k4h280438d Samsung Semiconductor, Inc., k4h280438d Datasheet - Page 15

• Manufacturer Part Number: k4h280438d
• Description: 128mb D-die X4/8 Ddr Sdram
• Manufacturer: Samsung Semiconductor, Inc.

128Mb D-die(x4/8) DDR SDRAM
*1 : MRS can be issued only at all bank precharge state.
*2 : Minimum
Mode Register Set
Command
t
RP
CK
CK
is required to issue MRS command.
Length
Burst
2
4
8
0
t
CK
Precharge
Address(A2, A1, A0)
All Banks
Table 4. Burst address ordering for burst length
1
Starting
x00
x01
x10
x11
000
001
010
011
100
101
110
111
xx0
xx1
Burst Address Ordering for Burst Length
Figure 6. Mode Register Set sequence
t
RP
*2
2
Register Set
*1
Mode
- 15 -
0, 1, 2, 3, 4, 5, 6, 7
1, 2, 3, 4, 5, 6, 7, 0
2, 3, 4, 5, 6, 7, 0, 1
3, 4, 5, 6, 7, 0, 1, 2
4, 5, 6, 7, 0, 1, 2, 3
5, 6, 7, 0, 1, 2, 3, 4
6, 7, 0, 1, 2, 3, 4, 5
7, 0, 1, 2, 3, 4, 5, 6
3
Sequential Mode
2 Clock min.
0, 1, 2, 3
1, 2, 3, 0
2, 3, 0, 1
3, 0, 1, 2
0, 1
1, 0
4
Command
Any
5
0, 1, 2, 3, 4, 5, 6, 7
1, 0, 3, 2, 5, 4, 7, 6
2, 3, 0, 1, 6, 7, 4, 5
3, 2, 1, 0, 7, 6, 5, 4
4, 5, 6, 7, 0, 1, 2, 3
5, 4, 7, 6, 1, 0, 3, 2
6, 7, 4, 5, 2, 3, 0, 1
7, 6, 5, 4, 3, 2, 1, 0
Interleave Mode
0, 1, 2, 3
1, 0, 3, 2
2, 3, 0, 1
3, 2, 1, 0
REV. 0.3 Jan.31. 2001
6
0, 1
1, 0
7
8