5 4 3 2 VDD ( 1 VDD 1.71 - 5.50 V) D VDD CS0 CS1 CS2 Cint Cint VDD C1 0.1 uFd 560E 560E 560E Cint B2 CS1 B3 CS2 B4 CS3 B5 CS4 B6 CS5 U1 GND VSS_1 P0[3] P0[5] P0[7] Vdd P0[6] P0[4] P0[2] CS0 LED0 LED1 LED2 LED3 LED4 LED5 1 2 3 4 5 6 7 330E 8 D1 LED1 R2 1K D2 LED2 R6 1K D3 LED3 R7 1K D4 LED4 R8 1K D5 P0[1] P0[0] P2[7] P2[6] P2[5] P2[4] P2[3] CY8C20466A-24LQXI P2[2] P2[1] P2[0] P3[3] P3[2] P3[1] P3[0] P1[7] XRES 24 23 22 21 20 19 18 17 R9 R11 R12 CS3 CS4 CS5 560E 560E 560E LED5 R10 1K D6 C XRES VDD R17 330E D7 ISSP_SDA CAPSENSE BUTTONS(INPUT] ISSP_SCL 330E R14 9 10 R15 11 12 R16 13 14 15 16 330E I2C_SDA B D Active Low Configuration (OUTPUT] P1[5] P1[3] P1[1] VSS P1[0] P1[2] P1[4] P1[6] I2C_SCL R13 1K 1K C B1 R1 33 32 31 30 29 28 27 26 25 R3 R4 R5 ( CSD CMOD = 2.2nF) ( CSA CMOD = 1.2nF) LED0 CY8C20466A CAPSENSE CONTROLLER BLOCK B POWER LED VDD GND XRES ISSP_SCL ISSP_SDA GND XRES I2C_SCL I2C_SDA R19 VDD 1 2 3 4 5 DNP DNP 4.7K 1 2 3 4 5 R18 J2 VDD 4.7K J1 A A PROGRAMMING I2C Title Button design with I2C header on CY8C20466A PROGRAMMING HEADER I2C HEADER Size A Date: 5 4 3 Document Number Wednesday, October 12, 2011 2 Rev ** Sheet 1 of 1 1