描述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 five 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 internal oscillators allow wake-up from low-power modes to active mode in less than 5 µs. The MSP430C09x and MSP430L092 series are microcontroller configurations with two 16-bit timers, an ultra-low-voltage 8-bit analog-to-digital (A/D) converter, an8-bit digital-to-analog (D/A) converter, and up to 11 I/O pins. Typical applications for this device include single-cell systems requiring a full analog signal chain.特性 Ultra-Low Supply Voltage (ULV) Range 0.9 V to 1.5 V (1 MHz) 1.5 V to 1.65 V (4 MHz) Low Power Consumption Active Mode (AM): 45 µA/MHz (1.3 V) Standby Mode (LPM3, WDT_A Mode): 6 µA Off Mode (LPM4): 3 µA Wake-Up From LPMx in Less Than 5 µs 16-Bit RISC Architecture Extended Instructions Up to 4-MHz System Clock Compact Clock System 1-MHz Internal Trimmable High-Frequency Clock 20-kHz Internal Low-Frequency Clock Source External Clock Input 16-Bit Timer0_A3 With Three Capture/Compare Registers 16-Bit Timer1_A3 With Three Capture/Compare Registers ULV Analog Pool Modes 8-Bit Analog-to-Digital Converter (ADC) 8-Bit Digital-to-Analog Converter (DAC) Programmable Comparator (COMP) Supply Voltage Monitor (SVM) Temperature Sensor Internal Reference Voltage Source ULV Port Logic VOL Better Than 0.15 V at 2.5 mA VOH Better Than VCC – 0.15 V at 1 mA Timer0 PWM Signal Available on All Ports Timer1 PWM Signal Available on All Ports ULV Brownout Circuit (BOR) ULV RAM Retention Voltage Below BOR Level 32-Bit Watchdog Timer (WDT-A) Bootstrap Loader in MSP430L092 Development/Prototyping Device Full Four-Wire JTAG Debug Interface Family Members Include MSP430C091 1KB ROM Memory 128 Bytes RAM + 96 Bytes CRAM (Lockable) MSP430C092 2KB ROM Memory 128 Bytes RAM + 96 Bytes CRAM (Lockable) MSP430L092 2KB Loader ROM With Service Functions 2KB RAM (1792 + 128 + 96 Bytes Lockable) For Complete Module Descriptions, See the MSP430x09x Family User’s Guide (SLAU321)