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參數(shù)資料
| 型號： | SC623ULTRT |
| 廠商： | Semtech Corporation |
| 英文描述： | LED Light Management Unit Charge Pump, 4 LEDs, 400mA Flash LED, and SemWireTM Interface |
| 中文描述： | LED燈管理股電荷泵，4個LED，400mA的閃光LED，并SemWireTM接口 |
| 文件頁數(shù)： | 5/21頁 |
| 文件大?。?/td> | 287K |
| 代理商： | SC623ULTRT |
SC623
5
Electrical Characteristics (continued)
Parameter
Symbol
Conditions
Min
Typ
Max
Units
Digital I/O Electrical Specifications (FLEN, SWIF)
Input High Threshold
V
IH
V
IN
= 5.5V
1.6
V
Input Low Threshold
V
IL
V
IN
= 3.0V
0.4
V
Input High Current
I
IH
V
IN
= 5.5V
-1
+1
μA
Input Low Current
I
IL
V
IN
= 5.5V
-1
+1
μA
SemWire Bit Rate
f
SWIF
10
75
kbit/s
SemWire Start-up Time
(5)
t
EN
1
ms
SemWire Disable Time
(6)
t
DIS
10
ms
SemWire Data Latch Delay
(7)
D
DL
5
bit
Notes:
(1) ΔV
F
(2) Once tripped, flash output will remain disabled until FLEN pin is cycled or reset via serial interface.
(3) Current matching equals ± [I
BL(MAX)
- I
BL(MIN
] / [I
BL(MAX)
+ I
BL(MIN)
].
(4) Test voltage is V
OUT
= 4.0V — a relatively extreme LED voltage — to force a transition during test. Typically V
OUT
= 3.2V for white LEDs.
(5) The SemWire start-up time is the minimum period that the SWIF pin must be held high to enable the part before commencing
communication.
(6) The SemWire disable time is the minimum period that the SWIF pin must be pulled low to shut the part down.
(7) The SemWire data latch delay is the maximum duration after communication has ended before the register is updated.
is the voltage difference between any two LEDs.
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