MC9S12Q128_10 Datasheet, PDF (223/644 Pages) Freescale Semiconductor, Inc – HCS12 Microcontrollers

Chapter 8
Analog-to-Digital Converter (ATD10B8C)
Block Description
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.
The block is designed to be upwards compatible with the 68HC11 standard 8-bit A/D converter. In
addition, there are new operating modes that are unique to the HC12 design.
8.1.1 Features
• 8/10-bit resolution.
• 7 µsec, 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 eight analog input channels.
• Analog/digital input pin multiplexing.
• 1-to-8 conversion sequence lengths.
• Continuous conversion mode.
• Multiple channel scans.
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.
Freescale Semiconductor
MC9S12Q128
223
Rev 1.10