Freescale TWR-K40X256 Tower系统开发评估方案
Freescale公司的TWR-K40X256采用基于ARM® Cortex™-M4架构的Kinetis K40低功耗MCU,集成了USB 2.0全速OTG和LCD显示控制器,包括有256KB程序闪存和256KB FlexMemory非易失存储器,以及模拟,通信,时序和控制接口,主要用在血糖仪,GPS接收器, 点钞机和自行车码表.本文介绍了K40 MCU系列主要特性,方框图, TWR-K40X256 Tower控制器模块主要特性, 方框图和详细电路图.
The K40 MCU family is pin, peripheral and software compatible with the K10 MCU family and adds full-speed USB 2.0 On-The-Go with device charge detect capability and a flexible low-power segment LCD controller with support for up to 320 segments. Devices start from 64 KB of flash in 64QFN packages extending up to 512 KB in a 144MAPBGA package with a rich suite of analog, communication, timing and control peripherals.
K40 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 105℃
•Performance
– Up to 100 MHz ARM Cortex-M4 core with DSP instructions delivering 1.25 Dhrystone MIPS per MHz
•Memories and memory interfaces
– Up to 512 KB program flash memory on non-FlexMemory devices
– Up to 128 KB RAM
– Serial programming interface (EzPort)
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