HY5DU12422AT Datasheet, PDF (6/33 Pages) Hynix Semiconductor – 512Mb DDR SDRAM

FUNCTIONAL BLOCK DIAGRAM (128Mx4)
4Banks x 32Mbit x 4 I/O Double Data Rate Synchronous DRAM
HY5DU12422A(L)T
HY5DU12822A(L)T
HY5DU121622A(L)T
CLK
/CLK
CKE
/CS
/RAS
/CAS
/WE
DM
Command
Decoder
Bank
Control
Mode
Register
Row
Decoder
Write Data Register
4
2-bit Prefetch Unit
8
32Mx4/Bank0
32Mx4/Bank1
32Mx4/Bank2
32Mx4/Bank3
8
4
DS
DQ [0:3]
A0~A12
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. 0.0/Feb. 2003
6