TLC5926-Q1 Datasheet, PDF (4/27 Pages) Texas Instruments – 16-CHANNEL CONSTANT-CURRENT LED SINK DRIVERS

TLC5926-Q1
TLC5927-Q1
SLVS973 – SEPTEMBER 2009 ......................................................................................................................................................................................... www.ti.com
Timing Diagrams
CLK
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
OE(ED2) 1
LE(ED1) ₀
SDI
off
OUT0
on
off
OUT1
on
off
OUT2
on
off
OUT3
on
off
OUT15
on
SDO
Don't care
Figure 1. Normal Mode
Table 3. Truth Table in Normal Mode
CLK
↑
↑
↑
↓
↓
LE(ED1)
H
L
H
X
X
OE(ED2)
L
L
L
L
H
SDI
Dn
Dn + 1
Dn + 2
Dn + 3
Dn + 3
OUT0...OUT15
Dn...Dn – 7...Dn – 15
No change
Dn + 2...Dn – 5...Dn – 13
Dn + 2...Dn – 5...Dn – 13
off
SDO
Dn – 15
Dn – 14
Dn – 13
Dn – 13
Dn – 13
The signal sequence shown in Figure 2 makes the TLC5926/TLC5927 enter Current Adjust and Error Detection
mode.
1
2
3
4
5
CLK
OE(ED2) ¹
0
1
1
1
LE(ED1) ⁰
0
0
1
0
Figure 2. Switching to Special Mode
4
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Product Folder Link(s): TLC5926-Q1 TLC5927-Q1