AVR ISP

From HwB

Todo: This page needs some editing.

ICSP=In Circuit Serial Programming
ISP=In System Programming

Atmel AVR 8-bit microprocessors.

Contents

Pinout (10 pin)

2   10
.....
..... (at the device/CPU)
1   9

File:Idc10m.png

10 PIN IDC MALE at the device/CPU.

File:Idc10f.png

10 PIN IDC FEMALE at the cable/programmer.

Pin Name Dir Description
1 MOSI Arrowl.png Master Out Slave In
2 +5V Arrow.png target supply voltage
3 LED or n/c Arrowl.png programming in progress
4 GND Arrow.png Signal ground
5 RESET Arrowl.png target Reset
6 GND Arrow.png Signal ground
7 SCK Arrowl.png Serial Clock
8 GND Arrow.png Signal ground
9 MISO Arrowr.png Master In Slave Out
10 GND Arrow.png Signal ground

Note: Direction is target (CPU) relative programmer (PC)

Pinout (6 pin)

2 6
...
... (at the device/CPU)
1 5

File:Idc6m.png

6 PIN IDC MALE at the CPU.

File:Idc6f.png

6 PIN IDC FEMALE at the cable/programmer.

Pin Name Dir Description
1 MISO Arrowr.png Master In Slave Out
2 +5V Arrow.png target supply voltage
3 SCK Arrowl.png Serial Clock
4 MOSI Arrowl.png Master Out Slave In
5 RESET Arrowl.png target Reset
6 GND Arrow.png Signal ground

Note: Direction is target (CPU) relative programmer (PC)

Technical

RESET

Used to reset the target system under the PC's control.

SCK

The serial data clock

MOSI

Master Out Slave In, used to send data from the PC (master) to the AVR (slave). Data is transmitted on the edges of SCK.

MISO

Master In Slave Out, used to send data from the AVR (master) to the PC (slave). Data is transmitted on the edges of SCK.

LED

The PC makes this line high to indicate that programming is occuring. Not used in all systems.

+5V

Can be used either to provide power to the target system during programming, or for the programmer to draw power from the target system during programming. I use it to allow the programmer to draw power from the system.

Contributions

Sources

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