PK202-25 Matrix Orbital, PK202-25 Datasheet - Page 36

• Manufacturer Part Number: PK202-25
• Description: LCD Character Display Modules Black Background Yel/Grn Text
• Manufacturer: Matrix Orbital
• Series: PK202-25r

Specifications of PK202-25

• Character Count X Line: 20 x 2
• Module Size (w X H X T): 116 mm x 37 mm x 25.73 mm
• Background Color: Black
• Backlight Type: LED Yellow / Green
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

7.4.2 Search command (254 200 2)
return one or more “Display return protocol” packets containing either an error code or addresses of 1-wire
packets.
Matrix Orbital
The received data is sent back using the “Display return protocol”.
This is used to find the addresses of all 1-Wire devices on the bus. After this command the display will
Bit
7
6
5
4
3
2
1
0
Assume last received byte is a CRC8 and validate it
Add a CRC8 to the end of the transmitted data
Code
0x00
0x01
0x02
0x03
Table 18: 1-Wire Error Codes
Table 17: 1-Wire Flags
Reset bus before transaction
(0 for future compatibility)
(0 for future compatibility)
Unknown 1-Wire Command
No devices on the bus
PK202-25
Fatal search error
Description
Description
Unused
Success
32