EPSILON5 MKIV - USB Programmer - User Guide V1.05 19/09/12
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4.5 J6(a) - Equinox 10-way Header (Generic SPI Interface)
This connection method is suitable for interfacing the programmer to a Target System which features
the following:
•
Equinox 10-way IDC ISP Header
•
An Atmel device which features the 3-wire SPI + RESET Programming Interface
This is the favoured ISP connector as it allows the following additional functions:
•
Application of +12V Vpp for ATtiny High Voltage Serial Programming
•
SCK2 Oscillator for clocking devices during programming
•
Spare I/O pin which could be used for SPI SLAVE SELECT or to drive an LED on the Target
System
To implement this connection, simply plug the 10-way ISP cable into the
Programmer J6 header
and
plug the other end of the cable into the matching header on the Target System.
Figure 4.5.1 – Equinox 10-way IDC Header (J8) viewed from above
Warning!
1. It is possible for +12V to be output on pin 10 of this
connector when programming ATtiny11/12/15 devices.
2. Connecting to the wrong ISP Header may cause
catastrophic damage to the Programmer & Target
System
Pin
No
Programmer
Pin name
Programmer
Input /
Output
Connect to
pin on
Target Device
Description
1
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.
2
PROG_SPARE -
No connect
Spare Programmer I/O pin
This pin is currently a I/O spare pin
which is not used during SPI
programming. In order to use this pin,
the pin state must be setup in the
EQTools <Pre-programming State
Machine> tab.
