Difference between revisions of "Hardware/Enut1/Ports"

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(Created page with "<div id="content"> = Ethernut 1 Ports = == Expansion Port == [[File:../../../img/ethernut13h-expansion-pins.png]]<br /> {| ! Pin ! Signal ! Description |- | 1 | '''N/C'''...")
 
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== Expansion Port ==
 
== Expansion Port ==
  
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Revision as of 17:25, 13 July 2017

Ethernut 1 Ports

Expansion Port

Ethernut13h-expansion-pins.png

Pin Signal Description
1 N/C Not Connected Reserved for alternative supply
2 N/C Not Connected Reserved for alternative supply
3 VCC5 +5V Power Supply Output from on-board regulator
4 VCC5 +5V Power Supply Output from on-board regulator
5 GND Digital Ground  
6 GND Digital Ground  
7 GND Digital Ground  
8 GND Digital Ground  
9 MR\ Hardware Reset Input Drive low to reset Ethernut.

Pressing the reset button pulls this line low.
Also driven low during SPI/JTAG programming.

10 DC Unregulated DC Power Supply Can drive external regulators or

as DC input for Ethernut.

11 VCC5 +5V Power Supply Output from on-board regulator
12 VCC5 +5V Power Supply Output from on-board regulator
13 RD\ External Memory Bus Read Strobe  
14 WR\ External Memory Bus Write Strobe  
15 D0 External Data Bus Bit 0  
16 D1 External Data Bus Bit 1  
17 D2 External Data Bus Bit 2  
18 D3 External Data Bus Bit 3  
19 D4 External Data Bus Bit 4  
20 D5 External Data Bus Bit 5  
21 D6 External Data Bus Bit 6  
22 D7 External Data Bus Bit 7  
23 A0 External Address Bus Bit 0

PA0 General Purpose I/O Port A Bit 0

 
24 A1 External Address Bus Bit 1

PA1 General Purpose I/O Port A Bit 1

 
25 A2 External Address Bus Bit 2

PA2 General Purpose I/O Port A Bit 2

 
26 A3 External Address Bus Bit 3

PA3 General Purpose I/O Port A Bit 3

 
27 A4 External Address Bus Bit 4

PA4 General Purpose I/O Port A Bit 4

 
28 A5 External Address Bus Bit 5

PA5 General Purpose I/O Port A Bit 5

 
29 A6 External Address Bus Bit 6

PA6 General Purpose I/O Port A Bit 6

 
30 A7 External Address Bus Bit 7

PA7 General Purpose I/O Port A Bit 7

 
31 A8 External Address Bus Bit 8

PC0 General Purpose I/O Port C Bit 0

 
32 A9 External Address Bus Bit 9

PC1 General Purpose I/O Port C Bit 1

 
33 A10 External Address Bus Bit 10

PC2 General Purpose I/O Port C Bit 2

 
34 A11 External Address Bus Bit 11

PC3 General Purpose I/O Port C Bit 3

 
35 A12 External Address Bus Bit 12

PC4 General Purpose I/O Port C Bit 4

 
36 A13 External Address Bus Bit 13

PC5 General Purpose I/O Port C Bit 5

 
37 A14 External Address Bus Bit 14

PC6 General Purpose I/O Port C Bit 6

 
38 A15 External Address Bus Bit 15

PC7 General Purpose I/O Port C Bit 7

 
39 PE0 General Purpose I/O Port E Bit 0

RXD0 UART 0 Receive Input
PDI Programming Data Input

UART0 receiver.

Connected to level converter output via R18.
Also used for SPI programming.

40 PE1 General Purpose I/O Port E Bit 1

TXD0 UART 0 Transmit Output
PDO Programming Data Output

UART0 transmitter.

Also used for SPI programming.

41 PE2 General Purpose I/O Port E Bit 2

XCK0 USART 0 External Clock
AIN0 Analog Comparator Positive Input

Available.
42 PE3 General Purpose I/O Port E Bit 3

OC3A Counter 3 Compare and PWM A
AIN1 Analog Comparator Positive Input

Available.
43 PE4 General Purpose I/O Port E Bit 4

INT4 External Interrupt 4
OC3B Counter 3 Compare and PWM B

Available.
44 PE5 General Purpose I/O Port E Bit 5

INT5 External Interrupt 5
OC3C Counter 3 Compare and PWM C

Internally used for Ethernet Controller Interrupt.

Available when removing R12 and mounting R31.

45 PE6 General Purpose I/O Port E Bit 6

INT6 External Interrupt 6
T3 Counter 3 Clock Input

Available by default.

Alternative Ethernet Interrupt when
removing R12 and mounting R31.

46 PE7 General Purpose I/O Port E Bit 7

INT7 External Interrupt 7
ICP3 Counter 3 Input Capture

Available.
47 PB0 General Purpose I/O Port B Bit 0

-SS SPI Slave Select Input

Available.
48 PB1 General Purpose I/O Port B Bit 1

SCK SPI Bus Serial Clock

Available, but used during SPI programming.

If used as Ethernut input, the external output
must be switched to tri-state during SPI
programming (MR\ low),

49 PB2 General Purpose I/O Port B Bit 2

MOSI SPI Bus Master Output / Slave Input

Available.
50 PB3 General Purpose I/O Port B Bit 3

MISO SPI Bus Master Input / Slave Output

Available.
51 PB4 General Purpose I/O Port B Bit 4

OC0 Counter 0 Compare and PWM

Available.
52 PB5 General Purpose I/O Port B Bit 5

OC1A Counter 1 Compare and PWM A

Available.
53 PB6 General Purpose I/O Port B Bit 6

OC1B Counter 1 Compare and PWM B

Available.
54 PB7 General Purpose I/O Port B Bit 7

OC1C Counter 1 Compare and PWM C
OC2 Counter 2 Compare and PWM

Available.
55 PD0 General Purpose I/O Port D Bit 0

INT0 External Interrupt 0
SCL TWI Serial Clock

Available.
56 PD1 General Purpose I/O Port D Bit 1

INT1 External Interrupt 1
SDA TWI Serial Data

Available.
57 PD2 General Purpose I/O Port D Bit 2

INT2 External Interrupt 2
RXD1 UART 1 Receive Input

Available by default.

Optional CTS input when R33 is mounted.

58 PD3 General Purpose I/O Port D Bit 3

INT3 External Interrupt 3
TXD1 UART 1 Transmit Output

Available by default.

Optional RTS output when R32 is mounted.

59 PD4 General Purpose I/O Port D Bit 4

ICP1 Counter 1 Input Capture

Available.
60 PD5 General Purpose I/O Port D Bit 5

XCK1 USART 1 External Clock

Available.
61 PD6 General Purpose I/O Port D Bit 6

T1 Counter 1 Clock Input

Available.
62 PD7 General Purpose I/O Port D Bit 7

T2 Counter 2 Clock Input

Available.
63 N/C Not Connected  
64 N/C if R34 not mounted

ALE External Address Bus Latch Enable

 



Analog Port

Pin Signal Description
1 AVCC +5V Power Supply Connected to digital power supply via R13
2 AREF Analog reference Connected to CPU AREF pin.
3 AVCC +5V Power Supply Connected to digital power supply via R13
4 AGND Analog ground Connected to digital ground via R15.
5 PF0 General Purpose I/O Port F Bit 0

ADC0 Analog/Digital Converter Channel 0

Available.
6 AGND Analog ground Connected to digital ground via R15.
7 PF1 General Purpose I/O Port F Bit 1

ADC1 Analog/Digital Converter Channel 1

Available.
8 AGND Analog ground Connected to digital ground via R15.
9 PF2 General Purpose I/O Port F Bit 2

ADC2 Analog/Digital Converter Channel 2

Available.
10 AGND Analog ground Connected to digital ground via R15.
11 PF3 General Purpose I/O Port F Bit 3

ADC3 Analog/Digital Converter Channel 3

Available.
12 AGND Analog ground Connected to digital ground via R15.
13 PF4 General Purpose I/O Port F Bit 4

ADC4 Analog/Digital Converter Channel 4
TCK JTAG

Available, but used during

JTAG programming/debugging.

14 AGND Analog ground Connected to digital ground via R15.
15 PF5 General Purpose I/O Port F Bit 5

ADC5 Analog/Digital Converter Channel 5
TMS JTAG

Available, but used during

JTAG programming/debugging.

16 AGND Analog ground Connected to digital ground via R15.
17 PF6 General Purpose I/O Port F Bit 6

ADC6 Analog/Digital Converter Channel 6
TDO JTAG

Available, but used during

JTAG programming/debugging.

18 AGND Analog ground Connected to digital ground via R15.
19 PF7 General Purpose I/O Port F Bit 7

ADC7 Analog/Digital Converter Channel 7
TDI JTAG

Available, but used during

JTAG programming/debugging.

20 AGND Analog ground Connected to digital ground via R15.