MC9S12XDP512 Data Sheet, Rev. 2.11
Freescale Semiconductor 317
Chapter 7Analog-to-Digital Converter (ATD10B16CV4)

7.1 Introduction

The ATD10B16C is a 16-channel, 10-bit, multiplexed input successive approximation analog-to-digital
converter. Refer to the Electrical Specifications chapter for ATD accuracy.

7.1.1 Features

8-/10-bit resolution
•7µs, 10-bit single conversion time
Sample buffer amplifier
Programmable sample time
Left/right justified, signed/unsigned result data
External trigger control
Conversion completion interrupt generation
Analog input multiplexer for 16 analog input channels
Analog/digital input pin multiplexing
1 to 16 conversion sequence lengths
Continuous conversion mode
Multiple channel scans
Configurable external trigger functionality on any AD channel or any of four additional trigger
inputs. The four additional trigger inputs can be chip external or internal. Refer to device
specification for availability and connectivity
Configurable location for channel wrap around (when converting multiple channels in a sequence)

7.1.2 Modes of Operation

There is software programmable selection between performing single or continuous conversion on a
single channel or multiple channels.

7.1.3 Block Diagram

Refer to Figure 7-1 for a block diagram of the ATD0B16C block.