AN113
Rev 1.0 | Page 15 / 34
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Figure 17. Configuring the Normal Scheme Based on LED On/Off Scheme
1.
Start from CMT2150A – Basic Mode – LED On/Off Configuration
2.
Change the Button Mode from Toggle to Normal, please note that by changing this, the Study Button is changed to
Pin12(K0) by default.
3.
Change the Number of Button(s) from 5 to 4
4.
Burn the configuration to the CMT2150A-EM
5.
Burn the CMT2250A – Basic Mode – LED On/Off Configuration to the CMT2250A-EM
After the programming is done, the CMT2150A-EM and CMT2250A-EM can be used in normal scheme with the following
items to be noticed.
1.
Since the push button, which should be connected to Pin12(K0), is not designed on the CMT2150A-EM V1.0, with the
configuration steps introduced above, the LED1 on the CMT2250A-EM cannot be controlled. Only K1, K2 and K3 are
available to control the LED2, LED3 and LED4 (with the Data Pin Reset Code set to 0000), see Table 7 for the description
of the push buttons.
2.
Proper configuration of the Data Pin Reset Code for the CMT2250A-EM is required if the user wants to turn off all the
LEDs at the same time. For example, if the Data Pin Reset Code is set to D0:D3 = 0100, K1 on the CMT2150A-EM
becomes the Off button to turn off all the LEDs on the CMT2250A-EM.