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Texas Instruments MSP430F5256IZQER
- Part No.:
- MSP430F5256IZQER
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 80-VFBGA
- Datasheet:
-
MSP430F5256IZQER.pdf
- Description:
- IC MCU 16BIT 128KB FLASH 80BGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,457
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Product details
Overview
MSP430F5256IZQER from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal microcontroller designed as an "always-on" system controller for portable and battery-powered applications. It features 128 KB flash, 16 KB RAM, dual-supply operation (DVCC: 1.8–3.6 V; DVIO: 1.62–1.98 V), 35 general-purpose I/Os with up to 16 external interrupts, and four USCI_A and four USCI_B modules supporting UART, IrDA, SPI, and I²C. It targets sensor hub and power-management roles in handsets and tablets.
For engineers reviewing the MSP430F5256IZQER datasheet, MSP430F5256IZQER pinout, MSP430F5256IZQER application, or MSP430F5256IZQER equivalent, key selection criteria include split-rail I/O voltage support (1.8 V DVIO), LPM3 standby current of 2.3 µA at 3.0 V, 3.5 µs wake-up time, integrated RTC with alarm, and hardware multiplier for sensor fusion algorithms.
Technical Context
The MSP430F5256IZQER 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 architecture integrates a programmable LDO core regulator, supply supervision, brownout detection, and four low-power modes (LPM0–LPM4.5) with full RAM retention down to 0.18 µA.
Peripherals include three Timer_A instances (TA0: 5 CC, TA1: 3 CC, TA2: 3 CC), one Timer_B (TB0: 7 CC), a 10-bit ADC10_A with 12 channels (10 external + 2 internal), comparator_B (8 channels), 3-channel DMA, and bootloadable flash with no external programming voltage required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPUXV2 with extended memory addressing, enabling efficient execution of real-time sensor processing code |
| Flash / RAM | 128 KB flash (in-system programmable) and 16 KB RAM - sufficient for multi-sensor aggregation and firmware updates without external memory |
| Supply Rails | Dual-supply: DVCC = 1.8–3.6 V (core/logic); DVIO = 1.62–1.98 V (I/O) - eliminates level shifters when interfacing with 1.8-V application processors |
| Ultra-Low Power | LPM3 standby: 2.3 µA at 3.0 V; LPM4 shutdown: 1.3 µA; LPM4.5: 0.18 µA - enables multi-year battery life in always-on monitoring systems |
| Wake-up Time | 3.5 µs from LPM3 to active mode - supports rapid response to sensor events or interrupt-driven wake triggers |
| Serial Interfaces | Four USCI_A (UART/IrDA/SPI) + four USCI_B (I²C/SPI) - enables concurrent communication with up to eight peripherals (e.g., 4x I²C sensors + 4x SPI actuators) |
| Analog Peripherals | 10-bit ADC10_A (200 ksps, 12-channel), comparator_B (8-channel), internal reference - supports analog sensor signal conditioning and threshold detection without external components |
Pinout & Package
Package: MicroStar Junior™ BGA (80-pin, 5 mm × 5 mm, ZQE). Pinout validated per TI SLAS903D datasheet Section 7.1–7.2 for ZQE package.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0–P1.7 | DVIO-domain GPIO / TA0CLK / ACLK | 1.8-V tolerant I/O with timer clock input and low-frequency oscillator support - suitable for RTC backup and wake-source configuration |
| P2.0–P2.7 | DVIO-domain GPIO / USCI_B3 / RTCCLK / DMAE0 | Multi-function pins supporting I²C/SPI, real-time clock input, and DMA trigger - enables synchronized peripheral control and time-stamped data capture |
| P3.0–P3.4 | DVIO-domain GPIO / USCI_B0 / USCI_A0 | Dual-protocol serial interface pins (I²C + UART/SPI) - allows flexible connectivity to diverse sensors and transceivers on same port group |
| P4.0–P4.7 | DVIO-domain GPIO / USCI_B1 / USCI_A1 | Secondary USCI bank with peripheral multiplexing - expands serial interface count while maintaining 1.8-V I/O compatibility |
| P5.0–P5.5 | DVCC-domain GPIO / ADC inputs / VeREF± | 3.0-V domain analog inputs with dedicated reference terminals - supports high-accuracy ADC measurements using internal or external references |
| P6.0–P6.7 | DVCC-domain GPIO / TA2 / comparator_B | Timer and analog comparator inputs powered by primary rail - used for precision timing, PWM generation, and analog event detection |
| DVIO / DVCC / DVSS | Separate I/O / Core / Ground supplies | Enables independent voltage scaling: DVIO powers all 35 I/Os at 1.8 V; DVCC powers core/peripherals at higher voltage - critical for mixed-voltage system integration |
Key Features
| Feature | Design Value |
|---|---|
| Split-rail I/O architecture | 35 GPIOs operate at 1.8 V (DVIO) while core runs at 3.0 V - removes need for discrete level translators in smartphone/tablet PMIC and sensor hub designs |
| Four independent USCI_A + four USCI_B modules | Eight hardware serial interfaces concurrently active - supports simultaneous I²C sensor reads, UART debug output, SPI display updates, and IrDA remote commands |
| RTC_A module with alarm | Real-time clock with calendar, alarm interrupt, and battery-backed operation - enables scheduled wake-ups and time-triggered system maintenance without host processor involvement |
| Hardware MPY32 multiplier | 32-bit integer multiply-accumulate in single cycle - accelerates sensor fusion math (e.g., quaternion rotation, Kalman filtering) in RAM-resident code |
| Three-channel DMA | Zero-CPU-overhead data movement between peripherals and RAM - essential for continuous ADC sampling, USCI buffering, and timer capture without interrupt latency |
Applications
| Smartphone Sensor Hub | Industrial Data Logger |
|---|---|
Use Scenario: Aggregating accelerometer, gyroscope, and ambient light data while main AP is asleep. IC Role / Device Role / Timing Role: Always-on system controller managing sensor polling, preprocessing, and wake-event arbitration via RTC and comparator_B. Use Value: Reduces system-wide power by >70% vs. AP-based polling; 3.5 µs wake-up ensures responsive gesture detection. | Use Scenario: Battery-powered environmental monitor logging temperature, humidity, and pressure every 10 seconds. IC Role / Device Role / Timing Role: Autonomous data acquisition node using RTC_A alarm to schedule ADC conversions and USCI_B0 I²C reads from sensors. Use Value: Achieves 5+ year battery life via 2.3 µA LPM3 current and zero-active-mode overhead during sleep intervals. |
| Bluetooth® Peripheral Controller | Power-Management Hub |
Use Scenario: BLE beacon or HID device handling connection management, button press detection, and LED feedback. IC Role / Device Role / Timing Role: Low-latency interrupt controller with P1.x/P2.x wake-capable GPIO and USCI_A0 UART for host comms. Use Value: 1.8-V DVIO I/O directly interfaces with BLE SoC logic; 0.18 µA LPM4.5 extends coin-cell lifetime beyond 3 years. | Use Scenario: Centralized voltage/current monitoring and sequencing control across multiple rails in embedded power supplies. IC Role / Device Role / Timing Role: Real-time supervisor using ADC10_A for rail sensing, comparator_B for overvoltage detection, and TA0 for precise timing of sequencing delays. Use Value: Eliminates external supervisors and timers; integrated LDO and SVS provide robust fault response within 1 µs. |
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 |
|---|---|---|---|
| MSP430F5252IZQER | Same 128 KB flash but only 16 KB RAM; identical DVIO/DVCC architecture, timers, USCI count, and power specs | No functional difference in sensor hub or data logger use; identical peripheral set and pinout in ZQE package | Select when cost sensitivity outweighs need for additional RAM headroom in complex firmware |
| MSP430F5254IZQER | Same 128 KB flash/16 KB RAM; differs only in BSL type (UART instead of I²C) - no impact on runtime functionality or pin assignment | Compatible in all runtime applications; BSL protocol choice affects factory programming method only | Prefer when production programming infrastructure uses UART-based BSL tools |
Compared with MSP430F5252IZQER and MSP430F5254IZQER, the MSP430F5256IZQER offers identical low-power performance and peripheral integration but is distinguished by its I²C-capable BSL and inclusion of ADC10_A - making it optimal for analog-intensive sensor hubs requiring in-field calibration via I²C-connected references.
Availability
MSP430F5256IZQER is available at Aetrix Electronics and suitable for smartphone sensor hubs, industrial data loggers, Bluetooth® peripheral controllers, and power-management hubs requiring stable component supply across long-lifecycle embedded programs.
Supply support for MSP430F5256IZQER 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 company specializing in analog, embedded processing, and connectivity technologies with leadership in ultra-low-power design.
The MSP430F525x product line was engineered specifically for "always-on" system controller applications, emphasizing split-rail I/O, sub-µA standby, fast wake-up, and integrated analog peripherals to replace discrete supervisory and interface ICs in portable electronics.
FAQ
What is the operating voltage range for the I/O pins of the MSP430F5256IZQER?
The MSP430F5256IZQER features a dual-supply architecture: its I/O pins are powered by the DVIO rail, which operates from 1.62 V to 1.98 V. This 1.8-V nominal I/O domain enables direct interfacing with modern application processors and sensors without external level-shifting circuitry. The core logic (DVCC) runs separately from 1.8 V to 3.6 V, allowing optimized power partitioning. All 35 GPIOs are DVIO-supplied, as confirmed in the SLAS903D datasheet Section 6.1 and Figure 7-2.
Does the MSP430F5256IZQER support real-time clock functionality with alarm capability?
Yes, the MSP430F5256IZQER integrates the RTC_A module with calendar mode, alarm interrupt generation, and battery-backed operation when supplied via RSTDVCC. It supports 32-kHz crystal (XT1) or internal REFO/VLO sources, and retains full functionality in LPM3 standby mode at 2.3 µA. The alarm can trigger wake-up from any low-power mode, and register access is fully documented in Section 9.9 of the SLAS903D datasheet.
How many hardware serial interfaces does the MSP430F5256IZQER provide, and what protocols do they support?
The MSP430F5256IZQER provides eight dedicated hardware serial interfaces: four USCI_A modules (supporting UART, IrDA, and SPI) and four USCI_B modules (supporting I²C and SPI). Each USCI instance operates independently, enabling concurrent communication - for example, USCI_B0–B3 handling four I²C sensors while USCI_A0–A3 manage UART debug, SPI display, IrDA remote, and SPI EEPROM. This is specified in Table 6-1 and Section 1 Features of SLAS903D.
What is the wake-up time from LPM3 standby mode for the MSP430F5256IZQER?
The MSP430F5256IZQER wakes from LPM3 (standby mode with RTC, watchdog, and full RAM retention) to active mode in 3.5 µs (typical), as measured under standard conditions (3.0 V, 25°C) per Section 8.32 of the SLAS903D datasheet. This fast transition enables responsive handling of sensor interrupts or RTC alarms without perceptible latency in user-facing applications like gesture detection or periodic telemetry uploads.
Is the MSP430F5256IZQER pin-compatible with other members of the MSP430F525x family in the ZQE package?
Yes, all MSP430F525x devices in the MicroStar Junior™ BGA (ZQE) package - including MSP430F5252IZQER, MSP430F5254IZQER, and MSP430F5256IZQER - share identical 80-pin ZQE footprints and pin assignments per TI's SLAS903D datasheet Figure 7-2 and Table 7-1. Functional differences (e.g., ADC presence, BSL type) do not affect pinout, enabling drop-in replacement during design iteration or qualification.
MSP430F5256IZQER 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:
MSP430F5256IZQER FAQ
1.How can I place an order for MSP430F5256IZQER through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F5256IZQER 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 MSP430F5256IZQER reliable?
The price and inventory of MSP430F5256IZQER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F5256IZQER is usually 5 days.
3.What payment methods are accepted for MSP430F5256IZQER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F5256IZQER transactions.
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4.How is shipping managed for MSP430F5256IZQER?
MSP430F5256IZQER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F5256IZQER 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 MSP430F5256IZQER?
For technical support, including MSP430F5256IZQER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F5256IZQER requirements.
6.How does Aetrix verify that MSP430F5256IZQER is sourced from the original manufacturer or authorized distributors?
All MSP430F5256IZQER 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 MSP430F5256IZQER meets industry standards.
7.What is the process for return or replacement of MSP430F5256IZQER?
All MSP430F5256IZQER units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F5256IZQER, 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 MSP430F5256IZQER part is unused and in its original packaging.
Return procedure for MSP430F5256IZQER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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