JAJSFF4D May 2018 – December 2019 MSP430FR2153 , MSP430FR2155 , MSP430FR2353 , MSP430FR2355
PRODUCTION DATA.
The MSP430FR235x devices integrate four SAC modules: SAC0, SAC1, SAC2, and SAC3. The SAC integrates a high-performance low-power operational amplifier. SAC-L3 supports a hybrid configuration of general-purpose amplifier, 12-bit voltage reference DAC, and a multiplex switch array. For more information, see the SAC chapter in the MSP430FR4xx and MSP430FR2xx Family User's Guide. Only MSP430FR235x devices implement the SAC modules. MSP430FR215x devices do not support SAC modules.
The SAC0 and SAC2 are interconnected and support external inputs and internal inputs (see Table 5-27 and Table 5-28).
PSEL | SAC0 OA NONINVERTING CHANNELS | NSEL | SAC0 OA INVERTING CHANNELS |
---|---|---|---|
00 | P1.3/OA0+/A3 | 00 | P1.2/OA0-/A2 |
01 | SAC0 12-bit DAC | 01 | PGA feedback |
10 | P3.1/OA2O, SAC2 OA output | 10 | P3.1/OA2O, SAC2 OA output |
11 | N/A | 11 | N/A |
PSEL | SAC2 OA NONINVERTING CHANNELS | NSEL | SAC2 OA INVERTING CHANNELS |
---|---|---|---|
00 | P3.3/OA2+ | 00 | P3.2/OA2- |
01 | SAC2 12-bit DAC | 01 | PGA feedback |
10 | P1.1/UCB0CLK/ACLK/OA0O/COMP0.1/A1, SAC0 OA output | 10 | P1.1/UCB0CLK/ACLK/OA0O/COMP0.1/A1, SAC0 OA output |
11 | N/A | 11 | N/A |
The SAC1 and SAC3 are interconnected and support external inputs and internal inputs (see Table 5-29 and Table 5-30).
PSEL | SAC1 OA NONINVERTING CHANNELS | NSEL | SAC1 OA INVERTING CHANNELS |
---|---|---|---|
00 | P1.7/OA1+/A7 | 00 | P1.6/OA1-/A6 |
01 | SAC1 12-bit DAC | 01 | PGA feedback |
10 | P3.5/OA3O, SAC3 OA output | 10 | P3.5/OA3O, SAC3 OA output |
11 | N/A | 11 | N/A |
PSEL | SAC3 OA NONINVERTING CHANNELS | NSEL | SAC3 OA INVERTING CHANNELS |
---|---|---|---|
00 | P3.7/OA3+ | 00 | P3.6/OA3- |
01 | SAC3 12-bit DAC | 01 | PGA feedback |
10 | P1.5/OA1O/A5, SAC1 OA output | 10 | P1.5/OA1O/A5, SAC1 OA output |
11 | N/A | 11 | N/A |
Each SAC DAC supports two selectable voltage references (see Table 5-31).
DACSREF | SACx DAC REFERENCE SELECTION |
0 | DVCC |
1 | Internal shared reference (1.5, 2.0, or 2.5 V ) |
DACSREF | SAC1 DAC REFERENCE |
0 | DVCC |
1 | Internal shared reference (1.5, 2.0, or 2.5 V ) |
DACSREF | SAC2 DAC REFERENCE |
0 | DVCC |
1 | Internal shared reference (1.5, 2.0, or 2.5 V ) |
DACSREF | SAC3 DAC REFERENCE |
0 | DVCC |
1 | Internal shared reference (1.5, 2.0, or 2.5 V ) |
Each SAC DAC supports one software trigger and two hardware trigger from chip signals.
DACLSEL | SAC0 DAC HARDWARE TRIGGER | DACLSEL | SAC1 DAC HARDWARE TRIGGER |
00 | Writing SAC0DACDAT register | 00 | Writing SAC1DACDAT register |
01 | N/A | 01 | N/A |
10 | TB2.1 | 10 | TB2.1 |
11 | TB2.2 | 11 | TB2.2 |
DACLSEL | SAC2 DAC HARDWARE TRIGGER | DACLSEL | SAC3 DAC HARDWARE TRIGGER |
00 | Writing SAC2DACDAT register | 00 | Writing SAC3DACDAT register |
01 | N/A | 01 | N/A |
10 | TB2.1 | 10 | TB2.1 |
11 | TB2.2 | 11 | TB2.2 |