K4H281638B-TCB0000 Samsung Semiconductor, K4H281638B-TCB0000 Datasheet - Page 15

• Manufacturer Part Number: K4H281638B-TCB0000
• Manufacturer: Samsung Semiconductor

Specifications of K4H281638B-TCB0000

• Lead Free Status / Rohs Status: Supplier Unconfirmed

128Mb DDR SDRAM
3. Functional Description
3.1 Simplified State Diagram
POWER
APPLIED
REGISTER
MODE
SET
POWER
WRITEA
ON
POWER
DOWN
WRITEA
WRITEA
WRITE
CKE L
Figure 3. State diagram
WRITE
MRS
PRE
CKEH
WRITEA
PRE
- 15 -
CHARGE
ACTIVE
ROW
IDLE
ACT
PRE
PRE
READ
READA
READA
CKEH
PRE
REFS
BURST STOP
R E A D
REFA
CKEL
REFSX
READA
READ
REFRESH
POWER
DOWN
WRITEA : Write with autoprecharge
READA : Read with autoprecharge
READA
SELF
REV. 1.31 Nov. 3. 2001
REFRESH
AUTO
Automatic Sequence
Command Sequence