MSP430F643x说明书

FEATURES 2• Low Supply Voltage Range: 1.8 V to 3.6 V • Two Universal Serial Communication • Ultralow Power Consumption Interfaces – Active Mode (AM): – USCI_A0 and USCI_A1 Each Supporting All System Clocks Active: – Enhanced UART Supporting 270 μA/MHz at 8 MHz, 3.0 V, Flash Program Auto-Baudrate Detection Execution (Typical) – IrDA Encoder and Decoder – Standby Mode (LPM3): – Synchronous SPI Watchdog With Crystal, and Supply – USCI_B0 and USCI_B1 Each Supporting Supervisor Operational, Full RAM – I2CTM Retention, Fast Wake-Up: 1.8 μA at 2.2 V, 2.1 μA at 3.0 V (Typical) – Synchronous SPI – Shutdown RTC Mode (LPM3.5): • Integrated 3.3-V Power System Shutdown Mode, Active Real-Time Clock • 12-Bit Analog-to-Digital (A/D) Converter With With Crystal: Internal Shared Reference, Sample-and-Hold, 1.1 μA at 3.0 V (Typical) and Autoscan Feature – Shutdown Mode (LPM4.5): • Dual 12-Bit Digital-to-Analog (D/A) Converters 0.3 μA at 3.0 V (Typical)