参数资料
型号: 20-101-1154
厂商: Rabbit Semiconductor
文件页数: 108/112页
文件大小: 0K
描述: MODULE RCM4120 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: RCM4120
其它名称: 316-1122
User’s Manual
91
Many other possible ranges are possible by physically changing the resistor values that
make up the attenuator circuit.
NOTE: Analog input LN7_IN does not have the 10 k
resistor installed, and so no
resistor attenuator is available, limiting its maximum input voltage to 2 V. This input is
intended to be used for a thermistor that you may install at header location JP25.
It is also possible to read a negative voltage on LN0_IN–LN5_IN by moving the 0
jumper (see Figure B-6) on header JP23 or JP24 associated with the A/D converter input
from analog ground to the reference voltage generated and buffered by the A/D converter.
Adjacent input channels are paired; moving the jumper on JP 23 changes both of the
paired channels (LN4_IN–LN5_IN), and moving the jumper on JP24 changes LN0_IN–
LN1_IN and LN2_IN–LN3_IN. At the present time Rabbit does not offer the software
drivers to work with single-ended negative voltages, but the differential mode described
below may be used to measure negative voltages.
Differential measurements require two channels. As the name differential implies, the dif-
ference in voltage between the two adjacent channels is measured rather than the differ-
ence between the input and analog ground. Voltage measurements taken in differential
mode have a resolution of 12 bits, with the 12th bit indicating whether the difference is
positive or negative.
The A/D converter chip can only accept positive voltages, as explained in Section 4.4. Both
differential inputs must be referenced to analog ground, and both inputs must be positive
with respect to analog ground. Table B-4 provides the differential voltage ranges for this
setup.
Table B-4. Differential Voltage Ranges
Min. Differential
Voltage
(V)
Max. Differential
Voltage (with
prescaler)
(V)
Gain
Multiplier
A/D Converter
Actual Gain
Resolution
(mV)
0
±22.528
×1
1
11
0±11.264
×2
1.8
5.5
0
±5.632
×4
3.6
2.75
0
±4.506
×5
4.5
2.20
0
±2.816
×8
7.2
1.375
0
±2.253
×10
9.0
1.100
0
±1.408
×16
14.4
0.688
0
±1.126
×20
18
0.550
相关PDF资料
PDF描述
20-101-1197 MODULE RABBITCORE RCM3910 ROHS
20-101-1215 MCU RCM4050 RABBITCORE
20-101-1246 CORE MODULE RCM5400W
20-101-1260 BL5S220 SBC (RCM5400-BASED)
20-101-1319 MINCORE MODULE RCM6710
相关代理商/技术参数
参数描述
20-101-1170 功能描述:Zigbee/802.15.4模块 RCM4510W CORE MODULE RoHS:否 制造商:Digi International 频带:902 MHz to 928 MHz 视线范围: 数据速率: 灵敏度: 工作电源电压:2.4 V to 3.6 V 传输供电电流:215 mA 接收供电电流:26 mA 输出功率:250 mW 天线连接器类型:Wire 最大工作温度:+ 85 C 尺寸:32.94 mm x 22 mm x 2.03 mm
20-101-1179 功能描述:模块化系统 - SOM RCM3209 RABBITCORE 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
20-101-1183 功能描述:程序设计器配件 USB PROGRAM CABLE RoHS:否 制造商:Lattice 产品:ispDOWNLOAD Cables 用于:In-system Programming
20-101-1184 功能描述:模块化系统 - SOM IC CPU RABBIT 2000 (2 pack) 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
20-101-1185 功能描述:微处理器 - MPU IC CPU RABBIT 3000A (2 pack) RoHS:否 制造商:Atmel 处理器系列:SAMA5D31 核心:ARM Cortex A5 数据总线宽度:32 bit 最大时钟频率:536 MHz 程序存储器大小:32 KB 数据 RAM 大小:128 KB 接口类型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作电源电压:1.8 V to 3.3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:FBGA-324