CAT9532 16-bit Programmable LED 2 Dimmer with I C Interface Description The CAT9532 is a CMOS device that provides 16bit parallel input/output port expander optimized for LED dimming control. The CAT9532 MARKING DIAGRAMS A3B LAAC AB CAT9532WI AXXX CAT9532YI 3YMXXX YMCC 3YMXXX TQFN (HV6) SOIC (W) TSSOP (Y) LAAC = Device Code A = Assembly Location A = Assembly Location 3 = MatteTin Lead Finish A = Assembly Location XXX = Last Three Digits of B = Product Revision (Fixed as B) B = Product Revision (Fixed as B) = Assembly Lot Number CAT9532W = Device Code CAT9532Y = Device Code Y = Production Year (Last Digit) I = Industrial Temperature Range I = Temperature Range M = Production Month (19, O, N, D) Y = Production Year (Last Digit) 3 = Matte-Tin Lead Finish CC = Country Code M = Production Month (19, O, N, D) Y = Production Year (Last Digit) = TH = Thailand XXXX = Last Four Digits of M = Production Month (19, O, N, D) = MY = Malaysia = Assembly Lot Number XXX = Last Three Digits of = Assembly Lot Number A0 V 1 CC A1 SDA 1 LED0 RESET A2 SCL LED1 LED15 LED0 RESET LED2 LED14 LED1 LED15 LED2 LED3 LED13 LED14 LED3 LED13 LED4 LED12 LED4 LED12 LED5 LED11 LED5 LED11 LED6 LED10 LED7 LED9 V LED8 SS SOIC (W), TSSOP (Y) TQFN (HV6) (Top View) (Top View) Figure 1. Pin Configurations 5 V 5 V 3 x 10 k RS0 RS1 RS11 V CC SDA SDA LED0 SCL SCL LED1 RESET RESET 2 CAT9532 I C/SMBus Master LED11 A2 LED12 A1 GPIOs A0 V LED15 SS Figure 2. Typical Application Circuit