Overview
The Texas Instruments MSP430F6726IPN is a member of the MSP430 family of ultra-low-power microcontrollers. This device is specifically designed for single-phase metering applications and features a robust set of peripherals optimized for extended battery life in portable measurement applications. The MSP430F6726IPN is powered by a 16-bit RISC CPU, 16-bit registers, and constant generators, which contribute to maximum code efficiency. The device's architecture, combined with extensive low-power modes, allows it to wake up from low-power modes to active mode in just 3 µs (typical).
Key Specifications
| Specification | Details |
|---|---|
| Package Type | LQFP (PN) with 80 pins |
| Supply Voltage Range | 3.6 V down to 1.8 V |
| Flash Memory | 128 KB |
| RAM | 8 KB |
| System Clock | Up to 25 MHz |
| ADCs | Three 24-bit sigma-delta ADCs, one 10-bit ADC |
| Timers | One 16-bit timer with three capture/compare registers, three 16-bit timers with two capture/compare registers each |
| Serial Communication Interfaces | Four enhanced universal serial communication interfaces (three eUSCI_A modules and one eUSCI_B module) |
| RTC | Password-protected RTC with crystal offset calibration and temperature compensation |
| Power Consumption (Active Mode) | 265 µA/MHz at 8 MHz, 3.0 V (Flash), 140 µA/MHz at 8 MHz, 3.0 V (RAM) |
| Power Consumption (Standby Mode - LPM3) | 1.7 µA at 2.2 V, 2.5 µA at 3.0 V |
| Power Consumption (Off Mode - LPM4) | 1.6 µA at 3.0 V |
| Power Consumption (Shutdown RTC Mode - LPM3.5) | 1.24 µA at 3.0 V |
| Power Consumption (Shutdown Mode - LPM4.5) | 0.78 µA at 3.0 V |
Key Features
- Ultra-low power consumption with various low-power modes (LPM3, LPM4, LPM3.5, LPM4.5)
- 16-bit RISC CPU with up to 25-MHz system clock
- Flexible power management system with fully integrated LDO and programmable regulated core supply voltage
- Supply voltage supervision, monitoring, and brownout detection
- System operation from up to two auxiliary power supplies
- Unified clock system with FLL control loop for frequency stabilization
- Low-power low-frequency internal clock source (VLO) and low-frequency trimmed internal reference source (REFO)
- 32-kHz crystals (XT1) and real-time clock with backup memory
- Integrated LCD driver with contrast control for up to 320 segments in 8-Mux mode
- Hardware multiplier supporting 32-bit operations
- Three 24-bit sigma-delta ADCs and one 10-bit ADC with internal reference and sample-and-hold feature
- Four enhanced universal serial communication interfaces (eUSCI_A and eUSCI_B)
- Serial onboard programming without external programming voltage
- Three-channel internal DMA and password-protected RTC with crystal offset calibration and temperature compensation
Applications
The MSP430F6726IPN is primarily designed for single-phase metering applications, such as electronic watt-hour meters. Its features also make it suitable for other portable measurement applications where low power consumption and high precision are critical. Additional applications include:
- Energy measurement and monitoring systems
- Smart metering solutions
- Portable medical devices
- Industrial automation and control systems
- Low-power IoT devices
Q & A
- What is the supply voltage range of the MSP430F6726IPN?
The supply voltage range is from 3.6 V down to 1.8 V.
- How much power does the MSP430F6726IPN consume in active mode?
In active mode, the device consumes 265 µA/MHz at 8 MHz, 3.0 V (Flash) and 140 µA/MHz at 8 MHz, 3.0 V (RAM).
- What are the key ADC features of the MSP430F6726IPN?
The device features three 24-bit sigma-delta ADCs and one 10-bit ADC with internal reference and sample-and-hold feature.
- Does the MSP430F6726IPN support serial communication interfaces?
Yes, it supports four enhanced universal serial communication interfaces (three eUSCI_A modules and one eUSCI_B module).
- What is the purpose of the integrated LCD driver?
The integrated LCD driver provides contrast control for up to 320 segments in 8-Mux mode.
- How does the device manage power consumption in low-power modes?
The device has various low-power modes (LPM3, LPM4, LPM3.5, LPM4.5) with very low power consumption, such as 1.7 µA in LPM3 and 0.78 µA in LPM4.5.
- What is the role of the real-time clock (RTC) in the MSP430F6726IPN?
The RTC is password-protected with crystal offset calibration and temperature compensation, and it includes a backup memory and a separate voltage supply for the backup subsystem.
- Can the MSP430F6726IPN be programmed onboard without an external programming voltage?
Yes, the device supports serial onboard programming without an external programming voltage.
- What types of timers are available on the MSP430F6726IPN?
The device features one 16-bit timer with three capture/compare registers and three 16-bit timers with two capture/compare registers each.
- How many I/O pins are available on the 80-pin package of the MSP430F6726IPN?
The 80-pin package of the MSP430F6726IPN provides up to 52 I/O pins.
- What is the significance of the hardware multiplier in the MSP430F6726IPN?
The hardware multiplier supports 32-bit operations, enhancing the device's computational capabilities.
