H5DU2562GFR
FUNCTIONAL BLOCK DIAGRAM (16Mx16)
4Banks x 4Mbit x 16 I/O Double Data Rate Synchronous DRAM
Write Data Register
Mode
2-bit Prefetch Unit
Register
32
16
LDM,
UDM
LDQS,
UDQS
Input Buffer
4Mx16 BANK 3
CLK
/CLK
CKE
/CS
/RAS
/CAS
/WE
Bank
Control
Comman
d
Decoder
4Mx16 BANK 2
4Mx16 BANK 1
4Mx16 BANK 0
Mode
Register
Row
Decoder
Sense AMP
Sense AMPSense AMP
Sense AMP
2-bit Prefetch Unit
DQ0
Output Buffer
32
16
Memory
Cell
Array
DQ15
A0
A1
Address
Buffer
A
max
BA0
BA1
Column Address
Counter
CLK,
/CLK
Column
Decoder
UDQS,
LDQS
CLK_DLL
UDQS,
LDQS
Data Strobe
Transmitter
Data Strobe
Receiver
DLL
Block
Mode
Register
Rev. 1.1 /Sep. 2007
6