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8–2
For example, if you want to set S38 bit 3 to 1 for a specific application, you may
either use ATS38.3=1 (simple) or use the following method (difficult):
• Read the value from S38 using ATS38?.
• Convert it to its binary value, using the following weight table.
• To set bit 3 to 1 (binary), do a logic OR operation with the value.
• To set bit 3 to 0 (binary), you must invert the value using a logic NOT oper-
ation and then do an logic AND operation.
• Using the result decimal value, do an ATS38=n to set the register.
Note: The values used in the example below differ from the actual values
in the S-register and are used for demonstration purposes only.
Bit
Binary value Decimal value Hexadecimal value
0 00000001 1 $01
1 00000010 2 $02
2 00000100 4 $04
3 00001000 8 $08
4 00010000 16 $10
5 00100000 32 $20
6 01000000 64 $40
7 10000000 128 $80
Operation
Example 1 Example 2
Binary Dec. Hex. Binary Dec. Hex.
10001000 136 $88 01000000 64 $40
OR 00001000 8 $08 00001000 8 $08
10001000 136 $88 01001000 72 $48
NOT 00001000 8 $08 00001000 8 $08
11110111 247 $F7 11110111 247 $F7
AND 10001000 136 $88 01000000 64 $40
10000000 128 $80 01000000 64 $40
Note: If you enter values from the LCD front panel, use the hexadecimal
(hex) values.