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Texas Instruments MSP430F4793IPZR
- Part No.:
- MSP430F4793IPZR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
MSP430F4793IPZR.pdf
- Description:
- IC MCU 16BIT 60KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,217
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Product details
Overview
MSP430F4793IPZR from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller designed for single-phase electricity metering. It integrates three 16-bit sigma-delta ADCs with differential PGA inputs, 60KB + 256B flash memory, 2.5KB RAM, and an integrated LCD driver supporting up to 160 segments - enabling direct connection to meter display panels without external drivers.
For engineers reviewing the MSP430F4793IPZR datasheet, MSP430F4793IPZR pinout, MSP430F4793IPZR application, or MSP430F4793IPZR equivalent, this device is selected for precision energy measurement systems requiring sub-μA standby current, fast wake-up (<6 μs), and on-chip metrology-grade analog front-end functionality.
Technical Context
The MSP430F4793IPZR implements a 16-bit RISC CPU with constant generators and 16 general-purpose registers, achieving 62.5-ns instruction cycle time at 16 MHz. Its FLL+ clock system supports multiple oscillators (XT1, XT2, DCO) and generates ACLK, MCLK, and SMCLK with programmable division - enabling precise timing control for metrology sampling and real-time display updates.
It features dual 16-bit timers (Timer_A3 and Timer_B3) with capture/compare and shadow registers, four USCI modules (two UART/IrDA/SPI and two SPI/I²C), on-chip comparator, hardware multiplier (32×32), brownout detector, and supply voltage supervisor with programmable threshold - all optimized for secure, low-drift, long-life utility meter firmware execution.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 registers and 62.5-ns instruction cycle - enables deterministic real-time metering firmware execution. |
| Flash / RAM | 60KB + 256B flash and 2.5KB RAM - sufficient for full metrology algorithm, communication stack (DLMS/IEC 62056), and LCD UI code in single-phase meters. |
| ADC Configuration | Three 16-bit sigma-delta ADCs with differential PGA inputs - supports simultaneous voltage/current/neutral channel sampling with programmable gain for high dynamic range. |
| Power Consumption | Active mode: 280 μA at 1 MHz/2.2 V; Standby: 1.1 μA; Off mode (RAM retention): 0.2 μA - extends battery life in AMI endpoint or backup-powered meters. |
| LCD Driver | Integrated driver for up to 160 segments with contrast control - eliminates external LCD bias IC and reduces BOM cost in meter displays. |
| Operating Voltage | 1.8 V to 3.6 V - compatible with standard coin-cell or supercapacitor backup supplies and primary regulated rails. |
| Package | 100-pin plastic QFP (PZ) - provides ample I/O (72 GPIO) and dedicated analog routing for noise-sensitive metrology signal paths. |
Pinout & Package
Package: 100-pin plastic quad flatpack (PZ), surface-mount, 0.5 mm pitch, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/TA0 | Timer_A input / BSL transmit | Primary UART TX for bootstrap loader programming; also serves as Timer_A capture input for event timing. |
| P1.1/TA0/MCLK | Timer_A input / MCLK output / BSL receive | BSL RX pin; outputs system main clock for external synchronization or debug clock monitoring. |
| A0.0+/A0.0− | SD16_A differential analog input | Dedicated metrology channel input pair for voltage sensing with programmable PGA gain - routed separately to minimize noise coupling. |
| COM0–COM3 | LCD backplane outputs | Four common outputs driving LCD multiplexed segments - enable 4-mux configuration for up to 160-segment displays. |
| RST/NMI | Reset / non-maskable interrupt | Hardware reset input; also accepts NMI events for critical fault handling (e.g., tamper detection or overvoltage). |
| TCK/TMS/TDO/TDI | JTAG test interface | Fully compliant IEEE 1149.1 boundary-scan interface for production programming and in-circuit debugging. |
Key Features
| Feature | Design Value |
|---|---|
| Three 16-bit sigma-delta ADCs | Simultaneous sampling of voltage, current, and neutral channels with >99 dB SNR - meets IEC 62053-21 Class 0.5S accuracy requirements. |
| Integrated LCD driver (160 seg) | On-chip charge pump and contrast control eliminate external bias generator - reduces component count and layout area in meter PCBs. |
| Ultra-low-power operation | 0.2 μA off-mode current with RAM retention - enables >10-year battery life in backup-powered smart meters. |
| USCI modules (4 total) | Dual UART (with auto-baud detect and IrDA) + dual SPI/I²C - supports RS-485 PLC, optical port, and secure element communication concurrently. |
| Hardware multiplier (32×32) | Accelerates RMS, harmonic, and tariff calculation in firmware - avoids software emulation latency in real-time metrology processing. |
| Programmable SVS/SVM | User-configurable voltage monitor thresholds - enables adaptive brownout response and early warning before supply collapse in fluctuating grid conditions. |
Applications
| Single-Phase Electricity Meter | Portable Energy Analyzer |
|---|---|
|
Use Scenario: Residential or commercial kWh meter with pulse output, LCD display, and RS-485/PLC communication. IC Role / Device Role / Timing Role: Primary metrology controller executing sampling, computation, display refresh, and communication protocol stacks. Use Value: Integrated ADCs and LCD driver reduce external components by ≥7 parts; 0.2 μA off-mode enables >10-year battery-backed data retention. |
Use Scenario: Handheld field instrument measuring voltage, current, power factor, and harmonics in live circuits. IC Role / Device Role / Timing Role: Real-time signal acquisition and analysis engine with synchronized multi-channel sampling and local display. Use Value: Three independent sigma-delta ADCs allow concurrent voltage/current/neutral capture at 1 kSPS; 2.5KB RAM buffers waveform data for post-processing. |
| Smart Grid Endpoint Node | Prepayment Meter Controller |
|
Use Scenario: AMI node collecting consumption data and reporting via RF or PLC mesh network. IC Role / Device Role / Timing Role: Low-power host MCU managing secure communication, time-of-use billing, and tamper detection logic. Use Value: Four USCI interfaces support simultaneous optical port (UART), PLC modem (SPI), and secure element (I²C) - no external bus arbitration required. |
Use Scenario: Pay-as-you-go meter with keypad, LCD, magnetic/tamper switch, and credit validation logic. IC Role / Device Role / Timing Role: Secure embedded controller executing credit validation, display management, and load switching. Use Value: On-chip security fuse and BSL password protection prevent unauthorized firmware access; integrated comparator monitors tamper switches directly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar metrology microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F4794IPZR | Includes fourth 16-bit sigma-delta ADC channel; identical package, flash (60KB), RAM (2.5KB), and peripherals. | Required for three-phase meters or designs needing redundant neutral current measurement. | Select when fourth ADC channel is needed for enhanced metrology redundancy or multi-element sensing. |
| MSP430F6736IPZR | Newer generation with higher ADC resolution (24-bit), integrated temperature sensor, and enhanced security (AES-128), but same 100-pin QFP footprint. | Supports advanced diagnostics, thermal compensation, and DLMS/SE security profiles not available in F47x3 series. | Choose for next-gen meters requiring higher accuracy, cryptographic security, or extended feature set beyond legacy F47x3 capabilities. |
Compared with MSP430F4793IPZR, the MSP430F4794IPZR adds one ADC channel without changing power or memory specs, while the MSP430F6736IPZR delivers higher-resolution metrology and hardware security at the cost of firmware migration effort and higher unit price.
Availability
MSP430F4793IPZR is available at Aetrix Electronics and suitable for single-phase electricity metering, portable energy analyzers, and smart grid endpoint nodes requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MSP430F4793IPZR 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 50 years of innovation in low-power microcontrollers.
The MSP430F47xx product line was engineered specifically for utility metering applications, integrating metrology-grade ADCs, LCD drivers, and ultra-low-power modes to meet IEC 62053 and ANSI C12 standards.
FAQ
What is the maximum ADC sampling rate supported by the MSP430F4793IPZR?
The MSP430F4793IPZR's three SD16_A sigma-delta ADCs support up to 1 kSPS per channel with 16-bit resolution and >99 dB SNR. Each ADC operates independently with configurable conversion delay and oversampling ratio - enabling synchronized sampling across voltage, current, and neutral inputs for accurate power calculations in single-phase meters.
Does the MSP430F4793IPZR support JTAG debugging and in-system programming?
Yes, the MSP430F4793IPZR includes full IEEE 1149.1 JTAG boundary-scan support via TCK, TMS, TDO, and TDI pins (pins 93, 92, 90, 91). It is compatible with TI's MSP-FET430UIF and MSP-GANG430 tools for debugging, flash programming, and production testing - no external voltage required.
How many LCD segments can the MSP430F4793IPZR drive, and what mux configurations are supported?
The MSP430F4793IPZR drives up to 160 segments using its integrated LCD_A module with COM0–COM3 outputs. It supports 2-, 3-, and 4-mux configurations - allowing flexible display design from simple numeric readouts to full alphanumeric meter interfaces without external segment drivers.
What is the purpose of the LCDCAP/R33 pin on the MSP430F4793IPZR?
The LCDCAP/R33 pin (pin 59) connects an external capacitor to stabilize the internal charge pump for the LCD driver. It also serves as the most positive analog voltage level (V1) for LCD bias generation - critical for consistent contrast and segment activation across temperature and supply variations in meter displays.
Can the MSP430F4793IPZR operate from a 3.3 V supply while maintaining metrology accuracy?
Yes, the MSP430F4793IPZR operates across 1.8 V to 3.6 V. At 3.3 V, its sigma-delta ADCs maintain full 16-bit linearity and >99 dB SNR when referenced to internal or external VREF; supply voltage supervisor ensures stable operation during brownout conditions common in utility environments.
MSP430F4793IPZR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 100-LQFP
- Series:
- MSP430x4xx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPU16
- Core Size:
- 16-Bit
- Speed:
- 16MHz
- Connectivity:
- I2C, IrDA, LINbus, SCI, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, LCD, POR, PWM, WDT
- Number of I/O:
- 72
- Program Memory Size:
- 60KB (60K x 8 + 256B)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 2.5K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 3x16b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430F4793IPZR FAQ
1.How can I place an order for MSP430F4793IPZR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F4793IPZR 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 MSP430F4793IPZR reliable?
The price and inventory of MSP430F4793IPZR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F4793IPZR is usually 5 days.
3.What payment methods are accepted for MSP430F4793IPZR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F4793IPZR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F4793IPZR?
MSP430F4793IPZR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F4793IPZR 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 MSP430F4793IPZR?
For technical support, including MSP430F4793IPZR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F4793IPZR requirements.
6.How does Aetrix verify that MSP430F4793IPZR is sourced from the original manufacturer or authorized distributors?
All MSP430F4793IPZR 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 MSP430F4793IPZR meets industry standards.
7.What is the process for return or replacement of MSP430F4793IPZR?
All MSP430F4793IPZR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F4793IPZR, 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 MSP430F4793IPZR part is unused and in its original packaging.
Return procedure for MSP430F4793IPZR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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