My Inquiry
My Account
Texas Instruments MSP430F122IPWR
- Part No.:
- MSP430F122IPWR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 28-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MSP430F122IPWR.pdf
- Description:
- IC MCU 16BIT 4KB FLASH 28TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,907
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MSP430F122IPWR from Texas Instruments is an ultralow-power 16-bit RISC mixed-signal microcontroller featuring 4KB Flash + 256B RAM, 22 I/O pins, and integrated Timer_A with three capture/compare registers. It operates from 1.8 V to 3.6 V, achieves 200 μA active current at 1 MHz/2.2 V, and supports UART/SPI via USART0 - ideal for battery-powered sensor nodes and portable measurement systems.
For engineers reviewing the MSP430F122IPWR datasheet, MSP430F122IPWR pinout, MSP430F122IPWR application, or MSP430F122IPWR equivalent, key selection criteria include its 28-pin TSSOP (PW) package, LPM4 standby current of 0.1 μA, on-chip analog comparator for slope A/D, and JTAG/debug support via TEST/P1.x pins.
Technical Context
The MSP430F122IPWR implements a 16-bit CPU with constant generators and seven addressing modes, enabling single-cycle register operations. Its basic clock module integrates a digitally controlled oscillator (DCO), 32 kHz crystal support, and selectable ACLK/SMCLK/MCLK domains - enabling wake-up from LPM4 in <6 μs.
Peripheral integration includes a 16-bit Timer_A3 with three independent capture/compare registers, a dual-input analog comparator (CA0/CA1) supporting battery monitoring and slope ADC, and USART0 configurable as UART or SPI with double-buffered TX/RX channels.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 general-purpose registers and constant generators for optimized code density |
| Memory | 4KB Flash program memory + 256B RAM - sufficient for compact firmware with data logging and sensor processing |
| Supply Voltage | 1.8 V to 3.6 V - compatible with single-cell Li-ion, LiFePO₄, or two-cell alkaline batteries |
| Active Current | 200 μA at 1 MHz / 2.2 V - enables multi-year operation on coin-cell batteries in duty-cycled sensing |
| Low-Power Modes | Five software-selectable modes including LPM4 (0.1 μA RAM retention) - maximizes sleep time between sensor reads |
| Timer Resources | Timer_A3 with three capture/compare registers - supports PWM generation, input capture, and interval timing without external components |
| Communication | USART0 configurable as UART (UTXD0/URXD0) or SPI (SIMO0/SOMI0/UCLK0/STE0) - simplifies interface to sensors, radios, or host MCUs |
Pinout & Package
Package: 28-pin Plastic Thin Shrink Small-Outline Package (TSSOP), body width 4.4 mm, lead pitch 0.65 mm - suitable for high-density PCB layouts with automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/TACLK | Timer_A clock input | Accepts external clock source for Timer_A; also functions as general-purpose I/O with interrupt capability |
| P1.1/TA0 | Timer_A capture/compare channel 0 | Supports CCI0A input (capture) or Out0 output (compare); used for BSL transmit in bootloader mode |
| P2.2/CAOUT/TA0 | Comparator_A output / Timer_A channel 0 | Delivers comparator result or TA0 output; serves as BSL receive pin for serial programming |
| P3.4/UTXD0 & P3.5/URXD0 | UART transmit/receive | Dedicated full-duplex UART interface - enables firmware updates and sensor data streaming without bit-banging |
| RST/NMI | Reset or non-maskable interrupt | Hardware reset input; also accepts NMI events - critical for system recovery and watchdog timeout handling |
| TEST | JTAG test mode select | Enables JTAG debugging and flash programming via standard tools - eliminates need for external programmers |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow-power operation | LPM4 draws only 0.1 μA with RAM retention - extends battery life in always-on sensor endpoints |
| Integrated analog comparator | Two analog inputs (CA0/CA1) and output (CAOUT) enable resistor-based sensor A/D conversion without external ADC |
| On-chip serial bootloader (BSL) | UART-based flash programming via P1.1 (TX) and P2.2 (RX) - eliminates dedicated programming hardware |
| Digital-controlled oscillator (DCO) | Stabilizes in <6 μs from LPM4 - enables rapid response to sensor-triggered interrupts |
| Programmable code protection | Security fuse prevents unauthorized read-out of Flash contents - protects firmware IP in deployed devices |
Applications
| Wireless Sensor Node | Battery-Powered Data Logger |
|---|---|
Use Scenario: Temperature/humidity sensor sampling every 30 seconds, transmitting via sub-GHz RF transceiver. IC Role / Device Role / Timing Role: Main controller executing sensor read, data preprocessing, UART communication with RF IC, and aggressive power cycling. Use Value: 0.1 μA LPM4 current and 6 μs wake-up ensure >5-year operation on CR2032; integrated comparator reduces BOM count. | Use Scenario: Industrial vibration monitor recording acceleration peaks to internal Flash during equipment runtime. IC Role / Device Role / Timing Role: Real-time acquisition controller using Timer_A capture to timestamp events and USART0 to dump logs via USB-UART bridge. Use Value: 4KB Flash stores 200+ timestamped events; 256B RAM buffers burst data before Flash write; 1.8 V min supply supports wide battery discharge range. |
| Portable Medical Monitor | Smart Utility Meter Interface |
Use Scenario: Wearable pulse oximeter acquiring analog photodiode signals and calculating SpO₂ in real time. IC Role / Device Role / Timing Role: Analog front-end controller using comparator_A for slope ADC and Timer_A for precise LED timing control. Use Value: On-chip comparator eliminates external op-amp/ADC; low active current preserves battery between measurements. | Use Scenario: AMR (Automatic Meter Reading) module interfacing with mechanical meter pulses and sending data via PLC or NB-IoT modem. IC Role / Device Role / Timing Role: Pulse counter and protocol translator - captures meter ticks via P1.x interrupts and formats packets for modem UART. Use Value: 22 GPIOs support multiple meter interfaces; UART/SPI flexibility allows direct connection to diverse modems without level shifters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F2274IPW | 16KB Flash, 1KB RAM, enhanced USCI (UART/SPI/I²C), 10-bit ADC, 25 MHz max MCLK | Requires higher supply current (270 μA active @ 1 MHz), lacks slope ADC comparator; better for ADC-heavy designs | Select when needing higher memory, I²C, or faster throughput - not drop-in; requires PCB and firmware changes |
| MSP430G2553IPW | 16KB Flash, 512B RAM, built-in 10-bit ADC, USCI_A0 (UART/SPI), no comparator_A module | Higher active current (220 μA @ 1 MHz), no native slope ADC - relies on ADC for analog sensing | Choose for cost-sensitive, ADC-centric applications where comparator-based A/D is unnecessary |
Compared with MSP430F122IPWR, the MSP430F2274IPW offers greater memory and peripheral breadth but sacrifices ultralow standby current and slope ADC capability; the MSP430G2553IPW provides modern toolchain support and integrated ADC but removes the analog comparator essential for resistor-based sensor interfaces.
Availability
MSP430F122IPWR is available at Aetrix Electronics and suitable for wireless sensor nodes, battery-powered data loggers, portable medical monitors, and smart utility meter interfaces requiring stable component supply across long-lifecycle industrial programs.
Supply support for MSP430F122IPWR 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 decades of leadership in ultra-low-power microcontrollers.
The MSP430F122IPWR belongs to the MSP430x12x family, designed specifically for extended-battery-life portable measurement systems requiring integrated analog peripherals, minimal active/standby current, and robust mixed-signal integration.
FAQ
What is the maximum operating frequency of the MSP430F122IPWR at 3.6 V?
The MSP430F122IPWR supports a maximum system clock (MCLK) frequency of 8 MHz at 3.6 V, as specified in the recommended operating conditions. This applies when using the internal DCO or external crystal/resonator sources. The device maintains full functionality-including Flash programming, Timer_A operation, and USART0 communication-at this speed, provided VCC remains within 1.8 V–3.6 V and temperature stays within −40°C to +85°C.
Does the MSP430F122IPWR support in-system programming without external voltage?
Yes, the MSP430F122IPWR supports in-system programming without external programming voltage. It uses on-chip charge pumps for Flash programming, enabled via JTAG or the UART-based bootstrap loader (BSL). The BSL operates using only VCC (1.8 V–3.6 V), with programming signals routed through P1.1 (TX) and P2.2 (RX), eliminating the need for VPP or specialized programmers.
How many I/O pins does the MSP430F122IPWR provide in its TSSOP package?
The MSP430F122IPWR in the 28-pin TSSOP (PW) package provides 22 usable digital I/O pins: eight on Port 1 (P1.0–P1.7), six on Port 2 (P2.0–P2.5), and eight on Port 3 (P3.0–P3.7). All pins are individually configurable as input/output with optional pullup/down resistors, and P1/P2 pins support edge-selectable interrupts - critical for low-power event-driven sensing.
Can the MSP430F122IPWR perform analog-to-digital conversion without an external ADC?
Yes, the MSP430F122IPWR can perform analog-to-digital conversion using its integrated Comparator_A module in slope ADC mode. By charging a capacitor through a resistive sensor and measuring time-to-compare against a reference, it achieves effective 10–12 bit resolution without external components. This method is explicitly documented in the datasheet and leverages P2.2 (CAOUT), P2.3 (CA0), and P2.4 (CA1) - making it ideal for thermistors, photoresistors, and other ratiometric sensors.
What debug interface does the MSP430F122IPWR support?
The MSP430F122IPWR supports JTAG-based debugging and programming via the TEST pin (Pin 1) and Port 1 pins (P1.4/TCK, P1.5/TMS, P1.6/TDI, P1.7/TDO). This four-wire interface enables full-speed emulation, breakpoint setting, register inspection, and Flash programming using standard TI tools like MSP-FET or third-party JTAG adapters - all without requiring additional hardware beyond the TSSOP footprint.
MSP430F122IPWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 28-TSSOP (0.173", 4.40mm Width)
- Series:
- MSP430x1xx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPU16
- Core Size:
- 16-Bit
- Speed:
- 8MHz
- Connectivity:
- SPI, UART/USART
- Peripherals:
- POR, PWM, WDT
- Number of I/O:
- 22
- Program Memory Size:
- 4KB (4K x 8 + 256B)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 256 x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- Slope A/D
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430F122IPWR FAQ
1.How can I place an order for MSP430F122IPWR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F122IPWR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MSP430F122IPWR reliable?
The price and inventory of MSP430F122IPWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F122IPWR is usually 5 days.
3.What payment methods are accepted for MSP430F122IPWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F122IPWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F122IPWR?
MSP430F122IPWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F122IPWR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MSP430F122IPWR?
For technical support, including MSP430F122IPWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F122IPWR requirements.
6.How does Aetrix verify that MSP430F122IPWR is sourced from the original manufacturer or authorized distributors?
All MSP430F122IPWR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MSP430F122IPWR meets industry standards.
7.What is the process for return or replacement of MSP430F122IPWR?
All MSP430F122IPWR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F122IPWR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MSP430F122IPWR part is unused and in its original packaging.
Return procedure for MSP430F122IPWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MSP430F122IPWR Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
