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| 型號(hào)： | ADUC831BS |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | MicroConverter, 12-Bit ADCs and DACs with Embedded 62 kBytes Flash MCU |
| 中文描述： | 8-BIT, FLASH, 16.78 MHz, MICROCONTROLLER, PQFP52 |
| 封裝： | PLASTIC, MQFP-52 |
| 文件頁(yè)數(shù)： | 26/76頁(yè) |
| 文件大小： | 1211K |
| 代理商： | ADUC831BS |
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REV. 0
–26–
ADuC831
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 the device up and
calibrate the ADC offset and gain.
MOV ADCCON1,#08CH
;ADC on; ADCCLK set
;to divide by 16, 4
;acquisition clock
To calibrate device offset:
MOV ADCCON2,#0BH
MOV ADCCON3,#25H
;select internal AGND
;select offset calibration,
;31 averages per bit,
;offset calibration
To calibrate device gain:
MOV ADCCON2,#0CH
MOV ADCCON3,#27H
;select internal VREF
;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
MOV ADCCON3,#25H
;select external AGND
;select offset calibration,
;31 averages per bit
To calibrate system gain:
Connect system V
REF
to an ADC channel input (1).
MOV ADCCON2,#01H
MOV ADCCON3,#27H
;select external VREF
;select offset calibration,
;31 averages per bit,
;offset calibration
The calibration cycle time, T
CAL
, is calculated by the following
equation assuming a 16 MHz crystal:
=
×
×
14
T
ADCCLK
NUMAV
T
CAL
ACQ
×
+
16
(
)
For an ADCCLK/F
CORE
divide ratio of 16, a T
ACQ
= 4 ADCCLK,
NUMAV = 15, the calibration cycle time is:
T
T
ms
CAL
=
4 2
.
In a calibration cycle the ADC busy flag (Bit 7), instead of
framing an individual ADC conversion as in normal mode, will
go high at the start of calibration and only return to zero 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:
CAL
=
×
×
×
+
14
(1 1000000
15
16
(
4
)
)
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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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADUC831BS-REEL | 制造商:Analog Devices 功能描述:MCU 8-bit ADuC8xx 8052 CISC 62KB Flash 3.3V/5V 52-Pin MQFP T/R |
| ADUC831BSZ | 功能描述:IC ADC/DAC 12BIT W/MCU 52-MQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:MicroConverter® ADuC8xx 標(biāo)準(zhǔn)包裝:250 系列:56F8xxx 核心處理器:56800E 芯體尺寸:16-位 速度:60MHz 連通性:CAN，SCI，SPI 外圍設(shè)備:POR，PWM，溫度傳感器，WDT 輸入/輸出數(shù):21 程序存儲(chǔ)器容量:40KB（20K x 16） 程序存儲(chǔ)器類型:閃存 EEPROM 大小:- RAM 容量:6K x 16 電壓 - 電源 (Vcc/Vdd):2.25 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 6x12b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 125°C 封裝/外殼:48-LQFP 包裝:托盤 配用:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323 |
| ADUC831BSZ-REEL | 功能描述:IC MCU 62K FLASH ADC/DAC 52MQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:MicroConverter® ADuC8xx 標(biāo)準(zhǔn)包裝:38 系列:Encore!® XP® 核心處理器:eZ8 芯體尺寸:8-位 速度:5MHz 連通性:IrDA，UART/USART 外圍設(shè)備:欠壓檢測(cè)/復(fù)位，LED，POR，PWM，WDT 輸入/輸出數(shù):16 程序存儲(chǔ)器容量:4KB（4K x 8） 程序存儲(chǔ)器類型:閃存 EEPROM 大小:- RAM 容量:1K x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:- 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 105°C 封裝/外殼:20-SOIC（0.295"，7.50mm 寬） 包裝:管件 其它名稱:269-4116Z8F0413SH005EG-ND |
| ADUC832 | 制造商:AD 制造商全稱:Analog Devices 功能描述:MicroConverter, 12-Bit ADCs and DACs with Embedded 62 kBytes Flash MCU |
| ADUC832BCP | 制造商:Analog Devices 功能描述:MCU 8-Bit ADuC8xx 8052 CISC 62KB Flash 3V/5V 56-Pin LFCSP EP 制造商:Rochester Electronics LLC 功能描述:8BIT CISC 62KB FLASH 16.78MHZ 3.3/5V 56LFCSP - Bulk |
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