欧美成人免费电影,国产欧美一区二区三区精品酒店,精品国产a毛片,色网在线免费观看

參數資料
型號: AD7870LP
廠商: ANALOG DEVICES INC
元件分類: ADC
英文描述: LC2MOS Complete, 12-Bit, 100 kHz, Sampling ADCs
中文描述: 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL/PARALLEL ACCESS, PQCC28
封裝: PLASTIC, MO-047AB, LCC-28
文件頁數: 13/20頁
文件大小: 331K
代理商: AD7870LP
REV. B
2
AD7870/AD7875/AD7876
–13–
MICROPROCE SSOR INT E RFACE
T he AD7870/AD7875/AD7876 has a wide variety of interfacing
options. It offers two operating modes and three data-output for-
mats. Fast data access times allow direct interfacing to most mi-
croprocessors including the DSP processors.
Parallel Read Interfacing
Figures 17 to 19 show interfaces to the ADSP-2100, T MS32010
and the T MS32020 DSP processors. T he ADC is operating in
Mode 1, parallel read for all three interfaces. An external timer
controls conversion start asynchronously to the microprocessor.
At the end of each conversion the ADC
BUSY
/
INT
interrupts
the microprocessor. T he conversion result is read from the ADC
with the following instruction:
ADSP-2100: MR0 = DM(ADC)
T MS32010: IN D,ADC
T MS32020: IN D,ADC
MR0 = ADSP-2100 MR0 Register
D = Data Memory Address
ADC = AD7870/AD7875/AD7876 Address
Some applications may require that conversions be initiated by
the microprocessor rather than an external timer. One option is
to decode the
CONVST
signal from the address bus so that a
write operation to the ADC starts a conversion. Data is read at
the end of conversion as described earlier. Note: a read operation
must not be attempted during conversion.
Figure 17. ADSP-2100 Parallel Interface
Figure 18. TMS32010 Parallel Interface
Figure 19. TMS32020 Parallel Interface
T wo Byte Read Interfacing
68008 Interface
Figure 20 shows an 8-bit bus interface for the MC68008 micro-
processor. For this interface, the 12/
8
/CLK input is tied to 0 V
and the DB11/HBEN pin is driven from the microprocessor
least significant address bit. Conversion start control is provided
by the microprocessor. In this interface example, a Move in-
struction from the ADC address both starts a conversion and
reads the conversion result.
MOVEW ADC,DO
ADC = AD7870/AD7875/AD7876 address
D0 = 68008 D0 register
T his is a two byte read instruction. During the first read opera-
tion
BUSY
, in conjunction with
CS
, forces the microprocessor
to WAIT for the ADC conversion. At the end of conversion the
ADC low byte (DB7–DB0) is loaded into D15–D8 of the D0
register and the ADC high byte (DB15–DB7) is loaded into
D7–D0 of the D0 register. T he following Rotate instruction to
the D0 register swaps the high and low bytes to the correct
format.
R0L = 8, D0.
Note: while executing the two byte read instruction above,
WAIT states are inserted during the first read operation only
and not for the second.
Figure 20. MC68008 Byte Interface
相關PDF資料
PDF描述
AD7870SQ LC2MOS Complete, 12-Bit, 100 kHz, Sampling ADCs
AD7870TQ LC2MOS Complete, 12-Bit, 100 kHz, Sampling ADCs
AD7876CN 16-Bit, Pseudo Bipolar, Fully Diff Input, 250kSPS Serial Out, 2.7V to 5.5V Micro Power Sampling ADC 8-MSOP -40 to 85
AD7876CQ 16-Bit, Pseudo Bipolar, Fully Diff Input, 250kSPS Serial Out, 2.7V to 5.5V Micro Power Sampling ADC 8-MSOP -40 to 85
AD7876CR 16-Bit, Pseudo Bipolar, Fully Diff Input, 250kSPS Serial Out, 2.7V to 5.5V Micro Power Sampling ADC 8-MSOP -40 to 85
相關代理商/技術參數
參數描述
AD7870LP-REEL 制造商:AD 制造商全稱:Analog Devices 功能描述:LC2MOS Complete, 12-Bit, 100 kHz, Sampling ADCs
AD7870LPZ 功能描述:IC ADC 12BIT SAMPLING 3V 28-PLCC RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:1 系列:- 位數:14 采樣率(每秒):83k 數據接口:串行,并聯 轉換器數目:1 功率耗散(最大):95mW 電壓電源:雙 ± 工作溫度:0°C ~ 70°C 安裝類型:通孔 封裝/外殼:28-DIP(0.600",15.24mm) 供應商設備封裝:28-PDIP 包裝:管件 輸入數目和類型:1 個單端,雙極
AD7870LPZ1 制造商:AD 制造商全稱:Analog Devices 功能描述:LC2MOS Complete, 12-Bit, 100 kHz, Sampling ADCs
AD7870SE/883B 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog-to-Digital Converter, 12-Bit
AD7870SQ 功能描述:模數轉換器 - ADC 12-Bit 100kHz Sampling RoHS:否 制造商:Analog Devices 通道數量: 結構: 轉換速率: 分辨率: 輸入類型: 信噪比: 接口類型: 工作電源電壓: 最大工作溫度: 安裝風格: 封裝 / 箱體:
主站蜘蛛池模板: 会泽县| 玉溪市| 巴林右旗| 东辽县| 宁远县| 奇台县| 克什克腾旗| 福鼎市| 昌宁县| 马鞍山市| 资兴市| 永州市| 平陆县| 三原县| 松溪县| 甘谷县| 汉源县| 繁昌县| 仁布县| 贵溪市| 涪陵区| 巴林左旗| 大兴区| 滁州市| 苍梧县| 余庆县| 安新县| 浙江省| 金山区| 永康市| 新巴尔虎左旗| 武冈市| 瑞昌市| 交城县| 兴安县| 天长市| 正镶白旗| 卢龙县| 永福县| 墨江| 万山特区|