[原创] Freescale Kinetis K5x系列脉搏血氧仪开发方案

Freescale公司的Kinetis K5x系列MCU为设计人员提供包含集成运算的跨阻抗放大器和高分辨率模数转换器(ADC)和数模转换器(DAC)模块的模拟测量引擎.器件集成了高达512 KB闪存,提供IEEE®1588以太网和硬件加密,具有设备充电检测功能的全速USB 2.0 OTG以及一个灵活的低功率段式LCD控制器,主要用在医疗电子和工业应用.本文介绍了Kinetis K5x MCU系列主要特性,框图,以及MED-SPO2脉搏血氧仪开发套件框图,电路图和材料清单.

The Kinetis K5x MCU family is pin-, peripheral- and software-compatible with other Kinetis MCUs and provides designers with an analog measurement engine consisting of integrated operational and transimpedance amplifiers and high-resolution ADC and DAC modules.

The family also features IEEE® 1588 Ethernet and hardware encryption, full-speed USB 2.0 On-The-Go with device charger detect capability and a flexible low-power segment LCD controller with support for up to 320 segments. Devices start from 128 KB of flash in 64-pin LQFP packages extending up to 512 KB in a 144-pin MAPBGA package.

Kinetis K5x MCU系列主要特性:

• Operating Characteristics
– Voltage range: 1.71 to 3.6 V
– Flash write voltage range: 1.71 to 3.6 V
– Temperature range (ambient): -40 to 85℃
• Performance
– Up to 100 MHz ARM Cortex-M4 core with DSPinstructions delivering 1.25 Dhrystone MIPS perMHz..

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