MSM548263中文资料冲电线数据手册PDF规格书

DESCRIPTION

The MSM548263 is a 2-Mbit CMOS multiport DRAM composed of a 262,144-word by 8-bit dynamic RAM, and a 512-word by 8-bit SAM. Its RAM and SAM operate independently and asynchronously.

FEATURES

• Single power supply: 5 V ±10

• Full TTL compatibility

• Multiport organization

RAM : 256K word x 8 bits

SAM : 512 word x 8 bits

• Extended page mode

• Write per bit

• Persistent write per bit

• Masked flash write

• Masked block write

• RAS only refresh

• CAS before RAS refresh

• Hidden refresh

• Serial read/write

• 512 tap location

• Programmable stops

• Bidirectional data transfer

• Split transfer

• Masked write transfer

• Refresh: 512 cycles/8 ms

• Package options:

40-pin 400 mil plastic SOJ (SOJ40-P-400-1.27) (Product : MSM548263-xxJS)

44/40-pin 400 mil plastic TSOP (Type II)(TSOPII44/40-P-400-0.80-K)(Product : MSM548263-xxTS-K)

xx indicates speed rank.