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Micro-ISP
ISP Header (Target System)
Micro-ISP - Target System Connection
Details
The programmer 10-way ribbon cable supplied is
terminated with a standard 10-way 0.1" pitch IDC plug.
This is designed to mate with the complimentary male
10-way IDC header on the target system. The pin-out of
the header is shown opposite:
ISP Pin Assignments
Pin
Programmer
Name
1
PROG_Vcc
2
PROG_SS
3
PROG_SCK2
4
PROG_MOSI
5
PROG_LED
6
PROG_MISO
7
PROG_GND
8
PROG_SCK1
9
PROG_GND
10
PROG_RESET
Y
= This connection must be made
N/C = No Connect
Connector recommendations
The IDC connector supplied with the Micro-ISP programmer is 'bump' polarised so that it can
not be inserted the wrong way around in a polarised socket. If the connector used on the
target system is not polarised, it is advised that measures are taken to prevent the connector
being plugged in the wrong way around. This could be achieved by removing pin 9
IV User Manual V2.03
Series
Note: This is the view of the connector fitted to the target (e.g. Evalu8r)
I/O
Pin Description
-
Programmer Power (+Vcc)
O
SPI - Slave Select
O
SPI - Serial Clock 2
O
SPI - Master Output
O
Program LED
I
SPI - Master Input
-
Programmer GND connection
O
SPI - Serial Clock 1
-
Programmer GND connection
O
Target RESET control pin
(a second ground) from the target header and placing a blanking
piece of plastic in pin 9 of the cable header.
board, as seen from above (the component side).
Micro-ISP
x
= Optional
MCU = AT90S/89S/89LS/ATtiny
19
10-Way IDC Header
Top Pin View
1
PROG_Vcc
3
PROG_SCK2
5
PROG_LED
7
PROG_GND
9
PROG_GND
ATmega
MCU
x
Vcc
x
x
x
N/C
PD1/RXD
MOSI
x
x
PD0/TXD
MISO
x
GND
x
SCK
x
GND
x
RST
2
PROG_SS
4
PROG_MOSI
6
PROG_MISO
8
PROG_SCK1
10
PROG_RESET
Connect
Y
x
x
Y
x
Y
Y
Y
Y
Y
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