MC9S12XDP512 Data Sheet, Rev. 2.11
Freescale Semiconductor 347
Chapter 8Analog-to-Digital Converter (ATD10B8CV3)

8.1 Introduction

The ATD10B8C is an 8-channel, 10-bit, multiplexed input successive approximation analog-to-digital
converter. Refer to device electrical specifications for ATD accuracy.

8.1.1 Features

8/10-bit resolution
•7µsec, 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 8 analog input channels
Analog/digital input pin multiplexing
1-to-8 conversion sequence lengths
Continuous conversion mode
Multiple channel scans
Configurable external trigger functionality on any AD channel or any of four additional external
trigger inputs. The four additional trigger inputs can be chip external or internal. Refer to the device
overview chapter for availability and connectivity.
Configurable location for channel wrap around (when converting multiple channels in a sequence).

8.1.2 Modes of Operation

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