Texas Instruments MSP430F4784IPZR

Overview

MSP430F4784IPZR from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller designed for single-phase electricity metering. It integrates four 16-bit sigma-delta ADCs with differential PGA inputs, 48KB+256B flash, 2KB RAM, dual 16-bit timers (Timer_A3 and Timer_B3), four USCI modules (dual UART/IrDA/SPI + dual I²C/SPI), and an integrated 160-segment LCD driver with contrast control. It operates from 1.8 V to 3.6 V and supports wake-up from standby in under 6 μs.

For engineers reviewing the MSP430F4784IPZR datasheet, MSP430F4784IPZR pinout, MSP430F4784IPZR application, or MSP430F4784IPZR equivalent, this page delivers verified technical context, validated pin functions, confirmed metering-specific peripherals, and real-world substitution guidance - all grounded in TI's SLAS545C datasheet and SLAU056 user guide.

Technical Context

The MSP430F4784IPZR implements a 16-bit RISC CPU with constant generators and 16 general-purpose registers, enabling single-cycle instruction execution at up to 16 MHz. Its FLL+ clock system synchronizes MCLK, SMCLK, and ACLK using either a 32.768-kHz watch crystal (XT1), 16-MHz high-frequency crystal (XT2), or internal DCO - with DCO stabilization in <6 μs.

It features four independent SD16_A sigma-delta ADC modules (A0–A3), each with differential inputs, programmable gain, and dedicated analog input pins (e.g., A3.0+/A3.0−). All four ADCs are active and functional in the MSP430F4784IPZR variant, distinguishing it from the 3-ADC F47x3 family members.

Key Specifications

Pinout & Package

Package: 100-pin plastic quad flatpack (PZ), RoHS-compliant, rated for −40°C to +85°C operation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultra-low-power metrology microcontroller applications.

Compared with MSP430F4784IPZR, the MSP430F4794IPZR offers expanded memory for complex protocols without changing PCB layout, while the MSP430F6736AIPZR introduces 24-bit metrology-grade ADCs and hardware encryption - making it suitable for Tier-1 utility deployments where accuracy and security are mandated.

Availability

MSP430F4784IPZR is available at Aetrix Electronics and suitable for smart meter design, energy gateway development, and portable power analyzer manufacturing requiring stable component supply across long product lifecycles.

Supply support for MSP430F4784IPZR 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 power management technologies with over 50 years of innovation in industrial and energy infrastructure solutions.

The MSP430F47xx product line was engineered specifically for single-phase electricity metering applications, integrating metrology-optimized ADCs, LCD drivers, and ultra-low-power operation to meet IEC 62053 standards and utility certification requirements.

FAQ

What is the maximum sampling rate supported by the MSP430F4784IPZR's sigma-delta ADCs?

The MSP430F4784IPZR's four SD16_A sigma-delta ADCs support up to 128 kSPS aggregate throughput across all channels. Each ADC operates independently with configurable conversion times; typical effective sampling rates range from 1 kSPS to 16 kSPS per channel depending on resolution setting and PGA gain. This enables simultaneous 4-kHz waveform capture on all four inputs - sufficient for Class 0.5 metering per IEC 62053-22.

Does the MSP430F4784IPZR support hardware-based AES encryption?

No, the MSP430F4784IPZR does not include a hardware AES engine. It relies on software-based cryptographic libraries for secure boot or communication. For hardware-accelerated AES-128, consider the newer MSP430F6736AIPZR or MSP430FR6989IPZR. The MSP430F4784IPZR provides secure code protection via its programmable security fuse and BSL password lock, but encryption operations must be implemented in firmware.

Can the MSP430F4784IPZR drive a 4-mux LCD display with 160 segments?

Yes, the MSP430F4784IPZR's integrated LCD_A module fully supports 160-segment displays with 1:3 or 1:4 multiplexing. It provides four COM outputs (COM0–COM3) and 40 SEG outputs (S0–S39), enabling direct drive of 4×40 = 160 segments. Contrast is adjustable via internal resistor ladder or external capacitor (LCDCAP pin), and bias voltage generation is handled on-chip - eliminating external LCD bias ICs.

What debug interfaces are available on the MSP430F4784IPZR?

The MSP430F4784IPZR supports full IEEE 1149.1 JTAG debugging via dedicated TCK/TMS/TDO/TDI pins (pins 93/92/90/91), plus Spy-Bi-Wire (2-wire JTAG) compatibility. It also includes an onboard Emulation Module (EEM) for real-time breakpoints and trace. Development tools such as MSP-FET430UIF and MSP-FET430U100 are fully compatible. No SWD or ARM-style debug is supported.

Is the A3.0+/A3.0− ADC channel functional on the MSP430F4784IPZR?

Yes, the A3.0+/A3.0− analog input pair is fully functional and dedicated to the fourth sigma-delta ADC channel on the MSP430F4784IPZR. This distinguishes it from the MSP430F4783IPZR (F47x3 family), where A3.0+/A3.0− are unconnected. Pin assignments are confirmed in the SLAS545C datasheet: A3.0+ is pin 96 and A3.0− is pin 97 of the PZ package.