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PDF V58C2512SB Datasheet ( Hoja de datos )

Número de pieza V58C2512SB
Descripción High Performance 512M-Bit DDR SDRAM
Fabricantes ProMOS Technologies 
Logotipo ProMOS Technologies Logotipo
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V58C2512SB datasheet

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V58C2512SB pdf
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ProMOS TECHNOLOGIES
V58C2512(804/404/164)SB
Block Diagram
64M x 8
Column Addresses
A0 - A9, A11, AP, BA0, BA1
Row Addresses
A0 - A12, BA0, BA1
Column address
counter
Column address
buffer
Row address
buffer
Refresh Counter
Row decoder
Memory array
Bank 0
8192 x 2048
Row decoder
Memory array
Bank 1
8192 x 2048
Row decoder
Memory array
Bank 2
8192 x 2048
Row decoder
Memory array
Bank 3
8192 x 2048
CK, CK
DQS
Input buffer Output buffer
DLL
Strobe
Gen.
DQ0-DQ7
Data Strobe
Control logic & timing generator
V58C2512(804/404/164)SB Rev. 1.4 March 2007
5

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V58C2512SB arduino
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ProMOS TECHNOLOGIES
V58C2512(804/404/164)SB
Mode Register Set Timing
T0 T1 T2 T3 T4 T5 T6 T7 T8 T9
tCK tRP
tMRD
CK, CK
Command
Pre- All
MRS/EMRS
ANY
Mode Register set (MRS) or Extended Mode Register Set (EMRS) can be issued only when all banks are in the idle state.
If a MRS command is issued to reset the DLL, then an additional 200 clocks must occur prior to issuing any new command
to allow time for the DLL to lock onto the clock.
Burst Mode Operation
Burst Mode Operation is used to provide a constant flow of data to memory locations (Write cycle), or from
memory locations (Read cycle). Two parameters define how the burst mode will operate: burst sequence and
burst length. These parameters are programmable and are determined by address bits A0—A3 during the
Mode Register Set command. Burst type defines the sequence in which the burst data will be delivered or
stored to the SDRAM. Two types of burst sequence are supported: sequential and interleave. The burst
length controls the number of bits that will be output after a Read command, or the number of bits to be input
after a Write command. The burst length can be programmed to values of 2, 4, or 8. See the Burst Length
and Sequence table below for programming information.
Burst Length and Sequence
Burst Length
2
4
8
Starting Length (A2, A1, A0)
xx0
xx1
x00
x01
x10
x11
000
001
010
011
100
101
110
111
Sequential Mode
0, 1
1, 0
0, 1, 2, 3
1, 2, 3, 0
2, 3, 0, 1
3, 0, 1, 2
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
Interleave Mode
0, 1
1, 0
0, 1, 2, 3
1, 0, 3, 2
2, 3, 0, 1
3, 2, 1, 0
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
V58C2512(804/404/164)SB Rev. 1.4 March 2007
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