MT8VDDT6432UY-5K1 Micron Technology Inc, MT8VDDT6432UY-5K1 Datasheet - Page 7

• Manufacturer Part Number: MT8VDDT6432UY-5K1
• Description: MODULE DDR 256MB 100-DIMM
• Manufacturer: Micron Technology Inc

Specifications of MT8VDDT6432UY-5K1

• Memory Type: DDR SDRAM
• Memory Size: 256MB
• Speed: 400MT/s
• Package / Case: 100-DIMM
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 4:
pdf: 09005aef80745603, source: 09005aef807455eb
DD8C32_64_128x32UG_2.fm - Rev. G 5/05 EN
1, 3, 6, 7, 9,10, 13, 15, 34, 36,
39, 40, 42, 43, 46, 48, 51, 53,
56, 57, 59, 60, 63, 65, 84, 86,
21
(256MB,
89, 90, 92, 93, 96, 98
26-29, 71-74, 76, 77
Pin Numbers
17, 18, 67, 68
54, 62, 87, 95
4, 12, 37, 45
32, 79, 81
20, 70
33, 82
31, 78
512MB), 23, 24,
49
Pin Descriptions
Pin numbers may not correlate with symbols; refer to Figure 3 on page 6 for more information
WE#, CAS#, RAS#
(256MB, 512MB)
DQS0–DQS3
CKE0, CKE1
DQ0–DQ31
CK0, CK0#,
DM0–DM3
CK1, CK1#
BA0, BA1
Symbol
(128MB)
S0#, S1#
A0–A11
A0–A12
SA0
128MB, 256MB, 512MB: (x32, DR) 100-Pin DDR UDIMM
Output
Output
Input/
Input/
Input
Input
Input
Input
Input
Input
Input
Input
Type
Command Inputs: RAS#, CAS#, and WE# (along with S#) define
the command being entered.
Clock: CK, CK# are differential clock inputs. All address and
control input signals are sampled on the crossing of the
positive edge of CK,and negative edge of CK#. Output data
(DQ and DQS) is referenced to the crossings of CK and CK#.
Clock Enable: CKE HIGH activates and CKE LOW deactivates
the internal clock, input buffers and output drivers. Taking
CKE LOW provides PRECHARGE POWER-DOWN and SELF
REFRESH operations (all device banks idle), or ACTIVE POWER-
DOWN (row ACTIVE in any device bank).CKE is synchronous
for POWER-DOWN entry and exit, and for SELF REFRESH entry.
CKE is asynchronous for SELF REFRESH exit and for disabling
the outputs. CKE must be maintained HIGH throughout read
and write accesses. Input buffers (excluding CK, CK#, and CKE)
are disabled during POWER-DOWN. Input buffers (excluding
CKE) are disabled during SELF REFRESH. CKE is an SSTL_2 input
but will detect an LVCMOS LOW level after V
until CKE is first brought HIGH. After CKE is brought HIGH, it
becomes an SSTL_2 input only.
Chip Selects: S# enables (registered LOW) and disables
(registered HIGH) the command decoder. All commands are
masked when S# is registered HIGH. S# is considered part of
the command code.
Bank Address: BA0 and BA1 define to which device bank an
ACTIVE, READ, WRITE, or PRECHARGE command is being
applied.
Address Inputs: Provide the row address for ACTIVE
commands, and the column address and auto precharge bit
(A10) for READ/WRITE commands, to select one location out
of the memory array in the respective device bank. A10
sampled during a PRECHARGE command determines whether
the PRECHARGE applies to one device bank (A10 LOW, device
bank selected by BA0, BA1) or all device banks (A10 HIGH).
The address inputs also provide the op-code during a MODE
REGISTER SET command. BA0 and BA1 define which mode
register (mode register or extended mode register) is loaded
during the LOAD MODE REGISTER command.
Data Strobe: Output with READ data, input with WRITE data.
DQS is edge-aligned with READ data, centered in WRITE data.
Used to capture data.
Data Write Mask. DM LOW allows WRITE operation. DM HIGH
blocks WRITE operation. DM lines do not affect READ
operation.
Data I/Os: Data bus.
Presence-Detect Address Inputs: These pins are used to
configure the presence-detect device.
7
Micron Technology, Inc., reserves the right to change products or specifications without notice.
Pin Assignments and Descriptions
Description
©2004, 2005 Micron Technology, Inc. All rights reserved.
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