ACR122L – Communication Protocol
Version 1.03
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Row\Col 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 DISPLAY
POSITION
1
st
LINE 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
LCD XY
POSITION
2
nd
LINE 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F
3
rd
LINE 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F
4
th
LINE 60 61 62 63 64 65 66 67 68 69 6A 6B 6C 6D 6E 6F
Table 3
: DDRAM Address for Font Set 3
Lc
LCD Message Length.
The length of the LCD message (max. 10h); If the message length is longer than the
number of characters that the LCD screen can show, then the redundant character will
not be shown on the LCD.
Data In
LCD Message.
The data to be sent to LCD, maximum 16 Character for each line;
Please follow the Font tables (selected by INS Bit 4 - 5) below for the LCD Character
Index.
Note:
Size of the characters in Font Set A and Font Set B is 8 x 16, but size of the characters in Font
Set C is 8 x 8.
Figure 2
: Character Set A
