LK204-7T-1U-GW Matrix Orbital, LK204-7T-1U-GW Datasheet - Page 25

• Manufacturer Part Number: LK204-7T-1U-GW
• Description: DISPLAY
• Manufacturer: Matrix Orbital

Specifications of LK204-7T-1U-GW

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 635-1057

Matrix Orbital
Syntax
Parameters
Description
Remembered
Examples
This command sets the RS-232 port to a non-standard baud rate. The
command accepts a two byte parameter that goes directly into the
modules baud generator. Use the formula, speed =
calculate the [speed] for any baud rate setting. The speed can be
anywhere from 12 to 2047 which corresponds to a baud range of 977 to
153,800 baud. Setting the baud rate out of this range could cause the
display to stop working properly and require the Manual Override
jumper to be set.
Always
Crystal Speed 16 Mhz
Desired BAUD 13,500
Crystal Speed 8 Mhz
Desired BAUD 13,500
NOTES
Hexadecimal
Decimal
Parameter
speed
• LSB = 0x4A (rounded)
• MSB = 0x00
• Inteded Baud Rate: 13,500 baud
• Results from the formula are rounded down to the nearest whole number (i.e 73.07
• This formula becomes less acurate as baud rates increase, due to rounding.
• Place the speed result backwards into the formula to receive the actual baud rate.
• The actual baud rate must be within 3% of the intended baud rate for the device to
speed =
= 73).
(Baud =
communicate.
8,000,000
8(73+1)
speed = 74.07
=13,675
8 ∗ DesiredBaud
CrystalSpeed
8(speed+1)
crystalspeed
0xFE 0xA4 [speed]
254 164 [speed]
LK204-7T-1U
Length
2
1
)
Percent Difference: 1.8%
Description
Inputed LSB MSB from baud rate
formula (12-2047).
1
speed =
Actual Baud Rate:
speed = 73.07
8, 000, 000
8 ∗ 13, 500
8×DesiredBaud
CrystalSpeed
1
1 to
20