Texas Instruments MSP430F2112IPWR

Overview

MSP430F2112IPWR from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller featuring 2 KB flash, 256 B RAM, a 10-bit 200-ksps ADC with internal reference and DTC, two 16-bit timers (Timer0_A3 with three capture/compare registers, Timer1_A2 with two), USCI_A0 (UART/LIN/IrDA/SPI) and USCI_B0 (SPI/I²C), and up to 24 GPIO pins - deployed in battery-powered sensor nodes and portable instrumentation.

For engineers reviewing the MSP430F2112IPWR datasheet, MSP430F2112IPWR pinout, MSP430F2112IPWR application, or MSP430F2112IPWR equivalent, key selection criteria include its 250 µA active-mode current at 1 MHz/2.2 V, sub-1 µs wake-up from standby, integrated comparator for slope A/D, and TSSOP-28 package compatibility with space-constrained PCB layouts.

Technical Context

The MSP430F2112IPWR implements a 16-bit RISC CPU with seven addressing modes and register-to-register execution in one cycle, paired with five software-selectable low-power modes (LPM0–LPM4) and a digitally controlled oscillator (DCO) calibrated to ±1% across four frequencies up to 16 MHz. Its clock system delivers ACLK, SMCLK, and MCLK from internal LF/DCO or external crystal/resonator sources.

Peripherals are memory-mapped and accessible via all CPU instructions: ADC10 supports autoscan and DMA-like data transfer via DTC; USCI modules provide protocol-flexible serial communication; and Timer0_A3/Timer1_A2 support PWM, input capture, and interval timing with independent interrupt vectors per capture/compare register and overflow.

Key Specifications

Pinout & Package

Package: 28-pin TSSOP (PW), body size 9.7 mm × 4.4 mm, 0.65 mm pitch, thermal pad not present. Pinout validated per TI SLAS578J Rev J (2012) Table 2 and Device Pinout diagram.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F2112IPWR, the MSP430F2122IPWR offers immediate scalability within identical hardware, while the MSP430G2553IPW28 trades integrated analog features for higher flash capacity and broader community tool support - making it suitable for prototyping but less optimal for production sensor nodes requiring minimal BOM count and guaranteed low-power analog performance.

Availability

MSP430F2112IPWR is available at Aetrix Electronics and suitable for wireless sensor nodes, portable medical instruments, industrial data loggers, and smart meter interface modules requiring stable component supply and long-term lifecycle assurance.

Supply support for MSP430F2112IPWR 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 specializing in analog, embedded processing, and connectivity technologies with over 50 years of innovation in low-power design.

The MSP430F21x2 product line targets ultra-low-power portable measurement and sensing applications, emphasizing extended battery life through intelligent power gating, fast wake-up, and integrated analog subsystems.

FAQ

What is the maximum operating frequency of the MSP430F2112IPWR?

The MSP430F2112IPWR supports a maximum system clock (MCLK) of 16 MHz, achieved using the internal digitally controlled oscillator (DCO) with factory-calibrated settings stored in information memory segment A. This frequency is confirmed in the "Basic Clock Module Configurations" section of the SLAS578J datasheet and applies directly to the MSP430F2112IPWR variant. The DCO stabilizes in less than 1 µs, enabling rapid transitions from low-power modes to full-speed operation without external crystal dependency.

Does the MSP430F2112IPWR support hardware UART auto-baudrate detection for LIN compliance?

Yes, the MSP430F2112IPWR's USCI_A0 module explicitly supports enhanced UART with automatic baudrate detection (LIN), as stated in the "Universal Serial Communication Interface" feature list of the SLAS578J datasheet. This capability is implemented in hardware and requires no CPU overhead - the module detects sync field timing and adjusts baudrate accordingly, making MSP430F2112IPWR suitable for automotive body electronics and industrial LIN networks without external protocol assist ICs.

How many analog input channels does the ADC10 module support on the MSP430F2112IPWR?

The ADC10 module on the MSP430F2112IPWR supports eight analog input channels (A0–A7), mapped to P2.0, P2.1, P2.2, P2.3, P2.4, P3.0, P3.6, and P3.7 per Table 2 of SLAS578J. All channels are accessible in single-ended mode with internal reference; A3 and A4 also serve as VREF−/VREF+ inputs. The ADC10's autoscan function allows sequential conversion of any subset of these channels without software intervention, controlled entirely by hardware.

Is the MSP430F2112IPWR pin-compatible with other devices in the MSP430F21x2 family?

Yes, the MSP430F2112IPWR in the 28-pin TSSOP (PW) package shares identical pinout and electrical characteristics with MSP430F2122IPWR and MSP430F2132IPWR in the same package - confirmed in Table 1 ("Available Options") and the "Device Pinout, PW Package" diagram of SLAS578J. This allows drop-in replacement for firmware upgrades (e.g., moving from 2 KB to 4 KB flash) without PCB revision, provided the target device's memory and peripheral requirements are met.

What debug interface does the MSP430F2112IPWR use, and what hardware is required?

The MSP430F2112IPWR uses the Spy-Bi-Wire (SBW) interface via the RST/NMI/SBWTDIO and TEST/SBWTCK pins (pins 7 and 1 on TSSOP-28), requiring only two connections for full programming and debugging. Compatible tools include the MSP-FET430UIF (USB) and MSP-FET430PIF (parallel port); no external level shifters or JTAG header are needed. This SBW implementation is documented in the "Development Tool Support" section and functional block diagram of SLAS578J.