LPC55S2X datasheet(106/140 Pages) NXP

106 / 140 page

LPC55S2x/LPC552x

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Product data sheet

Rev. 2.2 — 8 December 2022

106 of 139

NXP Semiconductors

LPC55S2x/LPC552x

32-bit ARM Cortex-M33 microcontroller

[8] The full-scale error voltage or gain error (EG) is the difference between the straight-line fitting the actual

transfer curve after removing offset error, and the straight line which fits the ideal transfer curve.

[9] Input data is 1kHz sine wave, ADC conversion clock 24 MHz, Power Select = 3, Average setting = 4.

[10] Value of ADC_CFG[PUDLY] * 4 * ADCclk must be > tADCSTUP.

[11] To use temperature sensor, the maximum fclk(ADC) frequency is 6 MHz.

12.2.1 ADC input resistance (Please refer to the ADC Inputs Selection & ADC

programming table in the UM)

12.3 Temperature sensor

The ADC has a dedicated input channel for an on-chip temperate sensor that is mapped

on channel 26.

[1] Absolute temperature accuracy. Based on characterization, not tested in production.

Table 41. ADC input resistance

Tamb = 40 C to +105 C

Min

Typ

Max

Unit

input resistance

Fast Input Channels

PIO0_16/PIO0_23 -

k

PIO0_11/PIO0_10 -

k

PIO0_12/PIO0_15 -

k

PIO1_0/PIO0_31 -

k

Standard Input Channels

PIO1_9/PIO1_8 -

1.4

3.6

k

Fig 24. Comparator Hysteresis

Table 42. Temperature sensor static and dynamic characteristics

VBAT_PMU = VBAT_DCDC = VDD = 3.0 V

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

DTsen

sensor

temperature

accuracy

Tamb = 40 C to +105 C

[1] -



ts(pu)

power-up

settling time

[2] -



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