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240-1018-1 1 FB1 CN1 1 2 3 4 USB Conn. USBGND E3 1 C10 .01

2200p .1

240-1018-1 1 FB1 CN1 1 2 3 4 USB Conn. USBGND E3 1 C10 .01
C1 2 USBVCC C3 10 / 10 Tant Q1 2N3904 C7 2200p .033 2200p R4 10K 2200p U2 7 USBDP USBDM 3V3OUT XTIN C11 C12 R6 10 30 13 26 R5 1.5K C13 3 .1 SW1 Program Mode USBVCC R1 470 E2 2200p C5 C6 C8 C9 .1 UPRST RXF# TXE# .1 1 SWVCC C4 .1 R2 100K 1 LED R3 360 / 0603 D1 E1 SWVCC U1 1 Vdd 20 C2
2200p .1
SWGND
RA5 RA4 RA3 RA2 RA1 RA0 RB0 RB1 RB2 RB3 RB4 RB5 RB6 / PGC RB7 / PGD PIC16F872
RC7 RC6 RC5 RC4 RC3 RC2 RC1 RC0 Vss Vss OSC2 OSC1 MCLR
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SWGND . . CR1 20MHz 2
1 E6 1 1 R7 10 RESET#
SWGND D0 D1 D2 D3 D4 D5 D6 D7 RD# WR TXE# RXF# 25 24 23 22 21 20 19 18 U3A MM74HC08M 16 15 14 12 3 TXE# RXF# 7 2 14 1
1 VPPSW
SWGND
R8 SWVCC SWVCC R9 100K
JP1 SWGND 1 2 3 4 PROGRAMMING HEADER
Q2 2N3904 / SOT23
USB Interface
CR2 6MHz
XTOUT RCCLK RESET# EECS EESK EEDATA TEST FT8U245AM
Mode 877 Mode 877 Mode 84A
JP3 EXTRST# USBGND DO4 DO5 DO6 DO7 SWGND RCI4 RCI5 RCI6 RCI7 SWVCC SLEEP# RB0 / INT SWGND RA3 RA4 RA5 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 UPRST USBVCC DO0 DO1 DO2 DO3 SWGND RCI0 RCI1 RCI2 RCI3 SWGND SW2 RE0 RE1 RE2 SWGND RA0 RA1 RA2
1 2 JP2 Switch Disable
EEREQ# AGND GND GND EEGNT#
USBVCC 6
SWVCC C15 2200p C27 2200p C28 .1 C16 .1
USBVCC 100K
U3B MM74HC08M
SWGND U5 PIC16F877 RE0 RE1 RE2 RCI3 RCI4 RCI5 RCI6 RCI7 RB0 / INT DOUT RXF# TXE# 9 10 11 20 25 26 27 29 36 37 38 39 41 42 43 44 E0 E1 E2
E8 1 2 3 4 CS CLK DI DO VCC GND 8 USBVCC
C17 R14 100K 14 U7 2 3 VCC RST GND MCP809T-460 / SOT23 EXTRST# 7 1 4 6 5
.1 R15 2.2K
USBVCC
U6 93C46 R16 10K
C18 0.1uF
SWVCC 1 1 E12 E11 R12 100K R13 100K
U4B 74HC00 9
RESET# 12 8
14 11 13 U4D 74HC00 JP4 HEADER 2
U4C 74HC00
Vss Vss
SLEEP#
RC3 RC4 RC5 RC6 RC7 RB0 / INT RB1 OSC1 / CLKIN RB2 OSC2 / CLKOUT RB3 RB4 RB5 RB6 / PGC MCLR RB7 / PGD 34 13
D0 D1 D2 D3 D4 D5 D6 D7 RC2 / CCP1 RC1 / T1OSI / CCP2 RC0 / T1OSO / T1CKI RA0 / AN0 RA1 / AN1 RA2 / AN2 / VREF RA3 / AN3 / VREF+ RA4 / TOCKI RA5 / AN4 / SS
VDD VDD
NC3 NC2 NC1 NC
D0 D1 D2 D3 D4 D5 D6 D7 RCI1 RCI2 RCI0 RA0 RA1 RA2 RA3 RA4 RA5
SW2 Test Switch
SWGND
HEADER 20X2 14 15 1 3 . . . 2 SWGND
CR3 20MHz 2
L1 SWVCC 10uH C19 4.7uF
D2 BAT54CT
E13 SW13V
USBVCC R17 10K U8 R18 10K 4 Q3 2N3904 3 2 R22 10K 1 NDS8958 / SO
E14 E16 E17 E21 SWVCC SWGND E22 E23 1
SWGND
E18 1 1 R19 D3 BAV70ZXCT / SOT23 R21 220 SW13V 100K
R20 10K C20 1uF R23 1.1K
SLEEP#
E19 E20
SWVCC
VPPSW
E24 E25
LT1615 2 SWGND
R24 100 Q4 BSS123NCT
UPRST SWGND
Mode 84A
DOUT DIN
11 1 1 13 7 U3D MM74HC08M 1 SWGND GND OE CLK 11 DOUT R28 360 / 0603
E29 E30 10 D4 SWVCC LED
RXF# TXE# MUXG2A MUXB MUXA MUXG2A D0 D1 U13 D2 MM74HC138 / SSOP D3 D4 D5 SWGND D6 D7
MUXA MUXB
RA4 / TOCKI RA3 RA2 RA1 OSC2 / CLKOUT RA0 OSC1 / CLKIN RB0 RB1 RB2 RB3 RB4 RB5 RB6 / PGD RB7 / PGC MCLR
U3C MM74HC08M
SWGND
SWGND 1 GND OE CLK 11 DIN
PIC16F84A 5
0.1uF 14
SWVCC
SWGND