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参数资料
| 型号： | EVAL-AD7747EBZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 5/28页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL FOR AD7747 |
| 标准包装： | 1 |
| 传感器类型： | 触摸，电容式 |
| 接口： | I²C |
| 电源电压： | 2.7 V ~ 5.25 V |
| 嵌入式： | 否 |
| 已供物品： | 板，缆线，CD |
| 已用 IC / 零件： | AD7747 |
| 产品目录页面： | 781 (CN2011-ZH PDF) |
| 相关产品： | AD7747ARUZ-REEL7-ND - IC CONV CAP TO DIG 24BIT 16TSSOP AD7747ARUZ-REEL-ND - IC CONV CAP TO DIG 24BIT 16TSSOP AD7747ARUZ-ND - IC CONV 24BIT CAP-DGTL 16-TSSOP |
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AD7747
Rev. 0 | Page 13 of 28
the bus, allowing another master device to take control of the
bus. Therefore, a master wanting to retain control of the bus
issues successive start conditions known as repeated start
conditions.
AD7747 RESET
To reset the AD7747 without having to reset the entire I2C bus,
an explicit reset command is provided. This uses a particular
address pointer word as a command word to reset the part and
upload all default settings. The AD7747 does not respond to the
I2C bus commands (do not acknowledge) during the default
values upload for approximately 150 μs (max 200 μs).
The reset command address word is 0xBF.
GENERAL CALL
When a master issues a slave address consisting of seven 0s with
the eighth bit (R/W bit) set to 0, this is known as the general call
address. The general call address is for addressing every device
connected to the I2C bus. The AD7747 acknowledges this
address and read in the following data byte.
If the second byte is 0x06, the AD7747 is reset, completely
uploading all default values. The AD7747 does not respond to
the I2C bus commands (do not acknowledge) during the default
values upload for approximately 150 μs (200 μs maximum).
The AD7747 does not acknowledge any other general call
commands.
P
9
8
1–7
9
8
1–7
9
8
S
SDATA
SCLOCK
START ADDR
ACK
DATA
ACK
STOP
SUBADDRESS
1–7
R/W
05
469
-01
1
Figure 22. Bus Data Transfer
DATA
A(S)
S SLAVE ADDR A(S)
SUB ADDR
A(S)
LSB = 0
LSB = 1
DATA
P
S SLAVE ADDR A(S)
SUB ADDR A(S) S SLAVE ADDR
A(S)
DATA
A(M)
DATA
P
WRITE
SEQUENCE
READ
SEQUENCE
A(S) = NO ACKNOWLEDGE BY SLAVE
A(M) = NO ACKNOWLEDGE BY MASTER
A(S) = ACKNOWLEDGE BY SLAVE
A(M) = ACKNOWLEDGE BY MASTER
S = START BIT
P = STOP BIT
A(S)
A(M)
05
46
9-
0
12
Figure 23. Write and Read Sequences
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相关代理商/技术参数 |
参数描述 |
|---|---|
| EVAL-AD7751EB | 制造商:AD 制造商全称:Analog Devices 功能描述:Energy Metering IC With On-Chip Fault Detection |
| EVAL-AD7755EB | 制造商:AD 制造商全称:Analog Devices 功能描述:Energy Metering IC with Pulse Output |
| EVAL-AD7760EB | 制造商:Analog Devices 功能描述:EVALUATION BOARD ((NS)) |
| EVAL-AD7760EBZ | 制造商:Analog Devices 功能描述:EVALUATION BOARD FOR AD7760/AD7762/AD7763 USING EVAL-CED1Z 制造商:Analog Devices 功能描述:EVALUATION BOARD - Bulk |
| EVAL-AD7760EDZ | 功能描述:BOARD EVAL CONTROL AD7760 RoHS:是 类别:编程器，开发系统 >> 评估板 - 模数转换器 (ADC) 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:- ADC 的数量:1 位数:12 采样率（每秒）:94.4k 数据接口:USB 输入范围:±VREF/2 在以下条件下的电源（标准）:- 工作温度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板，软件 |
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