Texas Instruments MSP430F6765IPZR

Overview

MSP430F6765IPZR 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 <0.1% energy measurement accuracy over 2000:1 dynamic range. It integrates LCD controller (320 segments), AES-128 encryption, RTC with temperature compensation, and supports ANSI C12.20/IEC 62053 compliance in utility metering applications.

For engineers reviewing the MSP430F6765IPZR datasheet, MSP430F6765IPZR pinout, MSP430F6765IPZR application, or MSP430F6765IPZR equivalent, key selection criteria include phase current accuracy, sigma-delta ADC channel count, LQFP-100 package I/O count (62), ultra-low-power LPM3.5 mode (0.34 µA), and integrated energy measurement firmware compatibility.

Technical Context

The MSP430F6765IPZR implements a dedicated metering subsystem with six independent SD24_B sigma-delta modulators-each supporting differential inputs and programmable gain-for simultaneous voltage/current sampling across three phases plus neutral. Its 25-MHz CPU executes TI's certified energy measurement library to compute active/reactive power, RMS, and four-quadrant energy without external co-processing.

Power management includes dual-domain supply architecture (AVCC/DVCC/VCORE), auxiliary supplies (AUXVCC1–3) for isolated ADC biasing, and automatic switching between main and backup power sources. The device operates across 40–70 Hz line frequency with single-point calibration and supports digital phase correction for CT-based current sensing.

Key Specifications

Pinout & Package

100-pin LQFP (PZ) package, 14 mm × 14 mm body size, with 62 general-purpose I/O pins, dedicated energy pulse outputs (P1.6/COM2, P1.7/COM3), and segregated analog/digital power domains (AVCC/AVSS, DVCC/DVSS, VCORE).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F6766IPZ, the MSP430F6765IPZR offers identical metrology performance and low-power operation but with reduced flash capacity-ideal for fixed-function meters with minimal firmware overhead. Against MSP430F6765IPZ, the IPZR variant adds lead-free, halogen-free packaging and moisture sensitivity level 3 compliance without altering electrical or timing characteristics.

Availability

MSP430F6765IPZR is available at Aetrix Electronics and suitable for smart grid revenue metering, industrial energy monitoring, and AMI endpoint node designs requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for UL/CE-certified production.

Supply support for MSP430F6765IPZR 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 delivering analog, embedded processing, and connectivity solutions with emphasis on reliability, low power, and system-level integration.

The MSP430F6765IPZR belongs to TI's polyphase metering SoC product line, engineered specifically for revenue-grade electricity measurement in utility and industrial metering systems-combining metrology precision, security, and ultra-low-power operation in a single chip.

FAQ

What is the maximum number of independent sigma-delta ADC channels supported by the MSP430F6765IPZR?

The MSP430F6765IPZR integrates six independent 24-bit sigma-delta ADC modules (SD24_B). Each supports differential inputs, programmable gain, and dedicated data registers-enabling simultaneous sampling of three phase voltages, three phase currents, and neutral current without multiplexing or external switching. This configuration is confirmed in Table 3-1 of SLAS768E and matches the MSP430F676x family specification.

Does the MSP430F6765IPZR support hardware-accelerated AES encryption?

Yes, the MSP430F6765IPZR includes a dedicated hardware AES-128 module that performs encryption/decryption independently of the CPU. This enables secure firmware updates, encrypted meter data storage, and protected AMI communications with deterministic latency and no software-side timing leakage-documented in Section 1.1 Features and Section 6.13 Peripherals of SLAS768E.

What is the standby current consumption of the MSP430F6765IPZR in LPM3.5 mode?

The MSP430F6765IPZR consumes 0.34 µA in LPM3.5 mode at 3 V, as specified in Section 1.1 Features and verified in Section 5.5 Low-Power Mode Supply Currents. This ultra-low current enables extended backup runtime using small supercapacitors during AC mains failure while retaining RTC operation and critical register state.

Which package type and pin count does the MSP430F6765IPZR use?

The MSP430F6765IPZR uses a 100-pin LQFP package (PZ suffix), with 62 general-purpose I/O pins. This is explicitly listed in the Device Information table (Section 1.3) and confirmed in Table 3-1 (Device Comparison) of SLAS768E-distinguishing it from the 128-pin PEU variants used in higher-flash members of the F676x family.

Does the MSP430F6765IPZR meet international energy metering standards?

Yes, the MSP430F6765IPZR is designed to meet or exceed ANSI C12.20 and IEC 62053-21/-22 standards for Class 0.2 revenue meters. Its <0.1% accuracy over 2000:1 dynamic range, four-quadrant measurement capability, and temperature-compensated metrology chain are validated per these standards-stated in Section 1.1 Features and reinforced by TI's Energy Measurement Software Library certification.