参数资料
型号: 20-101-1217
厂商: Rabbit Semiconductor
文件页数: 25/138页
文件大小: 0K
描述: MODULE RABBITCORE RCM3229
标准包装: 50
系列: RabbitCore®
模块/板类型: MPU 核心模块
适用于相关产品: RCM3229
产品目录页面: 620 (CN2011-ZH PDF)
其它名称: 316-1146
114
RabbitCore RCM3200
The drain on the battery by the RCM3200 is typically 12 A when no other power is sup-
plied. If a 165 mAh battery is used, the battery can last almost 2 years:
The actual life in your application will depend on the current drawn by components, not
on the RCM3200 and the storage capacity of the battery. The RCM3200 does not drain the
battery while it is powered up normally.
Cycle the main power off/on on the RCM3200 after you install a backup battery for the
first time, and whenever you replace the battery. This step will minimize the current drawn
by the real-time clock oscillator circuit from the backup battery should the RCM3200
experience a loss of main power.
NOTE: Remember to cycle the main power off/on any time the RCM3200 is removed
from the Protoyping Board or motherboard since that is where the backup battery
would be located.
Rabbit’s Technical Note TN235, External 32.768 kHz Oscillator Circuits, provides addi-
tional information about the current draw by the the real-time clock oscillator circuit.
D.1.2 Battery-Backup Circuit
Figure D-2 shows the battery-backup circuit.
Figure D-2. RCM3200 Backup Battery Circuit
The battery-backup circuit serves three purposes:
It reduces the battery voltage to the SRAM and to the real-time clock, thereby limiting
the current consumed by the real-time clock and lengthening the battery life.
It ensures that current can flow only out of the battery to prevent charging the battery.
A voltage, VOSC, is supplied to U5, which keeps the 32.768 kHz oscillator working
when the voltage begins to drop.
165 mAh
12 A
------------------------
1.6 years.
=
VRAM
150 kW
R34
VBAT-EXT
External Battery
R33
47 kW
VOSC
D1
R32
100 W
C38
100 nF
C41
2.2 nF
相关PDF资料
PDF描述
20-101-0494 MODULE RABBITCORE RCM2250
AT25020N-10SI-2.7 IC EEPROM 2KBIT 2.1MHZ 8SOIC
345-030-521-801 CARDEDGE 30POS DUAL .100 GREEN
12FMN-BMTTN-A-TF CONN FMN HSNG 12POS STAG NOR SMD
AT25020-10PI-2.7 IC EEPROM 2KBIT 2.1MHZ 8DIP
相关代理商/技术参数
参数描述
20-101-1220 功能描述:单板计算机 BL4S200 (RCM4310-based) RoHS:否 制造商:Ampro By ADLINK 外观尺寸:EPIC 处理器类型:Intel Atom D510 频率:1.66 GHz 存储容量:2 GB (max) 存储类型:DDR2, L2 Cache 接口类型:Ethernet, PS/2, SATA, Serial, USB 工作电源电压:5 V, 12 V 功耗:13 W 最大工作温度:+ 70 C 尺寸:165.1 mm x 114.3 mm
20-101-1221 功能描述:射频模块 RCM4400W Japan Telec Certfied RoHS:否 制造商:Linx Technologies 产品:Transceiver Modules 频带:902 MHz to 928 MHz 输出功率:- 15.5 dBm to + 12.5 dBm 接口类型:UART 工作电源电压:- 0.3 VDC to + 5.5 VDC 传输供电电流:38.1 mA 接收供电电流:22.7 mA 天线连接器类型:U.FL 最大工作温度:+ 85 C 尺寸:1.15 mm x 0.63 mm x 0.131 mm
20-101-1235 功能描述:模块化系统 - SOM RCM5700 Minicore 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
20-101-1236 功能描述:界面开发工具 INTERFACE BOARD RCM56/57XX 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
20-101-1246 功能描述:模块化系统 - SOM RCM5400W 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