K4H561638H Datasheet, PDF (7/24 Pages) Samsung semiconductor – 256Mb H-die DDR SDRAM Specification

K4H561638H
Only for Aisin-AW
6.0 Block Diagram ( 4Mb x 16 I/O x4 Banks )
Preliminary
Industrial DDR SDRAM
CK, CK
ADD
Bank Select
CK, CK
x16
Data Input Register
Serial to parallel
x32
2Mx32
2Mx32
x32
2Mx32
2Mx32
LWE
L(U)DM
x16
x16
DQi
Column Decoder
Latency & Burst Length
LCKE
LRAS LCBR LWE
Programming Register
LCAS
Timing Register
LWCBR
CK, CK
DM Input Register
Data Strobe
CK, CK CKE
CS
RAS CAS
WE
L(U)DM
Rev. 1.2 January 2006