Texas Instruments MSP430x1xx manual 19.1 DAC12 Introduction

DAC12 Introduction

19.1 DAC12 Introduction

The DAC12 module is a 12-bit, voltage output DAC. The DAC12 can be configured in 8- or 12-bit mode and may be used in conjunction with the DMA controller. When multiple DAC12 modules are present, they may be grouped together for synchronous update operation.

Features of the DAC12 include:

-12-bit monotonic output

-8- or 12-bit voltage output resolution

-Programmable settling time vs power consumption

-Internal or external reference selection

-Straight binary or 2’s compliment data format

-Self-calibration option for offset correction

-Synchronized update capability for multiple DAC12s

Note: Multiple DAC12 Modules

Some devices may integrate more than one DAC12 module. In the case where more than one DAC12 is present on a device, the multiple DAC12 modules operate identically.

Throughout this chapter, nomenclature appears such as DAC12_xDAT or DAC12_xCTL to describe register names. When this occurs, the x is used to indicate which DAC12 module is being discussed. In cases where operation is identical, the register is simply referred to as DAC12_xCTL.

The block diagram of the two DAC12 modules in the MSP430F15x/16x devices is shown in Figure 19−1.

19-2 DAC12