12-Bit Dac Instantiation Information; 12-Bit Dac Output; 12-Bit Dac Reference - NXP Semiconductors freescale KV4 Series Reference Manual

Table of Contents

12-bit Digital-to-Analog Converter (DAC)

Chip-specific 12-bit DAC information

36.1.1 12-bit DAC Instantiation Information

This device contains one 12-bit digital-to-analog converter (DAC) with programmable

reference generator output. The DAC includes a 16 deep 12bit FIFO for DMA support.

DAC0_OUT signal is connected to CMP3_IN3 and CMP1_IN3/PTE30.

DAC0_buffer_limit output signal feeds DMAUX source 45.

DAC_12B_SYNC input signals is connected to XBARA_OUT15, PDB0_DAC_trig, and

PDB1_DAC_trig outputs.

The output of the DAC can be placed on an external pin or set as one of the inputs to the

analog comparator or ADC.

For this device VREFH and VDDA are selectable as the DAC reference. VREFH is

connected to the DACREF_1 input and VDDA is connected to the DACREF_2 input.

Use DACx_C0[DACRFS] control bit to select between these two options.

It must be noted that if the DAC and ADC use the same

reference simultaneously, some degradation of ADC accuracy

is to be expected due to DAC switching.

Freescale Semiconductor, Inc.

KV4x Reference Manual, Rev. 2, 02/2015