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ISP Header - 6-way IDC - Atmel SPI pin-out

 
 
 

The 'Atmel 6-way ISP Header' is popular for Target Boards where the smallest possible header is required due to board space limitations. This Header supports SPI In-System Programming only and is therefore only compatible with Atmel AVR and AT89S devices.

It is highly recommended that a 'bump-polarised' ISP Header is user to avoid accidentally plugging the ISP Cable in the wrong way around.

 
 

Frequently Asked Questions (FAQ):

 
 
Advantages
Equinox Programmer compatability
Atmel Target Board Compatibility
ISP Header Connections

Advantages
  • Compact Header - uses the smallest circuit board area of all ISP Headers
  • Uses the minimum number of pins to implement In System Programming (ISP)

Equinox Programmer compatability
  • Epsilon5
  • FS2000A (requires external 'ISP Convertor Cable')
  • PPM3-MK1 (using I/O CON 1 or 2)
  • PPM3-MK2 (using I/O CON 1 or 2)
  • PRO101

Atmel Target Board Compatibility
  • Atmel STK500 AVR FLASH Microcontroller Starter Kit

ISP Header Connections

The table below details the pin-out connections of this header

 

Pin

No

Pin Name

Programmer Input/Output

Connect to Pin on Target Device

Description

1

PROG_MISO

 




I

MISO

(except for ATmega103/128/64 – connect to TXD pin instead)

Master In Slave Out

This is the SPI data input pin to the programmer. This pin should be connected to the MISO pin on the Target Microcontroller

2

PROG_VCC

P

TARGET_VCC

Target Vcc

This pin should be connected to the Target System Vcc. This voltage could be used to power the programmer depending on the settings of the power switch/jumper on the programmer.

3

PROG_SCK1

P

SCK

SPI Serial Clock Output

This is the SPI clock output signal.

4

PROG_MOSI

P

MOSI

(except for ATmega103/128/64 – connect to RXD pin instead)

Master Out Slave In

This is the SPI data output pin from the programmer. This pin should be connected to the MOSI pin on the Target Microcontroller

5

PROG_RESET

O

RESET

Target RESET control pin

This pin controls the Target Device RESET pin. It will be driven HIGH/LOW according to the device type and settings in the ‘Pre-program State Machine’ tab in the Eqtools project.

6

PROG_GND

P

GROUND

Ground Connection

Common ground connection between the programmer and Target System.

 

Key

O - Output from programmer to Target Device

I - Input to programmer from Target Device

P - Passive eg. GROUND and power rails

N/C - Not connected

 

For further information about related products, please see the Related ISP Headers.





 
 
Related ISP Headers
ISP Header OVERVIEW >>
 
 
Associated Products View All
Cables
Spare 6-way In-System Programming (ISP) Cable for Equinox Programmers (280mm) >>

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