LPC804 datasheet(27/89 Pages) NXP

27 / 89 page

LPC804

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Product data sheet

Rev. 2.1 — 25 July 2023

27 of 87

NXP Semiconductors

LPC804

32-bit Arm Cortex-M0+ microcontroller

The ADC includes a hardware threshold compare function with zero-crossing detection.

Remark: For best performance, select VREFP and VREFN at the same voltage levels as

VDD and VSS. When selecting VREFP and VREFN different from VDD and VSS, ensure

that the voltage midpoints are the same:

(VREFP-VREFN)/2 + VREFN = VDD/2

9.22.1 Features

• 12-bit successive approximation analog to digital converter.

• 12-bit conversion rate of up to 480 KSamples/s.

• Two configurable conversion sequences with independent triggers.

• Optional automatic high/low threshold comparison and zero-crossing detection.

• Power-down mode and low-power operating mode.

• Measurement range VREFN to VREFP (not to exceed VDD voltage level).

• Burst conversion mode for single or multiple inputs.

9.23 Digital-to-Analog Converter (DAC)

The DAC supports a resolution of 10 bits. Conversions can be triggered by an external pin

input or an internal timer. The DAC includes an optional automatic hardware shut-off

feature, which forces the DAC output voltage to zero while a HIGH level on the external

DAC_SHUTOFF pin is detected.

9.23.1 Features

• 10-bit digital-to-analog converter.

• Internal timer or pin external trigger for staged, jitter-free DAC conversion sequencing.

• Automatic hardware shut-off triggered by an external pin.

LPC804 Datasheet(PDF) 27 Page - NXP Semiconductors