K4H560438H Datasheet, PDF (7/24 Pages) Samsung semiconductor – 256Mb H-die DDR SDRAM Specification

K4H560438H
K4H560838H
K4H561638H
6.0 Block Diagram (16Mb x 4 / 8Mb x 8 / 4Mb x 16 I/O x4 Banks)
DDR SDRAM
CK, CK
ADD
Bank Select
x4/8/16
LWE
CK, CK
Data Input Register
Serial to parallel
LDM (x4x8)
LUDM (x16)
x8/16/32
8Mx8/ 4Mx16/ 2Mx32
8Mx8/ 4Mx16/ 2Mx32
8Mx8/ 4Mx16/ 2Mx32
8Mx8/ 4Mx16/ 2Mx32
x8/16/32 x4/8/16
x4/8/16
DQi
Column Decoder
Latency & Burst Length
LCKE
LRAS LCBR LWE
LCAS
Programming Register
LWCBR
LDM (x4x8)
LUDM (x16)
CK, CK
Timing Register
DM Input Register
Data Strobe
CK, CK CKE
CS
RAS CAS
WE
LDM (x4x8)
LUDM (x16)
Rev. 1.2 January 2006