XM33C321ASPZR datasheet(79/122 Pages) TI2

79 / 122 page

– Internal reference voltage (1.4V, 2.5V)

– Integrated 8-bit reference DAC, the output of which is also available to connect to an external op-amp.

• Configurable operation modes:

– High speed mode

– Lower power mode

• Programmable output glitch filter delay

• Supports 6 blanking sources (refer to the CTL2 register of the COMP chapter)

• Supports device wake up from up to 4 VMON channels in STOP mode

• Output connected to advanced timer fault handling mechanism

• The IPSEL and IMSEL bits in comparator registers can be used to select the comparator channel inputs from

device pins or from internal analog modules.

Table 8-9. COMP Blanking Source Table

CTL2.BLANKSRC VALUE

BLANKING SOURCE

TIMA0_0.CC2

TIMA0_0.CC3

TIMA0_1.CC2

TIMA0_1.CC3

TIMG4_0.CC1

TIMG4_1.CC1

Table 8-10. COMP0 Input Channel Selection

IPSEL / IMSEL BITS

POSITIVE TERMINAL INPUT

NEGATIVE TERMINAL INPUT

0x0

COMP0_IN0+

COMP0_IN0-

0x1

COMP0_IN1+

COMP0_IN1-

0x2

COMP0_IN2+

COMP0_IN2-

0x3

COMP0_IN3+

COMP0_IN3-

Table 8-11. COMP1 Input Channel Selection

IPSEL / IMSEL BITS

POSITIVE TERMINAL INPUT

NEGATIVE TERMINAL INPUT

0x0

COMP1_IN0+

COMP1_IN0-

0x1

COMP1_IN1+

COMP1_IN1-

0x2

COMP1_IN2+

COMP1_IN2-

0x3

COMP1_IN3+

COMP1_IN3-

For more information about device analog connections, see Device Analog Connections.

For more details, see the COMP chapter of the MSPM33C3x 160-MHz Microcontrollers Technical Reference

Manual.

8.12.3 Temperature Sensor

The temperature sensor provides a voltage output that changes linearly (-2 mV/°C) with device temperature.

The temperature sensor output is internally connected to one of ADC input channels to enable a temperature-to-

digital conversion.

See the temperature sensor section of the MSPM33C3x 160-MHz Microcontrollers Technical Reference Manual

for guidance on calculating the device temperature with the factory trim value.

8.12.4 VREF

The shared voltage reference module (VREF) in these devices contain a configurable voltage reference buffer

which allows users to supply a stable reference to on-board analog peripherals. It also supports bringing in an

external reference for applications where higher accuracy is required.

VREF features include:

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MSPM33C321A, MSPM33C3219

SLASFB6A – DECEMBER 2025 – REVISED SEPTEMBER 2026

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