etekronics.com atmega128 development board schematic
DESCRIPTION
Schematic and layout of the Atmel ATMEGA128 development board sold by Etekronics.com.TRANSCRIPT
![Page 1: Etekronics.com ATMEGA128 Development Board Schematic](https://reader035.vdocuments.us/reader035/viewer/2022081715/5469a841b4af9fe4538b48fc/html5/thumbnails/1.jpg)
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
D D
C C
B B
A A
Title
Number RevisionSize
A3
Date: 30/10/2006 Sheet ofFile: D:\EDA Projects\..\ATMEGA128.SCHDOCDrawn By:
PEN1
PE0 (RXD0/PDI)2
PE1 (TXD0/PDO)3
PE2 (XCK0/AIN0)4
PE3 (OC3A/AIN1)5
PE4 (OC3B/INT4)6
PE5 (OC3C/INT5)7
PE6 (T3/INT6)8
PE7 (IC3/INT7)9
PB0 (SS)10
PB1 (SCK)11
PB2 (MOSI)12
PB3 (MISO)13
PB4 (OC0)14
PB5 (OC1A)15
PB6 (OC1B)16
PB7 (OC2/OC1C)17
TOSC2/PG318
TOSC1/1PG419
RESET20
VCC 21
GND 22
XTAL223
XTAL124
PD0 (SCL/INT0)25
PD1 (SDA/INT1)26
PD2 (RXD1/INT2)27
PD3 (TXD1/INT3)28
PD4 (IC1)29
PD5 (XCK1)30
PD6 (T1)31
PD7 (T2)32
PG0 (WR)33
PG1 (RD)34
PC0 (A8) 35
PC1 (A9) 36
PC2 (A10) 37
PC3 (A11) 38
PC4 (A12) 39
PC5 (A13) 40
PC6 (A14) 41
PC7 (A15) 42
PG2 (ALE)43
PA7 (AD7) 44PA6 (AD6) 45PA5 (AD5) 46PA4 (AD4) 47PA3 (AD3) 48PA2 (AD2) 49PA1 (AD1) 50PA0 (AD0) 51
VCC 52
GND 53
PF7 (ADC7/TDI) 54
PF6 (ADC6/TDO) 55
PF5 (ADC5/TMS) 56
PF4 (ADC4/TCK) 57
PF3 (ADC3) 58
PF2 (ADC2) 59
PF1 (ADC1) 60
PF0 (ADC0) 61
AREF 62
GND 63
AVCC 64
U1
ATmega128-16AC
VCC
C1
0.1uF
C2
0.1uFC3
0.1uF
R1
10
R2
10
VCC
C422p
C522p
1 2Y1
16MHz
R3
10K
VCC
1 23 45 67 89 10
J1
PORTA
1 23 45 67 89 10
J2
PORTB
1 23 45 67 89 10
J3
PORTC
1 23 45 67 89 10
J4
PORTD
1 23 45 67 89 10
J5
PORTE
1 23 45 67 89 10
J6
PORTF
VCC
PA1PA3PA5PA7
PA0PA2PA4PA6
VCC
VCC
VCC
VCC
VCC
PB0PB2PB4PB6
PC0PC2PC4PC6
PB1PB3PB5PB7
PC1PC3PC5PC7
PD0PD2PD4PD6
PE0PE2PE4PE6
PF0PF2PF4PF6
PD1PD3PD5PD7
PE1PE3PE5PE7
PF1PF3PF5PF7
PA0PA1PA2PA3PA4PA5PA6PA7
PC0PC1PC2PC3PC4PC5PC6PC7
PF7PF6PF5PF4PF3PF2PF1PF0
PB0PB1PB2PB3PB4PB5PB6PB7
PD0PD1PD2PD3PD4PD5PD6PD7
PE0PE1PE2PE3PE4PE5PE6PE7
1 23 45 67 89 10
J7
ISP
VCC
PE0
RSTPB1PE1
1 23 45 67 89 1011 1213 14
J8
Header 7X2
PG0PG2
PG1PG3
PG4PD7
VCC
R410K
VCC
PG3PG4
PG0PG1PG2
RST
R510K
S1RESET
VCC
RST
C1+ 1VDD2
C1- 3
C2+ 4
C2- 5
VEE6
T2OUT7
R2IN8 R2OUT 9
T2IN 10T1IN 11
R1OUT 12R1IN13
T1OUT14
GND 15
VCC16
U2
MAX232
10uFC9
10uF
C7
10uF
C810uF
C6
VCC
10uFC10
VCC
1234 5
678
S2
SW-DIP4
PD3PD2PE1PE0
1
2
3
4
5
6
7
8
9
11
10
J9
RS232
1
2
3
4
5
6
7
8
9
11
10
J10
RS232
12
J11
7-12 VDC
D1
1N4001C1222p
C1422p
C11100uF/25V
C1310uF
IN1
3
OUT 2
GND
U37805
VCC
C150.1uF
LED0
RED
R6
2.2K
VCC
1 23 45 67 89 10
J12
JTAG
PF4PF6PF5
PF7
VCC
RST
VCC
![Page 2: Etekronics.com ATMEGA128 Development Board Schematic](https://reader035.vdocuments.us/reader035/viewer/2022081715/5469a841b4af9fe4538b48fc/html5/thumbnails/2.jpg)