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Appendix C: Board Schematics
AT89STK-06 Demo Board User Guide 4-17
4339B–CAN–11/04
Figure 4-5. AT89STK-06 Board Schematics (3 of 4)
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
TxDC
RxDC
CANH
CANL
GND
CTS
DSR
RTS
DTR
DCD
Rx_PC
Rx_MCU
Tx_PC
VCC VCC
AGND
VCC
Vcc
VCC
Vcc
Vcc
Vcc
Vcc
Vcc
Vcc
VCC
Vcc
P4.1
P4.0
ADC_Temp
ADC_Pot
P3.5
P4.2
P4.3
P4.4
ISP_mode
TX_UART
/RST_UART
RX_UART
VAREF
Title
Size Document Number Rev
Date: Sheet
of
<Doc> 1.0.0
CC0x_demob/Interfaces
A4
34Thursday, January 08, 2004
Title
Size Document Number Rev
Date: Sheet of
<Doc> 1.0.0
CC0x_demob/Interfaces
A4
34Thursday, January 08, 2004
Title
Size Document Number Rev
Date: Sheet of
<Doc> 1.0.0
CC0x_demob/Interfaces
A4
34Thursday, January 08, 2004
ADC
CAN I/O
SPI Interface
SS
MISO
SCK
MOSI
GND
VCC
ADC
RS232 I/O
AT6660
MAX202ECSEMAX202ECSE 74HC125/SO
DECOUPLING CAPACITOR
CLOSE TO THE DEVICE
Negative Temperature
Coefficient Resistor
Not
Mounted
C26
100 nF
C26
100 nF
5 6
4
U6B
74HC125/SO
U6B
74HC125/SO
1
TP2
VPot
TP2
VPot
1
TP3
VTemp
TP3
VTemp
R15
1.2 K
R15
1.2 K
D6
LED PWR RED
RS-Rx
D6
LED PWR RED
RS-Rx
C11
10 nF
C11
10 nF
D5
LED PWR GREEN
RS-Tx
D5
LED PWR GREEN
RS-Tx
C17
0.1 µF
C17
0.1 µF
C24
100 nF
C24
100 nF
1 2
JP4
RTS
JP4
RTS
1
TP1
VRef
TP1
VRef
R14
1.2 K
R14
1.2 K
RXD
4
TXD
1
CANH
7
CANL
6
Vcc
3
Vref
5
Gnd
2
Rs
8
U4
AT6660
U4
AT6660
C27
100 nF
C27
100 nF
C1+
1
C1-
3
C2+
4
C2-
5
VCC
16
GND
15
V+
2
V-
6
R1OUT
12
R2OUT
9
T1IN
11
T2IN
10
R1IN
13
R2IN
8
T1OUT
14
T2OUT
7
U5
MAX202ECSE
U5
MAX202ECSE
R10 120R10 120
5
9
4
8
3
7
2
6
1
P2
SUB-D9 FEMALE
RS232
P2
SUB-D9 FEMALE
RS232
C13
0.1 µF
C13
0.1 µF
C19
0.1 µF
C19
0.1 µF
1 2
JP5
DTR
JP5
DTR
Vin
1
Vout
5
GND
2
U3 MAX6129BEUK33TU3 MAX6129BEUK33T
C9
100 nF
C9
100 nF
C12
100 nF
C12
100 nF
C21
0.1 µF
C21
0.1 µF
C15
0.1 µF
C15
0.1 µF
R13
NCP18WF104J03RB
R13
NCP18WF104J03RB
5
9
4
8
3
7
2
6
1
P1
SUB-D9 FEMALE
CAN
P1
SUB-D9 FEMALE
CAN
R9
1.2 K
R9
1.2 K
C22
0.1 µF
C22
0.1 µF
2 3
1
U6A
74HC125/SO
U6A
74HC125/SO
C14
0.1 µF
C14
0.1 µF
D3
LED PWR RED
CAN-Rx
D3
LED PWR RED
CAN-Rx
C10
100 nF
C10
100 nF
C20
0.1 µF
C20
0.1 µF
D4
LED PWR GREEN
CAN-Tx
D4
LED PWR GREEN
CAN-Tx
R8
1.2 K
R8
1.2 K
R11
100 K
R11
100 K
R12
10k pot
R12
10k pot
C23
0.1 µF
C23
0.1 µF
9 8
10
U6C
74HC125/SO
U6C
74HC125/SO
1
2
3
4
5
6
J3
SPI Male
J3
SPI Male
1 2
JP3
CAN Res
JP3
CAN Res
C16
0.1 µF
C16
0.1 µF
C1+
1
C1-
3
C2+
4
C2-
5
VCC
16
GND
15
V+
2
V-
6
R1OUT
12
R2OUT
9
T1IN
11
T2IN
10
R1IN
13
R2IN
8
T1OUT
14
T2OUT
7
U7
MAX202ECSE
U7
MAX202ECSE
C25
100 nF
C25
100 nF
C18
0.1 µF
C18
0.1 µF
12 11
13
U6D
74HC125/SO
U6D
74HC125/SO