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TLC59116
SLDS157E – FEBRUARY 2008 – REVISED DECEMBER 2014
TLC59116 16-Channel FM+ I2C-Bus Constant-Current LED Sink Driver
1
1 Features
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Supports Hot Insertion
Low Standby Current
3.3-V or 5-V Supply Voltage
5.5-V Tolerant Inputs
Offered in 28-Pin Thin Shrink Small-Outline
Package (TSSOP) (PW) and 32-Pin Quad
Flatpack No Lead (QFN)
–40 °C to 85 °C Operation
•
2 Applications
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Gaming
Small Signage
Industrial Equipment
3 Description
The TLC59116 is an I2C bus controlled 16-channel
LED driver that is optimized for red/green/blue/amber
(RGBA) color mixing and backlight application. Each
LED output has its own 8-bit resolution (256 steps)
fixed-frequency individual PWM controller that
operates at 97 kHz, with a duty cycle that is
adjustable from 0% to 99.6%.
Device Information(1)
PART NUMBER
TLC59116
PACKAGE
BODY SIZE (NOM)
TSSOP (28)
9.70 mm × 4.40 mm
VQFN (32)
5.00 mm × 5.00 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
TLC59116 Typical Application
+5V
IN
SHDN
GND
+3.3V
SENSE
OUT
...
+3.3V
SCL
SCL
VDD
SDA
SDA
OUT15
RESET
RESET
A0-A3
OUT14
TLC59116
OUT13
...
•
•
16 LED Drivers (Each Output Programmable at
Off, On, Programmable LED Brightness, or
Programmable Group Dimming and Blinking
Mixed With Individual LED Brightness)
16 Constant-Current Output Channels
256-Step (8-Bit) Linear Programmable Brightness
Per LED Output Varying From Fully Off (Default)
to Maximum Brightness Using a 97-kHz PWM
Signal
256-Step Group Brightness Control Allows
General Dimming [Using a 190-Hz PWM Signal
From Fully Off to Maximum Brightness (Default)]
256-Step Group Blinking With Frequency
Programmable From 24 Hz to 10.73 s and Duty
Cycle From 0% to 99.6%
Four Hardware Address Pins Allow 14 TLC59116
Devices to Be Connected to Same I2C Bus
Four Software-Programmable I2C Bus Addresses
(One LED Group Call Address and Three LED
Sub Call Addresses) Allow Groups of Devices to
Be Addressed at Same Time in Any Combination
Software Reset Feature (SWRST Call) Allows
Device to Be Reset Through I2C Bus
Up to 14 Possible Hardware-Adjustable Individual
I2C Bus Addresses Per Device, So That Each
Device Can Be Programmed
Open-Load and Overtemperature Detection Mode
to Detect Individual LED Errors
Output State Change Programmable on
Acknowledge or Stop Command to Update
Outputs Byte-by-Byte or All at Same Time (Default
to Change on Stop)
Output Current Adjusted Through an External
Resistor
Constant Output Current Range: 5 mA to 120 mA
Maximum Output Voltage: 17 V
25-MHz Internal Oscillator Requires No External
Components
1-MHz Fast-mode Plus (FMT) Compatible I2C Bus
Interface With 30-mA High-Drive Capability on
SDA Output for Driving High-Capacitive Buses
Internal Power-On Reset
Noise Filter on SCL and SDA Inputs
No Glitch on Power-Up
Active-Low Reset
MCU
•
OUT1
OUT0
R-EXT
GND
REXT
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
TLC59116
SLDS157E – FEBRUARY 2008 – REVISED DECEMBER 2014
www.ti.com
Table of Contents
1
2
3
4
5
6
7
8
9
Features ..................................................................
Applications ...........................................................
Description .............................................................
Revision History.....................................................
Description (continued).........................................
Pin Configuration and Functions .........................
Specifications.........................................................
1
1
1
2
3
4
6
7.1
7.2
7.3
7.4
7.5
7.6
7.7
6
6
6
6
7
8
9
Absolute Maximum Ratings ......................................
Handling Ratings.......................................................
Recommended Operating Conditions ......................
Thermal Information ..................................................
Electrical Characteristics...........................................
Timing Requirements ................................................
Typical Characteristics ..............................................
Parameter Measurement Information ................ 10
Detailed Description ............................................ 12
9.1 Overview ................................................................. 12
9.2
9.3
9.4
9.5
Functional Block Diagram .......................................
Feature Description.................................................
Device Functional Modes........................................
Register Maps .........................................................
12
12
15
15
10 Application and Implementation........................ 23
10.1 Application Information.......................................... 23
10.2 Typical Application ................................................ 28
11 Power Supply Recommendations ..................... 30
12 Layout................................................................... 30
12.1 Layout Guidelines ................................................. 30
12.2 Layout Example .................................................... 30
12.3 Thermal Considerations ........................................ 31
13 Device and Documentation Support ................. 32
13.1 Trademarks ........................................................... 32
13.2 Electrostatic Discharge Caution ............................ 32
13.3 Glossary ................................................................ 32
14 Mechanical, Packaging, and Orderable
Information ........................................................... 32
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision D (June 2011) to Revision E
•
Page
Added Pin Configuration and Functions section, ESD Ratings table, Feature Description section, Device Functional
Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device
and Documentation Support section, and Mechanical, Packaging, and Orderable Information section .............................. 1
Changes from Revision C (June 2010) to Revision D
Page
•
Added Output Current vs Output Voltage Figure. .................................................................................................................. 9
•
Changed "SLEEP" to "OSC" in Mode Register 1 (MODE1) Table....................................................................................... 16
•
Added Bits 6 and 4 to the Mode Register 2 Bit Description Table. ...................................................................................... 16
•
Changed VALUES column in the Mode Register 2 Bit Description Table. .......................................................................... 16
2
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5 Description (continued)
The individual PWM controller allows each LED to be set to a specific brightness value. An additional 8-bit
resolution (256 steps) group PWM controller has both a fixed frequency of 190 Hz and an adjustable frequency
between 24 Hz to once every 10.73 seconds, with a duty cycle that is adjustable from 0% to 99.6%. The group
PWM controller dims or blinks all LEDs with the same value.
Each LED output can be off, on (no PWM control), or set at its individual PWM controller value at both individual
and group PWM controller values.
The TLC59116 operates with a supply voltage range of 3 V to 5.5 V and the outputs are 17 V tolerant. LEDs can
be directly connected to the TLC59116 device outputs.
Software programmable LED Group and three Sub Call I2C-bus addresses allow all or defined groups of
TLC59116 devices to respond to a common I2C-bus address, allowing for example, all the same color LEDs to
be turned on or off at the same time or marquee chasing effect, thus minimizing I2C-bus commands.
Four hardware address pins allow up to 14 devices on the same bus.
The Software Reset (SWRST) Call allows the master to perform a reset of the TLC59116 through the I2C-bus,
identical to the Power-On Reset (POR) that initializes the registers to their default state causing the outputs to be
set high (LED off). This allows an easy and quick way to reconfigure all device registers to the same condition.
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TLC59116
SLDS157E – FEBRUARY 2008 – REVISED DECEMBER 2014
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6 Pin Configuration and Functions
PW PACKAGE
(TOP VIEW)
REXT
A0
A1
A2
A3
OUT0
OUT1
OUT2
OUT3
GND
OUT4
OUT5
OUT6
OUT7
VCC
SDA
SCL
RESET
GND
OUT15
OUT14
OUT13
OUT12
GND
OUT11
OUT10
OUT9
OUT8
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
32
1
31
29 28
SCL
VCC
27
SDA
NC
REXT
30
NC
A1
A2
A0
RHB PACKAGE
(TOP VIEW)
26 25
24
RESET
A3
2
23
22
OUT15
21
OUT14
20
OUT13
OUT0
3
OUT1
4
OUT2
5
OUT3
6
19
GND
7
18
OUT4
8
14
OUT8
OUT9
OUT12
GND
OUT11
OUT10
12 13
NC
11
NC
OUT6
OUT5
9 10
17
15 16
OUT7
Exposed
Thermal Pad
GND
NC - No internal connection
If used, the exposed thermal pad must be connected as a secondary ground.
Pin Functions
PIN
NAME
I/O (1)
DESCRIPTION
PW NO.
RHB NO.
REXT
1
30
I
Input terminal used to connect an external resistor for setting up all output currents
A0
2
31
I
Address input 0
A1
3
32
I
Address input 1
A2
4
1
I
Address input 2
A3
5
2
I
Address input 3
OUT0
6
3
O
Constant current output 0
OUT1
7
4
O
Constant current output 1
OUT2
8
5
O
Constant current output 2
OUT3
9
6
O
Constant current output 3
GND
10
7
(1)
4
Ground
I = input, O = output
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Pin Functions (continued)
PIN
NAME
I/O (1)
DESCRIPTION
PW NO.
RHB NO.
OUT4
11
8
O
Constant current output 4
OUT5
12
9
O
Constant current output 5
OUT6
13
10
O
Constant current output 6
OUT7
14
11
O
Constant current output 7
OUT8
15
14
O
Constant current output 8
OUT9
16
15
O
Constant current output 9
OUT10
17
16
O
Constant current output 10
OUT11
18
17
O
Constant current output 11
GND
19
18
OUT12
20
19
O
Constant current output 12
OUT13
21
20
O
Constant current output 13
OUT14
22
21
O
Constant current output 14
OUT15
23
22
O
Constant current output 15
GND
24
23
RESET
25
24
I
Active-low reset input
SCL
26
25
I
Serial clock input
SDA
27
26
I/O
Serial data input/output
VCC
28
27
—
Power supply
—
12, 13,
28, 29
—
No internal connection
NC
Ground
Ground
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SLDS157E – FEBRUARY 2008 – REVISED DECEMBER 2014
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7 Specifications
7.1 Absolute Maximum Ratings
over operating free-air temperature (unless otherwise noted) (1)
MIN
MAX
UNIT
0
7
V
V
VCC Supply voltage
VI
Input voltage
–0.4
VCC + 0.4
VO
Output voltage
–0.5
20
V
IO
Output current per channel
120
mA
TJ
Junction temperature
150
°C
(1)
–40
Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings
only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended
Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
7.2 Handling Ratings
MIN
Tstg
Storage temperature range
V(ESD)
(1)
(2)
Electrostatic discharge
MAX
UNIT
150
°C
–55
Human body model (HBM), per ANSI/ESDA/JEDEC JS-001, all
pins (1)
1500
Charged device model (CDM), per JEDEC specification
JESD22-C101, all pins (2)
500
V
JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.
7.3 Recommended Operating Conditions
All unused inputs of the device must be held at VCC or GND to ensure proper device operation
MIN
MAX
3
5.5
V
SCL, SDA, RESET, A0, A1, A2, A3
0.7 × VCC
VCC
V
Low-level input voltage
SCL, SDA, RESET, A0, A1, A2, A3
0
0.3 × VCC
V
Supply voltage to output pins
OUT0 to OUT15
17
V
VCC
Supply voltage
VIH
High-level input voltage
VIL
VO
IOL
Low-level output current sink
SDA
IO
Output current per channel
OUT0 to OUT15
TA
Operating free-air temperature
VCC = 3 V
20
VCC = 5 V
30
UNIT
mA
5
120
mA
–40
85
°C
7.4 Thermal Information
TLC59116
THERMAL METRIC (1)
PW
RHB
28 PINS
32 PINS
78
34.3
18.8
26.3
RθJA
Junction-to-ambient thermal resistance
RθJC(top)
Junction-to-case (top) thermal resistance
RθJB
Junction-to-board thermal resistance
36
8.3
ψJT
Junction-to-top characterization parameter
0.5
0.4
ψJB
Junction-to-board characterization parameter
35.5
8.2
RθJC(bot)
Junction-to-case (bottom) thermal resistance
n/a
3.3
(1)
6
UNIT
°C/W
For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
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7.5 Electrical Characteristics
VCC = 3 V to 5.5 V, TA = –40 °C to 85 °C (unless otherwise noted)
PARAMETER
II
VPOR
TEST CONDITIONS
Input / output leakage
current
SCL, SDA, A0,
A1, A2, A3,
RESET
Output leakage current
OUT0 to OUT15 VO = 17 V, TJ = 25°C
MIN
TYP (1)
VI = VCC or GND
Power-on reset voltage
MAX
UNIT
±0.3
μA
0.5
μA
2.5
VCC = 3 V, VOL = 0.4 V
20
VCC = 5 V, VOL = 0.4 V
30
V
IOL
Low-level output current
SDA
IO(1)
Output current 1
OUT0 to OUT15 VO = 0.6 V, Rext = 720 Ω, CG = 0.992 (2)
Output current error
OUT0 to OUT15
IO = 26 mA, VO = 0.6 V, Rext = 720 Ω,
TJ = 25°C
±8%
Output channel to
channel current error
OUT0 to OUT15
IO = 26 mA, VO = 0.6 V, Rext = 720 Ω,
TJ = 25°C
±6%
Output current 2
OUT0 to OUT15 VO = 0.8 V, Rext = 360 Ω, CG = 0.992 (2)
Output current error
I = 52 mA, VO = 0.8 V, Rext = 360 Ω,
OUT0 to OUT15 O
TJ = 25°C
±8%
Output channel to
channel current error
OUT0 to OUT15
IO = 52 mA, VO = 0.8 V, Rext = 360 Ω,
TJ = 25°C
±6%
IOUT vs
VOUT
Output current vs output
voltage regulation
OUT0 to OUT15
IOUT,Th1
Threshold current 1 for
error detection
OUT0 to OUT15 IOUT,target = 26 mA
0.5 ×
ITARGET%
IOUT,Th2
Threshold current 2 for
error detection
OUT0 to OUT15 IOUT,target = 52 mA
0.5 ×
ITARGET%
IOUT,Th3
Threshold current 3 for
error detection
OUT0 to OUT15 IOUT,target = 104 mA
0.5 ×
ITARGET%
TSD
Overtemperature shutdown (3)
THYS
Restart hysteresis
IO(2)
Ci
Input capacitance
Cio
Input / output
capacitance
SDA
ICC
(1)
(2)
(3)
26
Supply current
mA
52
VO = 1 V to 3 V, IO = 26 mA
mA
±0.1
VO = 3 V to 5.5 V, IO = 26 mA to 120 mA
%/V
±1
150
SCL, A0, A1,
A2, A3, RESET
mA
175
200
°C
15
°C
VI = VCC or GND
5
pF
VI = VCC or GND
8
pF
VCC = 5.5 V
OUT0 to OUT15 = OFF,
Rext = Open
25
OUT0 to OUT15 = OFF,
Rext = 720 Ω
29
OUT0 to OUT15 = OFF,
Rext = 360 Ω
32
OUT0 to OUT15 = OFF,
Rext = 180 Ω
37
OUT0 to OUT15 = ON,
Rext = 720 Ω
29
OUT0 to OUT15 = ON,
Rext = 360 Ω
32
OUT0 to OUT15 = ON,
Rext = 180 Ω
37
mA
All typical values are at TA = 25 °C.
CG is the Current Gain and is defined in Table 12.
Specified by design
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7.6 Timing Requirements
TA = –40 °C to 85 °C
STANDARD MODE
I2C BUS
FAST MODE
I2C BUS
FAST MODE PLUS
I2C BUS
MIN
MAX
MIN
MAX
MIN
MAX
0
100
0
400
0
1000
UNIT
I2C INTERFACE
SCL clock frequency (1)
fSCL
kHz
2
tBUF
I C bus free time between Stop and
Start conditions
4.7
1.3
0.5
μs
tHD;STA
Hold time (repeated) Start condition
4
0.6
0.26
μs
tSU;STA
Set-up time for a repeated Start
condition
4.7
0.6
0.26
μs
tSU;STO
Set-up time for Stop condition
4
0.6
0.26
μs
tHD;DAT
Data hold time
0
0
0
ns
(2)
tVD;ACK
Data valid acknowledge time
0.3
3.45
0.1
0.9
0.05
0.45
μs
tVD;DAT
Data valid time (3)
0.3
3.45
0.1
0.9
0.05
0.45
μs
tSU;DAT
Data set-up time
250
100
tLOW
Low period of SCL clock
4.7
tHIGH
High period of SCL clock
4
tf
Fall time of both SDA and SCL
signals (4) (5)
tr
Rise time of both SDA and SCL
signals
tSP
Pulse width of spikes that must be
suppressed by the input filter (7)
50
ns
1.3
0.5
μs
0.6
0.26
μs
300 20+0.1Cb
(6)
300
120
ns
1000 20+0.1Cb
(6)
300
120
ns
50
50
ns
50
RESET
tW
Reset pulse width
tREC
Reset recovery time
tRESET
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
8
Time to reset
(8) (9)
10
10
10
ns
0
0
0
ns
400
400
400
ns
Minimum SCL clock frequency is limited by the bus time-out feature, which resets the serial bus interface if either SDA or SCL is held
low for a minimum of 25 ms. Disable bus time-out feature for dc operation.
tVD;ACK = time for ACK signal from SCL low to SDA (out) low.
tVD;DAT = minimum time for SDA data out to be valid following SCL low.
A master device must internally provide a hold time of at least 300 ns for the SDA signal (refer to the VIL of the SCL signal) in order to
bridge the undefined region of the SCL falling edge.
The maximum tf for the SDA and SCL bus lines is specified at 300 ns. The maximum fall time (tf) for the SDA output stage is specified
at 250 ns. This allows series protection resistors to be connected between the SDA and the SCL pins and the SDA/SCL bus lines
without exceeding the maximum specified tf.
Cb = Total capacitance of one bus line in pF
Input filters on the SDA and SCL inputs suppress noise spikes less than 50 ns.
Resetting the device while actively communicating on the bus may cause glitches or errant Stop conditions.
Upon reset, the full delay will be the sum of tRESET and the RC time constant of the SDA bus.
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7.7 Typical Characteristics
150
140
IO = 120 mA
125
IO = 100 mA
100
Output Current (mA)
Output Current, Iout (A)
120
80
60
40
100
IO = 80 mA
75
IO = 60 mA
50
IO = 40 mA
IO = 20 mA
25
20
IO = 5 mA
0
0
0
500
1000
1500
2000
2500
3000
3500
4000
0
1.0
Rext (W)
Figure 1. IOUT,target vs Rext
2.0
3.0
Output Voltage (V)
Figure 2. Output Current vs Output Voltage
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8 Parameter Measurement Information
Start
SCL
ACK or Read Cycle
SDA
30%
tRESET
50%
RESET
tREC
tW
OUTn
50%
tRESET
Figure 3. Reset Timing
SDA
tBUF
tHD;STA
tr
tSP
tf
tLOW
SCL
tSU;DAT
tHD;STA
P
tHD;DAT
S
tHIGH
tSU;DAT
tSU;STO
Sr
P
Figure 4. Definition of Timing
Protocol
START
Condition
(S)
Bit 7
MSB
(A7)
tSU;STA
tLOW
Bit 6
(A6)
tHIGH
Bit 7
(D1)
Bit 8
(D0)
Acknowledge
(A)
STOP Condition
(P)
1/fSCL
SCL
tr
tf
tBUF
SDA
tHD;STA
tHD;DAT
tSU;DAT
tVD;DAT
tVD;ACK
TSU;STO
NOTE: Rise and fall times refer to VIL and VIH.
Figure 5. I2C Bus Timing
10
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Parameter Measurement Information (continued)
VCC
RL
Pulse
Generator
VI
DUT
RT
VCC
Open
GND
VO
CL
NOTE:
•
RL = Load resistance for SDA and SCL; should be >1 kΩ at 3-mA or lower current
•
CL = Load capacitance; includes jig and probe capacitance
•
RT = Termination resistance; should be equal to the output impedance (ZO) of the pulse generator
Figure 6. Test Circuit for Switching Characteristics
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9 Detailed Description
9.1 Overview
The TLC59116 is an I2C bus controlled 16-channel LED driver that is optimized for red/green/blue/amber (RGBA)
color mixing and backlight application. Each LED output has its own 8-bit resolution (256 steps) fixed-frequency
individual PWM controller that operates at 97 kHz, with a duty cycle that is adjustable from 0% to 99.6%. The
individual PWM controller allows each LED to be set to a specific brightness value. An additional 8-bit resolution
(256 steps) group PWM controller has both a fixed frequency of 190 Hz and an adjustable frequency between 24
Hz to once every 10.73 seconds, with a duty cycle that is adjustable from 0% to 99.6%. The group PWM
controller dims or blinks all LEDs with the same value.
9.2 Functional Block Diagram
A0 A1 A2 A3
SCL
Input Filter
SDA
REXT
OUT0
OUT1
OUT14 OUT15
I/O Regulator
2
I C Bus Control
Output Driver and Error Detection
Power-On
Reset Control
RESET
LED State
Select Register
PWM Register X
Brightness Control
97 kHz
24.3 kHz
GRPFRQ
Register
25-MHz
Oscillator
GRPPWM
Register
190 kHz
0 = Permanently off
1 = Permanently on
VCC
GND
9.3 Feature Description
9.3.1 Open-Circuit Detection
The TLC59116 LED open-circuit detection compares the effective current level IOUT with the open load detection
threshold current IOUT,Th. If IOUT is below the threshold IOUT,Th the TLC59116 detects an open load condition. This
error status can be read out as an error flag through the registers EFLAG1 and EFLAG2.
For open-circuit error detection, a channel must be on and the PWM must be off.
Table 1. Open-Circuit Detection
12
STATE OF OUTPUT PORT
CONDITION OF OUTPUT
CURRENT
ERROR STATUS CODE
MEANING
Off
IOUT = 0 mA
0
Detection not possible
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Feature Description (continued)
Table 1. Open-Circuit Detection (continued)
STATE OF OUTPUT PORT
On
(1)
CONDITION OF OUTPUT
CURRENT
ERROR STATUS CODE
MEANING
IOUT < IOUT,Th (1)
0
Open circuit
Channel n error status bit 1
Normal
IOUT ≥ IOUT,Th
(1)
IOUT,Th = 0.5 × IOUT,target (typical)
9.3.2 Overtemperature Detection and Shutdown
The TLC59116 LED is equipped with a global overtemperature sensor and 16 individual channel-selective
overtemperature sensors.
• When the global sensor reaches the trip temperature, all output channels are shut down, and the error status
is stored in the internal Error Status register of every channel. After shutdown, the channels automatically
restart after cooling down, if the control signal (output latch) remains on. The stored error status is not reset
after cooling down and can be read out as the error status code in registers EFLAG1 and EFLAG2.
• When one of the channel-specific sensors reaches trip temperature, only the affected output channel is shut
down, and the error status is stored only in the internal Error Status register of the affected channel. After
shutdown, the channel automatically restarts after cooling down, if the control signal (output latch) remains
on. The stored error status is not reset after cooling down and can be read out as error status code in
registers EFLAG1 and EFLAG2.
For channel-specific overtemperature error detection, a channel must be on.
The error flags of open-circuit and overtemperature are ORed to set the EFLAG1 and EFLAG2 registers.
The error status code due to overtemperature is reset when the host writes 1 to bit 7 of the MODE2 register. The
host must write 0 to bit 7 of the MODE2 register to enable the overtemperature error flag.
Table 2. Overtemperature Detection (1)
(1)
STATE OF OUTPUT PORT
CONDITION
ERROR STATUS CODE
MEANING
On
On → all channels Off
Tj < Tj,trip global
1
Normal
Tj > Tj,trip global
All error status bits = 0
Global overtemperature
On
On → Off
Tj < Tj,trip channel n
1
Normal
Tj > Tj,trip channel n
Channel n error status bit = 0
Channel n overtemperature
The global shutdown threshold temperature is approximately 170°C.
9.3.3 Power-On Reset (POR)
When power is applied to VCC, an internal power-on reset holds the TLC59116 in a reset condition until VCC
reaches VPOR. At this point, the reset condition is released and the TLC59116 registers, and I2C bus state
machine are initialized to their default states (all zeroes), causing all the channels to be deselected. Thereafter,
VCC must be lowered below 0.2 V to reset the device.
9.3.4 External Reset
A reset can be accomplished by holding the RESET pin low for a minimum of tW. The TLC59116 registers and
I2C state machine are held in their default states until the RESET input is again high.
This input requires a pullup resistor to VCC if no active connection is used.
9.3.5 Software Reset
The Software Reset Call (SWRST Call) allows all the devices in the I2C bus to be reset to the power-up state
value through a specific I2C bus command.
The SWRST Call function is defined as the following:
1. A Start command is sent by the I2C bus master.
2. The reserved SWRST I2C bus address 1101 011 with the R/W bit set to 0 (write) is sent by the I2C bus
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master.
3. The TLC59116 device(s) acknowledge(s) after seeing the SWRST Call address 1101 0110 (D6h) only. If the
R/W bit is set to 1 (read), no acknowledge is returned to the I2C bus master.
4. Once the SWRST Call address has been sent and acknowledged, the master sends two bytes with two
specific values (SWRST data byte 1 and byte 2):
(a) Byte1 = A5h: the TLC59116 acknowledges this value only. If byte 1 is not equal to A5h, the TLC59116
does not acknowledge it.
(b) Byte 2 = 5Ah: the TLC59116 acknowledges this value only. If byte 2 is not equal to 5Ah, the TLC59116
does not acknowledge it.
If more than two bytes of data are sent, the TLC59116 does not acknowledge any more.
5. Once the correct two bytes (SWRST data byte 1 and byte 2 only) have been sent and correctly
acknowledged, the master sends a Stop command to end the SWRST Call. The TLC59116 then resets to
the default value (power-up value) and is ready to be addressed again within the specified bus free time
(tBUF).
The I2C bus master may interpret a non-acknowledge from the TLC59116 (at any time) as a SWRST Call Abort.
The TLC59116 does not initiate a reset of its registers. This happens only when the format of the Start Call
sequence is not correct.
9.3.6 Individual Brightness Control With Group Dimming/Blinking
A 97-kHz fixed-frequency signal with programmable duty cycle (8 bits, 256 steps) is used to control the individual
brightness for each LED.
6
7
8
6
7
8
9
5
5
10
3
4
3
4
1
2
1
2
512
510
511
509
507
508
11
12
9
10
8
6
7
5
4
3
2
1
On top of this signal, one of the following signals can be superimposed (this signal can be applied to the four
LED outputs):
• A lower 190-Hz fixed-frequency signal with programmable duty cycle (8 bits, 256 steps) provides a global
brightness control.
• A programmable frequency signal from 24 Hz to 1/10.73 s (8 bits, 256 steps) provides a global blinking
control.
N × 40 ns
with N = 0 to 255
(PWM register)
M × 256 × 2 × 40 ns
with M = 0 to 255
(GRPPWM register)
256 × 40 ns = 10.24 µs
(97.6 kHz)
Group Dimming Signal
256 × 2 × 256 × 40 ns = 5.24 ms (190.7 Hz)
Resulting Brightness + Group Dimming Signal
NOTE:
•
Minimum pulse width for LEDn brightness control is 40 ns.
•
Minimum pulse width for group dimming is 20.48 μs.
•
When M = 1 (GRPPWM register value), the resulting LEDn Brightness Control + Group Dimming signal has two
pulses of the LED Brightness Control signal (pulse width = n × 40 ns, with n defined in the PWMx register).
•
This resulting Brightness + Group Dimming signal shows a resulting control signal with M = 4 (8 pulses).
Figure 7. Brightness and Group Dimming Signals
14
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9.4 Device Functional Modes
9.4.1 Active
Active mode occurs when one or more of the output channels is enabled.
9.4.2 Standby
Standby mode occurs when all output channels are disabled. Standby mode may be entered via I2C command or
by pulling the RESET pin low.
9.5 Register Maps
Table 3 describes the registers in the TLC59116.
Table 3. Register Descriptions
REGISTER
NUMBER
(HEX)
(1)
NAME
ACCESS (1)
DESCRIPTION
00
MODE1
R/W
Mode 1
01
MODE2
R/W
Mode 2
02
PWM0
R/W
Brightness control LED0
03
PWM1
R/W
Brightness control LED1
04
PWM2
R/W
Brightness control LED2
05
PWM3
R/W
Brightness control LED3
06
PWM4
R/W
Brightness control LED4
07
PWM5
R/W
Brightness control LED5
08
PWM6
R/W
Brightness control LED6
09
PWM7
R/W
Brightness control LED7
0A
PWM8
R/W
Brightness control LED8
0B
PWM9
R/W
Brightness control LED9
0C
PWM10
R/W
Brightness control LED10
0D
PWM11
R/W
Brightness control LED11
0E
PWM12
R/W
Brightness control LED12
0F
PWM13
R/W
Brightness control LED13
10
PWM14
R/W
Brightness control LED14
11
PWM15
R/W
Brightness control LED15
12
GRPPWM
R/W
Group duty cycle control
13
GRPFREQ
R/W
Group frequency
14
LEDOUT0
R/W
LED output state 0
15
LEDOUT1
R/W
LED output state 1
16
LEDOUT2
R/W
LED output state 2
17
LEDOUT3
R/W
LED output state 3
18
SUBADR1
R/W
I2C bus subaddress 1
19
SUBADR2
R/W
I2C bus subaddress 2
1A
SUBADR3
R/W
I2C bus subaddress 3
1B
ALLCALLADR
R/W
LED All Call I2C bus address
1C
IREF
R/W
IREF configuration
1D
EFLAG1
R
Error flags 1
1E
EFLAG2
R
Error flags 2
R = read, W = write
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9.5.1 Mode Register 1 (MODE1)
Table 4 describes Mode Register 1.
Table 4. MODE1 – Mode Register 1 (Address 00h) Bit Description
BIT
7
6
AI2
AI1
ACCESS (1)
R
R
5
AI0
R
4
OSC
R/W
3
(1)
(2)
(3)
SYMBOL
SUB1
R/W
2
SUB2
R/W
1
SUB3
R/W
0
ALLCALL
R/W
VALUE
DESCRIPTION
0 (2)
Register auto-increment disabled
1
Register auto-increment enabled
(2)
Auto-increment bit 1 = 0
1
Auto-increment bit 1 = 1
0 (2)
Auto-increment bit 0 = 0
1
Auto-increment bit 0 = 1
0
Normal mode (3)
(2)
Oscillator off.
0
1
0 (2)
Device does not respond to I2C bus subaddress 1.
1
Device responds to I2C bus subaddress 1.
(2)
Device does not respond to I2C bus subaddress 2.
1
Device responds to I2C bus subaddress 2.
0
0 (2)
Device does not respond to I2C bus subaddress 3.
1
Device responds to I2C bus subaddress 3.
0
Device does not respond to LED All Call I2C bus address.
1 (2)
Device responds to LED All Call I2C bus address.
R = read, W = write
Default value
Requires 500 μs maximum for the oscillator to be up and running once OSC bit has been set to logic 1. Timings on LED outputs are not
ensured if PWMx, GRPPWM, or GRPFREQ registers are accessed within the 500-μs window.
NOTE
The OSC bit (Bit 4) must be set to 0 before any outputs will turn on. Proper operation
requires this bit to be 0. Setting the bit to a 1 will turn all channels off.
9.5.2 Mode Register 2 (MODE2)
Table 5 describes Mode Register 2.
Table 5. MODE2 – Mode Register 2 (Address 01h) Bit Description
BIT
7
SYMBOL
EFCLR
6
5
2:0
(1)
(2)
(3)
16
R/W
R
DMBLNK
4
3
ACCESS (1)
R/W
R
OCH
R/W
R
VALUE
0 (2)
DESCRIPTION
Enable error status flag
1
Clear error status flag
(2)
Reserved
0
0 (2)
Group control = dimming
1
Group control = blinking
0 (2)
Reserved
(2)
Outputs change on Stop command (3)
1
Outputs change on ACK
0
000 (2)
Reserved
R = read, W = write
Default value
Change of the outputs at the Stop command allows synchronizing outputs of more than one TLC59116. Applicable to registers from 02h
(PWM0) to 17h (LEDOUT3) only.
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9.5.3 Brightness Control Registers 0 to 15 (PWM0 to PWM15)
Table 6 describes Brightness Control Registers 0 to 15.
Table 6. PWM0 to PWM15 – Brightness Control Registers 0 to 15 (Address 02h to 11h) Bit Description
ADDRESS
REGISTER
BIT
SYMBOL
ACCESS (1)
VALUE
02h
PWM0
7:0
IDC0[7:0]
R/W
0000 0000 (2)
PWM0 individual duty cycle
03h
PWM1
7:0
IDC1[7:0]
R/W
0000 0000 (2)
PWM1 individual duty cycle
(2)
PWM2 individual duty cycle
(1)
(2)
DESCRIPTION
04h
PWM2
7:0
IDC2[7:0]
R/W
0000 0000
05h
PWM3
7:0
IDC3[7:0]
R/W
0000 0000 (2)
PWM3 individual duty cycle
06h
PWM4
7:0
IDC4[7:0]
R/W
0000 0000 (2)
PWM4 individual duty cycle
07h
PWM5
7:0
IDC5[7:0]
R/W
0000 0000 (2)
PWM5 individual duty cycle
(2)
PWM6 individual duty cycle
08h
PWM6
7:0
IDC6[7:0]
R/W
0000 0000
09h
PWM7
7:0
IDC7[7:0]
R/W
0000 0000 (2)
PWM7 individual duty cycle
0Ah
PWM8
7:0
IDC8[7:0]
R/W
0000 0000 (2)
PWM8 individual duty cycle
(2)
PWM9 individual duty cycle
0Bh
PWM9
7:0
IDC9[7:0]
R/W
0000 0000
0Ch
PWM10
7:0
IDC10[7:0]
R/W
0000 0000 (2)
PWM10 individual duty cycle
0Dh
PWM11
7:0
IDC11[7:0]
R/W
0000 0000 (2)
PWM11 individual duty cycle
(2)
PWM12 individual duty cycle
0Eh
PWM12
7:0
IDC12[7:0]
R/W
0000 0000
0Fh
PWM13
7:0
IDC13[7:0]
R/W
0000 0000 (2)
PWM13 individual duty cycle
10h
PWM14
7:0
IDC14[7:0]
R/W
0000 0000 (2)
PWM14 individual duty cycle
11h
PWM15
7:0
IDC15[7:0]
R/W
0000 0000 (2)
PWM15 individual duty cycle
R = read, W = write
Default value
A 97-kHz fixed frequency signal is used for each output. Duty cycle is controlled through 256 linear steps from
00h (0% duty cycle = LED output off) to FFh (99.6% duty cycle = LED output at maximum brightness). Applicable
to LED outputs programmed with LDRx = 10 or 11 (LEDOUT0, LEDOUT1, LEDOUT2 and LEDOUT3 registers).
Duty cycle = IDCn[7:0] / 256
(1)
9.5.4 Group Duty Cycle Control Register (GRPPWM)
Table 7 describes the Group Duty Cycle Control Register.
Table 7. GRPPWM – Group Brightness Control Register (Address 12h) Bit Description
ADDRESS
REGISTER
BIT
SYMBOL
ACCESS (1)
VALUE
12h
GRPPWM
7:0
GDC0[7:0]
R/W
1111 1111 (2)
(1)
(2)
DESCRIPTION
GRPPWM register
R = read, W = write
Default value
When the DMBLNK bit (MODE2 register) is programmed with logic 0, a 190-Hz fixed-frequency signal is
superimposed with the 97-kHz individual brightness control signal. GRPPWM is then used as a global brightness
control, allowing the LED outputs to be dimmed with the same value. The value in GRPFREQ is then a Don't
care.
General brightness for the 16 outputs is controlled through 256 linear steps from 00h (0% duty cycle = LED
output off) to FFh (99.6% duty cycle = maximum brightness). This is applicable to LED outputs programmed with
LDRx = 11 (LEDOUT0, LEDOUT1, LEDOUT2 and LEDOUT3 registers).
When DMBLNK bit is programmed with logic 1, the GRPPWM and GRPFREQ registers define a global blinking
pattern, where GRPFREQ defines the blinking period (from 24 Hz to 10.73 s) and GRPPWM defines the duty
cycle (ON/OFF ratio in %).
Duty cycle = GDC0[7:0] / 256
(2)
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9.5.5 Group Frequency Register (GRPFREQ)
Table 8 describes the Group Frequency Register.
Table 8. GRPFREQ – Group Frequency Register (Address 13h) Bit Description
ADDRESS
REGISTER
BIT
SYMBOL
ACCESS (1)
VALUE
13h
GRPFREQ
7:0
GFRQ[7:0]
R/W
0000 0000 (2)
(1)
(2)
DESCRIPTION
GRPFREQ register
R = read, W = write
Default value
GRPFREQ is used to program the global blinking period when the DMBLNK bit (MODE2 register) is equal to 1.
Value in this register is a Don't care when DMBLNK = 0. This is applicable to LED output programmed with
LDRx = 11 (LEDOUT0, LEDOUT1, LEDOUT2 and LEDOUT3 registers).
The blinking period is controlled through 256 linear steps from 00h (41 ms, frequency 24 Hz) to FFh (10.73 s).
Global blinking period (seconds) = (GFRQ[7:0] + 1) / 24
9.5.6 LED Driver Output State Registers 0 to 3 (LEDOUT0 to LEDOUT3)
Table 9 describes LED Driver Output State Registers 0 to 3.
Table 9. LEDOUT0 to LEDOUT3 – LED Driver Output State Registers 0 to 3 (Address 14h to 17h)
Bit Description
ADDRESS
14h
15h
16h
17h
(1)
(2)
REGISTER
LEDOUT0
LEDOUT1
LEDOUT2
LEDOUT3
BIT
SYMBOL
ACCESS (1)
VALUE
7:6
LDR3[1:0]
R/W
00 (2)
LED3 output state control
5:4
LDR2[1:0]
R/W
00 (2)
LED2 output state control
3:2
LDR1[1:0]
R/W
00 (2)
LED1 output state control
1:0
LDR0[1:0]
R/W
00 (2)
LED0 output state control
(2)
LED7 output state control
DESCRIPTION
7:6
LDR7[1:0]
R/W
00
5:4
LDR6[1:0]
R/W
00 (2)
LED6 output state control
3:2
LDR5[1:0]
R/W
00 (2)
LED5 output state control
(2)
LED4 output state control
1:0
LDR4[1:0]
R/W
00
7:6
LDR11[1:0]
R/W
00 (2)
LED11 output state control
5:4
LDR10[1:0]
R/W
00 (2)
LED10 output state control
3:2
LDR9[1:0]
R/W
00 (2)
LED9 output state control
(2)
LED8 output state control
1:0
LDR8[1:0]
R/W
00
7:6
LDR15[1:0]
R/W
00 (2)
LED15 output state control
5:4
LDR14[1:0]
R/W
00 (2)
LED14 output state control
(2)
LED13 output state control
LED12 output state control
3:2
LDR13[1:0]
R/W
00
1:0
LDR12[1:0]
R/W
00 (2)
R = read, W = write
Default value
LDRx = 00: LED driver x is off (default power-up state).
LDRx = 01: LED driver x is fully on (individual brightness and group dimming/blinking not controlled).
LDRx = 10: LED driver x is individual brightness can be controlled through its PWMx register.
LDRx = 11: LED driver x is individual brightness and group dimming/blinking can be controlled through its PWMx
register and the GRPPWM registers.
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9.5.7 I2C Bus Subaddress Registers 1 to 3 (SUBADR1 to SUBADR3)
Table 10 describes I2C Bus Subaddress Registers 1 to 3.
Table 10. SUBADR1 to SUBADR3 – I2C Bus Subaddress Registers 1 to 3 (Address 18h to 1Ah)
Bit Description
ADDRESS
18h
19h
1Ah
(1)
(2)
REGISTER
SUBADR1
SUBADR2
SUBADR3
BIT
SYMBOL
ACCESS (1)
VALUE
7:1
A1[7:1]
R/W
1101 001 (2)
0
A1[0]
R
0 (2)
7:1
A2[7:1]
R/W
1101 010 (2)
0
A2[0]
R
0 (2)
7:1
A3[7:1]
0
A3[0]
R/W
1101 100
R
0
DESCRIPTION
I2C bus subaddress 1
Reserved
I2C bus subaddress 2
Reserved
(2)
(2)
I2C bus subaddress 3
Reserved
R = read, W = write
Default value
Subaddresses are programmable through the I2C bus. Default power-up values are D2h, D4h, D8h. The
TLC59116 does not acknowledge these addresses immediately after power-up (the corresponding SUBx bit in
MODE1 register is equal to 0).
Once subaddresses have been programmed to valid values, the SUBx bits (MODE1 register) must be set to 1 to
allows the device to acknowledge these addresses.
Only the 7 MSBs representing the I2C bus subaddress are valid. The LSB in SUBADRx register is a read-only bit
(0).
When SUBx is set to 1, the corresponding I2C bus subaddress can be used during either an I2C bus read or write
sequence.
9.5.8 LED All Call I2C Bus Address Register (ALLCALLADR)
Table 11 describes the LED All Call I2C Bus Address Register.
Table 11. ALLCALLADR – LED All Call I2C Bus Address Register (Address 1Bh) Bit Description
ADDRESS
1Bh
(1)
(2)
REGISTER
ALLCALLADR
BIT
SYMBOL
ACCESS (1)
VALUE
7:1
AC[7:1]
R/W
1101 000 (2)
0
AC[0]
R
0 (2)
DESCRIPTION
All Call I2C bus address
Reserved
R = read, W = write
Default value
The LED All Call I2C bus address allows all the TLC59116 devices in the bus to be programmed at the same
time (ALLCALL bit in register MODE1 must be equal to 1, which is the power-up default state). This address is
programmable through the I2C bus and can be used during either an I2C bus read or write sequence. The
register address can also be programmed as a Sub Call.
Only the seven MSBs representing the All Call I2C bus address are valid. The LSB in ALLCALLADR register is a
read-only bit (0).
If ALLCALL bit = 0, the device does not acknowledge the address programmed in register ALLCALLADR.
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9.5.9 Output Gain Control Register (IREF)
Table 12 describes the Output Gain Control Register.
Table 12. IREF – Output Gain Control Register (Address 1Ch) Bit Description
ADDRESS
1Ch
REGISTER
BIT
SYMBOL
ACCESS (1)
VALUE
7
CM
R/W
1 (2)
6
HC
R/W
1 (2)
IREF
5:0
(1)
(2)
CC[5:0]
R/W
DESCRIPTION
High/low current multiplier
Subcurrent
11 1111
(2)
Current multiplier
R = read, W = write
Default value
IREF determines the voltage gain (VG), which affects the voltage at the REXT terminal and indirectly the
reference current (Iref) flowing through the external resistor at terminal REXT. Bit 0 is the Current Multiplier (CM)
bit, which determines the ratio IOUT,target/Iref. Each combination of VG and CM sets a Current Gain (CG).
• VG: the relationship between {HC,CC[0:5]} and the voltage gain is calculated as shown:
VG = (1 + HC) × (1 + D/64) / 4
D = CC0 × 25 + CC1 × 24 + CC2 × 23 + CC3 × 22 + CC4 × 21 + CC5 × 20
Where HC is 1 or 0, and D is the binary value of CC[0:5]. So, the VG could be regarded as a floating-point
number with 1-bit exponent HC and 6-bit mantissa CC[0:5]. {HC,CC[0:5]} divides the programmable voltage
gain (VG) into 128 steps and two sub-bands:
Low-voltage subband (HC = 0): VG = 1/4 to 127/256, linearly divided into 64 steps
High-voltage subband (HC = 1): VG = 1/2 to 127/128, linearly divided into 64 steps
• CM: In addition to determining the ratio IOUT,target/Iref, CM limits the output current range.
High Current Multiplier (CM = 1): IOUT,target/Iref = 15, suitable for output current range IOUT = 10 mA to 120 mA.
Low Current Multiplier (CM = 0): IOUT,target/Iref = 5, suitable for output current range IOUT = 5 mA to 40 mA
• CG: The total Current Gain is defined as:
VREXT = 1.26 V × VG
Iref = VREXT/Rext, if the external resistor (Rext) is connected to ground.
IOUT,target = Iref × 15 × 3CM – 1 = 1.26 V/Rext × VG × 15 × 3CM – 1 = (1.26 V/Rext × 15) × CG
CG = VG × 3CM – 1
Therefore, CG = (1/12) to (127/128), divided into 256 steps.
Examples
• IREF Code {CM, HC, CC[0:5]} = {1,1,111111}
VG = 127/128 = 0.992 and CG = VG × 30 = VG = 0.992
• IREF Code {CM, HC, CC[0:5]} = {1,1,000000}
VG = (1 + 1) × (1 + 0/64)/4 = 1/2 = 0.5, and CG = 0.5
• IREF Code {CM, HC, CC[0:5]} = {0,0,000000}
VG = (1 + 0) × (1 + 0/64)/4 = 1/4, and CG = (1/4) × 3–1 = 1/12
After power-on, the default value of the Configuration Code {CM, HC, CC[0:5]} is {1,1,111111}. Therefore,
VG = CG = 0.992. The relationship between the Configuration Code and the Current Gain is shown in Figure 8.
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1.00
CM = 1 (High Current Multiplier)
CM = 0 (Low Current Multiplier)
Current Gain (CG)
0.75
HC = 0 (Low
Voltage SubBand)
0.50
HC = 1 (High
Voltage SubBand)
HC = 0 (Low
Voltage SubBand)
HC = 1 (High
Voltage SubBand)
0.25
{1,1,110000}
{1,1,100000}
{1,1,010000}
{1,1,000000}
{1,0,110000}
{1,0,100000}
{1,0,010000}
{1,0,000000}
{0,1,110000}
{0,1,100000}
{0,1,010000}
{0,1,000000}
{0,0,110000}
{0,0,100000}
{0,0,010000}
{0,0,000000}
0.00
Configuration Code (CM, HC, CC[0:5]) in Binary Format
Figure 8. Current Gain vs Configuration Code
9.5.10 Error Flags Registers (EFLAG1, EFLAG2)
Table 13 describes Error Flags Registers 1 and 2.
Table 13. EFLAG1, EFLAG2 – Error Flags Registers (Address 1Dh and 1Eh) Bit Description
ADDRESS
1Dh
1Eh
(1)
(2)
(3)
REGISTER
EFLAG1
EFLAG2
ACCESS (1)
VALUE (2)
DESCRIPTION (3)
BIT
SYMBOL
0
EFLAG1[0]
0
A 1 indicates an error - Channel 0
1
EFLAG1[1]
0
A 1 indicates an error - Channel 1
2
EFLAG1[2]
0
A 1 indicates an error - Channel 2
3
EFLAG1[3]
0
A 1 indicates an error - Channel 3
4
EFLAG1[4]
0
A 1 indicates an error - Channel 4
5
EFLAG1[5]
0
A 1 indicates an error - Channel 5
6
EFLAG1[6]
0
A 1 indicates an error - Channel 6
7
EFLAG1[7]
0
A 1 indicates an error - Channel 7
0
EFLAG1[0]
0
A 1 indicates an error - Channel 8
1
EFLAG1[1]
0
A 1 indicates an error - Channel 9
2
EFLAG1[2]
0
A 1 indicates an error - Channel 10
3
EFLAG1[3]
0
A 1 indicates an error - Channel 11
4
EFLAG1[4]
0
A 1 indicates an error - Channel 12
5
EFLAG1[5]
0
A 1 indicates an error - Channel 13
6
EFLAG1[6]
0
A 1 indicates an error - Channel 14
7
EFLAG1[7]
0
A 1 indicates an error - Channel 15
R
R
R = read, W = write
Default value
At power-up, in order to initialize the Error Flags registers, the host must write 1 to bit 7 of the MODE2 register and then write 0 to bit 7
of the MODE2 register.
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9.5.11 Control Register
Following the successful acknowledgment of the slave address, LED All Call address or LED Sub Call address,
the bus master sends a byte to the TLC59116, which is stored in the Control register. The lowest five bits are
used as a pointer to determine which register is accessed (D[4:0]). The highest three bits are used as autoincrement flag and auto-increment options (AI[2:0]).
Auto-Increment
Flag
Register Address
AI2 AI1 AI0 D4
D3
D2
D1
D0
Auto-Increment
Options
Figure 9. Control Register
When the auto-increment flag is set (AI2 = logic 1), the five low order bits of the Control register are automatically
incremented after a read or write. This allows the user to program the registers sequentially. Four different types
of auto-increment are possible, depending on AI1 and AI0 values.
Table 14. Auto-Increment Options
AI2
AI1
AI0
0
0
0
No auto-increment
DESCRIPTION
1
0
0
Auto-increment for all registers. D[4:0] roll over to 0 0000 after the last register (1 1011) is accessed.
1
0
1
Auto-increment for individual brightness registers only. D[4:0] roll over to 0 0010 after the last register
(1 0001) is accessed.
1
1
0
Auto-increment for global control registers only. D[4:0] roll over to 1 0010 after the last register (1 0011) is
accessed.
1
1
1
Auto-increment for individual and global control registers only. D[4:0] roll over to 0 0010 after the last
register (1 0011) is accessed.
NOTE
Other combinations are not shown in Table 14. (AI[2:0] = 001, 010, and 011) are reserved
and must not be used for proper device operation.
AI[2:0] = 000 is used when the same register must be accessed several times during a single I2C bus
communication, for example, changing the brightness of a single LED. Data is overwritten each time the register
is accessed during a write operation.
AI[2:0] = 100 is used when all the registers must be sequentially accessed, for example, power-up programming.
AI[2:0] = 101 is used when the four LED drivers must be individually programmed with different values during the
same I2C bus communication, for example, changing a color setting to another color setting.
AI[2:0] = 110 is used when the LED drivers must be globally programmed with different settings during the same
I2C bus communication, for example, global brightness or blinking change.
AI[2:0] = 111 is used when individually and global changes must be performed during the same I2C bus
communication, for example, changing color and global brightness at the same time.
Only the five least significant bits D[4:0] are affected by the AI[2:0] bits.
When the Control register is written, the register entry point determined by D[4:0] is the first register that will be
addressed (read or write operation), and can be anywhere between 0 0000 and 1 1011 (as defined in Table 3).
When AI[2] = 1, the Auto-Increment flag is set and the rollover value at which the point where the register
increment stops and goes to the next one is determined by AI[2:0]. See Table 14 for rollover values. For
example, if the Control register = 1111 0100 (F4h), then the register addressing sequence will be (in hex):
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14 → ... → 1B → 00 → ... → 13 → 02 → ... → 13 → 02 → ... as long as the master keeps sending or reading
data.
10 Application and Implementation
NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TI’s customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
10.1 Application Information
10.1.1 Device Address
Following a Start condition, the bus master must output the address of the slave it is accessing.
10.1.2 Regular I2C Bus Slave Address
The I2C bus slave address of the TLC59116 is shown in Figure 10. To conserve power, no internal pullup
resistors are incorporated on the hardware-selectable address pins, and they must be pulled high or low. For
buffer management purposes, a set of sector information data should be stored.
Slave Address
1
1
0
Fixed
A3
A2
A1
A0 R/W
Hardware
Selectable
Figure 10. Slave Address
The last bit of the address byte defines the operation to be performed. When set to logic 1, a read operation is
selected. When set to logic 0, a write operation is selected.
10.1.3 LED All Call I2C Bus Address
• Default power-up value (ALLCALLADR register): D0h or 1101 000
• Programmable through I2C bus (volatile programming)
• At power-up, LED All Call I2C bus address is enabled. TLC59116 sends an ACK when D0h (R/W = 0) or D1h
(R/W = 1) is sent by the master.
See LED All Call I2C Bus Address Register (ALLCALLADR) for more detail.
NOTE
The default LED All Call I2C bus address (D0h or 1101 000) must not be used as a regular
I2C bus slave address, since this address is enabled at power-up. All the TLC59116
devices on the I2C bus will acknowledge the address if it is sent by the I2C bus master.
10.1.4 LED Sub Call I2C Bus Address
• Three different I2C bus addresses can be used
• Default power-up values:
– SUBADR1 register: D2h or 1101 001
– SUBADR2 register: D4h or 1101 010
– SUBADR3 register: D8h or 1101 100
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Application Information (continued)
•
•
Programmable through I2C bus (volatile programming)
At power-up, Sub Call I2C bus address is disabled. TLC59116 does not send an ACK when D2h (R/W = 0) or
D3h (R/W = 1) or D4h (R/W = 0) or D5h (R/W = 1) or D8h (R/W = 0) or D9h (R/W = 1) is sent by the master.
See I2C Bus Subaddress Registers 1 to 3 (SUBADR1 to SUBADR3) for more detail.
NOTE
The LED Sub Call I2C bus addresses may be used as regular I2C bus slave addresses if
their corresponding enable bits are set to 0 in the MODE1 Register.
10.1.5 Software Reset I2C Bus Address
The address shown in Figure 11 is used when a reset of the TLC59116 is performed by the master. The
software reset address (SWRST Call) must be used with R/W = 0. If R/W = 1, the TLC59116 does not
acknowledge the SWRST. See Software Reset for more detail.
1
1
0
1
0
1
1
R/W
Figure 11. Software Reset Address
NOTE
The Software Reset I2C bus address is reserved address and cannot be use as regular
I2C bus slave address or as an LED All Call or LED Sub Call address.
10.1.6 Characteristics of the I2C Bus
The I2C bus is for two-way two-line communication between different devices or modules. The two lines are a
serial data line (SDA) and a serial clock line (SCL). Both lines must be connected to a positive supply via a
pullup resistor when connected to the output stages of a device. Data transfer may be initiated only when the bus
is not busy.
10.1.6.1 Bit Transfer
One data bit is transferred during each clock pulse. The data on the SDA line must remain stable during the high
period of the clock pulse as changes in the data line at this time will be interpreted as control signals (see
Figure 12).
SDA
SCL
Data Line
Stable;
Data Valid
Change
of Data
Allowed
Figure 12. Bit Transfer
10.1.6.2 Start and Stop Conditions
Both data and clock lines remain high when the bus is not busy. A high-to-low transition of the data line while the
clock is high is defined as the Start condition (S). A low-to-high transition of the data line while the clock is high is
defined as the Stop condition (P) (see Figure 13).
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Application Information (continued)
SDA
SCL
S
P
Start Condition
Stop Condition
Figure 13. Start and Stop Conditions
10.1.6.3 Acknowledge
The number of data bytes transferred between the Start and the Stop conditions from transmitter to receiver is
not limited. Each byte of eight bits is followed by one acknowledge bit. The acknowledge bit is a high level put on
the bus by the transmitter, whereas the master generates an extra acknowledge related clock pulse.
A slave receiver that is addressed must generate an acknowledge after the reception of each byte. Also a master
must generate an acknowledge after the reception of each byte that has been clocked out of the slave
transmitter. The device that acknowledges has to pull down the SDA line during the acknowledge clock pulse, so
that the SDA line is stable low during the high period of the acknowledge related clock pulse; set-up time and
hold time must be taken into account.
A master receiver must signal an end of data to the transmitter by not generating an acknowledge on the last
byte that has been clocked out of the slave. In this event, the transmitter must leave the data line high to enable
the master to generate a Stop condition.
Data Output
by Transmitter
NACK
Data Output
by Receiver
ACK
SCL From
Master
1
2
8
9
S
Start
Condition
Clock Pulse for
Acknowledgment
Figure 14. Acknowledge/Not Acknowledge on I2C Bus
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Application Information (continued)
Slave Address
1
S
1
Control Register
0 A3 A2 A1 A0 0
Start Condition
X X
A
X D4 D3 D2 D1 D0 A
R/W
A
ACK From Slave
ACK From Slave
P
Stop Condition
Auto-Increment Options
Auto-Increment Flag
ACK From Slave
Figure 15. Write to a Specific Register
Slave Address
S
1
1
Control Register
0 A3 A2 A1 A0 0
Start Condition
A
0
1
0
0
0
0
MODE2 Register
MODE1 Register
0
0
R/W
A
A
A
ACK From Slave
ACK From Slave
MODE1 Register Selection
Auto-Increment On All Registers (see Note A)
Auto-Increment On
ACK From Slave
SUBADR3 Register
ALLCALLADR Register
A
A
ACK From Slave
A.
ACK From Slave
P
Stop Condition
See Table 3 for register definitions.
Figure 16. Write to All Registers Using Auto-Increment
Slave Address
Control Register
S A6 A5 A4 A3 A2 A1 A0 0
Start Condition
A
1
0
1
0
0
0
PWM0 Register
1
R/W
0
A
PWM1 Register
A
A
ACK From Slave
ACK From Slave
PWM0 Register Selection
Auto-Increment On Brightness Registers Only
Auto-Increment On
ACK From Slave
PWM14 Register
PWM15 Register
A
ACK From Slave
PWM0 Register
PWMx Register
A
A
A
ACK From Slave
ACK From Slave
ACK From Slave
P
Stop Condition
Figure 17. Multiple Writes to Individual Brightness Registers Using Auto-Increment
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Application Information (continued)
Slave Address
Control Register
S A6 A5 A4 A3 A2 A1 A0 0
Start Condition
0
0
1
A
0
0
0
Data From MODE1 Register
Slave Address
0
R/W
0
A Sr A6 A5 A4 A3 A2 A1 A0 1
A
A
ACK From Master
R/W ACK From Slave
ACK From Slave
MODE1 Register Selection
Auto-Increment On All Registers
Auto-Increment On
ACK From Slave
Data From MODE2 Register
Data From PWM0 Register
A
Data From ALLCALLADR Register
A
ACK From Master
Data From MODE1 Register
A
ACK From Master
A
ACK From Master
ACK From Master
Data From Last Read Byte
A
P
NACK From Master
Stop Condition
Figure 18. Read All Registers Auto-Increment
2
Slave Address
Sequence A
New LED All Call I C Address
(see Note B)
Control Register
S A6 A5 A4 A3 A2 A1 A0 0
Start Condition
A
X X
X
1
1
0
1
1
A
1
1
0
1
ACK From Slave
R/W
0
1
1
X
A
ACK From Slave
P
Stop Condition
ALLCALLADR Register Selection
Auto-Increment Options
Auto-Increment Flag
ACK From Slave
2
LED All Call I C Address
Sequence B
S 1
1
0
Start Condition
1
1
0
0
1
The 16 LEDs are on at ACK (see Note C)
LEDOUT0 Register (LED3 to 0 Fully On)
Control Register
A
X X
X
1
0
1
0
R/W
0
A
0
1
0
1
ACK From the
Four Slaves
0
1
0
1
A
ACK From the
Four Slaves
P
Stop Condition
LEDOUT0 Register Selection
ACK From Slave
A.
In this example, several TLC59116 devices are used, and the same Sequence A is sent to each of them.
B.
The ALLCALL bit in the MODE1 register is equal to 1 for this example.
C.
The OCH bit in the MODE2 register is equal to 1 for this example.
Figure 19. LED All Call I2C Bus Address Programming and LED All Call Sequence
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Application Information (continued)
10.1.7 System Configuration
A device generating a message is a transmitter; a device receiving is the receiver. The device that controls the
message is the master and the devices that are controlled by the master are the slaves (see Figure 20).
SDA
SCL
Master
Transmitter/
Receiver
Slave
Receiver
Slave
Transmitter/
Receiver
Master
Transmitter/
Receiver
Master
Transmitter
I2C Bus
Multiplexer
Slave
Figure 20. System Configuration
10.1.8 Constant Current Output
In LED display applications, TLC59116 provides nearly no current variations from channel to channel and from
device to device. While IOUT ≤ 52 mA, the maximum current skew between channels is less than ±6% and less
than ±8% between devices.
10.2 Typical Application
+5V
IN
SHDN
GND
+3.3V
SENSE
OUT
...
MCU
+3.3V
SCL
SCL
VDD
SDA
SDA
OUT15
RESET
RESET
OUT14
TLC59116
OUT13
...
A0-A3
OUT1
OUT0
R-EXT
GND
REXT
931Ω
Figure 21. TLC59116 Typical Application
10.2.1 Design Requirements
Set the LED current to 20mA using the REXT resistor.
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Typical Application (continued)
10.2.2 Detailed Design Procedure
10.2.2.1 Adjusting Output Current
TLC59116 scales up the reference current (Iref) set by the external resistor (Rext) to sink the output current (Iout) at
each output port. Table 12 shows the Configuration Code and discusses bits CM, HC, and CC[5:0]. The following
formulas can be used to calculate the target output current IOUT,target in the saturation region:
VREXT = 1.26 V × VG
Iref = VREXT/Rext, if another end of the external resistor Rext is connected to ground
IOUT,target = Iref × 15 × 3CM – 1
(3)
(4)
(5)
Where Rext is the resistance of the external resistor connected to the REXT terminal, and VREXT is the voltage of
REXT, which is controlled by the programmable voltage gain (VG), which is defined by the Configuration Code.
The Current Multiplier bit (CM) sets the ratio IOUT,target/Iref to 15 or 5 (sets the exponent "CM – 1" to either 0 or
–1). After power-on, the default value of VG is 127/128 = 0.992, and the default value of CM is 1, so that the ratio
IOUT,target/Iref = 15. Based on the default VG and CM:
VREXT = 1.26 V × 127/128 = 1.25 V
IOUT,target = (1.25 V/Rext) × 15
(6)
(7)
Therefore, the default current is approximately 20mA at 931 ohms.. The default relationship after power-on
between IOUT,target and Rext is shown in Figure 1.
Figure 2 shows the output voltage versus the output current with several different resistor values on REXT. This
shows the minimum voltage required at the device to have full VF across the LED. The VLED voltage must be
higher than the VF plus the VOL of the driver. If the VLED is too high, more power will be dissipated in the driver.
If this is the case, a resistor can be inserted in series with the LED to dissipate the excess power and reduce the
thermal conditions on the driver.
If a single driver is used with LEDs that have different VF values, resistors can also be used in series with the
LED to remove the excess power from the driver. In cases where not all outputs are being used, the unused
outputs can be left floating without issue.
10.2.3 Application Curve
Figure 22 shows 20 mA of LED current along with programmed PWM dimming.
Figure 22. LED Current Set to 20 mA Through REXT
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11 Power Supply Recommendations
TLC59116 is designed to operate from a VCC range of 3 V to 5.5 V.
12 Layout
12.1 Layout Guidelines
The I2C signals (SDA / SCL) should be kept away from potential noise sources.
The traces carrying power through the LEDS should be wide enough to the handle necessary current.
All LED current passes through the device and into the ground node. There must be a strong connection
between the device ground and the circuit board ground. For the RHB package, the thermal pad should be
connected to ground to help dissipate heat.
12.2 Layout Example
Figure 23. PW Layout Example
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Layout Example (continued)
VIA to GND
A1
A0
REXT
NC
NC
VCC
SDA
SCL
To µC
A2
A3
OUT0
OUT1
OUT2
OUT3
GND
OUT4
To µC
To µC
RESET
GND
OUT15
OUT14
OUT13
OUT12
GND
OUT11
OUT10
OUT9
OUT8
NC
NC
OUT7
OUT6
OUT5
Figure 24. RHB Layout Example
The thermal relief vias are connected to the power pad of the RHB package shown in Figure 24.
12.3 Thermal Considerations
The maximum IC junction temperature should be restricted to 150°C under normal operating conditions. To
calculate the maximum allowable dissipation, PD(max) for a given ambient temperature, use the following
equation as a guideline:
PD(max) =
TJ(max) - TA
QJA
where
•
•
•
•
PD(max) = maximum allowable power dissipation
TJ(max) = maximum allowable junction temperature (150°C for the TLC59116)
TA = ambient temperature of the device
ΘJA = junction to air thermal impedance.
(8)
See Thermal Information section. This parameter is highly dependent upon board layout.
Power dissipation in the device is determined by the LED current and the voltage at the OUTx pins. For example,
if the LED current is 50 mA continuous through each channel and the output voltage is 1 V on each channel,
then the total power dissipation is 50 mA x 1 V x 16 ch = 0.8 W
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13 Device and Documentation Support
13.1 Trademarks
All trademarks are the property of their respective owners.
13.2 Electrostatic Discharge Caution
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
13.3 Glossary
SLYZ022 — TI Glossary.
This glossary lists and explains terms, acronyms, and definitions.
14 Mechanical, Packaging, and Orderable Information
The following pages include mechanical, packaging, and orderable information. This information is the most
current data available for the designated devices. This data is subject to change without notice and revision of
this document. For browser-based versions of this data sheet, refer to the left-hand navigation.
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PACKAGE OPTION ADDENDUM
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10-Dec-2020
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
(2)
Lead finish/
Ball material
MSL Peak Temp
Op Temp (°C)
Device Marking
(3)
(4/5)
(6)
TLC59116IPWR
ACTIVE
TSSOP
PW
28
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
Y59116
TLC59116IRHBR
ACTIVE
VQFN
RHB
32
3000
RoHS & Green
NIPDAU
Level-2-260C-1 YEAR
-40 to 85
Y59116
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of
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