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ADC12 Introduction
17.1 ADC12 Introduction
The ADC12 module supports fast, 12-bit analog-to-digital conversions. The
module implements a 12-bit SAR core, sample select control, reference
generator
conversion-and-control buffer allows up to 16 independent ADC samples to be
converted and stored without any CPU intervention.
ADC12 features include:
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The block diagram of ADC12 is shown in Figure 17−1.
17-2
ADC12
and
a
16
word
Greater than 200 ksps maximum conversion rate
Monotonic 12-bit converter with no missing codes
Sample-and-hold with programmable sampling periods controlled by
software or timers.
Conversion initiation by software, Timer_A, or Timer_B
Software selectable on-chip reference voltage generation (1.5 V or 2.5 V)
Software selectable internal or external reference
Eight individually configurable external input channels
Conversion channels for internal temperature sensor, AV
references
Independent channel-selectable reference sources for both positive and
negative references
Selectable conversion clock source
Single-channel, repeat-single-channel, sequence, and repeat-sequence
conversion modes
ADC core and reference voltage can be powered down separately
Interrupt vector register for fast decoding of 18 ADC interrupts
16 conversion-result storage registers
conversion-and-control
buffer.
, and external
CC
The
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