The temperature sensor measures die temperature over the temperature range of the device. Linearity compensation can be implemented if required by the application.

Listed here are the main features for TEMP:

  • Temperature range is greater than or equal to operating temperature of the device
  • Resolution is 0.25 degrees

TEMP is started by triggering the START task.

When the temperature measurement is completed, a DATARDY event will be generated and the result of the measurement can be read from the TEMP register.

To achieve the measurement accuracy stated in the electrical specification, the crystal oscillator must be selected as the HFCLK source, see CLOCK — Clock control for more information.

When the temperature measurement is completed, TEMP analog electronics power down to save power.

TEMP only supports one-shot operation, meaning that every TEMP measurement has to be explicitly started using the START task.

Registers

Instances

Instance Base address Description
TEMP 0x4000C000

Temperature sensor

Register overview

Register Offset Description
TASKS_START 0x000

Start temperature measurement
TASKS_STOP 0x004

Stop temperature measurement
EVENTS_DATARDY 0x100

Temperature measurement complete, data ready
INTENSET 0x304

Enable interrupt
INTENCLR 0x308

Disable interrupt
TEMP 0x508

Temperature in °C (0.25° steps)
A0 0x520

Slope of first piecewise linear function
A1 0x524

Slope of second piecewise linear function
A2 0x528

Slope of third piecewise linear function
A3 0x52C

Slope of fourth piecewise linear function
A4 0x530

Slope of fifth piecewise linear function
A5 0x534

Slope of sixth piecewise linear function
B0 0x540

y-intercept of first piecewise linear function
B1 0x544

y-intercept of second piecewise linear function
B2 0x548

y-intercept of third piecewise linear function
B3 0x54C

y-intercept of fourth piecewise linear function
B4 0x550

y-intercept of fifth piecewise linear function
B5 0x554

y-intercept of sixth piecewise linear function
T0 0x560

End point of first piecewise linear function
T1 0x564

End point of second piecewise linear function
T2 0x568

End point of third piecewise linear function
T3 0x56C

End point of fourth piecewise linear function
T4 0x570

End point of fifth piecewise linear function

TASKS_START

Address offset: 0x000

Start temperature measurement

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID A
Reset 0x00000000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
ID R/W Field Value ID Value Description
A

W

TASKS_START

Start temperature measurement

Trigger

1

Trigger task

TASKS_STOP

Address offset: 0x004

Stop temperature measurement

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID A
Reset 0x00000000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
ID R/W Field Value ID Value Description
A

W

TASKS_STOP

Stop temperature measurement

Trigger

1

Trigger task

EVENTS_DATARDY

Address offset: 0x100

Temperature measurement complete, data ready

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID A
Reset 0x00000000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
ID R/W Field Value ID Value Description
A

RW

EVENTS_DATARDY

Temperature measurement complete, data ready

NotGenerated

0

Event not generated

Generated

1

Event generated

INTENSET

Address offset: 0x304

Enable interrupt

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID A
Reset 0x00000000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
ID R/W Field Value ID Value Description
A

RW

DATARDY

Write '1' to enable interrupt for event DATARDY

Set

1

Enable

Disabled

0

Read: Disabled

Enabled

1

Read: Enabled

INTENCLR

Address offset: 0x308

Disable interrupt

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID A
Reset 0x00000000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
ID R/W Field Value ID Value Description
A

RW

DATARDY

Write '1' to disable interrupt for event DATARDY

Clear

1

Disable

Disabled

0

Read: Disabled

Enabled

1

Read: Enabled

TEMP

Address offset: 0x508

Temperature in °C (0.25° steps)

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A
Reset 0x00000000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
ID R/W Field Value ID Value Description
A

R

TEMP

Temperature in °C (0.25° steps)

Result of temperature measurement. Die temperature in °C, 2's complement format, 0.25 °C steps.

Decision point: DATARDY

A0

Address offset: 0x520

Slope of first piecewise linear function

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID A A A A A A A A A A A A
Reset 0x00000326 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 1 0 0 1 1 0
ID R/W Field Value ID Value Description
A

RW

A0

Slope of first piecewise linear function

A1

Address offset: 0x524

Slope of second piecewise linear function

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID A A A A A A A A A A A A
Reset 0x00000348 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 1 0 0 1 0 0 0
ID R/W Field Value ID Value Description
A

RW

A1

Slope of second piecewise linear function

A2

Address offset: 0x528

Slope of third piecewise linear function

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID A A A A A A A A A A A A
Reset 0x000003AA 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 0 1 0 1 0 1 0
ID R/W Field Value ID Value Description
A

RW

A2

Slope of third piecewise linear function

A3

Address offset: 0x52C

Slope of fourth piecewise linear function

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID A A A A A A A A A A A A
Reset 0x0000040E 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 1 1 0
ID R/W Field Value ID Value Description
A

RW

A3

Slope of fourth piecewise linear function

A4

Address offset: 0x530

Slope of fifth piecewise linear function

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID A A A A A A A A A A A A
Reset 0x000004BD 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 1 1 1 1 0 1
ID R/W Field Value ID Value Description
A

RW

A4

Slope of fifth piecewise linear function

A5

Address offset: 0x534

Slope of sixth piecewise linear function

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID A A A A A A A A A A A A
Reset 0x000005A3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 1 0 1 0 0 0 1 1
ID R/W Field Value ID Value Description
A

RW

A5

Slope of sixth piecewise linear function

B0

Address offset: 0x540

y-intercept of first piecewise linear function

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID A A A A A A A A A A A A A A
Reset 0x00003FEF 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 0 1 1 1 1
ID R/W Field Value ID Value Description
A

RW

B0

y-intercept of first piecewise linear function

B1

Address offset: 0x544

y-intercept of second piecewise linear function

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID A A A A A A A A A A A A A A
Reset 0x00003FBE 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 0 1 1 1 1 1 0
ID R/W Field Value ID Value Description
A

RW

B1

y-intercept of second piecewise linear function

B2

Address offset: 0x548

y-intercept of third piecewise linear function

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID A A A A A A A A A A A A A A
Reset 0x00003FBE 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 0 1 1 1 1 1 0
ID R/W Field Value ID Value Description
A

RW

B2

y-intercept of third piecewise linear function

B3

Address offset: 0x54C

y-intercept of fourth piecewise linear function

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID A A A A A A A A A A A A A A
Reset 0x00000012 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0
ID R/W Field Value ID Value Description
A

RW

B3

y-intercept of fourth piecewise linear function

B4

Address offset: 0x550

y-intercept of fifth piecewise linear function

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID A A A A A A A A A A A A A A
Reset 0x00000124 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 1 0 0
ID R/W Field Value ID Value Description
A

RW

B4

y-intercept of fifth piecewise linear function

B5

Address offset: 0x554

y-intercept of sixth piecewise linear function

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID A A A A A A A A A A A A A A
Reset 0x0000027C 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 1 1 1 1 0 0
ID R/W Field Value ID Value Description
A

RW

B5

y-intercept of sixth piecewise linear function

T0

Address offset: 0x560

End point of first piecewise linear function

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID A A A A A A A A
Reset 0x000000E2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 0 0 0 1 0
ID R/W Field Value ID Value Description
A

RW

T0

End point of first piecewise linear function

T1

Address offset: 0x564

End point of second piecewise linear function

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID A A A A A A A A
Reset 0x00000000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
ID R/W Field Value ID Value Description
A

RW

T1

End point of second piecewise linear function

T2

Address offset: 0x568

End point of third piecewise linear function

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID A A A A A A A A
Reset 0x00000019 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 1
ID R/W Field Value ID Value Description
A

RW

T2

End point of third piecewise linear function

T3

Address offset: 0x56C

End point of fourth piecewise linear function

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID A A A A A A A A
Reset 0x0000003C 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 0 0
ID R/W Field Value ID Value Description
A

RW

T3

End point of fourth piecewise linear function

T4

Address offset: 0x570

End point of fifth piecewise linear function

Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
ID A A A A A A A A
Reset 0x00000050 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0
ID R/W Field Value ID Value Description
A

RW

T4

End point of fifth piecewise linear function

Electrical specification

Temperature Sensor Electrical Specification

Symbol Description Min. Typ. Max. Units
tTEMP

Time required for temperature measurement

 36 µs
TTEMP,RANGE

Temperature sensor range

 -40 85 °C
TTEMP,ACC

Temperature sensor accuracy

 -5 5 °C
TTEMP,RES

Temperature sensor resolution

 0.25 °C
TTEMP,STB

Sample to sample stability at constant device temperature

 -0.25 0.25 °C
TTEMP,OFFST

Sample offset at 25°C

 -2.5 2.5 °C