Datasheet
LPC15XX All information provided in this document is subject to legal disclaimers. © NXP B.V. 2014. All rights reserved.
Product data sheet Rev. 1 — 19 February 2014 81 of 99
NXP Semiconductors
LPC15xx
32-bit ARM Cortex-M3 microcontroller
[1] Absolute temperature accuracy.
[2] Typical values are derived from nominal simulation (V
DDA
= 3.3 V; T
amb
= 27 C; nominal process models).
Maximum values are derived from worst case simulation (V
DDA
= 2.6 V; T
amb
= 105 C; slow process
models).
[3] Internal voltage reference must be powered before the temperature sensor can be turned on.
[4] Settling time applies to switching between comparator and ADC channels.
[1] Measured over matrix samples.
[2] Measured for samples over process corners.
Table 27. Temperature sensor static and dynamic characteristics
V
DDA
= 2.4 V to 3.6 V
Symbol Parameter Conditions Min Typ Max Unit
DT
sen
sensor
temperature
accuracy
T
amb
= 40 C to +105 C
[1]
-- 5 C
E
L
linearity error T
amb
= 40 C to +105 C- - 5 C
t
s(pu)
power-up
settling time
to 99% of temperature
sensor output value
[2][3]
-81110s
Table 28. Temperature sensor Linear-Least-Square (LLS) fit parameters
V
DDA
= 2.4 V to 3.6 V
Fit parameter Range Min Typ Max Unit
LLS slope T
amb
= 40 C to +105 C
[1]
- -2.29 - mV/C
LLS intercept at 0 CT
amb
= 40 C to +105 C
[1]
- 577.3 - mV
Value at 30 C
[2]
502 - 514 mV
V
DDA
= 3.3 V; measured on matrix samples.
Fig 43. LLS fit of the temperature sensor output voltage
aaa-011334
-40 -10 20 50 80 110
0
200
400
600
800
temperature (°C)
V
O
V
O
(mV)
(mV)
(mV)
Measured temperature sensor output
Measured temperature sensor output
measured temperature sensor output
LLS fit
LLS fit
LLS fit