K4H1G0438A Datasheet, PDF (7/24 Pages) Samsung semiconductor – 1Gb A-die SDRAM Specification

K4H1G0438A
K4H1G0838A
6.0 Block Diagram (64Mbit x4 / 32Mbit x8 I/O x4 Banks)
DDR SDRAM
CK, CK
ADD
Bank Select
CK, CK
x4/8
Data Input Register
Serial to parallel
x8/16
32Mx8/ 16Mx16
32Mx8/ 16Mx16
32Mx8/ 16Mx16
32Mx8/ 16Mx16
x8/16
x4/8
LWE
LDM
x4/8
DQi
Column Decoder
Latency & Burst Length
LCKE
LRAS LCBR LWE
LCAS
Programming Register
LWCBR
LDM
CK, CK
Timing Register
DM Input Register
CK, CK CKE
CS
RAS CAS
WE
L(U)DM
Data Strobe
Rev. 1.1 January 2007