CAT9532 ONSEMI [ON Semiconductor], CAT9532 Datasheet

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CAT9532

Manufacturer Part Number
CAT9532
Description
16-bit Programmable LED Dimmer with I2C Interface
Manufacturer
ONSEMI [ON Semiconductor]
Datasheet

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16-bit Programmable LED Dimmer with I
FEATURES
APPLICATIONS
For Ordering Information details, see page 17.
© 2010 SCILLC. All rights reserved
Characteristics subject to change without notice
* Catalyst Semiconductor is licensed by Philips Corporation to
– frequency: 0.593Hz to 152Hz
– duty cycle: 0% to 99.6%
16 LED drivers with dimming control
256 brightness steps
16 open drain outputs drive 25 mA each
2 selectable programmable blink rates:
I/Os can be used as GPIOs
400kHz I
2.3V to 5.5V operation
5V tolerant I/Os
Active low reset input
RoHS-compliant 24-Lead SOIC, TSSOP and
24-pad TQFN (4 x 4mm) packages
Backlighting
RGB color mixing
Sensors control
Power switches, push-buttons
Alarm systems
carry the I
2
2
C Protocol.
C bus compatible*
1
DESCRIPTION
The CAT9532 is a CMOS device that provides 16-bit
parallel input/output port expander optimized for LED
dimming control. The CAT9532 outputs can drive
directly 16 LEDs in parallel. Each individual LED may
be turned ON, OFF, or blinking at one of two
programmable rates. The device provides a simple
solution for dimming LEDs in 256 brightness steps for
backlight and color mixing applications. The CAT9532
is suitable in I
where it is necessary to limit the bus traffic or free-up
the bus master’s timer.
The CAT9532 contains an internal oscillator and two
PWM signals that drive the LED outputs. The user can
program the period and duty cycle for each individual
PWM signal.
program the Blink Rate 1 and Blink Rate 2 (frequency
and duty cycle), only one command from the bus master
is required to turn each individual open drain output ON,
OFF, or cycle at Blink Rate 1 or Blink Rate 2. Each
open drain LED output can provide a maximum output
current of 25mA. The total current sunk by all I/Os must
not exceed 200mA.
TYPICAL APPLICATION CIRCUIT
I
Notes:
2
C/SMBus
RESET
Master
5 V
SDA
SCL
LED0 to LED11 are used as LED drivers
LED12 to LED15 are used as regular GPIOs
2
2
C Interface
C and SMBus compatible applications
After the initial set-up command to
3 x 10kΩ
SDA
SCL
RESET
A2
A1
A0
V
SS
CAT9532
V
CC
LED12
LED15
LED11
LED0
LED1
RS0
CAT9532
Doc. No. MD-9001 Rev. E
RS1
RS11
GPIOs
5 V

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CAT9532 Summary of contents

Page 1

... Characteristics subject to change without notice 2 C Interface DESCRIPTION The CAT9532 is a CMOS device that provides 16-bit parallel input/output port expander optimized for LED dimming control. The CAT9532 outputs can drive directly 16 LEDs in parallel. Each individual LED may be turned ON, OFF, or blinking at one of two programmable rates ...

Page 2

... REGISTER 2 TQFN (HV6, HT6 LED0 RESET 2 LED1 17 LED15 LED2 3 16 LED14 4 LED3 15 LED13 5 LED4 14 LED12 6 LED5 13 LED11 INPUT REGISTER LED SELECT (LSx) REGISTER BLINK 0 CONTROL LOGIC BLINK 1 CAT9532 © 2010 SCILLC. All rights reserved Characteristics subject to change without notice LEDx ...

Page 3

... Exposure to any absolute maximum rating for extended periods may affect device performance and reliability. © 2010 SCILLC. All rights reserved Characteristics subject to change without notice (1) = 25º CAT9532 Ratings Units -2.0 to +7.0 V -0.5 to +5.5 V ±25 ...

Page 4

... CAT9532 D.C. OPERATING CHARACTERISTICS V = 2.3 to 5.5V 0V -40ºC to +85ºC, unless otherwise specified Symbol Parameter Supplies V Supply Voltage CC I Supply Current CC I Standby Current stb Δ I Additional Standby Current stb (1) V Power-on Reset Voltage POR ¯¯¯¯¯¯ ...

Page 5

... The full delay to reset the part will be the sum of t © 2010 SCILLC. All rights reserved Characteristics subject to change without notice (1) Standard I Min Max 4 4.7 4 4.7 0 250 1000 4 4.7 100 and the RC time constant of the SDA line. RESET 5 CAT9532 Fast I C Units Min Max 100 400 kHz 0.6 µs 1.3 µs 0.6 µs 0.6 µs 0 µ ...

Page 6

... External Reset Input RESET Active low Reset input is used to initialize the . CAT9532 internal registers and the I CC The internal registers are held in their default state while Reset input is active. An external pull-up resistor of maximum 25kΩ is required when this pin is not actively driven ...

Page 7

... CAT9532 for a read or write operation. The four most significant bits of the slave address are fixed as binary 1100 (Figure 3). The CAT9532 uses the next three bits as address bits. The address bits A2, A1 and A0 are used to select which device is accessed from maximum eight devices on the same bus ...

Page 8

... When the CAT9532 begins a READ mode it transmits 8 bits of data, releases the SDA line, and monitors the line for an acknowledge. Once it receives this acknowledge, the CAT9532 will continue to transmit data ...

Page 9

... The LED output (LED0 to LED15) is set by the 2 bits value from the corresponding LSx Register ( 3 LED Output set Hi-Z (LED Off – Default LED Output set LOW (LED On LED Output blinks at BLINK0 Rate 11 = LED Output blinks at BLINK1 Rate 9 CAT9532 ...

Page 10

... CAT9532 Write Operations Data is transmitted to the CAT9532 registers using the write sequence shown in Figure 6. If the AI bit from the command byte is set to “1”, the CAT9532 internal registers sequentially. After sending data to one register, the next data byte will be sent to the next register sequentially addressed ...

Page 11

... The device reset state for V threshold level (V level, the reset state is released and the CAT9532 internal state machine and registers are initialized to their default state. Data From Port ...

Page 12

... Write LS3: LED12 to LED15 = OFF 12 STOP V LED0 CC LED1 LED2 LED3 LED4 LED5 LED6 LED7 CAT9532 LED8 LED9 LED10 LED11 LED12 LED13 LED14 LED15 Note: LED0 to LED11 are used as LED drivers and LED12 to LED15 are used as regular GPIOs. Figure 10. Typical Application ...

Page 13

... Complies with JEDEC MS-013. © 2010 SCILLC. All rights reserved Characteristics subject to change without notice SYMBOL MIN A 2.35 A1 0.10 A2 2. 0.20 D 15.20 E 10. 0.25 L 0.40 θ 0° θ1 5° θ END VIEW 13 CAT9532 NOM MAX 2.65 0.30 2.55 0.51 0.33 15.40 10.51 7.60 1.27 BSC 0.75 1.27 8° 15° θ1 θ1 c Doc. No. MD-9001 Rev. E ...

Page 14

... CAT9532 (1)(2) TSSOP 24-Lead 4.4mm (Y) e TOP VIEW SIDE VIEW Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC MO-153. Doc. No. MD-9001 Rev θ1 14 SYMBOL MIN NOM MAX A 1 .20 A1 0.05 0.15 A2 0.80 1.05 b 0.19 0.30 c 0.09 0.20 D 7.70 7.80 7.90 E 6.25 6.40 6.55 E1 4.30 4.40 4.50 e 0.65 BSC L 1.00 REF L1 0.50 0.60 0.70 θ1 0° 8° ...

Page 15

... Minimum space between leads and flag cannot be smaller than 0.15 mm. © 2010 SCILLC. All rights reserved Characteristics subject to change without notice SIDE VIEW MAX 0.80 0.05 L 0.30 2.90 2.90 0. CAT9532 DETAIL A PIN DETAIL A A3 FRONT VIEW Doc. No. MD-9001 Rev. E ...

Page 16

... CAT9532 (1)(2)(3) TQFN 24-Lead 4 x 4mm (HT6) D PIN#1 INDEX AREA SYMBOL MIN NOM A 0.70 0.75 A1 0.00 — A3 0.20 REF b 0.20 0.25 D 4.00 BSC D2 2.00 — E 4.00 BSC E2 2.00 — e 0.50 BSC L 0.30 — Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC standard MO-220 (3) Minimum space between leads and flag cannot be smaller than 0.15 mm. ...

Page 17

... The standard plated finish is Matte-Tin for SOIC and TSSOP packages. The standard plated finish is NiPdAu for TQFN package. (3) The device used in the above example is a CAT9532WI-T1 (SOIC, Industrial Temperature, Matte-Tin, Tape & Reel). (4) For additional temperature options, please contact your nearest ON Semiconductor Sales office. ...

Page 18

... N. American Technical Support: 800-282-9855 Toll Free USA/Canada Europe, Middle East and Africa Technical Support: Phone: 421 33 790 2910 Japan Customer Focus Center: Phone: 81-3-5773-3850 18 CAT9532 and Fast Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative Doc ...

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