MSP430F149IPMR - 8MHz 16-bit MCU, 60KB Flash, 64-LQFP | TI (Tape & Reel)
MPN: MSP430F149IPMR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $11.5 | $11.50 |
| 10 | $10.35 | $103.50 |
| 100 | $9.2 | $920.00 |
| 500 | $8.3 | $4,150.00 |
| 1,000 | $7.5 | $7,500.00 |
MSP430F149IPMR Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and programmable peripherals on one silicon die. The MSP430 platform in particular is an ultra-low-power mixed-signal architecture: it merges a 16-bit RISC CPU with high-resolution analog peripherals, placing it in the taxonomy of mixed-signal microcontroller -> microcontroller -> embedded processor -> semiconductor IC. Its five power-saving modes and sub-microamp wake-up time are the defining characteristics that differentiate it from general-purpose MCUs in portable measurement roles.
Key features include a 1.8 V to 3.6 V supply range, 280 µA active current at 1 MHz / 2.2 V, 1.6 µA standby current, 0.1 µA RAM-retention off-mode current, and wake-up from standby in less than 6 µs. The 12-bit SAR ADC offers 8 input channels with up to 200 ksps conversion rate, while the dual 12-bit DACs support 12-bit monotonic output for calibration or setpoint generation. Sixteen timers (including two 16-bit timers with capture/compare and a watchdog), an embedded 32 kHz real-time clock oscillator, and on-chip JTAG/Spy-Bi-Wire debug round out the peripheral set.
Typical applications include portable medical instrumentation, smart utility meters, battery-powered sensor nodes, industrial data loggers, and consumer remote controls. Its small code footprint and ultra-low standby consumption make it well suited for designs that spend most of their time in sleep and wake briefly for sampling or communications.
When designing with this part, place decoupling capacitors within a few millimeters of the AVCC/DVCC pins, keep the analog reference trace short, and route the 32 kHz crystal traces symmetrically with a guard ground. The wide Vcc range allows direct connection to a single lithium cell or two alkaline cells, but a regulator is still recommended for ADC precision. This page synthesizes distributor pricing, drop-in alternatives, and practical design guidance that goes beyond the manufacturer datasheet.
Drop-in alternatives for MSP430F149IPMR — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with MSP430F149IPMR (same form factor and footprint) — differing in ADC, Communication Interfaces, Hardware Multiplier, Operating Temperature, Package.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MSP430F1491IPMG4
✅ Drop-In✓ In Stock
$5.73 / Unit
View Datasheet →MSP430F1491IPMRG4
✅ Drop-In📋 Reference alternative (not in catalog)
MSP430F1471IPMRG4
✅ Drop-In📋 Reference alternative (not in catalog)
MSP430F147IPMRG4
✅ Drop-In📋 Reference alternative (not in catalog)
MSP430F149IPMR Maximum Ratings & Electrical Characteristics
| Core | MSP430 CPU16 (16-bit RISC) |
| Series | MSP430x1xx |
| Maximum Clock Frequency | 8 MHz |
| Program Memory | 60 KB Flash (60K x 8 + 256B info) |
| RAM | 2 KB |
| Supply Voltage Range | 1.8 V to 3.6 V |
| Active Mode Current (1 MHz, 2.2 V) | 280 µA |
| Standby Mode Current | 1.6 µA |
| Off Mode Current (RAM Retention) | 0.1 µA |
| Wake-up From Standby | <6 µs |
| ADC | 12-bit SAR, 8 channels, up to 200 ksps |
| DAC | 2x 12-bit DAC |
| Comparators | 2 on-chip |
| Communication Interfaces | 2x USART (UART/SPI), 1x I2C/SPI, 1x UART |
| Timers | 16-bit Timer A and Timer B, WDT+, basic timer1 |
| Hardware Multiplier | Yes (16x16, signed/unsigned) |
| Operating Temperature | -40C to +85C (IPM suffix) |
| Package | 64-LQFP (PM), 10x10 mm |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
MSP430F149IPMR Pin Configuration
| Pin 1 | DVCC1 — Digital supply voltage |
| Pin 2 | P5.0/STE0 — Port 5.0 / SPI slave transmit enable, USART0 |
| Pin 3 | AVCC1 — Analog supply voltage |
| Pin 4 | AVSS1 — Analog ground |
| Pin 5 | Vref+ — ADC reference voltage positive input |
| Pin 6 | Vref-/VeREF- — ADC reference negative / external reference |
| Pin 7 | XIN — Crystal oscillator input |
| Pin 8 | XOUT — Crystal oscillator output |
| Pin 9 | P2.0/ACLK — Port 2.0 / ACLK output |
| Pin 10 | P2.1/INCLK — Port 2.1 / INCLK external clock input |
| Pin 11 | P2.2/CAOUT — Port 2.2 / comparator A output |
| Pin 12 | P2.3/CA0 — Port 2.3 / comparator A input 0 |
| Pin 13 | P2.4/CA1 — Port 2.4 / comparator A input 1 |
| Pin 14 | P2.5/R_{OUT} — Port 2.5 / DAC0 reference resistor |
| Pin 15 | P2.6/DAC0 — Port 2.6 / DAC0 output |
| Pin 16 | P2.7/DAC1 — Port 2.7 / DAC1 output |
| Pin 17 | P3.0/SIMO0 — Port 3.0 / USART0 SPI master out / slave in |
| Pin 18 | P3.1/SOMI0 — Port 3.1 / USART0 SPI master in / slave out |
| Pin 19 | P3.2/UCLK0 — Port 3.2 / USART0 clock |
| Pin 20 | P3.3/STE0 — Port 3.3 / USART0 slave transmit enable |
| Pin 21 | P3.4/SIMO1/SDA — Port 3.4 / USART1 SPI / I2C SDA |
| Pin 22 | P3.5/SOMI1/SCL — Port 3.5 / USART1 SPI / I2C SCL |
| Pin 23 | P3.6/UCLK1 — Port 3.6 / USART1 clock |
| Pin 24 | P3.7/STE1 — Port 3.7 / USART1 slave transmit enable |
| Pin 25 | P4.0/TBCLK — Port 4.0 / Timer_B clock input |
| Pin 26 | P4.1/TBOUTH/SVSOUT — Port 4.1 / Timer_B output high / SVS output |
| Pin 27 | P4.2/TBOUT0 — Port 4.2 / Timer_B output 0 |
| Pin 28 | P4.3/TBOUT1 — Port 4.3 / Timer_B output 1 |
| Pin 29 | P4.4/TBOUT2 — Port 4.4 / Timer_B output 2 |
| Pin 30 | P4.5/TBOUT3 — Port 4.5 / Timer_B output 3 |
| Pin 31 | P4.6/TBOUT4 — Port 4.6 / Timer_B output 4 |
| Pin 32 | P4.7/TBOUT5 — Port 4.7 / Timer_B output 5 |
| Pin 33 | P1.0/TACLK — Port 1.0 / Timer_A clock input |
| Pin 34 | P1.1/TA0 — Port 1.1 / Timer_A capture/compare 0 |
| Pin 35 | P1.2/TA1 — Port 1.2 / Timer_A capture/compare 1 |
| Pin 36 | P1.3/TA2 — Port 1.3 / Timer_A capture/compare 2 |
| Pin 37 | P1.4/SMCLK — Port 1.4 / SMCLK output |
| Pin 38 | P1.5/TA0 — Port 1.5 / Timer_A capture/compare |
| Pin 39 | P1.6/TA1 — Port 1.6 / Timer_A capture/compare |
| Pin 40 | P1.7/TA2 — Port 1.7 / Timer_A capture/compare |
| Pin 41 | P5.1/MCLK — Port 5.1 / MCLK output |
| Pin 42 | P5.2/SMCLK — Port 5.2 / SMCLK output |
| Pin 43 | P5.3/ACLK — Port 5.3 / ACLK output |
| Pin 44 | P5.4/HCLK — Port 5.4 / HCLK test output |
| Pin 45 | P5.5 — Port 5.5 |
| Pin 46 | P5.6 — Port 5.6 |
| Pin 47 | P5.7 — Port 5.7 |
| Pin 48 | P6.0/A0 — Port 6.0 / ADC input 0 |
| Pin 49 | P6.1/A1 — Port 6.1 / ADC input 1 |
| Pin 50 | P6.2/A2 — Port 6.2 / ADC input 2 |
| Pin 51 | P6.3/A3 — Port 6.3 / ADC input 3 |
| Pin 52 | P6.4/A4 — Port 6.4 / ADC input 4 |
| Pin 53 | P6.5/A5 — Port 6.5 / ADC input 5 |
| Pin 54 | P6.6/A6/DAC0 — Port 6.6 / ADC input 6 / DAC0 output |
| Pin 55 | P6.7/A7/DAC1/SVSIN — Port 6.7 / ADC input 7 / DAC1 output / SVS input |
| Pin 56 | RST/NMI — Reset input / non-maskable interrupt |
| Pin 57 | TDO/SBWTDIO — JTAG test data out / Spy-Bi-Wire data I/O |
| Pin 58 | TDI/SBWTCK — JTAG test data in / Spy-Bi-Wire test clock |
| Pin 59 | TMS — JTAG test mode select |
| Pin 60 | TCK — JTAG test clock |
| Pin 61 | SBSTEST — Spy-Bi-Wire enable (tie high for SBW) |
| Pin 62 | DVSS1 — Digital ground |
| Pin 63 | DVSS2 — Digital ground |
| Pin 64 | DVCC2 — Digital supply voltage |
Typical Applications
MSP430F149IPMR is suitable for 6 applications: Portable Medical Instrumentation, Smart Utility Metering (Electricity, Water, Gas), Industrial Data Loggers and Sensor Nodes, Battery-Powered Remote Controls / Key Fobs, Consumer Electronics with Display/Motor Control, Security and Alarm Systems.
Portable Medical Instrumentation
The MSP430F149IPMR is a strong fit for portable medical instruments such as blood-glucose meters, pulse oximeters, and digital thermometers. Its 1.6 µA standby and 0.1 µA off-mode (RAM retained) draw extend battery life to months or years on a single coin cell, while the 12-bit SAR ADC with 8 channels and 200 ksps rate captures bio-sensor signals with adequate resolution. The dual 12-bit DACs drive bias voltages or stimulation waveforms, and the 64-LQFP footprint fits handheld enclosures. Use it between the battery and the sensor analog front-end with the ADC reference tied to a low-noise external bandgap. Unlike higher-power ARM Cortex MCUs, the F149 adds no switching noise to the analog signal chain and keeps quiescent current minimal.
Recommended
Smart Utility Metering (Electricity, Water, Gas)
Smart electricity, water, and gas meters run on the MSP430F149IPMR's ultra-low standby and integrated 12-bit ADC. The 60 KB Flash hosts metering firmware plus calibration tables, and the hardware multiplier speeds RMS and power-factor math without loading the CPU. Real-time clock behavior comes from the integrated 32 kHz oscillator, while two USARTs interface to metrology front-ends and wireless modules (RF, PLC). Sleep current of 1.6 µA lets battery-backed meters survive 10+ years, and the 1.8 V to 3.6 V range accepts direct LiSOCl2 cell connection. Place an LDO or ferrite between the cell and AVCC for ADC noise immunity.
Recommended
Industrial Data Loggers and Sensor Nodes
Industrial data loggers and wireless sensor nodes benefit from the MSP430F149IPMR's mix of analog, memory, and low-power capability. The 60 KB Flash stores buffer plus protocol stacks, and 2 KB SRAM holds time-stamped sensor reads between transmissions. The 12-bit ADC with 8 inputs directly digitizes 4-20 mA / 0-10 V loops (after signal conditioning), while the comparator serves as a threshold alarm. Two USARTs talk to RS-485 transceivers or sub-GHz radios; the I2C port handles external EEPROM or sensors. The 5 power-saving modes let the device wake, sample, transmit, and return to sleep within milliseconds. Trade-off vs higher-MHz parts: slower CPU means careful code tuning for protocol-heavy tasks.
Recommended
Battery-Powered Remote Controls / Key Fobs
Battery-powered remote controls and key fobs run for years on a coin cell thanks to the MSP430F149IPMR's 0.1 µA off-mode and <6 µs wake-up. The 64-LQFP integrates pushbutton debouncing, RF link control (via SPI to an external transceiver), LED driving through DAC, and security/authentication code in 60 KB of Flash. The hardware multiplier accelerates rolling-code encryption, and the on-chip comparator wakes the MCU on first keystroke without external circuitry. Operating from 1.8 V to 3.6 V lets the design run directly from a CR2032 cell without a boost converter. Trade-off vs smaller QFN parts: 64-LQFP is over-spec for very compact fobs.
Recommended
Consumer Electronics with Display/Motor Control
Consumer devices such as e-bike dashboards, fan controllers, and small appliances use the MSP430F149IPMR for its 16-bit timers, 12-bit ADC for setpoint reading, and dual DACs for driving audio or motor references. The 60 KB Flash fits USB-CDC stacks or BLE controller libraries, while the 2 KB SRAM supports display framebuffers for small character LCDs. The two USARTs interface to BLE modules and motor driver ICs; the I2C bus talks to EEPROM and sensor ICs. Active current of 280 µA at 1 MHz / 2.2 V means battery-powered segments are still practical. Use the integrated 32 kHz oscillator for RTC-free design where the mains is the time source.
Recommended
Security and Alarm Systems
Security panels, PIR detectors, and glass-break alarm sensors rely on the MSP430F149IPMR's low standby draw and integrated analog. The 12-bit ADC digitizes thermistor or PIR sensor outputs, the comparator provides instant threshold alarms, and the USARTs link to RF or wired keypads. With 60 KB Flash, the part stores event logs and encryption keys; with 2 KB SRAM, it buffers alarm events before transmission. Off-mode current of 0.1 µA with RAM retention lets battery-backed detectors last 5+ years. Operating range of 1.8 V to 3.6 V accepts direct connection to 3 V lithium backup cells without regulation. Trade-off: not AEC-Q100, so not directly automotive-grade without further qualification.
Recommended
Recommended Products Summary
Engineering reference data for MSP430F149IPMR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MSP430F149IPMRR | MSP430F1491IPMG4 | MSP430F1491IPMRG4 | MSP430F1471IPMRG4 | MSP430F147IPMRG4 |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 64-LQFP (PM, 10x10 mm) | 64-LQFP (PM, 10x10 mm) - same | 64-LQFP (PM, 10x10 mm) - same | 64-LQFP (PM, 10x10 mm) - same | 64-LQFP (PM, 10x10 mm) - same | 64-LQFP (PM, 10x10 mm) - same |
| Program Memory (Flash) | 60 KB | 60 KB | 60 KB | 60 KB | 32 KB (-47%) | 32 KB (-47%) |
| RAM | 2 KB | 2 KB | 2 KB | 2 KB | 1 KB (-50%) | 1 KB (-50%) |
| DAC | 2x 12-bit | 2x 12-bit | 2x 12-bit | 2x 12-bit | 2x 12-bit | None |
| ADC | 12-bit, 8 channels | 12-bit, 8 channels | 12-bit, 8 channels | 12-bit, 8 channels | 12-bit, 8 channels | 12-bit, 8 channels |
| Maximum Clock Frequency | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz |
| Supply Voltage Range | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| Packaging Format | Tray (IPM) | Reel (-R) | Tray (G4 lead-free) | Reel (-R) G4 lead-free | Reel G4 lead-free | Reel G4 lead-free |
| Lead-Free Finish | Yes (Pb-free) | Yes (Pb-free) | Yes (G4 suffix) | Yes (G4 suffix) | Yes (G4 suffix) | Yes (G4 suffix) |
Key Differentiators
- 60 KB Flash + 2 KB SRAM in 64-LQFP with dual 12-bit DACs (vs MSP430F147IPMRG4)
- Higher integration analog with hardware multiplier (vs MSP430F1471IPMRG4)
- Tray format (low-quantity prototype friendly) (vs MSP430F149IPMRR)
Design Notes
Place a 1 µF ceramic decoupling capacitor (X7R) within 5 mm of each DVCC pin (1 and 64), and a 100 nF ceramic within 5 mm of AVCC (pin 3) with a separate ground return to AVSS. Connect DVCC and AVCC through a small ferrite bead to isolate analog switching noise from the digital supply. The 1.8 V to 3.6 V supply range allows direct operation from two alkaline cells; if running from a noisy USB-derived rail, add an LDO in front of AVCC for ADC noise immunity.
Route the 32 kHz crystal traces (XIN, XOUT) symmetrically, keep them shorter than 5 mm, and surround them with a guard ground connected to AVSS to minimize noise coupling into the real-time clock. Place the crystal on the same side as the MCU and avoid routing digital signals under it. Keep ADC analog traces (P6.0-P6.7) short and away from the crystal and switching signals to preserve ADC accuracy.
Do not leave unused analog pins floating - tie them to AVSS or AVCC through 100 kΩ resistors to prevent ADC input leakage from biasing the SAR capacitor. Configure unused GPIO pins as outputs to minimize quiescent current. Enable the watchdog timer (WDT+) in production firmware to recover from software lockups, and configure the SVS (Supply Voltage Supervisor) for brownout protection at 1.8 V to avoid Flash corruption during battery dips.
For ADC measurements requiring full 12-bit accuracy, buffer the input signal with an op-amp rail-to-rail I/O configured in unity-gain to keep source impedance below 1 kΩ; the F149's ADC sampling capacitor (15 pF) draws a 20 ns charge that distorts readings from higher-impedance sources. Place a 100 nF ceramic between Vref+ and Vref- close to the pins, and use a low-noise external reference (REF3133 or equivalent) rather than the internal 2.5 V reference if absolute accuracy is required.
Compliance Information
RoHS-compliant per TI product page. The G4 suffix indicates lead-free / Pb-free finish suitable for reflow soldering. Not AEC-Q100 qualified; for automotive applications, an AEC-Q100 grade MSP430 part (e.g. MSP430F1491IPMRG4 in some revisions) may be available from TI. Halogen-free status not explicitly stated on datasheet.
