Texas Instruments MSP430G2312IPW14

Overview

MSP430G2312IPW14 from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal microcontroller in 14-pin TSSOP packaging, featuring 4 KB flash, 256 B RAM, one 16-bit Timer_A with three capture/compare registers, Universal Serial Interface (USI) for SPI/I²C, on-chip comparator, and eight programmable I/O pins. It operates from 1.8 V to 3.6 V and supports battery-powered sensor nodes requiring sub-µA standby current.

For engineers reviewing the MSP430G2312IPW14 datasheet, MSP430G2312IPW14 pinout, MSP430G2312IPW14 application, or MSP430G2312IPW14 equivalent, key selection criteria include its 4 KB flash capacity, absence of integrated ADC10 (distinguishing it from G2x52 variants), USI-based serial communication capability, and 14-pin TSSOP footprint optimized for space-constrained embedded sensing designs.

Technical Context

The MSP430G2312IPW14 implements a 16-bit RISC CPU with seven addressing modes and 51 instructions, executing register-to-register operations in one CPU clock cycle. Its basic clock module integrates a digitally controlled oscillator (DCO) calibrated at 1/8/12/16 MHz, plus low-frequency internal oscillator and external crystal support (32 kHz).

It features five software-selectable low-power modes - including LPM4 with 0.1 µA off-mode current - and Spy-Bi-Wire debug interface. The USI module supports both SPI and I²C protocols using shared pins P1.6/P1.7, while the comparator supports rail-to-rail analog monitoring without ADC conversion.

Key Specifications

Pinout & Package

14-pin TSSOP (PW) package with exposed pad option not applicable; pin pitch 0.65 mm; JEDEC MO-153 compliant; thermal resistance θ_JA = 120°C/W (typical).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultra-low-power microcontroller applications.

Compared with MSP430G2212IPW14, the MSP430G2312IPW14 offers triple flash capacity and full Timer_A capture functionality; versus MSP430G2332IPW14, it trades ADC10 integration for lower active-mode current and reduced silicon cost in comparator-only applications.

Availability

MSP430G2312IPW14 is available at Aetrix Electronics and suitable for smart sensor nodes, industrial HMI panels, portable medical monitors, and energy-harvesting IoT endpoints requiring stable component supply across long production lifecycles.

Supply support for MSP430G2312IPW14 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and consumer markets.

The MSP430G2xx family targets ultra-low-power embedded applications where extended battery life, small footprint, and integrated analog peripherals are critical - especially in sensor, metering, and portable instrumentation designs.

FAQ

Does the MSP430G2312IPW14 include an integrated ADC?

No, the MSP430G2312IPW14 does not include an ADC10 module. It belongs to the G2x12 series, which omits the 10-bit analog-to-digital converter present in G2x52 variants. Analog monitoring is supported exclusively through the on-chip Comparator_A+ module with eight input channels and rail-to-rail operation. Designers requiring digitized analog signals must add an external ADC or select an MSP430G2x52 variant such as MSP430G2352IPW14.

What debug interface does the MSP430G2312IPW14 support?

The MSP430G2312IPW14 supports the two-wire Spy-Bi-Wire (SBW) interface via pins RST/NMI/SBWTDIO (Pin 10) and TEST/SBWTCK (Pin 11). This enables full in-system programming, real-time debugging, and flash memory access without requiring a four-wire JTAG header. The SBW interface is fully compatible with TI's MSP-FET and LaunchPad development tools, and requires only one GPIO pin for bidirectional data transfer.

Can the MSP430G2312IPW14 drive an external 32.768 kHz crystal?

Yes, the MSP430G2312IPW14 can drive an external 32.768 kHz watch crystal using pins XIN/P2.6 (Pin 13) and XOUT/P2.7 (Pin 12). The basic clock module includes built-in load capacitance and oscillator circuitry optimized for standard tuning-fork crystals. External load capacitors (typically 12.5 pF) are recommended for stable oscillation, and the crystal must be placed close to the device with minimal trace length to ensure reliable startup and low jitter.

How many I/O pins does the MSP430G2312IPW14 provide?

The MSP430G2312IPW14 provides eight fully configurable digital I/O pins: P1.0 through P1.7 (Pins 2–9), plus P2.6 and P2.7 (Pins 13–12), though P2.6 and P2.7 are multiplexed with XIN/XOUT oscillator functions. All eight P1 pins support individually programmable pullup/pulldown resistors, edge-selectable interrupts, and capacitive-touch enable bits. Port P2 has only two accessible pins in the 14-pin TSSOP package, limiting expansion I/O to those two lines unless remapped via alternate functions.

Is the MSP430G2312IPW14 pin-compatible with other devices in the G2xx family?

Yes, the MSP430G2312IPW14 is pin-compatible with all other 14-pin TSSOP (PW) variants in the MSP430G2xx family, including MSP430G2212IPW14, MSP430G2332IPW14, and MSP430G2412IPW14. Identical pin numbering, electrical characteristics, and peripheral mappings allow direct substitution within the same package footprint - provided firmware accounts for differences in flash size, RAM, and peripheral presence (e.g., ADC10 or additional Timer_A capture inputs).