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參數資料
| 型號： | TSC2300IPAGRG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| 封裝： | GREEN, PLASTIC, TQFP-64 |
| 文件頁數： | 50/83頁 |
| 文件大小： | 1268K |
| 代理商： | TSC2300IPAGRG4 |
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Auxiliary Input 2
Start Clock
Turn off clock
Convert Auxiliary
Input 2
Store Auxiliary Input
Set /DAV = 0
Power up ADC
Power Down
Reference
Is Data
Avereraging
Done
N
Y
Power Down ADC
DONE
Host Writes A/D
Converter Control
Register
Power Up Reference
(Including Delay)
2 in AUX2 Register
t
coordinate +
7.5 ms ) tREF ) 4NAVG NBITS
1
conv )
4.4 ms
(10)
TSC2300
SLAS372 — NOVEMBER 2002
Figure 68. AUX2 Measurement Process
OPERATION - PORT SCAN
If measurements of all the battery and auxiliary inputs are required, the port scan mode can be used. This mode
causes the TSC2300 to sample and convert both battery inputs and both auxiliary inputs. At the end of this cycle, the
battery and auxiliary data registers contain the updated values, and the DAV pin is asserted low, signaling the host to
read the data. Thus, with one write to the TSC2300, the host can cause four different measurements to be made.
Because the battery and auxiliary data registers are consecutive in memory, all four registers can be read in one SPI
transaction, as described in Figure 50.
The flowchart for this process is shown in Figure 69. The time needed to make a complete port scan is given by:
54
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