参数资料
型号: ADUC7128BSTZ126-RL
厂商: Analog Devices Inc
文件页数: 41/92页
文件大小: 0K
描述: IC DAS MCU ARM7 ADC/DDS 64-LQFP
产品培训模块: ARM7 Applications & Tools
Intro to ARM7 Core & Microconverters
Process Control
Direct Digital Synthesis Tutorial Series (1 of 7): Introduction
标准包装: 1
系列: MicroConverter® ADuC7xxx
核心处理器: ARM7
芯体尺寸: 16/32-位
速度: 41.78MHz
连通性: I²C,SPI,UART/USART
外围设备: PLA,POR,PWM,PSM,温度传感器,WDT
输入/输出数: 28
程序存储器容量: 126KB(63K x 16)
程序存储器类型: 闪存
RAM 容量: 8K x 8
电压 - 电源 (Vcc/Vdd): 3 V ~ 3.6 V
数据转换器: A/D 10x12b; D/A 1x10b
振荡器型: 内部
工作温度: -40°C ~ 125°C
封装/外壳: 64-LQFP
包装: 标准包装
配用: EVAL-ADUC7128QSPZ-ND - KIT DEV FOR ADUC7128
其它名称: ADUC7128BSTZ126-RLDKR
ADuC7128/ADuC7129
Rev. 0 | Page 46 of 92
DACEN Register
Name
Address
Default Value
Access
DACEN
0xFFFF06B8
0x00
R/W
Table 50. DACEN MMR Bit Designations
Bit
Description
7:1
Reserved.
0
Set to 1 by the user to enable DAC mode.
Set to 0 by the user to enable DDS mode.
DACDAT Register
Name
Address
Default Value
Access
DACDAT
0xFFFF06B4
0x0000
R/W
Table 51. DACDAT MMR Bit Designations
Bit
Description
15:10
Reserved.
9:0
10-bit data for DAC.
The DACDAT MMR controls the output of the DAC. The data
written to this register is a ±9-bit signed value. This means that
0x0000 represents midscale, 0x0200 represents zero scale, and
0x01FF represents full scale.
DACEN and DACDAT require key access. To write to these
MMRs, use the sequences shown in Table 52.
Table 52. DACEN and DACDAT Write Sequences
DACEN
DACDAT
DACKEY0 = 0x07
DACEN = user value
DACDAT = user value
DACKEY1 = 0xB9
DDS
The DDS is used to generate a digital sine wave signal for the
DAC on the ADuC7128/ADuC7129. It can be enabled into
a free running mode by the user.
Both the phase and frequency can be controlled.
Table 53. DDSCON MMR Bit Designations
Bit
Description
7:6
Reserved.
5
DDS Output Enable.
Set by user to enable the DDS output. This has an effect only if the DDS is selected in DACCON.
Cleared by user to disable the DDS output.
4
Reserved.
Binary Divide Control.
DIV
Scale Ratio
0000
0.000
0001
0.125
0010
0.250
0011
0.375
0100
0.500
0101
0.625
0110
0.750
0111
0.875
3:0
1xxx
1.000
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