MT4HTF6464AY-800E1 Micron Technology Inc, MT4HTF6464AY-800E1 Datasheet - Page 5
![](/photos/31/34/313449/240pin_udimm_sml.jpg)
MT4HTF6464AY-800E1
Manufacturer Part Number
MT4HTF6464AY-800E1
Description
Manufacturer
Micron Technology Inc
Datasheet
1.MT4HTF6464AY-800E1.pdf
(19 pages)
Specifications of MT4HTF6464AY-800E1
Main Category
DRAM Module
Sub-category
DDR2 SDRAM
Module Type
240UDIMM
Device Core Size
64b
Organization
64Mx64
Total Density
512MByte
Chip Density
1Gb
Access Time (max)
40ps
Maximum Clock Rate
800MHz
Operating Supply Voltage (typ)
1.8V
Operating Current
1.28A
Number Of Elements
4
Operating Supply Voltage (max)
1.9V
Operating Supply Voltage (min)
1.7V
Operating Temp Range
0C to 85C
Operating Temperature Classification
Commercial
Pin Count
240
Mounting
Socket
Lead Free Status / Rohs Status
Compliant
Table 7: Pin Descriptions (Continued)
PDF: 09005aef80ed6fda
htf4c16_32_64x64ay – Rev. H 3/10 EN
V
Err_Out#
Symbol
RDQS#x
RDQSx,
DD
V
SDA
V
DDSPD
RFU
V
NU
NC
NF
/V
REF
SS
DDQ
(open drain)
Output
Output
Supply
Supply
Supply
Supply
Type
I/O
–
–
–
–
128MB, 256MB, 512MB (x64, SR) 240-Pin DDR2 SDRAM UDIMM
Description
Serial data: Used to transfer addresses and data into and out of the SPD EEPROM on
the I
Redundant data strobe (x8 devices only): RDQS is enabled/disabled via the LOAD
MODE command to the extended mode register (EMR). When RDQS is enabled, RDQS
is output with read data only and is ignored during write data. When RDQS is disa-
bled, RDQS becomes data mask (see DMx). RDQS# is only used when RDQS is enabled
and differential data strobe mode is enabled.
Parity error output: Parity error found on the command and address bus.
Power supply: 1.8V ±0.1V. The component V
ule V
SPD EEPROM power supply: 1.7–3.6V.
Reference voltage: V
Ground.
No connect: These pins are not connected on the module.
No function: These pins are connected within the module, but provide no functionality.
Not used: These pins are not used in specific module configurations/operations.
Reserved for future use.
2
DD
C bus.
.
DD
5
/2.
Micron Technology, Inc. reserves the right to change products or specifications without notice.
DD
and V
DDQ
are connected to the mod-
© 2003 Micron Technology, Inc. All rights reserved.
Pin Descriptions