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touch, test, invent Series Instruments Declassification and Security Instructions
4
077086201 / July 2019
Volatile memory devices
The following table lists the volatile memory devices in the TTI products and memory-related information.
Type and
minimum size
Function
User
modifiable
Data input
method
Location
To clear
To sanitize
DDR2 SDRAM
256 MB
(master)
Temporary memory
used by the
microprocessor
controller for internal
processor
operations (on the
microprocessor chip)
No
None
U16 and U17
on 2450-140
Digital board
Turn
instrument
power off
Turn instrument
power off
DDR2 SDRAM
128 MB
(blaster)
Temporary memory
used by the
microprocessor
controller for internal
processor
operations (on the
microprocessor chip)
No
None
U4 and U5 on
2450-140
Digital board
Turn
instrument
power off
Turn instrument
power off
DDR2 SDRAM
128 MB
(display)
Temporary memory
used by the
microprocessor
controller for internal
processor
operations (on the
microprocessor chip)
No
None
U4 and U5 on
2450-110 or
389536900
Display board
Turn
instrument
power off
Turn instrument
power off
Nonvolatile memory devices
The following table lists nonvolatile memory devices and memory-related information. If the table indicates that
a device can be cleared by the user, see the detailed instructions in
(on page 5).
Type and
minimum size
Function
User
modifiable
Data input
method
Location
To clear
To sanitize
NOR FLASH
embedded
memory, 32 MB
(master)
Contains calibration
data and user
settings
Yes
Front-
panel or
remote
interface
control
U58 on the
2450-140
Digital board
Follow the
"Clearing data"
procedures
Remove chip
NOR FLASH
embedded
memory, 32 MB
(blaster)
Contains calibration
data and user
settings
Yes
U14 on the
2450-140
Digital board
Follow the
"Clearing data"
procedures
Remove chip
NOR FLASH
embedded
memory, 32 MB
(display)
Contains some user
settings
Yes
U14 on the
2450-110 or
389536900
Display board
Follow the
"Clearing data"
procedures
Remove chip
Flash-based
FPGA
Programmable logic No
Firmware
upgrade
process
U68 on
2040-100
board
U2 on
2450-100
board
Requires Actel
ProASIC3
programmer to
J46 (on
2040-100) or
J829 (on
2450-100)
Remove chip