APPENDIX D. POWER
參數(shù)資料
型號： 20-101-1196
廠商： Rabbit Semiconductor
文件頁數(shù)： 70/168頁
文件大?。?/td> 0K
描述： MODULE RABBITCORE RCM3900
標準包裝： 1
系列： RabbitCore®
模塊/板類型： MPU 核心模塊
適用于相關(guān)產(chǎn)品： RCM3900
其它名稱： 20-101-1196-ND
316-1155
RabbitCore RCM3900 User’s Manual
161
APPENDIX D. POWER SUPPLY
Appendix D provides information on the current requirements
of the RCM3900, and includes some background on the chip
select circuit used in power management.
D.1 Power Supplies
Power is supplied from the motherboard to which the RCM3900 is connected via header
J62. The RCM3900 requires a regulated 3.15 V to 3.45 V DC power source. An RCM3900
with no loading at the outputs operating at 44.2 MHz typically draws 350 mA.
D.1.1 Battery Backup
The RCM3900 does not have a battery, but there is provision for a customer-supplied bat-
tery to back up the data SRAM and keep the internal Rabbit 3000 real-time clock running.
Header J62, shown in Figure D-1, allows access to the external battery. This header makes
it possible to connect an external 3 V power supply. This allows the SRAM and the inter-
nal Rabbit 3000 real-time clock to retain data with the RCM3900 powered down.
Figure D-1. External Battery Connections
at Header J62
VRAM
+3.3 VIN
30
31
29
32
VBAT_EXT
GND
External
Battery
J62
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20-101-1198 功能描述:程序設(shè)計器配件 Programmers, Development Systems Accessories - CARD EXPANSION RN1400 ROHS RoHS:否 制造商:Lattice 產(chǎn)品:ispDOWNLOAD Cables 用于:In-system Programming
20-101-1200 功能描述:子卡和OEM板 UNIVERSAL RELAY EXP BOARD RoHS:否 制造商:BeagleBoard by CircuitCo 產(chǎn)品:BeagleBone LCD4 Boards 用于:BeagleBone - BB-Bone - Open Source Development Kit
20-101-1201 功能描述:程序設(shè)計器配件 USB PROG CBL WITH 2MM CONN RoHS:否 制造商:Lattice 產(chǎn)品:ispDOWNLOAD Cables 用于:In-system Programming
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