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Texas Instruments MSP430F6435IPZ
- Part No.:
- MSP430F6435IPZ
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
MSP430F6435IPZ.pdf
- Description:
- IC MCU 16BIT 256KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,500
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Product details
Overview
MSP430F6435IPZ from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller with 256 KB flash, 18 KB RAM, integrated 3.3-V LDO, 12-bit ADC (200 ksps, 16 channels), LCD driver (160 segments), RTC, four 16-bit timers, two USCI modules (UART/IrDA/SPI/I²C), and 74 GPIO pins in a 100-pin LQFP package - deployed in battery-powered sensor meters and thermostats.
For engineers reviewing the MSP430F6435IPZ datasheet, MSP430F6435IPZ pinout, MSP430F6435IPZ application, or MSP430F6435IPZ equivalent, key selection criteria include standby current (1.8 µA at 3.0 V), wake-up time (3 µs), ADC resolution and channel count, LCD segment support, and absence of DAC (vs. MSP430F6438/F6436).
Technical Context
The MSP430F6435IPZ implements a unified clock system with FLL stabilization, dual crystal support (XT1 for 32-kHz, XT2 up to 32 MHz), and low-frequency internal sources (VLO, REFO). Its power management includes programmable core voltage regulation via integrated LDO and brownout detection with hysteresis.
Peripherals are memory-mapped and interrupt-driven: ADC12_A supports autoscan across 12 external + 4 internal channels; USCI_A0/A1 provide UART/IrDA/SPI; USCI_B0/B1 support I²C/SPI; Timer_A instances (5/3/3 capture/compare registers) and Timer_B (7 registers) enable precise PWM and capture timing; RTC_B includes alarm and battery 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 execution. |
| Flash / RAM | 256 KB flash / 18 KB RAM + 8 B backup RAM - supports complex firmware with data logging and RTC-backed state retention. |
| ADC Performance | 12-bit, 200 ksps, 16-channel (12 ext, 4 int), autoscan - allows simultaneous multi-sensor acquisition without CPU intervention. |
| Low-Power Modes | LPM3: 1.8 µA at 3.0 V; LPM3.5 (RTC active): 1.1 µA; LPM4.5 (shutdown): 0.3 µA - extends coin-cell battery life to years in metering applications. |
| Wake-up Time | 3 µs from LPM3 to active mode - meets fast-response requirements in event-triggered sensing systems. |
| LCD Driver | Supports up to 160 segments with contrast control - enables direct drive of alphanumeric or custom segment displays without external controllers. |
| I/O Count | 74 GPIO pins with configurable pullups/downs, Schmitt triggers, and programmable drive strength - accommodates dense sensor/actuator interfacing and multiplexed display control. |
Pinout & Package
LQFP-100 package (14 mm × 14 mm), thermally enhanced with exposed thermal pad; pin-compatible with other MSP430F643x PZ variants but excludes DAC outputs on P6.6/P6.7/P7.6/P7.7 (unlike MSP430F6438/F6436).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST/NMI/SBWTDIO | Reset / NMI input / JTAG debug I/O | Single-pin multifunction interface for safe reset initiation, non-maskable interrupt, and 2-wire Spy-Bi-Wire programming. |
| XIN / XOUT | Low-frequency crystal oscillator terminals | Connects 32.768-kHz watch crystal for precision RTC timing and low-power ACLK source. |
| P1.0–P1.7, P2.0–P2.7, etc. | General-purpose I/O with peripheral mapping | 74 total pins support timer capture/compare, ADC inputs, USCI signals, LCD segments, and RTC functions via port mapping registers. |
| AVCC1/AVSS1, DVCC1/DVSS1 | Analog/digital supply and ground rails | Dual-supply separation minimizes noise coupling between ADC and digital logic; LDO output powers core and peripherals. |
| P5.0/P5.1 | VREF+/VREF− reference inputs | Accept external reference voltage (1.5 V/2.0 V/2.5 V) or internal reference for ADC/DAC accuracy and flexibility. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 3.3-V LDO | Eliminates need for external regulator; supports programmable core voltage scaling to optimize active/standby current. |
| Hardware multiplier (MPY32) | Accelerates 32-bit arithmetic for filtering, FFT, or encryption - reduces CPU load and active-mode duration. |
| 6-channel DMA | Enables zero-CPU-overhead data transfers between ADC, USCI, RAM, and timers - critical for continuous sensor streaming. |
| RTC_B with battery backup | Maintains accurate timekeeping during main power loss using VBAK pin and external capacitor or coin cell. |
| Unified clock system | Automatically selects and stabilizes clock sources (FLL, VLO, REFO, XT1, XT2) - simplifies clock tree design and improves reliability. |
Applications
| Smart Energy Meters | Industrial Thermostats |
|---|---|
Use Scenario: Battery-powered electricity/water/gas meters requiring decade-long operation and tamper-resistant time-stamped logging. IC Role / Device Role / Timing Role: Central controller managing ADC sampling, RTC timestamping, LCD display, secure communication, and ultra-low-power sleep scheduling. Use Value: 1.1 µA RTC-active current (LPM3.5) and 3 µs wake-up ensure responsive measurement while maximizing battery service life. | Use Scenario: Wall-mounted HVAC controllers with ambient temperature/humidity sensing, user interface, and wireless reporting. IC Role / Device Role / Timing Role: Sensor fusion hub integrating analog sensor inputs, driving segmented LCD, and executing PID control loops with precise timer-based PWM. Use Value: 12-bit ADC autoscan and 74 GPIO enable concurrent multi-sensor acquisition and display multiplexing without external components. |
| Hand-Held Test Meters | Remote Sensor Nodes |
Use Scenario: Portable multimeters or environmental monitors powered by AA batteries with backlit LCD and serial data export. IC Role / Device Role / Timing Role: Mixed-signal processor handling analog front-end conditioning, digitization, LCD rendering, IrDA/UART communication, and button interface. Use Value: Integrated LCD driver (160 segments) and dual USCI modules eliminate discrete display drivers and transceivers - reducing BOM and PCB area. | Use Scenario: Wireless sensor nodes in building automation or agricultural monitoring, transmitting data over sub-GHz RF or BLE bridges. IC Role / Device Role / Timing Role: Low-duty-cycle data aggregator sampling sensors, buffering readings in RAM, and triggering RF transmission via USCI_A0 UART or SPI. Use Value: 0.3 µA shutdown current (LPM4.5) and fast wake-up minimize quiescent drain - extending node lifetime beyond 5 years on primary cells. |
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 |
|---|---|---|---|
| MSP430F6436IPZ | 128 KB flash, same 18 KB RAM, identical peripherals except no DAC - matches MSP430F6435IPZ pinout and package. | Suitable where firmware size <128 KB suffices and DAC is unnecessary; lower cost for simpler metering designs. | Select when flash budget allows reduction and DAC functionality is unused - maintains full hardware compatibility. |
| MSP430F6438IPZ | 256 KB flash, 18 KB RAM, adds dual 12-bit DAC (DAC0/DAC1 on P6.6/P6.7/P7.6/P7.7) - same LQFP-100 package but DAC pins differ electrically. | Required for closed-loop control (e.g., analog actuator biasing) or waveform generation; DAC pins conflict if board designed for MSP430F6435IPZ. | Choose only if DAC outputs are needed and PCB layout reserves those pins - not drop-in compatible due to functional pin differences. |
Compared with MSP430F6436IPZ, the MSP430F6435IPZ offers double flash capacity for larger firmware or data buffers without sacrificing power or peripheral set; versus MSP430F6438IPZ, it removes DAC circuitry to reduce cost and leakage, making it optimal for pure sensing/display applications.
Availability
MSP430F6435IPZ is available at Aetrix Electronics and suitable for smart energy meters, industrial thermostats, and hand-held test equipment requiring stable component supply, long-term lifecycle support, and guaranteed traceability.
Supply support for MSP430F6435IPZ 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 decades of ultra-low-power MCU innovation.
The MSP430F643x product line targets portable, battery-operated measurement systems - emphasizing extended runtime, integrated analog front-ends, and robust real-time control in harsh environments.
FAQ
What is the maximum operating frequency of the MSP430F6435IPZ?
The MSP430F6435IPZ supports a maximum system clock frequency of 20 MHz, enabled by its digitally controlled oscillator (DCO) and FLL-based clock stabilization. This frequency is achievable under recommended operating conditions (DVCC = 3.0 V to 3.6 V) and is used for high-speed active-mode processing while maintaining ultra-low-power characteristics in standby modes.
Does the MSP430F6435IPZ include a DAC?
No, the MSP430F6435IPZ does not include a digital-to-analog converter. Unlike the MSP430F6438IPZ and MSP430F6436IPZ, which integrate dual 12-bit DACs, the MSP430F6435IPZ omits DAC circuitry - confirmed in the Device Comparison table and functional block diagram. This simplifies design for applications requiring only ADC, timers, and communication interfaces.
What package type and dimensions does the MSP430F6435IPZ use?
The MSP430F6435IPZ uses a 100-pin LQFP (PZ) package measuring 14 mm × 14 mm with standard 0.5-mm lead pitch. It features an exposed thermal pad on the underside for enhanced heat dissipation and is mechanically and electrically compatible with other MSP430F643x devices in the same PZ variant, including pin-for-pin alignment with MSP430F6436IPZ and MSP430F6438IPZ.
How many I/O pins does the MSP430F6435IPZ provide?
The MSP430F6435IPZ provides 74 general-purpose I/O pins across ports P1–P9 and PJ, each configurable as digital input/output, peripheral function, or LCD segment driver. These pins support interrupt capability, Schmitt-trigger inputs, programmable pullup/pulldown resistors, and multiple drive strengths - enabling flexible interface to sensors, displays, and communication peripherals.
What is the RTC backup capability of the MSP430F6435IPZ?
The MSP430F6435IPZ includes the RTC_B module with dedicated VBAK pin for battery or capacitor backup, retaining time, date, and alarm settings during main power loss. The RTC operates in LPM3.5 mode at 1.1 µA (3.0 V typical), and the 8 B backup RAM preserves critical variables - ensuring uninterrupted timekeeping and state recovery in energy-metering and thermostat applications.
MSP430F6435IPZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 100-LQFP
- Series:
- MSP430F6xx
- Packaging:
- Tray
- 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:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 18K 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:
MSP430F6435IPZ FAQ
1.How can I place an order for MSP430F6435IPZ through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F6435IPZ 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 MSP430F6435IPZ reliable?
The price and inventory of MSP430F6435IPZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F6435IPZ is usually 5 days.
3.What payment methods are accepted for MSP430F6435IPZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F6435IPZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F6435IPZ?
MSP430F6435IPZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F6435IPZ 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 MSP430F6435IPZ?
For technical support, including MSP430F6435IPZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F6435IPZ requirements.
6.How does Aetrix verify that MSP430F6435IPZ is sourced from the original manufacturer or authorized distributors?
All MSP430F6435IPZ 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 MSP430F6435IPZ meets industry standards.
7.What is the process for return or replacement of MSP430F6435IPZ?
All MSP430F6435IPZ units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F6435IPZ, 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 MSP430F6435IPZ part is unused and in its original packaging.
Return procedure for MSP430F6435IPZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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