HY5DU28422ET Datasheet, PDF (6/35 Pages) Hynix Semiconductor – 128Mb DDR SDRAM

FUNCTIONAL BLOCK DIAGRAM (32Mx4)
4Banks x 8Mbit x 4 I/O Double Data Rate Synchronous DRAM
HY5DU28422ET
HY5DU28822ET
HY5DU281622ET
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
8Mx4/Bank2
8Mx4/Bank3
8
4
DS
DQ [0:3]
ADD
BA0, BA1
Address
Buffer
Column Decoder
Column Address
Counter
CLK_DLL
DS
CLK
DLL
/CLK Block
DQS
Data Strobe
Transmitter
Data Strobe
Receiver
Mode
Register
Rev. 0.5 /Apr. 2006
6