Analog-To-Digital Converter (S08Adc12V1); Introduction; Adc Clock Gating - ROHS MC9S08QE128 Reference Manual

Chapter 10

Analog-to-Digital Converter (S08ADC12V1)

10.1

Introduction

The 12-bit analog-to-digital converter (ADC) is a successive approximation ADC designed for operation
within an integrated microcontroller system-on-chip.
Figure 10-1 shows the MC9S08QE128 Series with the ADC module and pins highlighted.
Ignore any references to stop1 low-power mode in this chapter, because the
MC9S08QE128 device does not support it.
10.1.1

ADC Clock Gating

The bus clock to the ADC can be gated on and off using the SCGC1[ADC] bit. This bit is set after any
reset, which enables the bus clock to this module. To conserve power, the ADC bit can be cleared to disable
the clock to this module when not in use. See
Freescale Semiconductor
NOTE
Section 5.7, "Peripheral Clock Gating,"
MC9S08QE128 MCU Series Reference Manual, Rev. 2
for details.
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