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TLC5940-EP Datasheet, PDF (9/33 Pages) Texas Instruments – 16-CHANNEL LED DRIVER WITH DOT CORRECTION AND GRAYSCALE PWM CONTROL
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TLC5940-EP
www.ti.com
TERMINAL
NAME
NO.
PWP RHB
BLANK
2
31
DCPRG 26
25
GND
GSCLK
IREF
NC
OUT0
OUT1
OUT2
OUT3
OUT4
OUT5
OUT6
OUT7
OUT8
OUT9
OUT10
OUT11
OUT12
OUT13
OUT14
OUT15
SCLK
SIN
SOUT
VCC
1
30
25
24
27
26
–
12, 13,
28, 29
7
4
8
5
9
6
10
7
11
8
12
9
13
10
14
11
15
14
16
15
17
16
18
17
19
18
20
19
21
20
22
21
4
1
5
2
24
23
28
27
VPRG
6
3
XERR
23
22
XLAT
3
32
TERMINAL FUNCTION
SLVSA51D – MARCH 2010 – REVISED MAY 2010
I/O
DESCRIPTION
I
Blank all outputs. When BLANK = H, all OUTn outputs are forced OFF. GS counter is also reset.
When BLANK = L, OUTn are controlled by grayscale PWM control.
Switch DC data input. When DCPRG = L, DC is connected to EEPROM. When DCPRG = H, DC is
I connected to the DC register.
DCPRG also controls EEPROM writing, when VPRG = V(PRG). EEPROM data = 3Fh (default)
G Ground
I Reference clock for grayscale PWM control
I Reference current terminal
No connection
O Constant current output
O Constant current output
O Constant current output
O Constant current output
O Constant current output
O Constant current output
O Constant current output
O Constant current output
O Constant current output
O Constant current output
O Constant current output
O Constant current output
O Constant current output
O Constant current output
O Constant current output
O Constant current output
I Serial data shift clock
I Serial data input
O Serial data output
I Power supply voltage
Multifunction input pin. When VPRG = GND, the device is in GS mode. When VPRG = VCC, the
I device is in DC mode. When VPRG = V(VPRG), DC register data can programmed into DC EEPROM
with DCPRG=HIGH. EEPROM data = 3Fh (default)
O Error output. XERR is an open-drain terminal. XERR goes L when LOD or TEF is detected.
Level triggered latch signal. When XLAT = high, the TLC5940 writes data from the input shift register
I to either GS register (VPRG = low) or DC register (VPRG = high). When XLAT = low, the data in GS
or DC register is held constant.
Copyright © 2010, Texas Instruments Incorporated
Product Folder Link(s): TLC5940-EP
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