BLANK |
36 |
I |
Blank all outputs. BLANK low forces all channels off. The grayscale counter resets and the grayscale PWM timing controller is initialized. BLANK high starts the grayscale PWM timing controller. Channels are controlled by the PWM timing controller. |
ERR |
20 |
O |
Open-drain error feedback |
GCLK |
4, 5, 6 |
I |
Clock input for the grayscale PWM counter, three pins are internally connected together |
GND |
33 |
— |
Power ground |
IREF |
34 |
I |
Reference-current pin for setting the full-scale output current |
LATCH |
3 |
I |
Latch-enable input pin |
NC |
37 |
— |
No internal connection |
NU |
7, 10, 13,16, 23, 26, 29, 32 |
— |
Not used, keep floating |
OUTB0–OUTB7 |
9, 12, 15, 18, 21, 24, 27, 30 |
O |
Constant-current outputs for group B |
OUTR0–OUTR7 |
8, 11, 14,17, 22, 25, 28, 31 |
O |
Constant-current outputs for group R |
SCK |
2 |
I |
Input pin for the data-shift clock |
SDI |
1 |
I |
Serial data-in pin |
SDO |
19 |
O |
Serial data-out pin |
SENSE |
38 |
I |
LED supply sensing pin |
VCC |
35 |
I |
Power supply pin |
Thermal pad |
— |
— |
Connect to ground to improve thermal performance |