View detail for Hardware Connections for C51 Microcontrollers

5
4
3
2
1
D
D
CAN Interfacing
VCC
2.2 K
D4
LED PWR GREEN
CAN-Tx
C
P1
R9
2
R8
R10 120
JP3
CAN Res
D3
LED PWR RED
CAN-Rx
VCC
U4
3
5
P4.1
P4.0
GND
CANL
CANH
2.2 K
RxDC
TxDC
1
CAN I/O
4
1
Vcc CANH
Vref CANL
RXD
TXD
Rs
Gnd
7
6
8
2
1
6
2
7
3
8
4
9
5
C
SUB-D9 FEMALE
CAN
AT6660
B
B
A
A
Title
C51_CAN
Size
A4
Date:
5
4
3
2
Document Number
<Doc>
Wednesday, April 28, 2004
Rev
1.0
Sheet
2
1
of
4
5
4
3
2
1
D
D
ISP Interfacing
P1
C
16
Vcc
14
7
13
8
C15
0.1µF
SUB-D9 FEMALE
RS232
R1IN
R2IN
C1+
C1C2+
C2-
Tx_MCU
11
10
T1IN
T2IN
Rx_MCU
12
9
R1OUT
R2OUT
15
C16
0.1µF
1
3
4
5
T1OUT
T2OUT
VCC
DSR
Rx_PC
RTS
Tx_PC
CTS
DTR
GND
1
6
2
7
3
8
4
9
5
P3.1/TxD
C
P3_0/RxD
Vcc
V+
2
C17
0.1µF
Vcc
6
V-
MAX202ECSE
U7
C18
0.1µF
C19
0.1µF
B
B
A
A
Title
C51_ISP
Size
A
Date:
5
4
3
Document Number
<Doc>
Wednesday, April 28, 2004
2
Rev
1.0
Sheet
3
of
1
4
5
4
3
2
1
Auto ISP Interfacing
14
7
Tx_PC
CTS
13
8
C15
0.1µF
SUB-D9 FEMALE
RS232
R1IN
R2IN
C1+
C1C2+
C2-
T1IN
T2IN
R1OUT
R2OUT
15
C16
0.1µF
1
3
4
5
T1OUT
T2OUT
VCC
DSR
Rx_PC
GND
1
6
2
7
3
8
4
9
5
D
Vcc
16
P1
V+
V-
11
10
Tx_MCU
12
9
Rx_MCU
P3.1/TxD
D
P3_0/RxD
Vcc
C17
0.1µF
2
Vcc
6
MAX202ECSE
U7
C18
0.1µF
C19
0.1µF
Vcc
C
C
R11
10k
/PSEN
R3
SW6
Q2
ISP
RTS
BC547B
10K
R1
1K
B
B
Vcc
R2
Q1
SW3
DTR
C3
1µF
10K
RESET
BC547B
RST
R7
10k
A
A
Title
C51_AUTOISP
Size
A
Date:
5
4
3
Document Number
<Doc>
Wednesday, May 05, 2004
2
Rev
1.0
Sheet
1
of
1
4
5
4
3
2
1
D
D
USB Interfacing
Vbus
J1
C
1
2
3
4
C
R5
Vbus
USB_CON_DUSB_CON_D+
GND
27
D-
D+
R4
USB B
D-
D+
27
Optional
1.5 K
R2
B
B
SW1
VREF
VREF
USB Unload
A
A
Title
C51_USB
Size
A
Date:
5
4
3
Document Number
1
Wednesday, April 28, 2004
2
Rev
1.0
Sheet
4
of
1
4