J3 - Atmel 6-Way Isp Header (Spi Interface) - Equinox Systems EPSILON5 MKII User Manual

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Datasheet of EPSILON5-A1 - ISP PORTABLE PROGRAMMER USB
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4.4 J3 - Atmel 6-way ISP Header (SPI Interface)

This connection method is suitable for interfacing the EPSILON5 programmer to a Target System
which features the following:
•
Atmel 6-way IDC ISP Header
•
An Atmel device which features the 3-wire SPI + RESET Programming Interface
The 6-way IDC box header is the most compact header i.e. takes up least space on the Target
System and so is very popular for designs where PCB space is limited. Unfortunately, this connection
method does not have any pins spare for extra functionality such as the SCK2 Oscillator so it should
only be used if this functionality is not required.
To implement this connection method, simply plug a 6-way ISP cable (not supplied) into the
EPSILON5 ISP Header J3 and plug the other end of the cable into the matching header on the
Target System.
Pin Programmer Programmer
No Pin name Input /
Output
1 PROG_MISO I
2 PROG_VCC P
3 PROG_SCK1 O
4 PROG_MOSI O
EPSILON5 MKII Programmer - User Guide V1.12 – 1
Figure 4.4.1 - Atmel 6-way IDC Header (J3) viewed from above
Warning!
Connecting to the wrong ISP Header may cause catastrophic
damage to the Programmer & Target System
Connect to Description
pin on
Target Device
MISO Master In Slave Out
This is the SPI data input pin to the
(except for
programmer. This pin should be
ATmega103/128/64 connected to the MISO pin on the Target
– connect to TXD Microcontroller.
pin instead)
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.
SCK SPI Serial Clock Output
This is the SPI clock output signal.
MOSI Master Out Slave In
This is the SPI data output pin from the
(except for programmer. This pin should be
ATmega103/128/64 connected to the MOSI pin on the Target
– connect to RXD Microcontroller.
pin instead)
st
August 2007
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