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| 型號： | EVAL-ADUC832QSZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 39/92頁 |
| 文件大?。?/td> | 0K |
| 描述： | KIT DEV FOR ADUC832 QUICK START |
| 產(chǎn)品培訓(xùn)模塊： | Process Control |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | QuickStart™ 套件 |
| 類型： | MCU |
| 適用于相關(guān)產(chǎn)品： | ADuC832 |
| 所含物品： | 評估板，線纜，電源，軟件和文檔 |
| 其它名稱： | EVAL-ADUC832QS EVAL-ADUC832QS-ND |
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ADuC832
Data Sheet
Rev. B | Page 44 of 92
INITIATING CALIBRATION IN CODE
When calibrating the ADC using ADCCON1, the ADC should
be set up into the configuration in which it will be used. The
ADCCON3 register can then be used to set up the device and
calibrate the ADC offset and gain.
MOV ADCCON1,#0ACH
;ADC on; ADCCLK set
;to divide by 16,4
;acquisition clock
To calibrate device offset:
MOV ADCCON2,#0BH
;select internal AGND
MOV ADCCON3,#25H
;select offset calibration,
;31 averages per bit,
;offset calibration
To calibrate device gain:
MOV ADCCON2,#0CH
;select internal VREF
MOV ADCCON3,#27H
;select offset calibration,
;31 averages per bit,
;offset calibration
To calibrate system offset:
Connect system AGND to an ADC channel input (0).
MOV ADCCON2,#00H
;select external AGND
MOV ADCCON3,#25H
;select offset calibration,
;31 averages per bit
To calibrate system gain:
Connect system VREF to an ADC channel input (1).
MOV ADCCON2,#01H
;select external VREF
MOV ADCCON3,#27H
;select offset calibration
;31 averages per bit,
;offset calibration
The calibration cycle time, tCAL, is calculated by the following
equation:
tCAL = 14 × ADCCLK × NUMAV × (16 + tACQ)
For an ADCCLK/fCORE divide ratio of 16, with tACQ = 4 ADCCLK,
and NUMAV = 15, the calibration cycle time is:
tCAL = 14 × (1/1,048,576) × 15 × (16 + 4)
tCAL = 4.2 ms
In a calibration cycle, the ADC busy flag (ADCCON3[7]),
instead of framing an individual ADC conversion as in normal
mode, goes high at the start of calibration and only returns to 0
at the end of the calibration cycle. It can therefore be monitored
in code to indicate when the calibration cycle is completed. The
following code can be used to monitor the busy signal during a
calibration cycle:
WAIT:
MOV A, ADCCON3
;move ADCCON3 to A
JB ACC.7, WAIT
;If Bit 7 is set, jump to
WAIT, else continue
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| EVAL-ADUC834QS | 制造商:Analog Devices 功能描述:DATA ACQ SYS, MICROCNVRTR, DUAL 16BIT/24BIT - ADCS W/ EMBEDD - Bulk 制造商:Analog Devices 功能描述:8052 ADUC834 QUICKSTART DEV KIT |
| EVAL-ADUC834QSZ | 功能描述:KIT DEV QUICK START ADUC834 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 通用嵌入式開發(fā)板和套件（MCU、DSP、FPGA、CPLD等） 系列:QuickStart™ 套件 標(biāo)準(zhǔn)包裝:1 系列:PICDEM™ 類型:MCU 適用于相關(guān)產(chǎn)品:PIC10F206，PIC16F690，PIC16F819 所含物品:板，線纜，元件，CD，PICkit 編程器 產(chǎn)品目錄頁面:659 (CN2011-ZH PDF) |
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| EVAL-ADUC841QSP2 | 制造商:AD 制造商全稱:Analog Devices 功能描述:MicroConverter 12-Bit ADCs and DACs with Embedded High Speed 62-kB Flash MCU |
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