:OKI 制造商全称:OKI electronic componets 功能描述:262,144-Word x 4-Bit Multiport DRAM |
| MSM514262-80JS | 制造商:OKI 制造商全称:OKI electronic componets 功能描述:262,144-Word x 4-Bit Multiport DRAM |
| MSM514262-80ZS | 制造商:OKI 制造商全称:OKI electronic componets 功能描述:262,144-Word x 4-Bit Multiport DRAM |
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