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參數(shù)資料
| 型號： | 20-101-0556 |
| 廠商： | Rabbit Semiconductor |
| 文件頁數(shù)： | 77/94頁 |
| 文件大?。?/td> | 0K |
| 描述： | COMPUTER SNGL BD BL2000 IDC HDR |
| 標準包裝： | 1 |
| 系列： | SBC |
| 模塊/板類型： | 單板計算機模塊 |
| 適用于相關產品： | BL2000 |
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User’s Manual
75
C.2.1 Replacing the Backup Battery
The battery is user-replaceable, and is fitted in a battery holder. To replace the battery, lift
up on the spring clip and slide out the old battery. Use only a Panasonic CR2330 or equiv-
alent replacement battery, and insert it into the battery holder with the + side facing up.
NOTE: The SRAM contents and the real-time clock settings will be lost if the battery is
replaced with no power applied to the BL2000. Exercise care if you replace the battery
while external power is applied to the BL2000.
CAUTION: There is an explosion danger if the battery is short-circuited, recharged,
or replaced incorrectly. Replace the battery only with the same type or an equivalent
type recommended by the battery manufacturer. Dispose of used batteries according
to the battery manufacturer’s instructions.
C.2.2 Battery-Backup Circuit
Figure C-2 shows the battery-backup circuit.
Figure C-2. BL2000 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 U14, 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 BL2000.
J12
1
2
3
R25
11 kW
VRAM
1 kW
BT1
1 kW
R162
Internal Battery
VBAT-INT
R163
VBAT-EXT
External Battery
R165
47 kW
1 kW
R164
VBAT
Vcc
22 kW
R159
47 kW
VOSC
R92
D20
D16
D14
D18
C30
1 nF
C83
1 nF
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| 20-101-0654 | INTERFACE OP6800 512K FLASH&SRAM |
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| 20-101-1068 | MODULE RABBITCORE RCM3315 |
| 20-101-1131 | MODULE RCM4200 RABBITCORE |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| 20-101-0561 | 功能描述:模塊化系統(tǒng) - SOM RCM3400 Rabbit Core RoHS:否 制造商:Digi International 外觀尺寸:ConnectCore 9P 處理器類型:ARM926EJ-S 頻率:150 MHz 存儲容量:8 MB, 16 MB 存儲類型: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 |
| 20-101-0562 | 功能描述:模塊化系統(tǒng) - SOM RCM3410 RABBITCORE RoHS:否 制造商:Digi International 外觀尺寸:ConnectCore 9P 處理器類型:ARM926EJ-S 頻率:150 MHz 存儲容量:8 MB, 16 MB 存儲類型: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 |
| 20-101-0563 | 功能描述:模塊配件 RCM3400 PROTOTYPING BOARD RoHS:否 制造商:Lantronix 產品: 用于: |
| 20-101-0565 | 功能描述:模塊配件 BL2100 W/BTM MNT SOCKETS RoHS:否 制造商:Lantronix 產品: 用于: |
| 20-101-0566 | 功能描述:模塊配件 BL2100 Friction Lock RoHS:否 制造商:Lantronix 產品: 用于: |
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