HY5DU28422DT Datasheet, PDF (6/33 Pages) Hynix Semiconductor – 128Mb-S DDR SDRAM

FUNCTIONAL BLOCK DIAGRAM (32Mx4)
4Banks x 8Mbit x 4 I/O Double Data Rate Synchronous DRAM
HY5DU28422D(L)T
HY5DU28822D(L)T
HY5DU281622D(L)T
CLK
/CLK
CKE
/CS
Command
/RAS
Decoder
/CAS
/WE
DM
Bank
Control
Mode
Register
Row
Decoder
Write Data Register
4
2-bit Prefetch Unit
8
8Mx4/Bank0
8Mx4/Bank1
8
4
8Mx4/Bank2
8Mx4/Bank3
DS
DQ[0:3]
A0~A11
Address
Buffer
BA0,BA1
Column Decoder
Column Address
Counter
CLK_DLL
DS
CLK
DLL
/CLK
Block
DQS
Data Strobe
Transmitter
Data Strobe
Receiver
Mode
Register
Rev. 0.0 / Apr. 2003
6