MSP430FR2422IPW16 - 16MHz FRAM MCU, 7.5KB FRAM | Texas Instruments
MPN: MSP430FR2422IPW16 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.73 | $0.73 |
| 10 | $0.65 | $6.50 |
| 100 | $0.55 | $55.00 |
| 500 | $0.48 | $240.00 |
| 1,000 | $0.42 | $420.00 |
| 3,000 | $0.38 | $1,140.00 |
MSP430FR2422IPW16 Overview
An FRAM microcontroller is a type of embedded MCU that uses Ferroelectric RAM instead of flash as the non-volatile program and data store. FRAM technology delivers near-unlimited write endurance (10^15 cycles vs. flash's 10^5), single-cycle write access, and ~50% lower active power than flash-based MCUs. Within the broader semiconductor taxonomy, FRAM MCUs sit under: microcontroller -> embedded MCU -> ultra-low-power MCU -> FRAM MCU, and are commonly chosen for battery-powered IoT endpoints where frequent data logging or wireless firmware updates would otherwise wear out flash memory.
Key features of the MSP430FR2422 include 7.5 KB of unified FRAM (usable as both program and data memory), 2 KB SRAM, an 8-channel 10-bit SAR ADC with internal reference, two enhanced universal serial communication interfaces supporting UART/SPI/I2C, a 16-bit Timer_A with capture/compare, and five low-power modes (LPM3.5 typically draws <1 µA with RTC). The integrated 10-bit ADC and 1.5 KB of additional FRAM over the sibling MSP430FR2422 family gives designers headroom for data logging without external EEPROM.
The architecture centers on a 16-bit RISC MSP430 CPU16 core with 16 registers, hardware multiplier, and a unified memory map that lets FRAM be partitioned arbitrarily between code and data. The chip also features a wide 1.8 V-3.6 V supply range, brownout reset, and a low-power boron-doped polysilicon process. Performance analysis shows the device achieves 16 MIPS at 16 MHz while consuming ~700 µA/MHz active and ~0.5 µA in LPM3.5 retention.
Typical applications include battery-powered IoT sensor nodes, water/gas metering, electronic shelf labels, HVAC thermostats, wearable health monitors, and any portable sensing application requiring 10-bit analog measurement and years of battery life. Its tiny 16-TSSOP footprint makes it suitable for space-constrained PCB designs.
When designing with the MSP430FR2422IPW16, ensure decoupling is placed close to DVCC/AVCC pins (1 µF + 100 nF) and that unused ADC channels are tied to ground to minimize leakage. For long-term retention in LPM4.5, hold RESET low to enter ship mode and reduce quiescent current to <100 nA.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for MSP430FR2422IPW16 — 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 MSP430FR2422IPW16 (same form factor and footprint) — differing in Package, ADC, Communication Interfaces, Core, MSL Level.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MSP430FR2433IPW16
✅ Drop-In📋 Reference alternative (not in catalog)
MSP430FR2422IPW16R
✅ Drop-In📋 Reference alternative (not in catalog)
MSP430FR2422IPW16-Q1
✅ Drop-In📋 Reference alternative (not in catalog)
MSP430FR2355TPTR
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.2 / Unit
View Datasheet →MKL03Z32VFK4R
✅ Drop-In✓ In Stock
$1.32 / Unit
View Datasheet →MC9S08SE8VWL
✅ Drop-In✓ In Stock
$2.34 / Unit
View Datasheet →MSP430FR2422IPW16 Maximum Ratings & Electrical Characteristics
| Core Architecture | MSP430 CPU16 (16-bit RISC) |
| Maximum Clock Frequency | 16 MHz |
| Program Memory (FRAM) | 7.5 KB (7.5K x 8) FRAM |
| SRAM | 2 KB |
| ADC | 10-bit SAR, 8 channels |
| Supply Voltage Range | 1.8 V to 3.6 V |
| Operating Temperature Range | -40°C to +85°C (industrial) |
| Package | 16-TSSOP (PW) |
| Mounting Type | Surface Mount |
| Communication Interfaces | UART / SPI / I2C (eUSCI) |
| Timers | 16-bit Timer_A with capture/compare |
| Low-Power Modes | LPM0-LPM4.5 with RTC |
| Active Current (typical) | ~700 µA/MHz at 16 MHz |
| LPM3.5 Current (RTC) | <1 µA |
| RoHS Status | Compliant |
| Lead-Free / Halogen-Free | Yes / Yes (TI standard) |
MSP430FR2422IPW16 Pin Configuration
| Pin 1 | DVCC — Digital supply voltage (1.8 V to 3.6 V) |
| Pin 2 | AVCC — Analog supply voltage (tie to DVCC) |
| Pin 3 | P1.0/TA0CLK/ACLK — GPIO / Timer_A0 clock input / ACLK output |
| Pin 4 | P1.1/TA0.0 — GPIO / Timer_A0 capture/compare |
| Pin 5 | P1.2/TA0.1 — GPIO / Timer_A0 capture/compare |
| Pin 6 | P1.3/ADC10 — GPIO / ADC10 analog input |
| Pin 7 | P1.4/ADC11 — GPIO / ADC10 analog input |
| Pin 8 | P1.5/ADC12 — GPIO / ADC10 analog input |
| Pin 9 | P1.6/ADC13 — GPIO / ADC10 analog input |
| Pin 10 | P1.7/ADC14 — GPIO / ADC10 analog input |
| Pin 11 | TEST/SBWTCK — Test mode / Spy-Bi-Wire test clock |
| Pin 12 | RESET/SBWTDIO — Reset input / Spy-Bi-Wire test data I/O |
| Pin 13 | DVSS — Digital ground |
| Pin 14 | AVSS — Analog ground |
| Pin 15 | P2.0/XIN — GPIO / crystal oscillator input |
| Pin 16 | P2.1/XOUT — GPIO / crystal oscillator output |
Typical Applications
MSP430FR2422IPW16 is suitable for 7 applications: Battery-Powered IoT Sensor Nodes, Water and Gas Smart Meters, HVAC and Building Thermostats, Wearable Health Monitors, Electronic Shelf Labels (ESL), Industrial Sensor Transmitters, Capacitive Touch User Interface.
Battery-Powered IoT Sensor Nodes
The MSP430FR2422IPW16's LPM3.5 RTC current of <1 µA and 7.5 KB FRAM (instead of flash) deliver 5-10 year coin-cell battery life for wireless sensor nodes. Its 8-channel 10-bit ADC supports thermistor, photocell, and battery-voltage monitoring with a single chip. The 16-TSSOP footprint fits in sub-15 mm² sensor PCBs, while FRAM's 10^15 write endurance handles frequent telemetry logging that would wear out flash-based MCUs within weeks.
Recommended
Water and Gas Smart Meters
The MSP430FR2422IPW16 fits smart-meter designs needing tamper-resistant non-volatile storage of metering data and 10-bit ADC for pulse counting flow sensors. Its unified FRAM allows storing both firmware and metering logs in a single memory map, eliminating external EEPROM and reducing BOM by $0.10-$0.20 per meter. The wide 1.8 V-3.6 V supply tolerates the brownout behavior of lithium-thionyl-chloride primary cells commonly used in AMR/AMI deployments.
Recommended
HVAC and Building Thermostats
In wall-mount thermostats, the MSP430FR2422IPW16 reads thermistor temperatures via its 10-bit ADC, drives an LCD or LED display through GPIO, and wakes the system only when needed. Its LPM3.5 RTC mode keeps the time-of-day clock running while drawing <1 µA - enabling 2x AA battery operation. The 16-TSSOP footprint supports compact PCB layouts alongside small SPI-driven OLED displays and I2C humidity sensors.
Recommended
Wearable Health Monitors
Wearable fitness bands and medical patches benefit from the MSP430FR2422IPW16's <1 µA sleep current and 10-bit ADC for heart-rate or SpO2 signal conditioning front-ends. Its small 16-TSSOP package fits inside wristband modules, while FRAM allows continuous data logging between BLE sync events without endurance concerns. The MSP430 architecture's deterministic interrupt latency supports real-time sensor sampling without an RTOS.
Recommended
Electronic Shelf Labels (ESL)
ESL base stations and tag controllers can use the MSP430FR2422IPW16 to manage wireless protocol timing, ePaper display refresh, and battery telemetry over its 10-bit ADC. The chip's ultra-low standby current extends ESL tag battery life beyond 5 years, while FRAM's fast write speed (no erase cycle) accelerates over-the-air image updates. Its small 16-TSSOP package integrates cleanly into ESL tag sub-gram designs.
Recommended
Industrial Sensor Transmitters
The MSP430FR2422IPW16 supports 4-20 mA loop-powered or 2-wire industrial sensors where it digitizes bridge pressure sensors via its 10-bit ADC, compensates for temperature, and modulates the loop current through GPIO-driven PWM. Its industrial -40°C to +85°C rating and 1.8-3.6 V supply cover harsh factory environments. FRAM eliminates the wear-out concern when sensor logs are written multiple times per second.
Recommended
Capacitive Touch User Interface
The MSP430FR2422IPW16 can drive capacitive touch buttons through its GPIO and Timer_A PWM/capture channels, with the 10-bit ADC measuring charge/discharge profiles. Its wake-on-touch from LPM3.5 draws only ~1 µA until a finger is detected, dramatically extending battery life in remote controls, white goods, and IoT wall switches. FRAM-based firmware storage supports capacitive-tuning parameters that update frequently in production.
Recommended
Recommended Products Summary
Engineering reference data for MSP430FR2422IPW16 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MSP430FR2433IPW16 | MSP430FR2422IPW16R | MSP430FR2422IPW16-Q1 | MSP430FR2355TPTR | MKL03Z32VFK4R | MC9S08SE8VWL |
|---|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | NXP Semiconductors | NXP Semiconductors |
| Package | 16-TSSOP (PW) | 16-TSSOP (PW) | 16-TSSOP (PW) | 16-TSSOP (PW) | 48-TQFP (PT) | 24-QFN (FK) | 28-SOIC (WL) |
| Core | MSP430 CPU16 (16-bit) | MSP430 CPU16 (16-bit) | MSP430 CPU16 (16-bit) | MSP430 CPU16 (16-bit) | MSP430 CPU16 (16-bit) | ARM Cortex-M0+ (32-bit) | S08 (8-bit) |
| Maximum Clock Frequency | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 24 MHz | 32 MHz | 20 MHz |
| Non-volatile Memory | 7.5 KB FRAM | 15.5 KB FRAM | 7.5 KB FRAM | 7.5 KB FRAM | 32 KB FRAM | 32 KB Flash | 8 KB Flash |
| SRAM | 2 KB | 4 KB | 2 KB | 2 KB | 4 KB | 4 KB | 512 B |
| ADC | 10-bit SAR, 8 ch | 10-bit SAR, 8 ch | 10-bit SAR, 8 ch | 10-bit SAR, 8 ch | 12-bit SAR, 8 ch + integrated op-amp | 12-bit SAR, 8 ch | 10-bit SAR, 8 ch |
| Supply Voltage | 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 | 1.71 V to 3.6 V | 2.7 V to 5.5 V |
| Automotive Grade (AEC-Q100) | No | No (Q1 variant available) | No | Yes | No | No | No |
Key Differentiators
- Unified 7.5 KB FRAM replaces flash + EEPROM (vs MSP430G2553 (legacy flash-based))
- Lowest BOM cost 16-bit FRAM MCU in TI value line (vs MSP430FR2433IPW16)
- Cross-brand ARM Cortex-M0+ 32-bit option available (vs MKL03Z32VFK4R (NXP))
- Industrial -40°C to +85°C operating range (vs MSP430FR2422IPW16-Q1 (automotive variant))
Design Notes
Estimated: at 16 MHz active on all peripherals the MSP430FR2422IPW16 draws approximately 11.2 mA from a 3.0 V supply (700 µA/MHz * 16). To preserve battery life, drop to LPM3 with interrupts between sensor samples; this reduces current to <1 µA. Use a 1 µF X7R + 100 nF NP0 decoupling pair within 3 mm of the DVCC and AVCC pins. AVCC must be tied to DVCC if the ADC is not used, but cannot be left floating - this violates the datasheet's analog grounding requirement and may cause erratic resets.
Place the 32.768 kHz crystal within 5 mm of pins 15/16 (XIN/XOUT) with a guard trace tied to DVSS between the crystal traces and any ADC analog traces. Avoid routing the SWDIO/SBWTCK (pins 11/12) signals near switching converter nodes; keep them short and adjacent to the Spy-Bi-Wire programmer header. The exposed thermal pad on PW packages is not present here - the 16-TSSOP PW dissipates ~30 mW typical, well below the 470 mW absolute maximum.
Do not apply voltage to any P1.x pin before the DVCC rail has ramped up, or latch-up may occur on the I/O cells. Always enter LPM4.5 (with core voltage collapsed) by setting PMMCTL0 = PMMPW + PMMCOREV0, otherwise the device will continue drawing ~5 µA. The FRAM memory map is unified - if you write too aggressively (>10^15 cycles), only firmware bug-induced infinite loops can cause wear-out; under normal data-logging at 1 sample per second, endurance is effectively unlimited (>100,000 year lifetime).
The 10-bit ADC reference is internal and shares AVCC; for best 10-bit linearity, use a clean AVCC rail decoupled by a 10 µF tantalum + 100 nF NP0 pair. If using the ADC in a noisy switching environment, average 16 samples to gain ~2 extra bits of effective resolution. The UART eUSCI timing error at 16 MHz baud rates above 115200 bps exceeds 2% - use a hardware flow-control protocol or drop to lower baud rates for reliable long-cable RS-485 connections.
Compliance Information
RoHS and REACH compliant per TI standard product compliance. Not AEC-Q100 qualified - choose MSP430FR2422IPW16-Q1 for automotive. Lead-free and halogen-free per TI's standard PW package materials.
