PC912XDP512F0MPVR datasheet(127/1348 Pages) FREESCALE

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Chapter 4 Analog-to-Digital Converter (ATD10B16CV4) Block Description

MC9S12XDP512 Data Sheet, Rev. 2.21

Freescale Semiconductor

127

4.2

External Signal Description

This section lists all inputs to the ATD10B16C block.

4.2.1

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

Channel x Pins

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

and/or external trigger for the ATD conversion.

4.2.2

ETRIG3, ETRIG2, ETRIG1, ETRIG0 — External Trigger Pins

These inputs can be conﬁgured to serve as an external trigger for the ATD conversion.

Refer to the Device Overview chapter for availability and connectivity of these inputs.

4.2.3

VRH,VRL — High Reference Voltage Pin, Low Reference Voltage Pin

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

4.2.4

VDDA, VSSA — Analog Circuitry Power Supply Pins

These pins are the power supplies for the analog circuitry of the ATD10B16CV4 block.

4.3

Memory Map and Register Deﬁnition

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

4.3.1

Module Memory Map

Table 4-1 gives an overview of all ATD10B16C registers

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