|
Pin
No |
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 |
N/C |
- |
N/C |
Not connected |
|
3 |
PROG_PSEN |
O |
PSEN |
PSEN pin
This pin is driven LOW by the programmer to enter ‘Boot Loader’ programming mode |
|
4 |
PROG_TXD |
O |
RXD |
Programmer RXD (Transmit) pin
The programmer transmits serial data on this pin to the Target Device RXD (Receive) pin |
|
5 |
N/C |
- |
N/C |
Not connected |
|
6 |
PROG_RXD |
I |
TXD |
Programmer RXD (Transmit) pin
The programmer receives serial data on this pin from the Target Device TXD (Transmit) pin |
|
7 |
PROG_GND |
P |
GROUND |
Target / Programmer Ground Connection
Common ground connection between the programmer and Target System |
|
8 |
PROG_ACTIVE |
O |
LED or Interrupt pin |
Programmer ACTIVE LED
This pin can be driven LOW when a programming action is taking place. The signal can be used to illuminate an LED or trigger an interrupt on the Target Microcontroller |
|
9 |
PROG_GND |
P |
GROUND |
Target / Programmer Ground Connection
Common ground connection between the programmer and Target System |
|
10 |
PROG_RESET |
O |
RESET |
Target RESET control pin
This pin controls the Target Device RESET pin. It will driven HIGH/LOW according to the device type and settings in the ‘Pre-program State Machine’ tab in the Eqtools project
WARNING!
During ‘High Voltage Serial Programming’ of the Atmel ATtiny11/12/15 microcontrollers, a +12V Vpp voltage is generated by the programmer on this pin |
