K4D261638E Datasheet, PDF (6/16 Pages) Samsung semiconductor – 2M x 16Bit x 4 Banks Double Data Rate Synchronous DRAM

K4D261638E
BLOCK DIAGRAM (2Mbit x 16I/O x 4 Bank)
128M DDR SDRAM
CK,CK
ADDR
Bank Select
CK, CK
16
Intput Buffer
Data Input Register
Serial to parallel
LWE
LDMi
2Mx16
2Mx16
2Mx16
2Mx16
32
16
x16
DQi
Column Decoder
Latency & Burst Length
LCKE
LRAS LCBR LWE
LCAS
Programming Register
LWCBR
Timing Register
DLL
CK,CK
LDMi
Data Strobe
CK,CK CKE CS RAS CAS WE LDM UDM
-6-
Rev. 1.2 (Jul. 2003)