K4H281638L-LCB3 SAMSUNG [Samsung semiconductor], K4H281638L-LCB3 Datasheet - Page 12

• Manufacturer Part Number: K4H281638L-LCB3
• Description: 128Mb L-die DDR SDRAM Specification
• Manufacturer: SAMSUNG [Samsung semiconductor]

K4H281638L
Mode Register Set
Command
CK
CK
Length
Burst
2
4
8
*1 : MRS can be issued only at all bank precharge state.
*2 : Minimum tRP is required to issue MRS command.
0
t
CK
Precharge
All Banks
Starting Address(A2,
1
Burst Address Ordering for Burst Length
A1, A0)
x00
x01
x10
000
001
010
011
100
101
110
xx0
xx1
x11
111
t
RP
*2
2
Register Set
*1
Mode
3
12 of 32
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
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
6
0, 1
1, 0
Rev. 1.2 Feburary 2009
DDR SDRAM
7
8