MB81P643287 Datasheet, PDF (1/65 Pages) Fujitsu Component Limited. – 8 x 256K x 32 BIT, FCRAMTM CORE BASED DOUBLE DATA RATE SDRAM

FUJITSU SEMICONDUCTOR
DATA SHEET
DS05-11402-2E
MEMORY
CMOS
8 x 256K x 32 BIT, FCRAM^TM CORE
BASED DOUBLE DATA RATE SDRAM
MB81P643287-50/-60
CMOS 8-BANK x 262,144-WORD x 32 BIT, FCRAM Core Based
Synchronous Dynamic Random Access Memory
with Double Data Rate
s DESCRIPTION
The Fujitsu MB81P643287 is a CMOS Synchronous Dynamic Random Access Memory (SDRAM) with Fujitsu
advanced FCRAM (Fast Cycle Random Access Memory) Core Technology, containing 67,108,864 memory cells
accessible in an 32-bit format. The MB81P643287 features a fully synchronous operation referenced to clock
edge whereby all operations are synchronized at a clock input which enables high performance and simple user
interface coexistence. The MB81P643287 is designed to reduce the complexity of using a standard dynamic RAM
(DRAM) which requires many control signal timin.g constraints. The MB81P643287 uses Double Data Rate (DDR)
where data bandwidth is twice of fast speed compared with regular SDRAMs.
The MB81P643287 is ideally suited for Digital Visual Systems, High Performance Graphic Adapters, Hardware
Accelerators, Buffers, and other applications where large memory density and high effective bandwidth are
required and where a simple interface is needed.
The MB81P643287 adopts new I/O interface circuitry, SSTL_2 interface, which is capable of extremely fast data
transfer of quality under either terminated or point to point bus environment.
s PRODUCT LINE
Parameter
Clock Frequency
CL = 3
CL = 2
Burst Mode Cycle Time
CL = 3
CL = 2
Random Address Cycle Time
DQS Access Time From Clock
Operating Current
Power Down Current
Note: FCRAM is a trademark of Fujitsu Limited, Japan.
MB81P643287
-50
-60
200 MHz Max.
167 MHz Max.
133 MHz Max.
111 MHz Max.
2.5 ns Min.
3.0 ns Min.
3.75 ns Min.
4.5 ns Min.
30 ns Min.
36 ns Min.
0.1 × tCK + 0.2 ns Max.
0.1 × tCK + 0.2 ns Max.
460 mA Max.
405 mA Max.
35 mA Max.