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TLC5940 Datasheet, PDF (7/29 Pages) Texas Instruments – 16 CHANNEL LED DRIVER WITH DOT CORRECTION AND GRAYSCALE PWM CONTROL
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TLC5940
www.ti.com
SLVS515A – DECEMBER 2004 – REVISED AUGUST 2005
DEVICE INFORMATION (continued)
TERMINAL FUNCTION
NAME
BLANK
DCPRG
GND
GSCLK
IREF
NC
OUT0
OUT1
OUT2
OUT3
OUT4
OUT5
OUT6
OUT7
OUT8
OUT9
OUT10
OUT11
OUT12
OUT13
OUT14
OUT15
SCLK
SIN
SOUT
VCC
VPRG
XERR
XLAT
TERMINAL
NO.
DIP PWP
RHB
23
2
31
19 26
25
22
1
30
18 25
24
20 27
26
–
–
12, 13,
28, 29
28
7
4
1
8
5
2
9
6
3
10
7
4
11
8
5
12
9
6
13
10
7
14
11
8
15
14
9
16
15
10 17
16
11 18
17
12 19
18
13 20
19
14 21
20
15 22
21
25
4
1
26
5
2
17 24
23
21 28
27
27
6
3
16 23
22
24
3
32
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,
I DC is connected to the DC register.
DCPRG is also controls EEPROM writing, when VPRG = V(PRG)
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(PRG), DC register data can programmed into DC
EEPROM with DCPRG=HIGH.
O Error output. XERR is an open-drain terminal. XERR goes L when LOD or TEF is detected.
I
Data latch. Note that the internal connections are switched by VPRG. At XLAT↑ (VPRG =
GND), GS register gets new data. At XLAT↑ (VPRG = VCC), DC register gets new data.
7
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