擁有RX系列中的最高性能與最大存儲容量，並以單芯片實現控制及通信功能
全球領先的半導體解決方案供應商瑞薩電子株式會社（TSE：6723）宣佈推出RX微控制器（MCU）系列RX72M產品組，產品內置用於工業以太網通信的EtherCAT®從站控制器。瑞薩RX家族中的這一全新旗艦產品組為需要控制和通信功能的工業設備，如緊湊型工業機器人、可編程邏輯控制器、遠程I/O及工業網關等帶來具備大內存容量的高性能、單芯片解決方案。
EtherCAT在工業以太網中的應用正迅速增長，目前多采用專用MCU、IC，以及面向EtherCAT通信的高端系統級芯片（SoC）等器件。全新RX72M產品組性能優越，在240MHz主頻運行時，EEMBC®基準下的CoreMark評分高達1396（注1）；可同時實現應用處理和EtherCAT通信。該產品組將電機控制MCU與片上EtherCAT從站功能相結合，使工業應用開發人員能夠降低物料清單成本（BOM）並支持工業設備設計所需的小型化要求。
瑞薩電子工業自動化事業部副總裁傅田明表示，“電路板小型化對電路板板載空間的限制日益嚴苛，已成為工業機器人設計師面臨的一個關鍵問題，而RX72M產品組為這一挑戰帶來了革命性解決方案。作為全球領先的MCU供應商和工業網絡解決方案提供商，瑞薩很高興推出RX72M產品，分享我們豐富的嵌入式設計專業知識。與早期產品相比，該新產品將電路板面積減少約50%，同時保持高性能和對EtherCAT通信的支持，為客戶鋪就簡單靈活的工業設備設計之路。”
RX72M產品組是首款包含EtherCAT從站控制器的RX系列MCU，具有RX系列中最高的SRAM容量——1 MB SRAM及4 MB閃存。大容量SRAM允許MCU在不使用外部存儲的情況下高速運行多箇中間件系統，如TCP / IP、網頁服務器和文件系統。它還為支持未來的功能擴展帶來了靈活性，如無需額外存儲器即可支持OPC統一結構（OPC UA，注2）標準。片上閃存還可作為兩塊2MB的閃存獨立運行，從而使終端設備能夠穩定運行；如在一塊閃存中執行程序時，可同時在另一塊閃存中進行後臺重寫。
RX72M產品組的關鍵特性：
• RX系列MCU中首款集成EtherCAT從站控制器的產品
• 可支持工業以太網通信在240MHz運行時高達1396CoreMark評分的高性能，首款集成嵌入式雙精度浮點單元（FPU）的RX系列MCU
• 高速閃存系統，支持高達120 MHz速率，創造高性能和低可變性的運行環境
• 專用三角函數（sin、cos、arctan和hypot）加速器和寄存器組保存功能，實現高精度電機控制——即擁有與瑞薩RX72T電機控制MCU相同的功能
• 可靠的加密機制，如用於保護密鑰的硬件加密模塊和內存保護功能——可以防止應用程序系統在未經授權的情況下被複制，並支持對真實設備的身份驗證
• 靈活的封裝選擇，包括176引腳LQFP封裝和176引腳BGA封裝，以及RX系列MCU中首款224引腳BGA封裝，可為尺寸受限的設計節省額外的空間
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RX72T主要特性:
■ 32-bit RXv3 CPU core
Maximum operating frequency: 200 MHz
Capable of 1160 CoreMark in operation at 200 MHz
JTAG and FINE (one-line) debugging interfaces
A function for collectively saving the values of registers is available.
■ Low-power design and architecture
Operation from a single 2.7- to 5.5-V supply
Four low-power modes
■ On-chip code flash memory
Supports versions with 1 Mbytes/512 Kbytes
No wait cycles at up to 120 MHz or when the ROM cache is hit
User code is programmable by on-board or off-board programming.
■ On-chip data flash memory
32 Kbytes, reprogrammable up to 100,000 times
Programming/erasing as background operations (BGOs)
■ On-chip SRAM, no wait states
128Kbytes of SRAM (no wait states)
16 Kbytes of RAM with ECC (with wait)
■ Data transfer
DMACa: 8 channels
DTCa: 1 channel
■ ELC
Module operation can be initiated by event signals without usinginterrupts
Linked operation between modules is possible when the CPU is insleep mode
■ Reset and supply management
Power-on reset (POR)
Low voltage detection (LVDA) with voltage settings
■ Clock functions
Frequency of resonator for main clock oscillator: 8 to 24 MHz (thiscan be used as the PLL reference clock)
High-speed on-chip oscillator: 16 MHz/18 MHz/20 MHz (this canbe used as the PLL reference clock)
Low-speed on-chip oscillator: 240 kHz
■ Independent watchdog timer
120-kHz IWDT-dedicated on-chip oscillator clock operation
■ Useful functions for IEC60730 compliance
Oscillation-stoppage detection, functions for self-diagnosis anddetection of disconnection for the A/D converter, clock frequencyaccuracy measurement circuit, independent watchdog timer, RAMtest-assisting function by DOC, and CRCA,etc.
Register write protection function can protect values in importantregisters against overwriting.
■ External bus
Bus clock at 40 MHz (max)
Four CS areas
8- or 16-bit bus space is selectable per area
■ Various communications interfaces
Host/function or OTG controller (1 channel) with full-speed USB2.0 (USBb) transfer
CAN (compliant with ISO11898-1), incorporating 32 mailboxes(1 channel)
SCIj and SCIh with multiple functionalities (up to 6 channels)
Choose from among asynchronous mode, clock-synchronous mode,smart-card interface mode, simplified SPI, simplified I2C, andextended serial mode.
SCIi with 16-byte transmission and reception FIFOs (1 channel)
I2C bus interface (RIICa) for transfer at up to 400 kbps (fast mode),capable of SMBus operation (1 channel)
RSPId (1 channel) for transfer at up to 30 Mbps
■ Up to 31 extended-function timers
32-bit GPTW (10 channels): operation at 200 MHz, input capture,output compare, PWM waveforms: 10 output channels in singlephasecomplementary PWM mode/3 output channels in 3-phasecomplementary PWM mode/2 output channels in 5-phasecomplementary PWM mode, phase-counting mode, linkage withcomparator (counting operation, PWM negate control)
16-bit MTU3d (9 channels): operation at 200 MHz, input capture,output compare, PWM waveforms: 2 output channels in 3-phasecomplementary PWM mode, phase-counting mode
8-bit TMR (8 channels)
16-bit CMT (4 channels)
■ High-resolution PWM waveform generation circuit(HRPWM): 4 channels
Controlling the timing of rising or falling of the PWM outputwaveform for 32-bit GPTW is realized with minimum of 195 psresolution (in operation at 160 MHz)
■ 12-bit A/D converter (S12ADH):
total of 30 channels for three units
Up to three 12-bit units of sample-and-hold circuit included
Unit 0 (8 channels for 3 sample-and-hold circuits),
Unit 1 (8 channels for 3 sample-and-hold circuits),
Unit 2 (14 channels)
Programmable gain amplifier with pseudo differential amplification(3 channels × 2)
■ Analog Comparator (CMPC): 6 channels
■ 12-bit D/A converter: 2 channels
Usable as a reference voltage for the analog comparator
■ Temperature sensor for measuring temperaturewithin the chip
■ Encryption functions (Trusted Secure IP Lite)
128- or 256-bit key length of AES for ECB, CBC, GCM, others
True random number generator
Unauthorized access to the encryption engine is disabled andimposture and falsification of information are prevented
Safe management of keys
■ Up to 110 pins for general I/O ports
5-V tolerance, open drain, input pull-up, switchable driving ability
■ Recommended operating temp. range (Topr)
–40 C to +85 C
–40 C to +105 C
