HY5DU12422BT_06 Datasheet, PDF (7/31 Pages) Hynix Semiconductor – 512Mb DDR SDRAM

FUNCTIONAL BLOCK DIAGRAM (64Mx8)
4Banks x 16Mbit x 8 I/O Double Data Rate Synchronous DRAM
1HY5DU12422B(L)T
HY5DU12822B(L)T
HY5DU121622B(L)T
CLK
/CLK
CKE
/CS
Command
/RAS
Decoder
/CAS
/WE
DM
Bank
Control
Mode
Register
Row
Decoder
Write Data Register
8
2-bit Prefetch Unit
16
16Mx8/Bank0
16Mx8/Bank1
16Mx8/Bank2
16Mx8/Bank3
16 8
DS
DQ [0:7]
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. 1.1 / Apr. 2006
7