ATmega8最小系统

1

2

3

4

A VCC VCC

A

PIR102 PIR101

COR1 R1
10K USB

COCON2 CON2
1 2

PIC302 PIC301

COC3 C3
1uF VCC

PIC402 PIC401

PICON201 PICON20

COC4 C4
100nF RESET PIU201 1 RESET RXD TXD INT0 INT1 XCK/T0 VCC GND

COU2 U2
ADC5/SCL ADC4/SDA ADC3 ADC2 ADC1 ADC0 GND AREF AVCC SCK MISO MOSI/OC2 OC1B OC1A ATmega8 28 PIU2028 27 PIU2027 26 PIU2026 VCC 25 PIU2025 24 PIU2024 23 PIU2023 22 PIU2022 21 PIU2021 20 PIU2020 19 PIU2019SCK 18 PIU2018MISO 17 PIU2017MOSI 16 PIU2016 15 PIU2015 GND GND

NLRX RX
GND
NLTX TX

COC6 C6
PIC601 PIC602

2 PIU202 3 PIU203 4 PIU204 5 PIU205

B

PIC201 PIC202
COCON1 CON1
9 PICON109 8 PICON108 7 PICON107 6 PICON106 GND 5 PICON105 GND 4 PICON104 R2IN 3 PICON103 T2OUT 2 PICON102 1 PICON101

COC2 C2
1uF

220uF

B

COU1 U1 NLC10 PIU101 C1+ 1 C1+ NLVS0 VS+ 2 NLVCC VCC 15 NLGND GND PIU1015
16 VCC PIU1016

PIC901 PIC902

COC9 C9
1uF

PIC101 PIC102

NLC10 C1COC1 C1
1uF

NLC20 PIU104 C2+ 4 NLC20 PIU105 C25 NLVS0 PIU106 VS6 NLT2OUT 7 T2OUT

PIU102 3 PIU103

NLR2INPIU108 R2IN 8

PIU107

VS+ C1C2+ C2VST2OUT R2IN

GND 14 T1OUT PIU1014 13 R1IN PIU1013 12 R1OUT PIU1012 11 T1IN PIU1011 10 T2IN PIU1010 9 R2OUT PIU109

PIC501 PIC502
GND TX RX

COC5 C5
100nF VCC GND

6 PIU206 7 PIU207 8 PIU208

COC7 C7
PIC701 PIC702

NLXTAL1 XTAL1PIU209 9

PIC10 2 PIC10 1

MAX232 22pF
COC10 C10

XTAL1/TOSC1 XTAL2/TOSC2 T1 AIN0 AIN1 ICP1

1uF

PIY10 COY1
PIY102

1

NLXTAL2 XTAL2

10 PIU2010 11 PIU2011 12 PIU2012 13 PIU2013 14 PIU2014

NLMOSI MOSI

COCON3 CON3
PICON301

VCC

COC8 C8
C GND GND
PIC801 PIC802

2

Y1 XTAL 8M

NLXTAL PICON303 XTAL

1

NLRESETPICON305 3 RESET NLSCK PICON307 5 SCK NLMISO PICON309 7 MISO
9

2 4 6 8 10

PICON302 PICON304
PICON306 PICON308 PICON3010

C

22pF

D

Title

D Number Revision

Size A4 Date: File: 1 2 3

2010-3-24 E:\ \..\max232_20100324.SchDoc

Sheet of Drawn By: 4

Comment 1uF

Description Polarized Capacitor (Radial) Polarized Capacitor (Radial) Capacitor Polarized Capacitor (Radial) Polarized Capacitor (Radial) Capacitor Header, 9-Pin

Designator

Footprint RB7.6-15 RB7.6-15

LibRef Cap Pol1 Cap Pol1 Cap Cap Pol1 Cap Pol1 Cap Header 9 Header 2H Header 5X2 Res2 max232_20100324 U3 XTAL 2 3 1 1 1 2 1 1 1 1 1 1 1

Quantity

BCC1 BCC2
C1, C10 C2, C3, C9

100nF 100nF 220uF 22pF

BCC4 RAD-0.3 C4

BCC5 BCC6
C5 C6

RB7.6-15 RB7.6-15

C7, C8 BCC7 RAD-0.3 CON1 BCCON1 HDR1X9

USB

Header, 2-Pin, Right CON2 Angle Header, 5-Pin, Dual CON3 row Resistor

BCCON2 BCCON3

HDR1X2H HDR2X5

10K MAX232 ATmega8 XTAL 8M

Crystal Oscillator

R1 BCR1 AXIAL-0.4 U1 BCU1 U2 BCU2 Y1 BCY1 R38


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