參數(shù)資料
型號(hào)： 101-0600
廠商： Rabbit Semiconductor
文件頁(yè)數(shù)： 31/106頁(yè)
文件大?。?/td> 0K
描述： COMPUTER SNGLBD BL2510 512K FLSH
標(biāo)準(zhǔn)包裝： 10
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： BL2510
24
Coyote (BL2500)
PB2 can be imagined to be a “DA0 voltage is too low” indicator. If DA0 is smaller than
the analog voltage presented at AD0, then PB2 will be true (high). If this happens, the pro-
gram will need to raise the DA0 voltage.
The A/D converter has no reference voltage. There is a relative accuracy between mea-
surements, but no absolute accuracy without calibration. This is because the +3.3 V supply
can vary ±5%, the pulse-width modulated outputs might not reach the full 0 V and 3.3 V
rails out of the Rabbit 3000 microprocessor, and the gain resistors used in the circuit have
a 1% tolerance. For these reasons, each Coyote needs to be calibrated individually, with
the constants held in software, to be able to rely on an absolute accuracy. The Coyote has
this calibration support.
An A/D conversion takes less than 100 ms with a 29.4 MHz Coyote.
3.4.2 D/A Converters
Two D/A converter outputs, DA0 and DA1, are supplied on the Coyote. These are shown
Figure 14. Schematic Diagram of D/A Converters
The D/A converters have no reference voltage. Although they may be fairly accurate from
one programmed voltage to the next, they do not have absolute accuracy. This is because
the +3.3 V supply can change ±5%, the PWM outputs might not achieve the full 0 V and 3.3 V
rail out of the processor, and the gain resistors in the circuit have a 1% tolerance. The D/A
converters therefore need individual calibration, with the calibration constants held in
software before absolute accuracy can be relied on. The Coyote has such calibration.
Note that DA0 is used to provide a reference voltage for the A/D converter and is unavail-
able for D/A conversion when the A/D converter is being used.
+
LM324
PF6
9
10
8
R6
24.9 kW
DA0
R4
1.0 kW
R12
10 kW
C2
100 nF
R7
24.9 kW
+
LM324
PF7
DA1
1.0 kW
100 nF
R10
24.9 kW
C5
R15
R13
24.9 kW
12
13
14
10 kW
R9
相關(guān)PDF資料
PDF描述
101-0575 COMPUTER SNGLBD BL2500 256K FLSH
20-101-0526 COMPUTER SNGLBD LP3510 FOX7.4MHZ
101-0526 COMPUTER SNGLBD LP3510 FOX7.4MHZ
101-0576 COMPUTER SNGLBD BL2510 256K FLSH
20-101-1055 MODULE RABBITCORE RCM3375
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
101-0601 功能描述:處理器配件 Keypad/Display Unit 3.3V w/o Case RoHS:否 制造商:Olimex Ltd. 產(chǎn)品:Cable 用于:
101-0602 功能描述:單板計(jì)算機(jī) BL2500 512K/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
10106020-1 制造商:Amphenol Corporation 功能描述:10-305770-028 - Bulk
10106020-2 制造商:Amphenol Corporation 功能描述:10106020-2 - Bulk
10106029-001LF 功能描述:電源到板 15DC+16S Right Angle HCI Header RoHS:否 制造商:TE Connectivity / AMP 系列:5787444 產(chǎn)品類型:Connectors 觸點(diǎn)類型: 電壓額定值:50 V 電流額定值: 節(jié)距: 位置/觸點(diǎn)數(shù)量:5 安裝風(fēng)格:Through Hole 端接類型: 觸點(diǎn)電鍍:Tin
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