參數(shù)資料
型號(hào): ADUC7128BCPZ126
廠商: Analog Devices Inc
文件頁(yè)數(shù): 40/92頁(yè)
文件大?。?/td> 0K
描述: IC DAS MCU ARM7 ADC/DDS 64-LFCSP
產(chǎn)品培訓(xùn)模塊: Direct Digital Synthesis Tutorial Series (1 of 7): Introduction
標(biāo)準(zhǔn)包裝: 1
系列: MicroConverter® ADuC7xxx
核心處理器: ARM7
芯體尺寸: 16/32-位
速度: 41.78MHz
連通性: I²C,SPI,UART/USART
外圍設(shè)備: PLA,POR,PWM,PSM,溫度傳感器,WDT
輸入/輸出數(shù): 28
程序存儲(chǔ)器容量: 126KB(63K x 16)
程序存儲(chǔ)器類(lèi)型: 閃存
RAM 容量: 8K x 8
電壓 - 電源 (Vcc/Vdd): 3 V ~ 3.6 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 10x12b; D/A 1x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 125°C
封裝/外殼: 64-LFQFN 裸露焊盤(pán),CSP
包裝: 托盤(pán)
配用: EVAL-ADUC7128QSPZ-ND - KIT DEV FOR ADUC7128
ADuC7128/ADuC7129
Rev. 0 | Page 45 of 92
OTHER ANALOG PERIPHERALS
DAC
The ADuC7128/ADuC7129 feature a 10-bit current DAC that
can be used to generate user-defined waveforms or sine waves
generated by the DDS. The DAC consists of a 10-bit IDAC
followed by a current-to-voltage conversion.
The current output of the IDAC is passed through a resistor and
capacitor network where it is both filtered and converted to a
voltage. This voltage is then buffered by an op amp and passed
to the line driver.
For the DAC to function, the internal 2.5 V voltage reference
must be enabled and driven out onto an external capacitor,
REFCON = 0x01.
Once the DAC is enabled, users see a 5 mV drop in the internal
reference value. This is due to bias currents drawn from the
reference used in the DAC circuitry. It is recommended that if
using the DAC, it be left powered on to avoid seeing variations
in ADC results.
Table 49. DACCON MMR Bit Designations
Bit
Value
Description
10:9
Reserved. These bits should be written to 0 by the user.
8
Reserved. This bit should be written to 0 by the user.
7
Reserved. This bit should be written to 0 by the user.
6
Reserved. This bit should be written to 0 by the user.
5
Output Enable. This bit operates in all modes. In Line Driver mode, this bit should be set.
Set by user to enable the line driver output.
Cleared by user to disable the line driver output. In this mode the line driver output is high impedance.
4
Single-Ended or Differential Output Control.
Set by user to operate in differential mode, the output is the differential voltage between LD1TX and LD2TX. The voltage
output range is VREF/2 ± VREF/2.
Cleared by user to reference the LD1TX output to AGND. The voltage output range is AVDD/2 ± VREF/2.
3
Reserved. This bit should be set to 0 by the user.
Operation Mode Control. This bit selects the mode of operation of the DAC.
00
Power-Down.
01
Reserved.
10
Reserved.
2:1
11
DDS and DAC Mode. Selected by DACEN.
0
DAC Update Rate Control. This bit has no effect when in DDS mode.
Set by user to update the DAC on the negative edge of Timer1. This allows the user to use any one of the core CLK, OSC
CLK, baud CLK, or user CLK and divide these down by 1, 16, 256, or 32,768. A user can do waveform generation by
writing to the DAC data register from RAM and updating the DAC at regular intervals via Timer1.
Cleared by user to update the DAC on the negative edge of HCLK.
相關(guān)PDF資料
PDF描述
GTC02R-22-19P CONN RCPT 14POS BOX MNT W/PINS
D38999/26FJ61PN CONN PLUG 61POS STRAIGHT W/PINS
ADUC843BCPZ62-3 IC MCU FLASH 12BIT ADC 56LFCSP
GTC06A-22-19S CONN PLUG 14POS STRAIGHT W/SCKT
ADM1024ARU-REEL IC MONITOR SYS TEMP/VOLT 24TSSOP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADUC7128BCPZ1262 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:Precision Analog Microcontroller ARM7TDMI MCU with 12-Bit ADC and DDS DAC
ADUC7128BCPZ126-RL 功能描述:IC DAS MCU ARM7 ADC/DDS 64-LFCSP RoHS:是 類(lèi)別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:MicroConverter® ADuC7xxx 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(lèi)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(chēng):269-4116Z8F0413SH005EG-ND
ADUC7128BCPZ126-RL2 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:Precision Analog Microcontroller ARM7TDMI MCU with 12-Bit ADC and DDS DAC
ADUC7128BSTZ126 功能描述:IC DAS MCU ARM7 ADC/DDS 64-LQFP RoHS:是 類(lèi)別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:MicroConverter® ADuC7xxx 標(biāo)準(zhǔn)包裝:250 系列:LPC11Uxx 核心處理器:ARM? Cortex?-M0 芯體尺寸:32-位 速度:50MHz 連通性:I²C,Microwire,SPI,SSI,SSP,UART/USART,USB 外圍設(shè)備:欠壓檢測(cè)/復(fù)位,POR,WDT 輸入/輸出數(shù):40 程序存儲(chǔ)器容量:96KB(96K x 8) 程序存儲(chǔ)器類(lèi)型:閃存 EEPROM 大小:4K x 8 RAM 容量:10K x 8 電壓 - 電源 (Vcc/Vdd):1.8 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 8x10b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:48-LQFP 包裝:托盤(pán) 其它名稱(chēng):568-9587
ADUC7128BSTZ1262 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:Precision Analog Microcontroller ARM7TDMI MCU with 12-Bit ADC and DDS DAC