参数资料
型号: TLC2574IPWR
厂商: TEXAS INSTRUMENTS INC
元件分类: ADC
英文描述: 4-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20
封装: GREEN, PLASTIC, TSSOP-20
文件页数: 19/48页
文件大小: 1092K
代理商: TLC2574IPWR
TLC3574, TLC3578, TLC2574, TLC2578
5V ANALOG, 3/5V DIGITAL, 14/12BIT, 200KSPS, 4/8CHANNEL
SERIAL ANALOGTODIGITAL CONVERTERS WITH ±10V INPUTS
SLAS262C OCTOBER 2000 REVISED MAY 2003
26
WWW.TI.COM
operation cycle timing (continued)
After the operation finished, the host has several choices. Table 3 summarizes of operation options.
Table 3. Operation Options
MODE
CONVERSION IS INITIATED BY
MODE
CS
FS
CSTART
00
1. Issue new Select/Read operation to
read data and start new conversion.
2. Reconfigure the device.
1. Issue new Select/Read operation to
read data and start new conversion.
2. Reconfigure the device.
1. Issue new CSTART to start next
conversion; old data lost.
2. Issue new Select/Read operation to
read data—Issue new CSTART to
start new conversion.
3. Reconfigure the device.
01
1. Read FIFO—Select Channel—Start
new conversion. Channel must be
selected after FIFO READ.
2. Select Channel—Start new
conversion (old data lost)
3. Configure device again.
1. Read FIFO—Select Channel—Start
new conversion. Channel must be
selected after FIFO READ.
2. Select Channel—Start new
conversion (old data lost)
3. Configure device again.
1. Read FIFO—Select channel—Start
new conversion. Channel must be
selected after FIFO READ.
2. Start new conversion (old data lost)
with existing setting.
3. Configure device again.
10
1. Read FIFO—Start new conversion
with existing setting.
2. Configure device—New conversion
(old data lost)
1. Read FIFO—Start new conversion
with existing setting.
2. Configure device—New conversion
(old data lost)
1. Read FIFO—Arm Period—Start new
conversion with existing setting
2. Configure device—Arm Period—New
conversion (old data lost)
11
1. Read FIFO—Start new conversion
with existing setting.
2. Start new conversion with the existing
setting.
3. Configure device—Start new
conversion with new setting.
1. Read FIFO—Start new conversion
with existing setting
2. Start new conversion with the existing
setting.
3. Configure Device—Start new
conversion with new setting.
1. Read FIFO—Arm Period—Start new
Conversion with existing setting
2. Start new conversion with existing
setting. (old data lost)
3. Configure device—Arm Period—New
conversion with new setting.
operation timing diagrams
The nonconversion operation includes FIFO READ and WRITE CFR. Both do not perform a conversion. The
conversion operation performs one of four types of conversion: mode 00, 01, 10 and 11
write cycle (WRITE CFR Command): Write cycle does not generate EOC or INT, nor does it carry out any
conversion.
1
2
3
5
4
6
7
13
14
15
16
1
ID15
1D14
ID13 1D12
12
ID15
ID11
ID10
ID9
ID4
ID3
ID2
ID1
ID0
OR
CS
FS
SDI
INT
EOC
SDO
Hi-Z
The dotted lines means signal may or may not exist.
Don’t care
Figure 8. Write Cycle, FS Initiates Operation
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