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KM44H16031AC-GY View Datasheet(PDF) - Samsung

Part Name
Description
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KM44H16031AC-GY
Samsung
Samsung Samsung
KM44H16031AC-GY Datasheet PDF : 49 Pages
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128Mb DDR SDRAM
Target
Burst Address Ordering for Burst Length
Burst
Starting
Length Address(A2, A1, A0)
Sequential Mode
Interleave Mode
xx0
2
xx1
0, 1
0, 1
1, 0
1, 0
x00
0, 1, 2, 3
0, 1, 2, 3
x01
4
x10
1, 2, 3, 0
2, 3, 0, 1
1, 0, 3, 2
2, 3, 0, 1
x11
3, 0, 1, 2
3, 2, 1, 0
000
0, 1, 2, 3, 4, 5, 6, 7 0, 1, 2, 3, 4, 5, 6, 7
001
1, 2, 3, 4, 5, 6, 7, 0 1, 0, 3, 2, 5, 4, 7, 6
010
2, 3, 4, 5, 6, 7, 0, 1 2, 3, 0, 1, 6, 7, 4, 5
011
3, 4, 5, 6, 7, 0, 1, 2 3, 2, 1, 0, 7, 6, 5, 4
8
100
4, 5, 6, 7, 0, 1, 2, 3 4, 5, 6, 7, 0, 1, 2, 3
101
5, 6, 7, 0, 1, 2, 3, 4 5, 4, 7, 6, 1, 0, 3, 2
110
6, 7, 0, 1, 2, 3, 4, 5 6, 7, 4, 5, 2, 3, 0, 1
111
7, 0, 1, 2, 3, 4, 5, 6 7, 6, 5, 4, 3, 2, 1, 0
Table 4. Burst address ordering for burst length
DLL Enable/Disable
The DLL must be enabled for normal operation. DLL enable is required during power-up initialization, and
upon returing to normal operation after having disabled the DLL for the purpose of debug or evaluation (upon
exiting Self Refresh Mode, the DLL is enabled automatically). Any time the DLL is enabled, 200 clock cycles
must occur before a READ command can be issued.
Output Drive Strength
The normal drive strength for all outputs is specified to be SSTL_2, Class II. Some vendors might also support
a weak driver strength option, intended for lighter load and/or point-to-point environments. I-V curves for the
normal drive strength and weak drive strength will be included in a future revision of this document.
Mode Register Set
0
1
2
3
4
5
6
7
8
CK
CK
Command
Precharge
All Banks
*1
Mode
Register Set
Any
Command
tCK
tRP*2
2 Clock min.
*1 : MRS can be issued only at all bank precharge state.
*2 : Minimum tRP is required to issue MRS command.
Figure 6. Mode Register Set sequence
- 16 of 63 -
REV. 0.61 August 9. '99
 

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