3V3 3V3 PROGRAMMING I/F TTL232R-3V3 3V3 R8 220R C5 J1 AVCC C1 68pF Y1 12MHz GND 5 BDBUS0 BDBUS1 BDBUS2 BDBUS3 BDBUS4 BDBUS5 BDBUS6 BDBUS7 XTOUT C2 68pF GND 7 PROG# 8 AGND 11 12 13 14 15 16 18 19 LP1 DUAL LED 330R R12 330R R13 330R R14 330R LP2 DUAL LED 20 21 22 23 PB2 SPNO R9 10k PB3 SPNO FILE COPY 2 3 1 4 10k R16 10k R17 10k PB4 SPNO FILE TRANSFER LP4 DUAL LED LP3 DUAL LED R15 3V3 PWRSW# POWER OFF PB1 SPNO PWR ON GND GND GND GND D2 5V0 TTLPWR D1 LL4148 LL4148 R20 4 2 330R LP5 DUAL LED GND 3V3 C6 100nF MCP1700T3302 REG1 3 I G O C8 100nF 1 GND C9 100nF C10 100nF GND PWR LED 3 1nF R11 6 C4 GND 27 GND PWRON LBO# TEST 180R GND R7 PLLFLTR GND 10nF BCBUS0 BCBUS1 BCBUS2 BCBUS3 1 C3 PROG# 24 10k 10 RESET# GND R6 10k GND R5 RESET# 39 3V3 9 4 XTIN CON6 41 42 43 44 45 46 47 48 1 3 2 VCORE 17 30 ACBUS0 ACBUS1 ACBUS2 ACBUS3 ACBUS4 ACBUS5 ACBUS6 ACBUS7 3V3 2 4 USB2DP 3V3 3 28 CON8 GND 1 27R USB2DM TXD RXD RTS# CTS# 4 R4 29 RTS# TTLPWR RXD TXD CTS# 2 USB2DP 27R USB1DP 31 32 33 34 35 36 37 38 1 1 2 3 4 5 6 ADBUS0 ADBUS1 ADBUS2 ADBUS3 ADBUS4 ADBUS5 ADBUS6 ADBUS7 1 2 3 4 5 6 7 8 2 J2 USB1DM RESET# PROG# 3 R3 25 R10 10k 3 USB2DM 27R GND R19 10k 4 R2 26 R18 10k 2 USB1DP 27R 5V0 PWRON PWRSW# RESET# LBO# 3V3 1 R1 USB1DM VCCIO CON6 GND VCCIO 40 U1 VNC1-1A VCCIO USB1DM USB1DP USB2DM USB2DP 100nF J3 1 2 3 4 5 6 GND GND GND C7 10uF 6.3v GND VINCULUM BACKUP FOR DIGITAL CAMERA / MP3 TO USB FLASH DRIVE SCHEMATIC ( B ) GND GND