Section number Title Page
25.1 Introduction...................................................................................................................................................................409
25.2 Features.........................................................................................................................................................................409
25.3 Block diagram...............................................................................................................................................................409
25.4 Memory map/register definition................................................................................................................................... 410
25.4.1
DAC Data Low Register (DACx_DATnL)................................................................................................... 411
25.4.2
DAC Data High Register (DACx_DATnH).................................................................................................. 411
25.4.3
DAC Status Register (DACx_SR)................................................................................................................. 412
25.4.4
DAC Control Register (DACx_C0)............................................................................................................... 413
25.4.5
DAC Control Register 1 (DACx_C1)............................................................................................................ 414
25.4.6
DAC Control Register 2 (DACx_C2)............................................................................................................ 414
25.5 Functional description...................................................................................................................................................415
25.5.1 DAC data buffer operation.............................................................................................................................415
25.5.2 DMA operation.............................................................................................................................................. 417
25.5.3 Resets............................................................................................................................................................. 417
25.5.4 Low-Power mode operation...........................................................................................................................417
Chapter 26
Voltage Reference (VREFV1)
26.1 Introduction...................................................................................................................................................................419
26.1.1 Overview........................................................................................................................................................420
26.1.2 Features.......................................................................................................................................................... 420
26.1.3 Modes of Operation....................................................................................................................................... 420
26.1.4 VREF Signal Descriptions.............................................................................................................................421
26.2 Memory Map and Register Definition..........................................................................................................................421
26.2.1 VREF Trim Register (VREF_TRM)..............................................................................................................422
26.2.2 VREF Status and Control Register (VREF_SC)............................................................................................423
26.3 Functional Description..................................................................................................................................................424
26.3.1 Voltage Reference Disabled, SC[VREFEN] = 0........................................................................................... 424
26.3.2 Voltage Reference Enabled, SC[VREFEN] = 1............................................................................................ 424
26.4 Internal voltage regulator..............................................................................................................................................426
KL33 Sub-Family Reference Manual, Rev. 5.1, 07/2016
18 NXP Semiconductors