Both 12-bit analog-to-digital converter (ADC)
modules in these devices, ADC0 and ADC1, support fast 12-bit conversions with
single-ended inputs and simultaneous sampling operation.
ADC features include:
- 12-bit output resolution at 4Msps with greater
than 11 ENOB
- HW averaging enables 14-bit effective resolution
at 250ksps
- Up to 27 total external input channels with individual result storage registers
- Internal channels for temperature sensing and supply monitoring
- Software selectable reference:
- Configurable internal reference voltage of 1.4V and 2.5V (requires decoupling capacitor on VREF+/- pins)
- MCU supply voltage (VDD)
- External reference supplied to the ADC through the VREF+/- pins
- Operates in RUN, SLEEP, and STOP modes
Table 8-7 shows the ADC channel mapping in the device.
Table 8-7 ADC Channel MappingCHANNEL[0:7] | SIGNAL NAME(2) | CHANNEL[8:15] | SIGNAL NAME(1)(2) |
---|
ADC0 | ADC1 | ADC0 | ADC1 |
---|
0 | A0_0 | A1_0 / DAC_OUT3 | 8 | A0_8 | A1_8 |
1 | A0_1 | A1_1 | 9 | A0_9 | - |
2 | A0_2 | A1_2 | 10 | - | A1_10 |
3 | A0_3 | A1_3 | 11 | Temperature Sensor | A1_11 |
4 | A0_4 | A1_4 | 12 | A0_12 | A1_12 / VREF+ |
5 | A0_5 | A1_5 | 13 | A0_13 | A1_13 |
6 | A0_6 | A1_6 | 14 | A0_14 | A1_14 |
7 | A0_7 | A1_7 / VREF- | 15 | Supply/Battery Monitor | Supply/Battery Monitor |
(1) Italicized signal names are purely internal to the device. These signals are used for internal peripheral interconnections.
(2) For more information about device analog connections please refer to
Section 8.33 (3) When DAC_OUT is used, A1_0 cannot be used to sample external signals. Avoid using external circuitry on the PA15 pin when using DAC_OUT.
For more details, see the ADC chapter of the MSPM0 G-Series 80MHz Microcontrollers Technical Reference Manual.