MSM514252A - OKI electronic componets

MSM514252A DRAM / FAST PAGE MODE TYPE

The MSM514252A 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 static serial access memory, SAM port. The RAM port and SAM port operate independently and asynchronously. The MSM514252A supports three types of operations: random access to and from the RAM port, high speed serial access to and from the .

Features

• Single power supply of 5 V ± 10% with a built-in VBB generator
• All inputs and outputs: TTL compatible
• Multiport organization RAM port: 256K word ¥ 4 bits SAM port: 512 word ¥ 4 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 capability Fully static register 512 tap location
• RAM-SAM bidirectional, Read/Write/Pseudo write, Real time read transfer
• Package options: 28-pin 400 mil plastic ZIP (ZIP28-P-400-1.27) (Product : MSM514252A-xxZS) 28-pin 400 mil plastic SOJ (SO.