MEC1322 Datasheet, PDF (368/456 Pages) Microchip Technology – Keyboard and Embedded Controller for Notebook PC

MEC1322
33.0 ANALOG TO DIGITAL CONVERTER
33.1 Introduction
This block is designed to convert external analog voltage readings into digital values. It consists of a single successive-
approximation Analog-Digital Converter that can be shared among five inputs.
Note: Transitions on ADC GPIOs are not permitted when Analog to Digital Converter readings are being taken.
33.2 References
No references have been cited for this chapter
33.3 Terminology
No terminology is defined for this chapter
33.4 Interface
This block is designed to be accessed externally via the pin interface and internally via a registered host interface.
FIGURE 33-1:
I/O DIAGRAM OF BLOCK
Host Interface
Analog to Digital Converter
Power, Clocks and Reset
Signal Description
Interrupts
33.5 Signal Description
The Signal Description Table lists the signals that are typically routed to the pin interface.
TABLE 33-1: SIGNAL DESCRIPTION TABLE
Name
Direction
Description
ADC 4:0
Input
ADC Analog Voltage Input 4:0 from pins
Note: VREF_ADC, the Analog Voltage Reference of 3.0V, is internally generated in the IP block.
DS00001719D-page 368
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