M030GD2AE datasheet(50/118 Pages) NUVOTON

50 / 118 page

M030G/M031G Series

May 31, 2021

Page 50 of 118

Rev 1.00

6.2.8

Temperature Sensor

This chip is equipped with an on-chip temperature sensor. Temperature sensor control registers are

located in SYS_TSCTL and SYS_TSDATA.

User should set both TSEN(SYS_TSCTL[0]) and TSBGEN(SYS_TSCTL[1]) bits to 1 to enable the

temperature sensor. User needs to wait 200us for temperatre sensor to be stable, and then set

TSST(SYS_TSCTL[2]) bit to 1 to start temperature sensor conversion.

After temperature sensor conversion is finished, TSEOC(SYS_TSDATA[0]) bit will be set to 1

automatically, and TSDATA(SYS_TSDATA[27:16]) will present the temperature sensor data. Figure

6.2-10 shows the timing waveform of temperature sensor conversion.

TSEN

(SYS_TSCTL[0])

Tstartup

TSST

(SYS_TSCTL[2])

TSDATA

(SYS_TSDATA[27:16])

TSBGEN

(SYS_TSCTL[1])

Tconversion

st Temperature Data[11:0]

( > 200 us)

( < 100 ms)

TSEOC

(SYS_TSDATA[0])

Tconversion

( < 100 ms)

nd Temperature Data[11:0]

Clear by

hardware

st conversion

nd conversion

Clear by software

Clear by

hardware

Clear by software

Figure 6.2-10 Temperature Sensor Conversion Waveform

Table 6.2-10 is a reference table for the relationship between temperature and TSDATA. Negative

temperature is represented in TSDATA(SYS_TSDATA[27:16]) by twos complement format, and per LSB

difference is equivalent to 0.0625 ° C.

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