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 oscillator (DCO) allows the device to wake up from low-power modes to active mode in less than 6 μs.The MSP430FW42x series are microcontroller configurations with two built-in 16-bit timers, a comparator, 96 LCD segment drive capability, a scan interface, and 48 I/O pins.Typical applications include sensor systems that capture analog signals, convert them to digital values, and process the data and transmit them to a host system. The comparator and timers make the configurations ideal for gas, heat, and water meters, industrial meters, counter applications, and hand-held meters.特性 Low Supply Voltage Range: 1.8 V to 3.6 V Ultra-Low-Power Consumption:Active Mode: 200 μA at 1 MHz, 2.2 VStandby Mode: 0.7 μAOff Mode (RAM Retention): 0.1 μAFive Power-Saving Modes Wake Up From Standby Mode in Less Than 6?μs Frequency-Locked Loop, FLL+ 16-Bit RISC Architecture, 125-ns Instruction Cycle Time Scan Interface for Background Water, Heat, and Gas Volume Measurement 16-Bit Timer_A With Three Capture/Compare Registers 16-Bit Timer_A With Five Capture/Compare Registers Integrated LCD Driver for Up to 96 Segments On-Chip Comparator Serial Onboard Programming, No External Programming Voltage Needed Programmable Code Protection by Security Fuse Brownout Detector Supply Voltage Supervisor and Monitor With Programmable Level Detection Bootstrap Loader (BSL) in Flash Devices Family Members Include:MSP430FW423 8KB + 256B Flash Memory, 256B?RAMMSP430FW425 16KB + 256B Flash Memory, 512B?RAMMSP430FW427 32KB + 256B Flash Memory, 1KB?RAM MSP430FW428 48KB + 256B Flash Memory, 2KB?RAM MSP430FW429 60KB + 256B Flash Memory, 2KB?RAMAvailable in 64-Pin Quad Flat Pack (QFP) For Complete Module Descriptions, See the , Literature Number SLAU056