MC9S12XD256MAL Datasheet, PDF (125/1348 Pages) Freescale Semiconductor, Inc – Freescale’s Scalable Controller Area Network

Chapter 4
Analog-to-Digital Converter (ATD10B16CV4)
Block Description
4.1 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.
4.1.1 Features
• 8-/10-bit resolution
• 7 µs, 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)
4.1.2 Modes of Operation
There is software programmable selection between performing single or continuous conversion on a
single channel or multiple channels.
4.1.3 Block Diagram
Refer to Figure 4-1 for a block diagram of the ATD0B16C block.
MC9S12XDP512 Data Sheet, Rev. 2.21
Freescale Semiconductor
125