参数资料
型号: 20-101-1094
厂商: Rabbit Semiconductor
文件页数: 64/130页
文件大小: 0K
描述: MCU RCM4000 RABBITCORE
标准包装: 1
系列: RabbitCore®
模块/板类型: MPU 核心模块
适用于相关产品: RCM4000
产品目录页面: 619 (CN2011-ZH PDF)
其它名称: 316-1139
User’s Manual
33
4.1.1 Memory I/O Interface
The Rabbit 4000 address lines (A0–A19) and all the data lines (D0–D7) are routed inter-
nally to the onboard flash memory and SRAM chips. I/0 write (/IOWR) and I/0 read
(/IORD) are available for interfacing to external devices. Parallel Port D is used for the
upper byte of the 16-bit memories.
Parallel Port A can also be used as an external I/O data bus to isolate external I/O from the
main data bus. Parallel Port B pins PB2–PB7 can also be used as an auxiliary address bus.
When using the auxiliary I/O bus for any reason, you must add the following line at the
beginning of your program.
#define PORTA_AUX_IO
// required to enable auxiliary I/O bus
Selected pins on Parallel Port E as specified in Table 2 may be used for input capture,
quadrature decoder, DMA, and pulse-width modulator purposes.
4.1.2 Other Inputs and Outputs
The status and the two SMODE pins, SMODE0 and SMODE1, can be brought out to
header J3 instead of PE5–PE7 as explained in Appendix A.6.
/RESET_IN is normally associated with the programming port, but may be used as an
external input to reset the Rabbit 4000 microprocessor and the RCM4000 memory.
/RESET_OUT is an output from the reset circuitry that can be used to reset other
peripheral devices.
49
VREF
Analog reference
voltage
1.15 V/2.048 V/2.500 V
on-chip ref. voltage
(RCM4000 only)
50
GND
Ground
* PE5, PE6, and PE7 are used for the Ethernet clock and I/O signals, which ordinarily would not
be routed to a general-purpose I/O header to minimize noise. Therefore, the RCM4000
RabbitCore modules present the SMODE and STATUS lines to header J3.
Table 2. RCM4000 Pinout Configurations (continued)
Pin
Pin Name
Default Use
Alternate Use
Notes
相关PDF资料
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相关代理商/技术参数
参数描述
20-101-1095 功能描述:模块化系统 - SOM BL2600 XD HOT SWAP 10/100 RoHS:否 制造商:Digi International 外观尺寸:ConnectCore 9P 处理器类型:ARM926EJ-S 频率:150 MHz 存储容量:8 MB, 16 MB 存储类型:NOR Flash, SDRAM 接口类型:I2C, SPI, UART 工作电源电压:3.3 V 最大工作温度:+ 85 C 尺寸:1.97 in x 1.97 in x 6.1 in
20-101-1104 功能描述:处理器配件 USB xd reader RoHS:否 制造商:Olimex Ltd. 产品:Cable 用于:
20-101-1105 功能描述:模块化系统 - SOM RCM4100 RabbitCore Module RoHS:否 制造商:Digi International 外观尺寸:ConnectCore 9P 处理器类型:ARM926EJ-S 频率:150 MHz 存储容量:8 MB, 16 MB 存储类型:NOR Flash, SDRAM 接口类型:I2C, SPI, UART 工作电源电压:3.3 V 最大工作温度:+ 85 C 尺寸:1.97 in x 1.97 in x 6.1 in
20-101-1110 功能描述:界面开发工具 Rio Protyping Board RoHS:否 制造商:Bourns 产品:Evaluation Boards 类型:RS-485 工具用于评估:ADM3485E 接口类型:RS-485 工作电源电压:3.3 V
20-101-1112 功能描述:模块化系统 - SOM RCM4010 Core Module RoHS:否 制造商:Digi International 外观尺寸:ConnectCore 9P 处理器类型:ARM926EJ-S 频率:150 MHz 存储容量:8 MB, 16 MB 存储类型:NOR Flash, SDRAM 接口类型:I2C, SPI, UART 工作电源电压:3.3 V 最大工作温度:+ 85 C 尺寸:1.97 in x 1.97 in x 6.1 in