Description
The Texas Instruments MSP430 family of ultra-low-power microcontrollers consists of several devices featuring different sets of peripherals targeted for various applications. The architecture, combined with extensive low-power modes, is optimized to achieve extended battery life in portable measurement applications. The device features a powerful 16-bit RISC CPU, 16-bit registers, and constant generators that contribute to maximum code efficiency. The digitally controlled oscillator (DCO) allows wake-up from low-power modes to active mode in 3 µs (typical). The MSP430F67xx series are microcontroller configurations with three high-performance 24-bit sigma-delta A/D converters, a 10-bit analog-to-digital (A/D) converter, four enhanced universal serial communication interfaces (three eUSCI_A and one eUSCI_B), four 16-bit timers, hardware multiplier, DMA, real-time clock module with alarm capabilities, LCD driver with integrated contrast control, auxiliary supply system, and up to 72 I/O pins in 100-pin devices and 52 I/O pins in 80-pin devices. Typical applications for these devices are 2-wire and 3-wire single-phase metering, including tamper-resistant meter implementations.
- Active Mode (AM):
All System Clocks Active
265 µA/MHz at 8 MHz, 3.0 V, Flash Program Execution (Typical)
140 µA/MHz at 8 MHz, 3.0 V, RAM Program Execution (Typical) - Standby Mode (LPM3):
Real-Time Clock With Crystal, Watchdog, and Supply Supervisor Operational, Full RAM Retention, Fast Wake-Up:
1.7 µA at 2.2 V, 2.5 µA at 3.0 V (Typical) - Off Mode (LPM4):
Full RAM Retention, Supply Supervisor Operational, Fast Wake-Up:
1.6 µA at 3.0 V (Typical) - Shutdown RTC Mode (LPM3.5):
Shutdown Mode, Active Real-Time Clock (RTC) With Crystal:
1.24 µA at 3.0 V (Typical) - Shutdown Mode (LPM4.5):
0.78 µA at 3.0 V (Typical)
- Fully Integrated LDO With Programmable Regulated Core Supply Voltage
- Supply Voltage Supervision, Monitoring, and Brownout
- System Operation From up to Two Auxiliary Power Supplies
- FLL Control Loop for Frequency Stabilization
- Low-Power Low-Frequency Internal Clock Source (VLO)
- Low-Frequency Trimmed Internal Reference Source (REFO)
- 32-kHz Crystals (XT1)
- eUSCI_A0, eUSCI_A1, and eUSCI_A2: Enhanced UART Supports Auto-Baudrate Detection, IrDA Encoder and Decoder, Synchronous SPI
- eUSCI_B0: I2C With Multi-Slave Addressing, Synchronous SPI
- 32-kHz Low-Frequency Oscillator (XT1)
- Real-Time Clock
- Backup Memory (4 x 16 Bits)
- Internal Reference
- Sample-and-Hold, Autoscan Feature
- Up to Six External Channels, Two Internal Channels, Including Temperature Sensor
