Freescale公司的Kinetis K70是具有浮点单元,图像LCD, IEEE. 1588以太网MAC,全速和高速USB 2.0 OTG,加密和篡改检测的低功耗32位MCU,采用ARM.CortexTM-M4内核,支持DSP指令,集成了512KB或1MB闪存,主要用在汽车电子,导航,消费电子,家用电器, 工厂自动化,建筑物控制,可编逻辑控制(PLC),智能电网和电表,POS终端等.本文介绍了Kinetis K70器件主要特性, 方框图以及Kinetis K70 MCU模块TWR-K70F120M主要特性,方框图和电路图.
K70: Low-Power MCU with Floating Point Unit, Graphic LCD, Ethernet, USB, Encryption and Tamper Detect
Kinetis is the most scalable portfolio of low power, mixedsignal ARM.CortexTM-M4 MCUs in the industry. Phase 1 of the portfolio consists of five MCU families with over 200 pin-,peripheral- and software-compatible devices. Each family offers excellent performance, memory and feature scalability with common peripherals, memory maps, and packages providing easy migration both within and between families.
Kinetis MCUs are built from Freescale’s innovative 90nm Thin Film Storage (TFS) flash technology with unique FlexMemory. Kinetis MCU families combine the latest lowpower innovations and high performance, high precision mixed-signal capability with a broad range of connectivity, human-machine interface, and safety & security peripherals.Kinetis MCUs are supported by a market-leading enablement bundle from Freescale and numerous ARM 3rd party ecosystem partners.
The K70 MCU family includes an integrated graphic LCD controller, IEEE. 1588 Ethernet MAC, full- and high-speed USB 2.0 On-The-Go with device charger detect capability, hardware encryption and tamper detection capabilities. The K70 is available with 512 KB or 1 MB of flash memory in 196- and 256-pin MAPBGA packages. Each MCU includes a rich suite of analog, communication, timing and control peripherals. All K70 family devices include a single precision floating point unit and NAND flash controller. 256-pin versions include an on-chip DRAM controller for system expansion.
All Kinetis families include a powerful array of analog, communication and timing and control peripherals with the level of feature integration increasing with flash memory size and the number of inputs/outputs. Features common to all Kinetis families include:
·ARM Cortex-M4 Core delivering 1.25 DMIPS/MHz with DSP instructions (floating-point unit available on certain Kinetis families)
·Up to 32-channel DMA for peripheral and memory servicing with minimal CPU intervention
·Broad range of performance levels rated at maximum CPU frequencies of 50 MHz, 72 MHz, 100 MHz, 120 MHz, and 150 MHz
·10 low power operating modes for optimizing peripheral activity and wake-up times for extended battery life.
·Low–leakage wake-up unit, low power timer, and low power RTC for additional low power flexibility
·Industry-leading fast wake-up times
·Scalable memory footprints from 32 KB flash / 8 KB RAM to 1 MB flash / 128 KB RAM. Independent flash banks enable concurrent code execution and firmware updates
·Optional 16 KB cache memory for optimizing bus bandwidth and flash execution performance. Offered on K10, K20, and K60 family devices with CPU performance of up to 150 MHz.
·FlexMemory with up to 512 KB FlexNVM and up to 16 KB FlexRAM. FlexNVM can be partitioned to support additional program flash memory (ex. bootloader), data flash (ex. storage for large tables), or EEPROM backup.FlexRAM supports EEPROM byte-write/byte-erase operations and dictates the maximum EEPROM size.
·EEPROM endurance capable of exceeding 10 million cycles
·EEPROM erase/write times an order of magnitude faster than traditional EEPROM
Programmable Logic Control (PLC)
Electronic Point-of-Sales (ePOS) Terminals
Smart Grid and Smart Metering
TWR-K70F120M: Kinetis K70 MCU模块
The TWR-K70F120M is a Tower Controller Module compatible with the Freescale Tower System. It can function as a stand-alone, low-cost platform for the evaluation of the Kinetis K10, K20, K6x, and K70 family of microcontroller (MCU) devices. The TWR-K70F120M features the Kinetis K70 low-power microcontroller based on the ARM® CortexTM-M4 architecture with graphical LCD controller, tamper detection, USB 2.0 HS Controller, USB 2.0 full-speed OTG controller and 10/100 Mbps Ethernet MAC.
The TWR-K70F120M is available as a stand-alone product or as a kit (TWR-K70F120M-KIT) with the Tower Elevator Modules (TWR-ELEV) and the Tower Serial Module (TWR-SER). The TWR-K70F120M can also be combined with other Freescale Tower peripheral modules to create development platforms for a wide variety of applications. 0 provides an overview of the Freescale Tower System.
The TWR-K70F120M contents include:
TWR-K70F120M board assembly
3ft USB cable
Interactive DVD with software installers and documentation
Quick Start Guide
TWR-K70F120M Tower MCU模块主要特性:
The following list summarizes the features of the TWR-K70F120M Tower MCU Module:
Tower compatible microcontroller module
MK70FN1M0VMJ12: K70FN1M in a 256 MAPBGA with 120 MHz operation
Touch Tower Plug-in Socket
General purpose Tower Plug-in (TWRPI) socket
On-board JTAG debug circuit (OSJTAG) with virtual serial port
1Gb of DDR2 SDRAM memory
2Gb of SLC NAND flash memory
Three axis accelerometer (MMA8451Q)
Four (4) user-controllable LEDs
Four (4) capacitive touch pads
Two (2) user pushbutton switches
Battery Holder for 20mm lithium battery (e.g. 2032, 2025)
Micro-SD Card slot