EQ-IOCON-3 Equinox Technologies, EQ-IOCON-3 Datasheet - Page 15

• Manufacturer Part Number: EQ-IOCON-3
• Description: MOD PPM3 CONN-3 I/O ATMEGA JTAG
• Manufacturer: Equinox Technologies

Specifications of EQ-IOCON-3

• Accessory Type: I/O Connector Module
• For Use With/related Products: PPM3-MK2
• Other names: 483-1005; EQ-IOCON-3

3.4 Atmel 6-way ISP Header (SPI Interface)
This connection method is suitable for interfacing the programmer to a Target System which features
the following:
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 6-way
ISP header and plug the other end of the cable into the matching header on the Target System.
Pin
No
1
2
3
4
12
•
•
Programmer
Pin name
PROG_MISO
PROG_VCC
PROG_SCK1
PROG_MOSI
Atmel 6-way IDC ISP Header
An Atmel device which features the 3-wire SPI + RESET Programming Interface
I/O Connector Modules (IO-CON) for the PPM3 Programming Module – V1.04 – 1
Programmer
Input /
Output
I
P
O
O
SCK
Connect to
pin on
Target Device
MISO
(except for
ATmega103/128/64
– connect to TXD
pin instead)
TARGET_VCC
MOSI
(except for
ATmega103/128/64
– connect to RXD
pin instead)
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
Description
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.
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.
SPI Serial Clock Output
This is the SPI clock output signal.
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.
st
April 2008