基于CC430設計的超低功耗MCU射頻應用方案

CC430系列是TI公司的集成了RF收發(fā)器的超低功耗MCU系統(tǒng)級芯片(SoC),器件具有功能強大的MSP430? 16位RISC CPU,16位居寄存器,以及常數(shù)發(fā)生器,以得到最高的代碼效率.工作電壓1.8V-3.6V,CPU工作時的功耗160 μA/MHz,主要用在建筑物自動化,測試測量和財產跟蹤.本文介紹CC430主要特性, CC430F613x和CC430F513x的功能方框圖, 小于1GHz無線電方框圖,以及CC430F61xx和CC430F51xx的典型應用電路圖與材料清單.

The Texas Instruments CC430 family of ultralow-power microcontroller system-on-chip with integrated RF transceiver cores consists of several devices featuring different sets of peripherals targeted for a wide range of applications. The architecture, combined with five low-power modes is optimized to achieve extended battery life in portable measurement applications. The device features the powerful MSP430? 16-bit RISC CPU, 16-bit registers, and constant generators that contribute to maximum code efficiency.

The CC430 family provides a tight integration between the microcontroller core, its peripherals, software, and the RF transceiver, making these true system-on-chip solutions easy to use as well as improving performance.

CC430主要特性:

True System-on-Chip (SoC) for Low-Power Wireless Communication Applications

Wide Supply Voltage Range: 1.8 V to 3.6 V

Ultralow Power Consumption:

CPU Active Mode (AM): 160 μA/MHz

Standby Mode (LPM3 RTC Mode):2.0 μA

Off Mode (LPM4 RAM Retention): 1.0 μA

Radio in RX: 15 mA, 250kbps, 915MHz

MSP430 System and Peripherals

16-Bit RISC Architecture, Extended Memory, 50-ns Instruction Cycle Time

Wake-Up From Standby Mode in Less Than6 μs

Flexible Power Management System with SVS and Brownout

Unified Clock System with FLL

16-Bit Timer TA0, Timer_A with Five Capture/Compare Registers

16-Bit Timer TA1, Timer_A with Three Capture/Compare Registers

Hardware Real-Time Clock

Two Universal Serial Communication Interfaces

USCI_A0 supporting UART, IrDA, SPI

USCI_B0 supporting I²C, SPI

12-Bit A/D Converter With Internal Reference, Sample-and-Hold, and Autoscan Features (Only CC430F613x and CC430F513x) Comparator

The CC430 has one active mode and five software selectable low-power modes of operation. An interrupt event can wake up the device from any of the low-power modes, service the request, and restore back to the low-power mode on return from the interrupt program.

The following six operating modes can be configured by software:

? Active mode (AM)

– All clocks are active

? Low-power mode 0 (LPM0)

– CPU is disabled

– ACLK and SMCLK remain active, MCLK is disabled

– FLL loop control remains active

? Low-power mode 1 (LPM1)

– CPU is disabled

– FLL loop control is disabled

– ACLK and SMCLK remain active, MCLK is disabled

? Low-power mode 2 (LPM2)

– CPU is disabled

– MCLK and FLL loop control and DCOCLK are disabled

– DCO’s dc-generator remains enabled

– ACLK remains active

? Low-power mode 3 (LPM3)

– CPU is disabled

– MCLK, FLL loop control, and DCOCLK are disabled

– DCO’s dc-generator is disabled

– ACLK remains active

? Low-power mode 4 (LPM4)

– CPU is disabled

– ACLK is disabled

– MCLK, FLL loop control, and DCOCLK are disabled

– DCO’s dc-generator is disabled

– Crystal oscillator is stopped

– Complete data retention

圖1.CC430F613x功能方框圖

圖2. CC430F612x功能方框圖

圖3. CC430F513x功能方框圖

圖4. 小于1GHz無線電方框圖

圖5. CC430F61xx典型應用電路圖

圖6. CC430F51xx典型應用電路圖

應用電路圖材料清單: