參數(shù)資料
型號(hào)： 20-101-0788
廠商： Rabbit Semiconductor
文件頁數(shù)： 71/90頁
文件大小： 0K
描述： COMPUTER SGL-BOARD OP6600 W/SRAM
標(biāo)準(zhǔn)包裝： 1
系列： SBC
模塊/板類型： 單板計(jì)算機(jī)模塊
適用于相關(guān)產(chǎn)品： OP6600
User’s Manual
69
Figure C-3 shows the battery-backup circuitry on the Intellicom board.
Figure C-3. Intellicom Battery-Backup 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 U13, which keeps the 32.768 kHz oscillator working
when the voltage begins to drop.
VRAM and Vcc are nearly equal (<100 mV, typically 10 mV) when power is supplied to
the Intellicom. VRAM is also available on pin 34 of header J2 to facilitate battery backup
of the external circuit. Note that the recommended minimum resistive load at VRAM is
100 k
, and new battery life calculations should be done to take external loading into
account.
C.2.2 Power to VRAM Switch
The VRAM switch, shown in Figure C-4, allows the battery backup to provide power
when the external power goes off. The switch provides an isolation between Vcc and the
battery when Vcc goes low. This prevents the Vcc line from draining the battery.
R36
8.2 kW
VRAM
VBAT-EXT
External Battery
R37
47 kW
2 kW
R35
R39
22 kW
VBAT
Vcc
22 kW
R38
22 kW
U13
pin 5
R34
D4
D2
D3
T
thermistor
C16
1 nF
C15
1 nF
相關(guān)PDF資料
PDF描述
20-101-1068 MODULE RABBITCORE RCM3315
20-101-1131 MODULE RCM4200 RABBITCORE
20-101-1139 RCM4310 RABBITCORE
20-101-1154 MODULE RCM4120 RABBITCORE
20-101-1197 MODULE RABBITCORE RCM3910 ROHS
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
201-0108-01 功能描述:印刷電路板和試驗(yàn)板 RJ11/45 and USB Connector RoHS:否 制造商:3M Electronic Solutions Division 產(chǎn)品:Jumper & Insulated Wires 描述/功能:Jumper wire, 22 AWG 0.1 inch 長度:0.1 in 寬度:
20-101-0818 功能描述:單板計(jì)算機(jī) BL2100 Fric Lk 512K RoHS:否 制造商:Ampro By ADLINK 外觀尺寸:EPIC 處理器類型:Intel Atom D510 頻率:1.66 GHz 存儲(chǔ)容量:2 GB (max) 存儲(chǔ)類型:DDR2, L2 Cache 接口類型:Ethernet, PS/2, SATA, Serial, USB 工作電源電壓:5 V, 12 V 功耗:13 W 最大工作溫度:+ 70 C 尺寸:165.1 mm x 114.3 mm
20-101-0820 功能描述:COMPUTER SGL-BD BL2000 SRAM/FLSH RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器或微處理器模塊 系列:SBC 產(chǎn)品目錄繪圖:DLP-245SY-G 標(biāo)準(zhǔn)包裝:1 系列:USB 模塊/板類型:開發(fā)板 適用于相關(guān)產(chǎn)品:USB 其它名稱:813-1006
20-101-0841 功能描述:模塊化系統(tǒng) - SOM BL2000 FRICT LOCK W/ RoHS:否 制造商:Digi International 外觀尺寸:ConnectCore 9P 處理器類型:ARM926EJ-S 頻率:150 MHz 存儲(chǔ)容量:8 MB, 16 MB 存儲(chǔ)類型:NOR Flash, SDRAM 接口類型:I2C, SPI, UART 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 尺寸:1.97 in x 1.97 in x 6.1 in
20-101-0847 功能描述:模塊化系統(tǒng) - SOM BL2121 LOCK RoHS:否 制造商:Digi International 外觀尺寸:ConnectCore 9P 處理器類型:ARM926EJ-S 頻率:150 MHz 存儲(chǔ)容量:8 MB, 16 MB 存儲(chǔ)類型:NOR Flash, SDRAM 接口類型:I2C, SPI, UART 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 尺寸:1.97 in x 1.97 in x 6.1 in
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