5 4 3 2 1 Revision History Rev 0.1 - Original Rev 0.2 - Fixed Ref. Designator for MGA (changed from J1 to P1) Rev 0.3 - Fixed schematic name to match kit name CY3250-23X33QFN POD Schematic D U1 P1_7 P1_5 P1_3 PX1_1 NC23 P0_7 P0_5 P0_3 P0_1 P2_7 P2_5 P2_3 P2_1 NC1 P3_0 NC2 NC3 OCDE OCDO NC4 NC5 NC6 NC7 NC8 NC9 NC10 P1_7 P1_5 NC11 P1_3 P1_1 VSS VDD P0_6 P0_4 P0_2 P0_0 P2_6 P2_4 P2_2 P2_0 NC22 NC21 NC20 NC19 CCLK HCLK XRES NC18 NC17 NC16 P3_1 NC15 NC14 P1_6 P1_4 P1_2 P1_0 NC13 NC12 23533 OCD SSOP 56-Pin 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 P0_6 P0_4 P0_2 P0_0 P2_6 P2_4 P2_2 P2_0 VCC VCC P1 C1 0603 NO LOAD R1 P2_7 P2_5 P2_3 P2_1 C2 0603 NO LOAD R2 Y1 P1_0 P1_1 0603 OCD_DE OCD_DO 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 0603 P0_7 P0_5 P0_3 P0_1 P2_7 P2_5 P2_3 P2_1 D This circuit added to allow for addtion of a precision external crystal. VCC zero 32.768KHz XTAL NO LOAD OCD_CCLK OCD_HCLK OCD_RESET zero PX1_0 P1_6 P1_4 P1_2 PX1_0 PX1_1 VCC VCC VCC C3 C 0603 0.1 uFd C4 0603 0805 0.1 uFd CY8C23433-24PVXI C5 10 uFd Ceramic 0805 Bypass caps for PSoC and MGA 1 2 3 4 5 6 P1_7 7 P1_5 8 9 P1_3 10 P1_1 11 12 P1_0 13 P1_2 14 P1_4 15 16 P1_6 17 OCD_RESET 18 P2_0 19 P2_2 20 P2_4 21 P2_6 22 P0_0 23 P0_2 24 25 P0_4 26 P0_6 27 28 P0_7 29 P0_5 30 P0_3 31 P0_1 32 33 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 C MGA MALE D1 VCC R3 1206 0603 1K LED Green R4 ICE_DE OCD_DE 0603 56 VCC R5 2.00K 1% NO LOAD 0603 C6 0603 R6 VCC OCD_DO J1 0603 B 2 4 6 8 10 12 14 16 18 20 1 3 5 7 9 11 13 15 17 19 56 ICE_DO C7 0603 ICE_RST NO LOAD ICE_HCLK R7 B ICE_CCLK OCD_CCLK 0603 ICE_DE 56 C8 20 Pin Hirose Recp 0603 NO LOAD R8 zero ICE_RST OCD_RESET 0603 C9 100 pFd R9 1K 0603 0402 R10 ICE_HCLK OCD_HCLK 0603 56 0603 C10 NO LOAD A A PCB: PDCR-9435 ** PCA: 121R-43500 ** CYPRESS SEMICONDUCTOR © 2007 Title CY3250-23X33QFN POD Size C Date: 5 4 3 2 Document Number REF-14639 Rev 0.2 Wednesday, May 14, 2008 Sheet 1 1 of 1