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ADS7828E2K5 参数 Datasheet PDF下载

ADS7828E2K5图片预览
型号: ADS7828E2K5
PDF下载: 下载PDF文件 查看货源
内容描述: 12位, 8通道采样模拟数字转换器,带有I2C接口 [12-Bit, 8-Channel Sampling ANALOG-TO-DIGITAL CONVERTER with I2C Interface]
分类和应用: 转换器
文件页数/大小: 22 页 / 860 K
品牌: TI [ TEXAS INSTRUMENTS ]
 浏览型号ADS7828E2K5的Datasheet PDF文件第9页浏览型号ADS7828E2K5的Datasheet PDF文件第10页浏览型号ADS7828E2K5的Datasheet PDF文件第11页浏览型号ADS7828E2K5的Datasheet PDF文件第12页浏览型号ADS7828E2K5的Datasheet PDF文件第14页浏览型号ADS7828E2K5的Datasheet PDF文件第15页浏览型号ADS7828E2K5的Datasheet PDF文件第16页浏览型号ADS7828E2K5的Datasheet PDF文件第17页  
READING IN HS MODE  
See Figure 4 for a typical read sequence for HS mode.  
Included in the read sequence is the shift from F/S to HS  
modes. It may be desirable to remain in HS mode after  
reading a conversion; to do this, issue a repeated START  
instead of a STOP at the end of the read sequence, since a  
STOP causes the part to return to F/S mode.  
High Speed (HS) mode is fast enough that codes can be  
read out one at a time. In HS mode, there is not enough time  
for a single conversion to complete between the reception of  
a repeated START condition and the read-addressing byte,  
so the ADS7828 stretches the clock after the read-address-  
ing byte has been fully received, holding it LOW until the  
conversion is complete.  
F/S Mode  
S
0
0
0
0
1
X
X
X
N
HS Mode Master Code  
HS Mode Enabled  
ADC Power-Down Mode  
ADC Sampling Mode  
Sr  
1
0
0
1
0
A
A
W
A
SD  
C
C
C
PD PD X  
0
X
A
1
0
2
1
0
1
Write-Addressing Byte  
Command Byte  
HS Mode Enabled  
ADC Converting Mode  
SCLH(2) is stretched LOW waiting for data conversion  
Sr  
1
0
0
1
0
A
A
R
A
1
0
Read-Addressing Byte  
Return to F/S Mode(1)  
HS Mode Enabled  
ADC Power-Down Mode  
(depending on power-down selection bits)  
0
0
0
0
D
D
D
D
A
D
D
.D  
D
0
N
P
11 10  
9
8
7
6 . .  
1
2 x (8 Bits + ack/not-ack)  
A = acknowledge (SDA LOW)  
N = not acknowledge (SDA HIGH)  
S = START Condition  
P = STOP Condition  
Sr = repeated START condition  
W = '0' (WRITE)  
R = '1' (READ)  
From Master to Slave  
From Slave to Master  
NOTES: (1) To remain in HS mode, use repeated START instead of STOP.  
(2) SCLH is SCL in HS mode.  
FIGURE 4. Typical Read Sequence in HS Mode.  
ADS7828  
SBAS181C  
13  
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