Renesas公司的RX63N是100MHz 32位RX MCU ,165DMIPS性能,集成了多达2MB闪存,以太网MAC,全速USB 2.0主/功能/OTG接口,包括CAN的各种通信接口,10位和12位ADC和RTC.和现有产品相比,待机功耗降低大约90%,工作电压2.7- 3.6V,主要用在音频设备,马达控制,游戏机和通信设备.本文介绍了RX63N主要特性,方框图,RX63N开发套件应用和特性,方框图,电路图和材料清单.
The RX63N/RX631 Group incorporates communication functions suitable for networking equipment, such as Ethernet controller, USB 2.0 full-speed (function, host, or OTG selectable), and CAN. In addition, with a RTC (Real-Time Clock) that can operate on a dedicated power supply as a low power feature, standby power consumption can be reduced by approximately 90% compared to existing products. The selection of on-chip memory has been expanded from ROMless to 2 MB, and even smaller-sized packages are available. This makes possible mounting in anything from large-scale systems to small-scale/small-space devices.
RX63N主要特性:
32-bit RX CPU core
Max. operating frequency: 100 MHz
Capable of 165 DMIPS in operation at 100 MHz
Single precision 32-bit IEEE-754 floating point
Two types of multiply-and-accumulation unit (between memories and between registers)
32-bit multiplier (fastest instruction execution takes one CPU clock cycle)
Divider (fastest instructio贴片电感器工厂n execution takes two CPU clock cycles)
Fast interrupt
CISC Harvard architecture with 5-stage pipeline
Variable-length instructions: Ultra-compact code
Supports the memory protection unit (MPU)
JTAG and FINE (two-line) debugging interfaces
Low-power design and architecture
Operation from a single 2.7- to 3.6-V supply
Low power consumption: A product that supports all peripheral functions draws only 500uA/MHz.
RTC is capable of operation from a dedicated power supply (min. Operating voltage: 2 V).
Four low-power modes
On-chip main flash memory, no wait states
Supports ROM-less versions and versions with up to 2 Mbytes of ROM (ROM-less version: RX631 Group only)
100-MHz operation, 10-ns read cycle (no wait states)
384-Kbyte to 2-Mbyte capacities
User code programmable via the USB, SCI, or JTAG
On-chip data flash memory
ROM-less or 32 Kbytes of ROM (reprogrammable up to 100,000 times)
Programming/erasing as background operations (BGOs)
On-chip SRAM, no wait states
32- to 128-Kbyte capacities
For instructions and operands
Can provide backup on deep software standby
DMA
DMAC: Four channels
DTC
EXDMAC: Two channels
Dedicated DMAC for the Ethernet controller: Single channel
Reset and supply management
Power-on reset (POR)
Low voltage detection (LVD) with voltage settings
Clock functions
External crystal oscillator or internal PLL for operation at 4电感线圈厂 to 16 MHz
Internal 125-kHz LOCO and 50-MHz HOCO
Dedicated 125-kHz LOCO for the IWDT
Real-time clock
Adjustment functions (30 seconds, leap year, and error)
Time capture function (for capturing times in response to event-signal input on external pins)
Independent watchdog timer
125-kHz LOCO clock operation
Useful functions for IEC60730 compliance
Oscillation-stoppage detection, frequency measurement, CRC, IWDT, selfdiagnostic function for the A/D converter, etc.
Various communications interfaces
Ethernet MAC (1) (not in RX631 Group products)
Host/function or OTG controller (1) and function controller (1) with fullspeed USB 2.0 transfer
CAN (compliant with ISO11898-1), incorporating 32 mailboxes (up to 3 modules)
SCI with multiple functionalities (up to 13)
Choose from among asynchronous mode, clock-synchronous mode, smartcard interface mode, simplified SPI, simplified I2C, and extended serial mode.
I2C bus interface for transfer at up to 1 Mbps (up to 4)
RSPI for high-speed transfer (up to 3)
External address space
Buses for high-speed data transfer (max. operating frequency of 50 MHz)
8 CS areas (8 ⊙ 16 Mbytes)
Multiplexed address data or separate address lines are selectable per area.
8-, 16-, or 32-bit bus space is selectable per area
Independent SDRAM area (128 Mbytes)
Up to 20 extended-function timers
16-bit MTU2: input capture, output compare, PWM waveform output, phase-counting mode (6 channels)
16-bit TPU: input capture, output compare, phase-counting mode (12 channels)
USB海量存储类设备功能在ARM系统中的应用 技术发展到今天的信息时代，数据的嵌入式系统有了越来越重要的地位。而USB是目前设计成熟、应用广泛且使用极为简捷的技术，USB传输是一种高效方便的数据传输方式。基于上述原因，本文重点论述基于USB Diodes 公司的电源块 MOSFET 可提升功率转换器Diodes 公司 (Nasdaq：DIOD) 今日宣布推出新一代首款独立 MOSFET。DMN3012LEG 采用轻巧封装，可提升效率，大幅节省各种电源转换与控制产品应用的成本、电力与空间。DMN3012LEG 在 BH1417调频立体声发射机这款小电台除了能发送自己播送的立体声语音信号外，还可以将计算机声卡、游戏机、CD机、DVD机、MP3播放机、调音台等立体声信号进行FM调制并发射。小电台的特点与功能小电台有两路麦克风，可以实现立体声节
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