Datasheet

Chapter 8 Analog-to-Digital Converter (ATD10B8C) Block Description

Freescale Semiconductor MC9S12C-Family / MC9S12GC-Family 225

Rev 01.24

8.2 Signal Description

The ATD10B8C has a total of 12 external pins.

8.2.1 AN7 / ETRIG / PAD7

This pin serves as the analog input channel 7. It can be conﬁgured to provide an external trigger for the

ATD conversion. It can be conﬁgured as general-purpose digital I/O.

8.2.2 AN6 / PAD6

This pin serves as the analog input channel 6. It can be conﬁgured as general-purpose digital I/O.

8.2.3 AN5 / PAD5

This pin serves as the analog input channel 5. It can be conﬁgured as general-purpose digital I/O.

8.2.4 AN4 / PAD4

This pin serves as the analog input channel 4. It can be conﬁgured as general-purpose digital I/O.

8.2.5 AN3 / PAD3

This pin serves as the analog input channel 3. It can be conﬁgured as general-purpose digital I/O.

8.2.6 AN2 / PAD2

This pin serves as the analog input channel 2. It can be conﬁgured as general-purpose digital I/O.

8.2.7 AN1 / PAD1

This pin serves as the analog input channel 1. It can be conﬁgured as general-purpose digital I/O.

8.2.8 AN0 / PAD0

This pin serves as the analog input channel 0. It can be conﬁgured as general-purpose digital I/O.

8.2.9 V

, V

is the high reference voltage and V

is the low reference voltage for ATD conversion.

8.2.10 V

DDA

, V

SSA

These pins are the power supplies for the analog circuitry of the ATD10B8C block.