Chip-Specific Adc Information - NXP Semiconductors MC9S08SU16 Reference Manual

Chapter 17
Analog-to-digital converter (ADC)
17.1

Chip-specific ADC information

17.1.1 Analog-to-digital converter (ADC)
This device contains two analog-to-digital converters (ADC) of 12-bit, a successive
approximation ADC for operation within an integrated microcontroller system-on-chip.
The resolution can be configured to 8-, 10-, 12-bit. The fastest conversion rate at 12-bit is
2.5 µs. Single and continuous conversion with both software and hardware trigger are
supported. Each ADC supports2 result FIFO with selectable FIFO depth.
ADC clock can be selected for either bus clock, exteranl clock, or its own asynchronous
clock.
Additional information, such as ADC channel assignments, alternate clock function, and
hardware trigger function, are configured as described following sections.
Customization:
• Primary clock: BUSCLK (20 MHz)
• Alternate clock: CLKIN , ADACK
• FIFO Enabled
• The following table summarizes the signal connection of ADC module.
Module
ADC0
ADC1
NXP Semiconductors
Table 17-1. ADC module signals
connection
ADO~AD30
HW_TRIG
Internal Clock
External Clock
MC9S08SU16 Reference Manual, Rev. 5, 4/2017
Signal Connect to
Analog signal ( details shouwn in
below section)
XBAR_OUT2, XBAR_OUT3
BUSCLK, ADACK
CLKIN
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