SLAS865F October 2014 – December 2021 MSP430FR4131 , MSP430FR4132 , MSP430FR4133
PRODUCTION DATA
The 10-bit ADC module supports fast 10-bit analog-to-digital conversions with single-ended input. The module implements a 10-bit SAR core, sample select control, reference generator and a conversion result buffer. A window comparator with a lower and upper limit allows CPU independent result monitoring with three window comparator interrupt flags.
The ADC supports 10 external inputs and four internal inputs (see Table 9-12).
| ADCINCHx | ADC CHANNELS | EXTERNAL PIN OUT |
|---|---|---|
| 0 | A0/Veref– | P1.0 |
| 1 | A1/Veref+ | P1.1 |
| 2 | A2 | P1.2 |
| 3 | A3 | P1.3 |
| 4 | A4(2) | P1.4 |
| 5 | A5 | P1.5 |
| 6 | A6 | P1.6 |
| 7 | A7 | P1.7 |
| 8 | A8 | P8.0(1) |
| 9 | A9 | P8.1(1) |
| 10 | Not Used | N/A |
| 11 | Not Used | N/A |
| 12 | On-chip Temperature Sensor | N/A |
| 13 | Reference Voltage (1.5 V) | N/A |
| 14 | DVSS | N/A |
| 15 | DVCC | N/A |
The AD conversion can be started by software or a hardware trigger. Table 9-13 shows the trigger sources that are available.
| ADCSHSx | TRIGGER SOURCE | |
|---|---|---|
| Binary | Decimal | |
| 00 | 0 | ADCSC bit (software trigger) |
| 01 | 1 | RTC event |
| 10 | 2 | TA1.1B |
| 11 | 3 | TA1.2B |