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Texas Instruments MSP430F5256IZQE
- Part No.:
- MSP430F5256IZQE
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 80-VFBGA
- Datasheet:
-
MSP430F5256IZQE.pdf
- Description:
- IC MCU 16BIT 128KB FLASH 80BGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,698
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Product details
Overview
MSP430F5256IZQE from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal microcontroller with dual-supply operation (DVCC/DVIO), 128 KB flash, 16 KB RAM, four USCI_A and four USCI_B modules, and a 10-bit ADC with internal reference. It delivers 290 µA/MHz active-mode current at 3.0 V and supports 35 general-purpose I/Os on the 1.8-V DVIO rail for sensor hub and system controller applications.
For engineers reviewing the MSP430F5256IZQE datasheet, MSP430F5256IZQE pinout, MSP430F5256IZQE application, or MSP430F5256IZQE equivalent, key selection criteria include split-rail I/O voltage support (1.62–1.98 V DVIO / 1.8–3.6 V DVCC), LPM3 standby current of 2.3 µA at 3.0 V, 3.5 µs wake-up time, RTC integration, and MicroStar Junior BGA (80-pin) package compatibility.
Technical Context
The MSP430F5256IZQE implements a unified clock system with FLL stabilization, VLO and REFO internal sources, XT1 (32-kHz crystal), and XT2 (up to 32-MHz HF crystal). Its power management includes a programmable LDO core regulator, supply supervision, and brownout detection across both DVCC and DVIO domains.
Peripherals include four 16-bit timers (TA0/TA1/TA2/TB0), hardware multiplier supporting 32-bit operations, 3-channel DMA, comparator_B with 8 channels, and full-featured USCI modules enabling concurrent UART/IrDA/SPI (USCI_A) and I²C/SPI (USCI_B) communication - all operating independently under their respective voltage rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPUXV2 with extended memory addressing up to 25-MHz system clock |
| Memory | 128 KB flash + 16 KB RAM; enables complex sensor fusion algorithms and real-time data logging without external memory |
| Power Modes | LPM3 standby: 2.3 µA at 3.0 V; LPM4 shutdown: 1.3 µA; LPM4.5 deep shutdown: 0.18 µA - ideal for battery-backed always-on operation |
| I/O Voltage Rails | Dual-supply: DVCC = 1.8–3.6 V, DVIO = 1.62–1.98 V - eliminates level shifters when interfacing with 1.8-V application processors |
| Serial Interfaces | Four USCI_A (UART/IrDA/SPI) + four USCI_B (I²C/SPI); supports eight concurrent hardware serial links for multi-sensor systems |
| Analog Peripherals | 10-bit ADC10_A with 12 input channels (10 external, 2 internal), sample-and-hold, and built-in reference - suitable for battery monitoring and environmental sensing |
| Real-Time Clock | RTC_A module with alarm capability and crystal support (XT1) - maintains timekeeping in LPM3 with full RAM retention |
Pinout & Package
Package: MicroStar Junior™ BGA (80-pin), 5 mm × 5 mm body size. Pinout validated per TI SLAS903D datasheet Section 7.1–7.2 for ZQE package.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.x (x=0–7) | DVIO-domain GPIO / Timer_A0/1 inputs | 1.8-V tolerant I/O with interrupt/wakeup capability; supports clock input (P1.0/ACLK) and capture/compare functions |
| P2.x (x=0–7) | DVIO-domain GPIO / USCI_B3 / RTCCLK | Configurable for I²C/SPI slave or master; P2.6 provides RTC clock source independent of main system clock |
| P3.x (x=0–4) | DVIO-domain GPIO / USCI_B0 / USCI_A0 | Dual-function pins supporting I²C (SCL/SDA) and UART (TXD/RXD); enable direct connection to touch controllers or accelerometers |
| P4.x (x=0–7) | DVIO-domain GPIO / USCI_B1 / USCI_A1 | Peripheral multiplexing allows dedicated I²C and SPI buses for separate sensor clusters without software arbitration |
| P5.x (x=0–5) | DVCC-domain GPIO / ADC inputs / XT1 | 3.0-V domain I/O; P5.0/P5.1 serve as ADC reference inputs (VeREF+/VeREF−); P5.4/P5.5 support 32-kHz crystal |
| P6.x (x=0–7) | DVCC-domain GPIO / Comparator_B / TA2 | High-drive-strength outputs for analog comparators and timer clock routing; supports low-latency event detection |
| P7.x (x=0–5) | DVIO-domain GPIO / USCI_A3 | Additional UART/SPI interface for auxiliary communication; supports IrDA encoding/decoding |
| VQFN-specific pins omitted | N/A | ZQE package has no exposed thermal pad; all power/ground pins are ball-mounted per TI mechanical drawing |
Key Features
| Feature | Design Value |
|---|---|
| Dual-voltage I/O architecture | Enables direct interface to 1.8-V application processors and sensors without external level translators, reducing BOM count and PCB area |
| Ultra-low-power LPM3 mode | 2.3 µA at 3.0 V with RTC, watchdog, and full RAM retention - extends coin-cell battery life to multi-year operation in data loggers |
| Four independent USCI_B modules | Supports up to four concurrent I²C buses (e.g., for ambient light, temperature, humidity, and pressure sensors), eliminating software bit-banging overhead |
| Hardware multiplier (MPY32) | Accelerates 32-bit arithmetic for digital filtering and sensor calibration routines, reducing CPU load and active-mode duration |
| RTC_A with alarm and crystal support | Provides autonomous timekeeping and scheduled wake-up events while main CPU remains in LPM4, critical for periodic sensor sampling |
Applications
| Wearable Health Monitor | Smart Home Sensor Hub |
|---|---|
Use Scenario: Continuous acquisition of ECG, accelerometer, and skin temperature data from multiple analog/digital sensors on a wrist-worn device powered by a CR2032 coin cell. IC Role / Device Role / Timing Role: System controller managing sensor polling, data aggregation, and BLE subsystem wake-up; RTC_A schedules 100-ms sampling intervals. Use Value: 1.8-V DVIO rail interfaces directly with low-voltage MEMS sensors; LPM3 current of 2.3 µA enables >2-year battery life with daily sync. | Use Scenario: Central node aggregating data from Zigbee-connected door/window sensors, CO detectors, and HVAC controls in a residential automation gateway. IC Role / Device Role / Timing Role: Low-power coordinator translating protocols (I²C → UART → Zigbee stack); TA0 generates precise 32.768-kHz timing for wireless packet scheduling. Use Value: Four USCI_B modules allow isolated I²C buses per sensor type; 35 DVIO I/Os support expansion headers for future add-ons without redesign. |
| Industrial Battery Management Unit | Portable Diagnostic Tool |
Use Scenario: Monitoring voltage, current, and temperature of Li-ion packs in cordless power tools, with fault logging and charge-state reporting via USB-UART bridge. IC Role / Device Role / Timing Role: Analog front-end controller performing ADC conversions, comparator-based overvoltage detection, and nonvolatile event logging to flash. Use Value: 10-bit ADC10_A with internal reference ensures ±1% measurement accuracy across 0–4.2 V range; 128 KB flash stores firmware + 10k-cycle event history. | Use Scenario: Handheld tool reading OBD-II signals, displaying live engine parameters, and storing trip logs on microSD card via SPI interface. IC Role / Device Role / Timing Role: Host MCU handling CAN bus parsing (via external transceiver), display refresh, and SD card file I/O using DMA-driven transfers. Use Value: 3-channel DMA offloads SPI/UART traffic from CPU; USCI_A3 supports IrDA for legacy diagnostic equipment pairing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F5252IZQE | Same 80-pin ZQE package, but only 16 KB RAM and no ADC10_A module | Suitable for pure control tasks without analog sensing; lacks battery voltage monitoring capability | Select when cost-sensitive designs omit analog signal acquisition and require identical footprint |
| MSP430F5256IRGC | VQFN-64 package (9 mm × 9 mm), same memory/peripherals, but different pinout and thermal characteristics | Better suited for prototyping and manual assembly; incompatible with ZQE-restricted PCB layouts | Choose for development boards or space-tolerant industrial designs where BGA rework is impractical |
Compared with MSP430F5252IZQE, the MSP430F5256IZQE adds 10-bit ADC functionality and doubles RAM capacity for richer firmware features; versus MSP430F5256IRGC, it offers identical electrical performance in a smaller 5 mm × 5 mm BGA footprint optimized for high-density portable electronics.
Availability
MSP430F5256IZQE is available at Aetrix Electronics and suitable for wearable health monitors, smart home sensor hubs, and industrial battery management units requiring stable component supply and long-term lifecycle support.
Supply support for MSP430F5256IZQE 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 90 years of innovation in low-power design.
The MSP430F5256IZQE belongs to the MSP430F525x ultra-low-power MCU family, engineered specifically for "always-on" system controller roles in portable and energy-constrained devices where split-rail I/O and sub-µA standby operation are mandatory.
FAQ
What is the maximum operating frequency of the MSP430F5256IZQE?
The MSP430F5256IZQE supports a maximum system clock frequency of 25 MHz, enabled by its integrated FLL control loop and compatibility with HF crystals up to 32 MHz via the XT2 oscillator. This allows deterministic real-time execution of sensor fusion algorithms while maintaining ultra-low power consumption in active mode.
Does the MSP430F5256IZQE support crystal oscillators for real-time clock functionality?
Yes, the MSP430F5256IZQE integrates the RTC_A module with dedicated support for 32-kHz watch crystals connected to P5.4 (XIN) and P5.5 (XOUT). This enables accurate timekeeping in LPM3 mode with full RAM retention and fast 3.5-µs wake-up, making it suitable for time-triggered sensor sampling in battery-powered applications.
How many independent I²C interfaces does the MSP430F5256IZQE provide?
The MSP430F5256IZQE provides four independent USCI_B modules (USCI_B0 through USCI_B3), each capable of full-duplex I²C communication. This allows concurrent connection to up to four separate I²C sensor devices - such as ambient light, temperature, humidity, and pressure sensors - without software arbitration or bus contention.
What is the purpose of the DVIO supply rail on the MSP430F5256IZQE?
The DVIO supply rail (1.62–1.98 V) powers all I/O ports designated for 1.8-V operation (P1.x–P4.x, P7.x), enabling direct interface with 1.8-V application processors, sensors, and peripherals without external level-shifting circuitry. This reduces system complexity, PCB area, and power loss associated with voltage translation.
Is the MSP430F5256IZQE compatible with the MSP430F525x family's bootloader (BSL)?
Yes, the MSP430F5256IZQE includes an integrated UART-based bootloader (BSL) accessible via P3.3/P3.4 (UCA0TXD/UCA0RXD) that supports in-system programming without external hardware. The BSL operates under DVIO supply conditions and requires no external programming voltage, simplifying field firmware updates in deployed devices.
MSP430F5256IZQE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 80-VFBGA
- Series:
- MSP430F5xx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPUXV2
- Core Size:
- 16-Bit
- Speed:
- 25MHz
- Connectivity:
- I2C, IrDA, SCI, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, PWM, WDT
- Number of I/O:
- 53
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 16K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430F5256IZQE FAQ
1.How can I place an order for MSP430F5256IZQE through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F5256IZQE 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 MSP430F5256IZQE reliable?
The price and inventory of MSP430F5256IZQE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F5256IZQE is usually 5 days.
3.What payment methods are accepted for MSP430F5256IZQE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F5256IZQE transactions.
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4.How is shipping managed for MSP430F5256IZQE?
MSP430F5256IZQE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F5256IZQE 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 MSP430F5256IZQE?
For technical support, including MSP430F5256IZQE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F5256IZQE requirements.
6.How does Aetrix verify that MSP430F5256IZQE is sourced from the original manufacturer or authorized distributors?
All MSP430F5256IZQE 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 MSP430F5256IZQE meets industry standards.
7.What is the process for return or replacement of MSP430F5256IZQE?
All MSP430F5256IZQE units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F5256IZQE, 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 MSP430F5256IZQE part is unused and in its original packaging.
Return procedure for MSP430F5256IZQE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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