K4H560838E Datasheet, PDF (6/24 Pages) Samsung semiconductor – DDR SDRAM 256Mb E-die (x4, x8)

DDR SDRAM 256Mb E-die (x4, x8)
Block Diagram (16Mbit x 4 / 8Mbit x 8 I/O x 4 Banks)
DDR SDRAM
CK, CK
ADD
Bank Select
CK, CK
x4/8
Data Input Register
Serial to parallel
x8/16
8Mx8/ 4Mx16
8Mx8/ 4Mx16
8Mx8/ 4Mx16
8Mx8/ 4Mx16
x8/16
x4/8
(L)WE
(L)DM
x4/8
DQi
Column Decoder
Latency & Burst Length
LCKE
LRAS LCBR LWE
Programming Register
LCAS
LWCBR
CK, CK
DM
Timing Register
Data Strobe
CK, CK CKE
CS
RAS CAS
WE
DM
Rev. 1.3 April. 2005