Atmel ATSAM4LC2A低功耗32位ARM Cortex-M4 MCU开发方案

Atmel ATSAM4LC2A低功耗32位ARM Cortex－M4 MCU开发方案

关键字：工业控制,消费类电子,医疗电子

Atmel公司的ATSAM4LC2A是低功耗基于ARM Cortex-M4 RISC 处理器的32位闪存MCU,工作频率高达48MHz.采用最新的picoPower技术,具有超低功耗,工作电流消耗低至90μA/MHz, Thumb®-2指令集, 能够提供高效的信号处理,易用性和高速通信外设，是工业、医疗和消费品应用领域各种功耗敏感设计的理想之选。本文介绍了ATSAM4LC2A主要特性,框图,以及评估板ATSAM4L-EK主要特性,框图,电路图,材料清单和PCB元件布局图.

Atmel’s SAM4L series is a member of a family of Flash microcontrollers based on the high performance 32-bit ARM Cortex-M4 RISC processor running at frequencies up to 48MHz.

The SAM4L series embeds state-of-the-art picoPower technology for ultra-low power consumption. Combined power control techniques are used to bring active current consumption down to 90μA/MHz. The device allows a wide range of options between functionality and power consumption, giving the user the ability to reach the lowest possible power consumption with the feature set required for the application. The WAIT and RETENTION modes provide full logic and RAM retention, associated with fast wake-up capability (<1.5μs) and a very low consumption of, respectively, 3 μA and 1.5 μA. In addition, WAIT mode supports SleepWalking features. In BACKUP mode, CPU, peripherals and RAM are powered off and, while consuming less than 0.9μA with external interrupt wakeup supported.

The SAM4L series offers a wide range of peripherals such as segment LCD controller, embedded hardware capacitive touch (QTouch), USB device & embedded host, 128-bit AES and audio interfaces in addition to high speed serial peripherals such as USART, SPI and I2C. Additionally the Peripheral Event System and SleepWalking allows the peripherals to communicate directly with each other and make intelligent decisions and decide to wake-up the system on a qualified events on a peripheral level; such as I2C address match or and ADC threshold.

ATSAM4LC2A主要特性:

Core

– ARM® CortexTM-M4 running at up to 48MHz

– Memory Protection Unit (MPU)

– Thumb®-2 instruction set

picoPower® Technology for Ultra-low Power Consumption