Texas Instruments MSP430F6765IPZ

Overview

MSP430F6765IPZ from Texas Instruments is a polyphase metering SoC designed for 3-phase electronic watt-hour meters, featuring six 24-bit sigma-delta ADCs, 128KB flash, 16KB RAM, and support for ANSI C12.20/IEC 62053 compliance in utility revenue metering applications.

For engineers reviewing the MSP430F6765IPZ datasheet, MSP430F6765IPZ pinout, MSP430F6765IPZ application, or MSP430F6765IPZ equivalent, key selection criteria include its 100-pin LQFP package, 62 I/O count, ultra-low-power LPM3.5 mode (0.34 µA), LCD driver for 320 segments, and integrated AES-128 encryption for anti-tamper security in smart meter deployments.

Technical Context

The MSP430F6765IPZ implements a dedicated energy measurement architecture with six independent SD24_B sigma-delta modulators for phase current/voltage sensing, plus a system 10-bit ADC for auxiliary measurements. Its 25-MHz CPU with 32-bit hardware multiplier executes TI's certified energy measurement library for real-time kWh/kVARh calculation.

It integrates dual power domains (AVCC/DVCC), programmable auxiliary supply switching (AUXVCC1–3), RTC with crystal offset calibration, and seven eUSCI modules configurable as UART/SPI/I²C - all operating across –40°C to 85°C industrial temperature range.

Key Specifications

Pinout & Package

100-pin LQFP (PZ) package, 14 mm × 14 mm body size, 0.5 mm pitch, with 62 general-purpose I/O pins and dedicated analog/energy measurement terminals including SDxP/N, VREF, AVSS/AVCC, AUXVCCx, and RTC capacitor pins.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar polyphase metering SoC applications.

Compared with MSP430F6766IPZ, the MSP430F6765IPZ trades flash capacity for lower unit cost in fixed-function meters; compared with MSP430F6745IPZ, it adds two SD24_B channels and dedicated pulse outputs essential for ANSI-compliant 3-phase revenue metering.

Availability

MSP430F6765IPZ is available at Aetrix Electronics and suitable for utility metering, industrial energy monitoring, and smart grid infrastructure projects requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for MSP430F6765IPZ 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 utility metering domain expertise.

The MSP430F676x family is engineered specifically for polyphase revenue metering - integrating metrology-grade ADCs, low-power real-time processing, and security features into a single SoC to replace multi-chip meter designs.

FAQ

What metrology standards does the MSP430F6765IPZ support out of the box?

The MSP430F6765IPZ executes TI's certified energy measurement software library, enabling compliance with ANSI C12.20 Class 0.2 and IEC 62053-22 Class 0.5S standards. Its six 24-bit sigma-delta ADCs, digital phase correction, and temperature-compensated calculations deliver <0.1% accuracy over 2000:1 dynamic range - verified per standard test procedures in the device's metrology validation report. The MSP430F6765IPZ requires no external calibration components to meet these specifications.

Does the MSP430F6765IPZ support neutral current measurement in 3-phase 4-wire systems?

Yes, the MSP430F6765IPZ supports full 3-phase 4-wire metering including neutral current measurement. It provides six independent SD24_B sigma-delta modulators - typically allocated as three for phase currents (IA, IB, IC), one for neutral current (Ineutral), and two for phase voltages (VA, VB, VC) - with differential inputs, programmable gain, and simultaneous sampling. This architecture is explicitly validated in TI's MSP430F6765IPZ application diagram for star-connected systems.

What is the lowest power mode available on the MSP430F6765IPZ and its typical current draw?

The MSP430F6765IPZ supports LPM4.5 (shutdown mode) drawing 0.18 µA at 3 V, and LPM3.5 (RTC mode) drawing 0.34 µA at 3 V - both retaining RTC operation and SRAM retention. In LPM3.5, the device wakes in <5 µs and maintains calendar time during AC mains failure, enabling >1-year battery-backed operation. These values are measured per SLAS768E specification table 5.5 under recommended operating conditions.

Can the MSP430F6765IPZ drive a 320-segment LCD directly without external bias circuitry?

Yes, the MSP430F6765IPZ integrates a full-featured LCD_C peripheral supporting up to 320 segments using 8 commons (COM0–COM7) and 40 segments (S0–S39). It includes programmable charge pump, contrast control, and blinking capability - eliminating need for external LCD bias generators. The LCDCAP/R33 pin provides external capacitor connection for stable operation, and the driver operates down to 1.8 V supply, matching the MSP430F6765IPZ's wide input voltage range.

How many communication interfaces does the MSP430F6765IPZ provide, and are they configurable?

The MSP430F6765IPZ provides six enhanced Universal Serial Communication Interfaces (eUSCI), each configurable as UART, SPI, or I²C. Specifically, it supports up to four UARTs, six SPIs, or two I²C ports - with flexible pin mapping across Ports P2–P4. This allows concurrent use of RS-485 (for HAN), SPI (for PLC modem), and I²C (for temperature/humidity sensors) without external bus switches - a capability confirmed in the device comparison table and terminal function descriptions of SLAS768E.