BLANK |
36 |
I |
Blank all outputs. BLANK low forces all channels off. Grayscale counter resets, grayscale PWM timing controller is initialized. BLANK high starts grayscale PWM timing controller, channels are controlled by PWM timing controller. |
ERR |
20 |
O |
Open-drain error feedback |
GCLK |
4, 5, 6 |
I |
Clock input for grayscale PWM counter. The 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 |
OUTB0–OUTB7 |
9, 12, 15, 18, 21, 24, 27, 30 |
O |
Constant-current outputs for color group B |
OUTG0–OUTG7 |
7, 10, 13,16, 23, 26, 29, 32 |
O |
Constant-current outputs for color group G |
OUTR0–OUTR7 |
8, 11, 14,17, 22, 25, 28, 31 |
O |
Constant-current outputs for color group R |
SCK |
2 |
I |
Data-shift clock-input pin |
SDI |
1 |
I |
Serial data-in pin |
SDO |
19 |
O |
Serial data-out pin |
SENSE |
38 |
I |
Connect to LED supply for LED diagnostics |
VCC |
35 |
I |
Power supply pin |
Thermal pad |
— |
— |
Connect to ground to improve thermal performance |