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Texas Instruments MSP430F6433IPZR
- Part No.:
- MSP430F6433IPZR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
MSP430F6433IPZR.pdf
- Description:
- IC MCU 16BIT 128KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,333
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Product details
Overview
MSP430F6433IPZR from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller with 128 KB flash, 10 KB RAM, integrated 3.3-V LDO, 12-bit ADC (200 ksps, 16 channels), dual 12-bit DACs, RTC with battery backup, LCD driver (160 segments), and four 16-bit timers - deployed in handheld meters and thermostats requiring extended battery life.
For engineers reviewing the MSP430F6433IPZR datasheet, MSP430F6433IPZR pinout, MSP430F6433IPZR application, or MSP430F6433IPZR equivalent, key selection criteria include standby current (1.8 µA at 3.0 V), wake-up time (3 µs), LQFP-100 package compatibility, and absence of on-chip DACs compared to higher-tier F6438/F6435 variants.
Technical Context
The MSP430F6433IPZR implements a unified clock system with FLL stabilization, VLO/REFO internal sources, and support for 32-kHz XT1 and up to 32-MHz XT2 crystals. Its power management includes programmable LDO core regulation, supply supervision, and five low-power modes (LPM0–LPM4.5) optimized for sensor node duty cycling.
Peripherals are tightly integrated: two USCI modules support UART/IrDA/SPI (USCI_A) and I²C/SPI (USCI_B); ADC12_A features autoscan and internal reference options (1.5/2.0/2.5 V); and the RTC_B module supports alarm and calendar functions with VBAT backup capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with constant generators and 20-MHz max system clock - enables high code efficiency and deterministic real-time response. |
| Memory | 128 KB flash / 10 KB RAM - sufficient for complex sensor fusion algorithms and firmware updates without external memory. |
| Low-Power Standby (LPM3) | 1.8 µA at 2.2 V - allows multi-year operation on coin-cell batteries in always-on monitoring applications. |
| Wake-up Time | 3 µs from LPM3 - ensures rapid reaction to external interrupts (e.g., sensor triggers) without missing critical events. |
| ADC Performance | 12-bit, 200 ksps, 16-channel (12 external + 4 internal) with autoscan - supports simultaneous sampling of multiple analog sensors. |
| LCD Driver | 160-segment bias-controlled driver with contrast control - directly drives segment-based displays in portable instruments without external glass drivers. |
| Package | LQFP-100 (14 mm × 14 mm) - standard surface-mount footprint compatible with industrial reflow processes and manual inspection. |
Pinout & Package
LQFP-100 package with 74 GPIO pins, including dedicated LCD segment/common lines (S0–S42, COM0–COM3), analog inputs (A0–A15), timer capture/compare (TA0–TA2, TB0), USCI signals (UCAx/UCAx), and crystal/oscillator connections (XIN/XOUT, XT2IN/XT2OUT).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST/NMI/SBWTDIO | Reset / Non-maskable interrupt / JTAG debug input | Single-pin multifunction interface for safe reset initiation, fault-triggered NMI, and 4-wire Spy-Bi-Wire programming. |
| P1.0/TA0CLK/ACLK/S39 | Timer A0 clock source / Auxiliary clock input / Segment 39 | Configurable as low-frequency clock input (e.g., 32-kHz crystal) or LCD segment driver - enables synchronized timing and display control. |
| P5.0/VREF+/VeREF+ | ADC/DAC reference voltage positive input | Accepts external reference or connects to internal 1.5/2.0/2.5-V reference - ensures stable conversion accuracy across temperature and supply variation. |
| P7.2/XT2IN | High-frequency crystal oscillator input | Supports up to 32-MHz crystal or external clock source - enables precise high-speed timing for communication or PWM generation. |
| P8.2/UCA1TXD/UCA1SIMO/S13 | USCI_A1 transmit data / SPI master out / Segment 13 | Tri-state configurable pin for UART transmission, SPI data output, or LCD segment drive - reduces pin count via functional multiplexing. |
Key Features
| Feature | Design Value |
|---|---|
| Fully integrated 3.3-V LDO | Eliminates need for external voltage regulator - simplifies power design and reduces BOM cost in single-rail systems. |
| Hardware multiplier (MPY32) | Accelerates 32-bit arithmetic operations - improves execution speed of filtering, FFT, or cryptographic routines in firmware. |
| 6-channel DMA controller | Enables peripheral-to-memory transfers without CPU intervention - preserves low-power mode residency during ADC sampling or LCD refresh. |
| RTC_B with battery backup | Maintains accurate timekeeping during main power loss using VBAT - essential for timestamping in data loggers and alarm scheduling in thermostats. |
| Integrated LCD_B driver | Drives up to 160 segments with software-configurable bias and contrast - removes external LCD controller IC in portable instrumentation. |
Applications
| Analog Sensor Systems | Digital Motor Control |
|---|---|
Use Scenario: Battery-powered environmental monitor measuring temperature, humidity, and CO₂ via analog sensor outputs. IC Role / Device Role / Timing Role: Central MCU executing sensor calibration, ADC conversion, data logging, and LCD display update. Use Value: Ultra-low standby current (1.8 µA) extends operational life to >5 years on CR2032; integrated ADC and RTC enable autonomous periodic sampling. | Use Scenario: Closed-loop fan speed controller in HVAC equipment using hall-effect rotor feedback and PWM-driven MOSFET gate. IC Role / Device Role / Timing Role: Real-time motor commutation engine managing TA0/TB0 PWM generation, ADC current sensing, and thermal shutdown logic. Use Value: 3-µs wake-up and deterministic 20-MHz timer resolution ensure precise phase alignment and jitter-free PWM output. |
| Thermostats | Hand-held Meters |
Use Scenario: Residential programmable thermostat with ambient temperature sensing, user keypad interface, and segmented LCD display. IC Role / Device Role / Timing Role: System controller handling touch-key scanning, PID temperature regulation, RTC-based scheduling, and LCD segment driving. Use Value: Integrated 160-segment LCD driver eliminates external display IC; LDO and internal references reduce external component count by ≥4. | Use Scenario: Portable multimeter acquiring voltage, current, and resistance readings with autoranging and hold functionality. IC Role / Device Role / Timing Role: Signal acquisition processor performing auto-scaling ADC conversions, digital filtering, and numeric display formatting. Use Value: 12-bit ADC with internal 2.5-V reference provides ±0.02% full-scale accuracy; 200-ksps sampling supports fast continuity testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F6436IPZR | Same 128 KB flash / 18 KB RAM, but retains dual 12-bit DACs and adds USB interface - not present in MSP430F6433IPZR. | Suitable where analog output (e.g., sensor calibration voltage) or host connectivity is required; incompatible if DACs are unused and cost sensitivity is high. | Select MSP430F6436IPZR only when DAC or USB functionality is needed; otherwise MSP430F6433IPZR offers lower unit cost and identical core peripherals. |
| MSP430F6435IPZR | 256 KB flash / 18 KB RAM, same peripheral set as MSP430F6433IPZR (no DACs), but larger memory for firmware expansion or bootloader separation. | Better suited for field-upgradable devices or those requiring secure boot partitioning; over-provisioned memory may increase cost unnecessarily in fixed-function designs. | Choose MSP430F6435IPZR when future firmware growth or dual-bank OTA updates are planned; MSP430F6433IPZR suffices for static, space-constrained applications. |
Compared with MSP430F6436IPZR and MSP430F6435IPZR, the MSP430F6433IPZR delivers optimal cost-efficiency for LCD-based sensor nodes where DACs are unnecessary and flash headroom is limited - preserving all critical timing, power, and interface capabilities in the LQFP-100 form factor.
Availability
MSP430F6433IPZR is available at Aetrix Electronics and suitable for handheld meters, thermostats, and analog sensor systems requiring stable component supply, long-term lifecycle assurance, and TI-qualified industrial-grade reliability.
Supply support for MSP430F6433IPZR 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 broad industrial and automotive qualification.
The MSP430F643x product line targets ultra-low-power portable measurement applications - emphasizing extended battery life, integrated analog front-ends, and system-level integration to minimize external components.
FAQ
What is the maximum operating frequency of the MSP430F6433IPZR?
The MSP430F6433IPZR supports a maximum system clock frequency of 20 MHz, enabled by its digitally controlled oscillator (DCO) and FLL-based clock stabilization. This frequency is confirmed in the device's electrical specifications (Section 8.20, DCO Frequency) and is achievable across the full 1.8–3.6-V supply range. The MSP430F6433IPZR maintains timing integrity at this rate while delivering 270 µA/MHz active-mode current at 3.0 V.
Does the MSP430F6433IPZR include an integrated DAC?
No, the MSP430F6433IPZR does not include integrated DACs. Per the official Device Comparison table (Table 6-1), DAC12_A channel count is marked "–" for MSP430F6433, distinguishing it from MSP430F6438 and MSP430F6435 which feature two 12-bit DACs. This omission is intentional in the MSP430F6433IPZR's feature set and aligns with its role as a cost-optimized variant for applications requiring ADC-only signal acquisition.
What package type is used for the MSP430F6433IPZR?
The MSP430F6433IPZR uses a 100-pin LQFP (PZ) package measuring 14 mm × 14 mm. This is explicitly documented in TI's SLAS720F datasheet Section 11 and confirmed in the Device Information table. The PZ package provides 74 general-purpose I/O pins and is compatible with standard PCB assembly processes, including reflow soldering and automated optical inspection.
How much RAM does the MSP430F6433IPZR have?
The MSP430F6433IPZR integrates 10 KB of on-chip RAM, as specified in Table 6-1 (Device Comparison) of the SLAS720F datasheet. This includes 8 bytes of dedicated backup RAM retained during LPM3.5/LPM4.5 modes. The RAM is organized as general-purpose SRAM accessible by the CPU and DMA controller, supporting real-time data buffering and stack operations without external memory dependency.
Is the MSP430F6433IPZR pin-compatible with other MSP430F643x devices in the same package?
Yes, the MSP430F6433IPZR is pin-compatible with MSP430F6436IPZR and MSP430F6435IPZR in the 100-pin LQFP (PZ) package, as verified by identical pin diagrams in Figures 7-1 and 7-2 of the SLAS720F datasheet. All share identical pin numbering, I/O mapping, and peripheral signal assignments - enabling hardware reuse across firmware variants without PCB redesign.
MSP430F6433IPZR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 100-LQFP
- Series:
- MSP430F6xx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPUXV2
- Core Size:
- 16-Bit
- Speed:
- 20MHz
- Connectivity:
- I2C, IrDA, LINbus, SCI, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, LCD, POR, PWM, WDT
- Number of I/O:
- 74
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 10K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 16x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430F6433IPZR FAQ
1.How can I place an order for MSP430F6433IPZR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F6433IPZR 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 MSP430F6433IPZR reliable?
The price and inventory of MSP430F6433IPZR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F6433IPZR is usually 5 days.
3.What payment methods are accepted for MSP430F6433IPZR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F6433IPZR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F6433IPZR?
MSP430F6433IPZR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F6433IPZR 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 MSP430F6433IPZR?
For technical support, including MSP430F6433IPZR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F6433IPZR requirements.
6.How does Aetrix verify that MSP430F6433IPZR is sourced from the original manufacturer or authorized distributors?
All MSP430F6433IPZR 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 MSP430F6433IPZR meets industry standards.
7.What is the process for return or replacement of MSP430F6433IPZR?
All MSP430F6433IPZR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F6433IPZR, 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 MSP430F6433IPZR part is unused and in its original packaging.
Return procedure for MSP430F6433IPZR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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