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| 型號： | S1C6S460D |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 4-BIT, MROM, 2 MHz, MICROCONTROLLER, UUC124 |
| 封裝： | 4.69 X 4.68 MM, DIE-124 |
| 文件頁數(shù)： | 26/107頁 |
| 文件大小： | 788K |
| 代理商： | S1C6S460D |
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S1C6S460 TECHNICAL MANUAL
EPSON
17
CHAPTER 3: POWER SOURCE
SVDON (F73H [D2], R/W)
Turns the SVD circuit ON and OFF.
When "1" is written: SVD circuit ON
When "0" is written: SVD circuit OFF
Reading: Valid
By writing "1" to the SVDON, the SVD circuit is turned ON, and determination of supply voltage is
initiated. Likewise, by writing "0", it is turned OFF.
At initial reset, it is set to "0" (OFF).
Note: The SVD circuit should normally be turned OFF as the consumption current of the IC becomes
large when it is ON.
SVDDT (F73H [D3], R)
This is the result of supply voltage determination.
When "0" is read: Criteria voltage
≤ Source voltage (VDD–VSS)
When "1" is read: Criteria voltage > Source voltage (VDD–VSS)
Writing: Invalid
If the SVD circuit is ON, when the voltage of the battery is detected to be lower than the criteria voltage
set at SVC0 and SVC1, SVDDT is "1". If it is more than the criteria voltage, it is "0".
The SVDDT reading is valid when SVDON is "1" and is always "1" when SVDON is "0".
Note: To obtain a stable detection result, after setting SVDON to "1", provide at least 100 s waiting time
before performing SVDDT reading.
3.2.3 Programming notes
(1) The SVD circuit should normally be turned OFF (SVDON = "0") as the consumption current of the IC
becomes large when it is ON (SVDON = "1").
(2) To obtain a stable detection result, after setting SVDON to "1", provide at least 100 s waiting time
before performing SVDDT reading.
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