Renesas公司的RX23T系统是内置浮点处理单位(FPU)的32位RX微控制器(mcu),工作频率40MHz,65.6DMIPS,集成了12位ADC和40MHz PWM,很容易对复杂的逆变器控制算法举行编程,从而大大地低落软件开辟的人工本钱和维护费用.单电源2.7-V到 5.5-V工作,主要用在通用和消费类电子设备.本文先容了RX23T系列主要特点,框架图和接纳RX23T的24V马达控制评估系统主要特点和套件指标,评估系统框架图,电路图,质料清单和PCB设计原理图.
The RX23T Group is 32-bit microcontroller and suited for single inverter control and has a built-in FPU (floating-point processing unit) that enables it to easily program complex inverter control algorithms. This helps to greatly reduce the man-hours required for software development and maintenance. Furthermore, thanks to the RX200 core the current consumed in software standby mode (with RAM retention) is a mere 0.45 μA. RX23T microcontrollers operate in a broad voltage range from 2.7 V to 5.5 V, which is useful for inverter control, and are highly compatible with the RX62T Group at the pin arrangement and software level.
RX23T系列主要特点:
■ 32-bit RX CPU core
Max.operating frequency: 40 MHzCapable of 65.6 DMIPS in operation at 40 MHz
Enhanced DSP: 32-bit multiply-accumulate and 16-bitmultiply-subtract instructions supported
Built-in FPU: 32-bit single-precision floating point(compliant to IEEE754)
Divider (fastest instruction execution takes two CPU clockcycles)
Fast interrupt
CISC Harvard architecture with 5-stage pipeline
Variable-length instructions, ultra-compact code
On-chip debugging circuit
Memory protection unit (MPU) supported
■ Low power design and architecture
Operation from a single 2.7-V to 5.5-V supply
Three low power consumption modes
■ On-chip code flash memory, no wait states
128-/64-Kbyte capacities
On-board or off-board user programming
■ On-chip SRAM, no wait states
12 Kbytes of SRAM
■ DMA
DTC: Four transfer modes
■ Reset and supply management
Seven types of reset, including the power-on reset (POR)
Low voltage detection (LVD) with voltage settings
■ Clock functions
Main clock oscillator frequency: 1 to 20 MHz
External clock input frequency: Up to 20 MHz
PLL circuit input: 4 MHz to 12.5 MHz
On-chip low-speed oscillator, on-chip high-speedoscillator, dedicated on-chip oscillator for the IWDT
Clock frequency accuracy measurement circuit(CAC)
■ Independent watchdog timer
15-kHz on-chip oscillator produces a dedicated clocksignal to drive IWDT operation.
■ Useful functions for IEC60730 compliance
Self-diagnostic and disconnection-detection assistancefunctions for the A/D converter, clock frequency accuracymeasurement circuit, independent watchdog timer, RAMtest assistance functions using the DOC, etc.
■ MPC
Multiple locations are selectable for I/O pins of peripheralFunctions
■ Up to 4 communications channels
SCI with many useful functions (2 channels)Asynchronous mode, clock synchronous mode, smart cardinterface mode, simplified SPI, simplified I2C, andextended serial mode.
I2C bus interface: Transfer at up to 400 kbps (one channel)
RSPI capable of high speed connection (one channel)
■ Up to 12 extended-function timers
16-bit MTU3: 40MHz operation, input capture, outputcompare, three-phase complementary PWM output, CPUefficientcomplementary PWM, phase counting mode (sixchannels)
8-bit TMRs (4 channels),
16-bit compare-match timers (4 channels)
■ 12-bit A/D converter: 10ch
On-chip sample-and-hold circuit: 12bit × up to 3 channels
Sampling time can be set for each channel
Self-diagnostic function and analog input disconnectiondetection assistance function (compliant to IEC60730)
ADC: three sample-and-hold circuits, double dataregisters, comparator (3 channels)
■ Register write protection function can protectvalues in important registers againstoverwriting.
■ Up to 50 pins for general I/O ports
5-V tolerant, open drain, input pull-up
■ Operating temperature range
40 to +85 C
40 to +105 C
RX23T应用:
General industrial and consumer equipment
图1.RX23T系列框架图(1)
图2.RX23T系列框架图(2)
接纳RX23T的24V马达控制评估系统
Due to rising concerns about global warming issues and demands to reduce power costs, power consumption reduction requirements (energy-saving requirements) for electronic equipment and devices are becoming more severe. It is said that power consumption by motors in home appliances makes up over half of the total power consumption of a common household. Thus, it can be said that reducing motor power consumption is the key to saving energy.
There are various methods of controlling a motor. Among them, the best control method for reducing power consumption is inverter control. Although inverter control demonstrates a tremendous ability to achieve energy savings, there are more than a few challenges associated with its implementation. The difficulty of carrying out the inverter control itself, the complicated hardware, and high cost are the typical challenges. Renesas has developed and provides solutions that help overcome such challenges.
The 24V Motor Control Evaluation System for RX23T comes with a low-voltage permanent magnet synchronous motor (24V, 0.42A brushless DC motor) that makes it easy to start evaluating motor control. The preprogrammed sensorless vector control program allows you to run the motor immediately out of the box. You can evaluate different microcontrollers or algorithms by using optional CPU cards or downloading and installing sample code.
The motor control board of the product consists of two parts: an inverter board and a CPU card. Each product version is equipped with a CPU card on which the designated microcontroller model is mounted.
图3.24V马达控制评估系统外形图
24V马达控制评估系统主要特点:
1. Supports the RX23T motor control microcontroller.
2. Supports permanent magnet synchronous motors.
3. Supports three-shunt current detection.
4. Equipped with USB mini-B connector for Motor RSSK Support Tool communication.
5. Overcurrent protection function using overcurrent detection circuit.
接纳RX23T的24V马达控制评估系统指标(1):套件板指标
接纳RX23T的24V马达控制评估系统指标(2):24V逆变器板指标
接纳RX23T的24V马达控制评估系统指标(3):RX23T CPU卡指标
图4.24V马达控制评估系统框架图
图5.马达控制评估系统框架图
图6.24V马达控制评估系统电路图(1)
图7.24V马达控制评估系统电路图(2)
图8.24V马达控制评估系统电路图(3)
图9.24V马达控制评估系统电路图(4)
图10.24V马达控制评估系统电路图(5)
图11.24V马达控制评估系统电路图(6)
24V马达控制评估系统质料清单(BOM):
图12.24V马达控制评估系统PCB设计原理图(1)
图13.24V马达控制评估系统PCB设计原理图(2)
图14.24V马达控制评估系统PCB设计原理图(3)
图15.24V马达控制评估系统PCB设计原理图(4)
图16.24V马达控制评估系统PCB设计原理图(5)
图17.24V马达控制评估系统PCB设计原理图(6)
图18.24V马达控制评估系统PCB设计原理图(7)
详情请复制打开此衔接地址:
http://documentation.renesas.com/doc/products/mpumcu/doc/rx_family/r01ds0248ej0110_rx23t.pdf
和http://documentation.renesas.com/doc/products/mpumcu/rx200/r20ut3697ej0100_motor.pdf
以及http://documentation.renesas.com/doc/products/mpumcu/rx200/r12tu0011ej0100_motor.pdf
与http://documentation.renesas.com/doc/products/mpumcu/rx200/r12tu0001ej0100_motor.pdf
和http://documentation.renesas.com/doc/products/mpumcu/rx200/r12tu0005ej0100_motor.pdf
r01ds0248ej0110_rx23t.pdf
r12tu0001ej0100_motor.pdf
r12tu0005ej0100_motor.pdf
r12tu0011ej0100_motor.pdf
r20ut3320eg0100_rskrx23t_qsg.pdf
r20ut3697ej0100_motor.pdf
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