mt46v128m8p-6t Micron Semiconductor Products, mt46v128m8p-6t Datasheet - Page 69

• Manufacturer Part Number: mt46v128m8p-6t
• Description: 1gb Ddr Sdram Component
• Manufacturer: Micron Semiconductor Products

Figure 41:
PDF: 09005aef80a2f898/Source: 09005aef82a95a3a
DDR_x4x8x16_Core2.fm - 1Gb DDR: Rev. I, Core DDR: Rev. B 12/07 EN
Command
Address
t
t
t
DQSS (NOM)
DQSS (MIN)
DQSS (MAX)
DQS
DQS
DQS
CK#
DM
DM
DM
WRITE-to-READ – Interrupting
DQ
DQ
DQ
CK
Notes:
Bank a,
WRITE
Col b
T0
t
t
t
1. DI b = data-in for column b; DO n = data-out for column n.
2. An interrupted burst of 4 is shown; two data elements are written.
3. One subsequent element of data-in is applied in the programmed order following DI b.
4.
5. A10 is LOW with the WRITE command (auto precharge is disabled).
6. DQS is required at T2 and T2n (nominal case) to register DM.
7. If the burst of 8 is used, DM and DQS are required at T3 and T3n because the READ com-
DQSS
DQSS
DQSS
t
mand will not mask these two data elements.
WTR is referenced from the first positive CK edge after the last data-in pair.
DI
b
NOP
T1
DI
b
DI
b
T1n
NOP
T2
t
WTR
69
T2n
Bank a,
READ
Col n
T3
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T3n
CL = 2
CL = 2
CL = 2
T4
NOP
1Gb: x4, x8, x16 DDR SDRAM
Transitioning Data
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T5
NOP
DO
DO
DO
n
n
n
T5n
Operations
T6
NOP
Don’t Care
T6n