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Timing Diagram

1

2

3

0

4

6

7

5

0

1

off

on

off

on

off

on

off

on

off

on

Don't care

CLK

OE(ED2)

LE(ED1)

SDI

OUT0

OUT1

OUT2

OUT3

OUT7

SDO

1

2

3

4

5

1

0

1

1

1

1

0

0

0

0

CLK

OE(ED2)

LE(ED1)

TLC5916, TLC5917

8-BIT CONSTANT-CURRENT LED SINK DRIVERS

SLVS695A – JUNE 2007 – REVISED MARCH 2008

Figure 1. Normal Mode

Truth Table in Normal Mode

CLK

LE(ED1)

OE(ED2)

SDI

OUT0...OUT7

SDO

↑

H

L

Dn

Dn...Dn – 7

Dn – 7

↑

L

L

Dn + 1

No change

Dn – 6

↑

H

L

Dn + 2

Dn + 2...Dn – 5

Dn – 5

↓

X

L

Dn + 3

Dn + 2...Dn – 5

Dn – 5

↓

X

H

Dn + 3

Off

Dn – 5

The signal sequence shown in Figure 2 makes the TLC5916/TLC5917 enter Current Adjust and Error Detection

Mode.

Figure 2. Switching to Special Mode

4

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Product Folder Link(s): TLC5916 TLC5917