LP3950 Datasheet, PDF (7/31 Pages) National Semiconductor (TI) – Color LED Driver with Audio Synchronizer

Modes of Operation (Continued)
20129306
Logic Interface Characteristics
(1.80V ≤ V_DDIO ≤ V_DD1,2V). Limits in standard typeface are for T_J = +25˚C. Limits in boldface type apply over the operating
ambient temperature range (−40˚C ≤ T_A ≤ +85˚C).
Symbol
Parameter
Conditions
Min
Typ
Max
Units
LOGIC INPUTS SS, SI, SCK/SCL, PWM_LED, IF_SEL
V_IL
Input Low Level
V_IH
Input High Level
I_I
Logic Input Current
f_SCL
Clock Frequency
I²C Mode
SPI Mode
V_DDIO − 0.5
−1.0
0.5
V
V
1.0
µA
400
kHz
8
MHz
LOGIC OUTPUT SO
V_OL
Output Low Level
V_OH
Output High Level
I_L
Output Leakage Current
LOGIC I/O SDA
I_SO = 3.0 mA
I_SO = −3.0 mA
V_SO = 2.8V
0.3
0.5
V
V_DDIO − 0.5
V_DDIO − 0.3
V
1.0
µA
V_OL
Output Low Level
I_SDA = 3.0 mA
LOGIC INPUTS DME, AMODE (Internal pull down 1 MΩ)
0.3
0.5
V
V_IL
Input Low Level
V_IH
Input High Level
V_DDIO − 0.5
0.5
V
V
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