HY57V643220D Datasheet, PDF (5/13 Pages) Hynix Semiconductor – 4Banks x 512K x 32bits Synchronous DRAM

HY57V643220D(L/S)T(P) Series
4Banks x 512K x 32bits Synchronous DRAM
FUNCTIONAL BLOCK DIAGRAM
512Kbit x 4banks x 32 I/O Low Power Synchronous DRAM
CLK
CKE
CS
RAS
CAS
WE
DQM0~3
Self refresh
logic & timer
Internal Row
Counter
Row Active
Row
Pre
Decoder
Refresh
Column Active
Column
Pre
Decoder
512Kx32 BANK 3
512Kx32 BANK 2
512Kx32 BANK 1
512Kx32 BANK 0
Memory
Cell
Array
Y-Decoder
DQ0
DQ31
Bank Select
Column Add
Counter
A0
Address
A1
Register
Burst
Counter
Pipe Line
A10
Mode Register
CAS Latency
Data Out Control
Control
BA1
BA0
Rev. 0.3 / Sep. 2004
5