6D301 4D SYSTEMS, 6D301 Datasheet - Page 44

• Manufacturer Part Number: 6D301
• Description: OLED DISPLAY, 128x128 PIXELS, 27mmx27mm
• Manufacturer: 4D SYSTEMS

Specifications of 6D301

• Screen Size: 38.1mm
• Resolution: 128 X 128
• Viewing Area (h X W): 27mm X 27mm
• Interface Type: Serial, USB
• Voltage Rating: 5V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

2.4.3 Write Sector Data to Memory Card
(@W)
Syntax :
extCmd, cmd, SectorAddress
, data
.. ,
(hi:mid:lo)
(1),
data
(512)
extCmd : 40
, @
hex
ascii
cmd : 57
, W
hex
ascii
SectorAddress
: A 3 byte sector address. Sector Address
(hi:mid:lo)
range from 0 to 16,777,215 depending on the capacity of the card.
Each sector is 512 bytes in size. There are 2048 sectors per every
1Mb of card memory.
data
.. , data
: 512 bytes of sector data. The data length
(1),
(512)
must be 512 bytes long. Unused bytes must be padded even if not all
are used.
Description :
This command allows downloading of objects such as
images and other commands for storage that can be retrieved and
used later on. It can also be used as general purpose storage for user
specific data. Downloads must always be limited to 512 bytes in
length. For large objects such as images, the data must be broken up
into multiple sectors (chunks of 512 bytes) and this command then
maybe used many times until all of the data is written into the card.
If the data block to be written is less than 512 bytes in length, then
make sure the rest of the remaining data are padded with 00hex or
FFhex (it can be anything).
If only few bytes of data are to be written then the Write Byte
command can be used.
Once this command message is sent, the module will take a few
milliseconds to write the data into its memory card and at the end of
which it will reply back with an ACK(06hex) if the write cycle was
successful. If there was a problem in writing the data to the card a
NAK(15hex) will be sent back without any write attempts.
Only data
to data
are stored in the card. Other bytes in the
(1)
(512)
command message such as Sector Address are not stored.
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