Atmel ATSTK500 500 Starter kit and development system. ATSTK500 ATSTK500 Hoja De Datos

 

2591C-AVR-06/06 

This parameter only applies to STK500, not the AVRISP. 

Expansion cards can be connected to STK500. Each type of card has an id circuitry, 
so that the STK500 can detect which type of card that is mounted. 

The following IDs are in use: 

Table 5-75. Topcard IDs 

STK501 0xAA 

STK502 0x55 

STK503 0xFA 

STK504 0xEE 

STK505 0xE4 

STK520 0xDD 

 

This parameter only applies to STK500, not the AVRISP. 

This parameter returns the value on the PROG DATA connector used for High-Volt 
Parallel Programming. 

The STK500 and AVRISP can program both AT90 (AVR) family and AT89 (8051) 
family of microcontrollers. They have different RESET pin polarity. The AVR has 
active low reset, while the AT89 has active high. 

This parameter sets the polarity of the reset signal. Set the parameter to 1 when 
programming AVRs, and 0 when programming AT89 controllers. 

Note: 

STK500 and AVRISP store this parameter in EEPROM, so they are available the 
next time power is applied to the programmers. For STK500, also the RESET button 
change polarity according to this parameter. 

This parameter is internally set to 0 when the programmer MCU resets. The host 
software can write any value it wants to this parameter, and it can be read back later. 
This parameter is intended to be used as a way of telling if the power on 
STK500/AVRISP has been lost or turned off and then back again. 

This way, the host software can tell if the programmer needs to be initialized again 
before continuing with its operation.