Oki Electric Industry MSM514262
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.| Part No. | MSM514262 |
|---|---|
| Datasheet | MSM514262 Download |
| Manufacturer | Oki Electric Industry |
| Description | DRAM |
| Buy | Stock & Price |
DESCRIPTION
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 (ZIP28-P-400-1.27) 28-pin 400 mil plastic SOJ (SOJ28-P-400-1.27) (Product : MSM514262-xxZS) (Product : MSM514262-xxJS) xx indicates speed rank. PRODUCT FAMILY Family MSM514262-70 MSM514262-80 MSM514262-10 Access Time RAM 70 ns 80 ns 100 ns SAM 25 n...
