CAT9552WI Datasheet, PDF (2/17 Pages) ON Semiconductor – 16-Channel I2C-bus LED Driver with Programmable Blink Rate

CAT9552
PIN CONFIGURATION
SOIC (W), TSSOP (Y)
AO 1
A1 2
24 V_CC
23 SDA
A2 3 22 SCL
LED0 4 21 RESET
LED1 5 20 LED15
LED2 6 19 LED14
LED3 7 19 LED13
LED4 8 17 LED12
LED5 9 16 LED11
LED6 10 15 LED10
LED7 11 14 LED9
V_SS 12 13 LED8
TQFN (HV6)
LED0 1
LED1 2
LED2 3
LED3 4
LED4 5
LED5 6
18 _RESET
17 LED15
16 LED14
15 LED13
14 LED12
13 LED11
PIN DESCRIPTION
SOIC / TSSOP
1
2
3
4-11
12
13-20
21
22
23
24
—
BLOCK DIAGRAM
TQFN
22
23
24
1-8
9
10-17
18
19
20
21
Pad
PIN NAME
AO
A1
A2
LED0 - LED7
V_SS
LED8 - LED15
R¯¯E¯S¯E¯T¯
SCL
SDA
V_CC
Backside pad
FUNCTION
Address Input 0
Address Input 1
Address Input 2
LED Driver Output 0 to 7, I/O Port 0 to 7
Ground
LED Driver Output 8 to 15, I/O Port 8 to 15
Reset Input
Serial Clock
Serial Data
Power Supply
For enhanced heat dissipation. Electrically this pad
must be at ground potential.
A2 A1 A0
V_CC
RESET
SCL
SDA
POWER ON
RESET
INPUT
FILTERS
I²C BUS
CONTROL
INPUT
REGISTER
LED SELECT (LSx)
REGISTER
PRESCALER 0
PWM 0
BLINK 0
LEDx
OSCILLATOR
REGISTER
PRESCALER 1
REGISTER
PWM 1
BLINK 1
CONTROL
LOGIC
V_SS
REGISTER
REGISTER
Note: Only one I/O is shown for clarity
CAT9552
Doc. No. MD-9005 Rev B
2
© 2008 SCILLC. All rights reserved
Characteristics subject to change without notice