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Part Number: MSM518121A
Description: The MSM518121A is an 1-Mbit CMOS multiport memory composed of a 131,072-words by 8-bit dynamic random ...
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MSM518121A
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General Description
MSM518121A General Description
The MSM518121A is an 1-Mbit CMOS multiport memory composed of a 131,072-words by 8-bit dynamic random access memory, RAM port, and a 256-word by 8-bit static serial access memory, SAM port. The RAM port and SAM port operate independently and asynchronously.
The MSM518121A supports three types of operation: random access to and from the RAM port, high speed serial access to and from the SAM port and bidirectional transfer of data between any selected row in the RAM port and the SAM port. The RAM port and the SAM port can be accessed independently except when data is being transferred between them internally.
MSM518121A Maximum Ratings
| Item | Symbol | Ratings | Unit |
| Voltage on any pin relative to Vss | VT | 1.0 to7.0 | V |
| Short circuit current | IOS | 50 | mA |
| Power dissipation | PD* | 1 | W |
| Operating temperature | Topr | 0 to 70 | °C |
| Storage temperature | Tstg | - 55 to 150 | °C |
*: Ta=25°C
MSM518121A Features
• Single power supply of 5 V ±10% with a built-in VBB generator
• All inputs and outputs :TTL compatible
• Multiport organization
- RAM port : 128K word x 8 bits
- SAM port : 256 word x 8 bits
• RAM port
- Fast page mode, Read modify write
- CAS before RAS refresh, Hidden refresh
- RAS only refresh, Standard write-per-bit
• SAM port
- High speed serial
- Read / Write capabillity
- Fully static register
- 256 tap location
• RAM-SAM bidirectional, Read / Write / Pseudo write, Real time read transfer
• Package options:
- 40-pin 475 mil plastic ZIP (ZIP40-P-475-1.27) (Product : MSM518121A-xxZS)
- 40-pin 400 mil plastic SOJ (SOJ40-P-400-1.27) (Product : MSM518121A-xxJS) xx indicates speed rank.
MSM518121A Connection Diagram
MSM518121A
PDF/DataSheet Download
- Datasheet: MSM518121A
- File Size: 393930 KB
- Manufacturer: OKI
- Click here to Download
- ·MSM10S0000
- OKI [OKI electronic componets]
- 0.8um CMOS
- 48604 KB
- ·MSM13Q
- OKI [OKI electronic componets]
- 0.35 レm Sea of Gates Arrays
- 232838 KB
- ·MSM14Q000
- OKI [OKI electronic componets]
- 0.35 レm Sea of Gates Arrays
- 232838 KB
- ·MSM27C1602CZ
- OKI [OKI electronic componets]
- 1,048,576-Word x 16-Bit or 2,097,152-Word x 8-Bit One Time PROM
- 111107 KB
- ·MSM27C1652CZ
- OKI [OKI electronic componets]
- 1,048,576-Word x 16-Bit or 2,097,152-Word x 8-Bit 8-Word x 16-Bit or 16-Word x 8-Bit Page Mode One Time PROM
- 93703 KB
- ·MSM27C1655CZ
- OKI [OKI electronic componets]
- 524,288-Double Word x 32-Bit or 1,048,576-Word x 16-Bit 4-Double Word x 32-Bit or 8-Word x 16-Bit Page Mode One Time PROM
- 93258 KB
- ·MSM27C3202CZ
- OKI [OKI electronic componets]
- 2,097,152-Word x 16-Bit or 4,194,304-Word x 8-Bit One Time PROM
- 89388 KB
- ·MSM27C3252CZ
- OKI [OKI electronic componets]
- 2,097,152-Word x 16-Bit or 4,194,304-Word x 8-Bit 8-Word x 16-Bit or 16-Word x 8-Bit Page Mode One Time PROM
- 92532 KB
MSM518121A Relative Products
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MSM514800E
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MSM514800C
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MSM514400E
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MSM514400D
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