MC9S12KG128_10 Datasheet, PDF(221/606 Page) Freescale Semiconductor, Inc – HCS12 Microcontrollers

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MC9S12KG128_10 Datasheet, PDF (221/606 Pages) Freescale Semiconductor, Inc – HCS12 Microcontrollers

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Chapter 7 Analog-to-Digital Converter (ATD10B16CV3) Block Description

7.2 External Signal Description

This section lists all inputs to the ATD10B16C block.

7.2.1 ANx (x = 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0) â Analog Input

Channel x Pins

This pin serves as the analog input channel x. It can also be conï¬gured as general-purpose digital input

and/or external trigger for the ATD conversion.

7.2.2 ETRIG â External Trigger Pins

This input can be conï¬gured to serve as an external trigger for the ATD conversion.

Refer to device speciï¬cation for availability and connectivity of this pin.

7.2.3 VRH, VRL â High Reference Voltage Pin, Low Reference Voltage Pin

VRH is the high reference voltage, VRL is the low reference voltage for ATD conversion.

7.2.4 VDDA, VSSA â Analog Circuitry Power Supply Pins

These pins are the power supplies for the analog circuitry of the ATD10B16CV3 block.

7.3 Memory Map and Register Deï¬nition

This section provides a detailed description of all registers accessible in the ATD10B16C.

7.3.1 Module Memory Map

Table 7-1 gives an overview of all ATD10B16C registers

MC9S12KG128 Data Sheet, Rev. 1.16

Freescale Semiconductor

221

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