TLC5905 Datasheet, PDF (25/27 Pages) Texas Instruments – LED DRIVER

XLATCH
BLANK
GSCLK
tsu(XLATCH–GSCLK)
tsu(BLANK–GSCLK)
1/f(WDT)
WDTRG
tw(l)(WDTRG)
OUT0
OUT1
tw(h)(WDTRG)
td(BLANK–OUT0)
td(OUTn+1–OUTn)
OFF
OFF
td(GSCLK–OUT0)
ON (see Note A)
ON (see Note A)
OUT.1..5...
......
OFF
ON (see Note A)
td(BLANK–OUT0)
1/f(GSCLK)
tw(l)(GSCLK)
tw(h)(GSCLK)
td(GSCLK–OUT0)
OFF
(see
Note A)
td(OUTn+1–OUTn)
OFF
(see
Note A)
tw(dt)
OFF
(see
Note A)
OFF
(see
Note A)
O...F..F.
(see
Note A)
....O..FF
(see
Note A)
XDOWN1
HI–Z
XDOWN2
BOUT
td(GSCLK–XDOWN2)
td(BLANK–BOUT)
td(GSCLK–GSOUT)
(see NoteB)
(see NoteB)
GSOUT
NOTES: A. ON or OFF, or ON time is varied dpend on the gray scale data and BLANK.
B. LED disconnection
Figure 12. Timing Diagram (Constant Current Output)