AN4461 datasheet(53/70 Pages) STMICROELECTRONICS

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AN4461

User interface

9.3.5

ad - get last ADC samples

Command used to retrieve the value of the last analog to digital conversion in all ADC

channels. The output value is the digital value acquired directly from the ADC registers.

Syntax: ad

Parameters: none

Output:

CH0=28 CH1=287 CH2=0 CH3=0 CH4=0 CH5=855 CH6=933 CH7=0

Default: none

Example: ad

9.3.6

ti - time since power-on

The command shows the STLUX385A device up time. The output is composed of two parts,

separated by the comma sign. The first part shows the number of seconds elapsed since

power-on or reset. The second part represents the microseconds within the second.

Syntax: ti

Parameters: none

Output:

Default: none

Example: ti

Table 18. ADC samples

Channel

Monitor signal

(on schematic)

Target value

result

Target value

unit

Value

CH0

PFC_OUT

408 V

912

V = CH0 * 0.448 V

CH1

CN_CNT

Variable

V = CH1 * 1.2219 mV

CH2

Vf (D_CH0)

Variable

V = CH2 * 0.11845 on J4 (total Vf on LED strings)

CH3

V_IN -rectified Vac

Variable

V = CH3 * 0.448 V

CH4

A - 0 - 10 V

Variable

V = CH4 * 1.22189 mV

CH5

VD_14

14 V

849

V = CH5 * 16.5 mV

CH6

VCC

3.3 V

953

V = CH6 * 3.462 mV

CH7

Not used

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