HY5DU12422BT_06 Datasheet, PDF (8/31 Pages) Hynix Semiconductor – 512Mb DDR SDRAM

FUNCTIONAL BLOCK DIAGRAM (32Mx16)
4Banks x 8Mbit x 16 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
LDM
UDM
Bank
Control
Mode
Register
Row
Decoder
Write Data Register ¹⁶
2-bit Prefetch Unit
32
8Mx16/Bank0
8Mx16/Bank1
8Mx16/Bank2
8Mx16/Bank3
32 16
DS
DQ[0:15]
A0~A12
BA0, BA1
Address
Buffer
Column Decoder
Column Address
Counter
CLK
/CLK
CLK_DLL
LDQS
UDQS
DLL
Block
LDQS, UDQS
Data Strobe
Transmitter
Data Strobe
Receiver
Mode
Register
Rev. 1.1 / Apr. 2006
8