Download ASIC
This button downloads all of the data from the sensor interface to the PC. This data is from both
RAM and EEPROM.
The data must be downloaded from the sensor interface before it can be edited using the edit
parameters dialog box
If the data from the sensor interface does not appear to be correct, click on this button several
times and observe the data that is downloaded. If this data changes or is extremely slow to
download then the PC is not communicating at a close enough baud rate to the baud rate of the
chip.
Upload Ram
This button is used to upload only the RAM data to the sensor interface. Any changes to the data
from what is already in the RAM will take effect immediately. The ram data is overwritten with
data from EEPROM when the chip is reset.
Some of the locations used in RAM are for dynamic variables. This means that as soon as the
user loads values into these locations the chip’s firmware overwrites those locations with the
current operating data.
Upload EEPROM
This button is used to upload only the EEPROM data to the sensor interface. The entire block of
data, 48 bytes, is uploaded. The software automatically generates the correct checksum and
places it in byte 47 when the block is uploaded. This occurs whether or not the checksum test
has been selected. Changes to the EEPROM data do not take effect until the sensor interface has
been reset.
Load From File
This button is used to obtain previously saved data from a file. A standard dialog box is used for
locating the desired file to be loaded. Configuration data can be saved from one chip and stored
in another. The protection of the factory programmed clock settings will prevent the loaded file
from overwriting these values as they are unique for each chip. It is important to note that the
settings from one chip will not necessarily yield the same results on another chip. This is due to
the resistors implemented in silicon having about a 20% tolerance.
MLX90308CCC & MLX90314AB Software Users Manual
Rev 2.0
4
11/28/01