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| 型號： | LC75700T-MPB-E |
| 廠商： | ON Semiconductor |
| 文件頁數(shù)： | 8/16頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC KEY SCANNING LSI 20TSSOP |
| 標準包裝： | 70 |
| 系列： | * |
LC75700T
PS No.7632-16/16
(3) Explanation
In this technique, the controller uses interrupts to determine key on/off states and read the key data. The controller
must check the DO state when CE is low. If DO is low, the controller recognizes that a key has been pressed and
executes the key data read operation. After that the next key on/off determination is performed after the time t8 has
elapsed by checking the DO state when CE is low and reading the key data.
The period t8 in this technique must satisfy the following condition.
t8 > t4
If a key data read operation is executed when DO is high, the read key data (KD1 to KD30) will be invalid.
Package Dimensions
unit : mm
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TSSOP20 4.4x6.5 / TSSOP20 (225 mil)
CASE 948AX
ISSUE A
XXXXXXXXXX
YMDDD
XXXXX = Specific Device Code
Y = Year
M = Month
DDD = Additional Traceability Data
GENERIC
MARKING DIAGRAM*
*This information is generic. Please refer to
device data sheet for actual part marking.
SOLDERING FOOTPRINT*
NOTE: The measurements are not to guarantee but for reference only.
(Unit: mm)
*For additional information on our PbFree strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
1.0
5.80
0.32
0.65
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