Atmel ATSTK600 500 Starter Kit and Development System. ATSTK600 ATSTK600 Data Sheet

 

8133A-AVR-04/08 

The PARAM_SW_MAJOR and PARAM_SW_MINOR returns the firmware version of 
the master mcu. 

The parameter value is voltage in volts x10, i.e. a parameter value of 42 (decimal) 
corresponds to 4.2V. 

Note: This parameter cannot be set when the STK600 is in programming mode. 

The maximum target voltage level is dependant on what target routing/socket board is 
mounted. 

To find the maximum allowable target voltage the board-id must be read before 
setting a new voltage. 

The maximum voltage for the board is found in “targetboard.xml” 

This parameter returns the same status value as 
CMD_CHECK_TARGET_CONNECTION. 

See chapter 3.9 

The difference between using the command and the GET_PARAM is that bits 4-5 are 
only updated after the command has been run. 

This is a two-byte value, which sets the ISP frequency. 

When using the ISP programming interface, the ISP clock frequency must not exceed 
what the target device supports. (The maximum ISP clock frequency depends on the 
device system clock, internal clock division etc.) 

The STK600 supports ISP frequencies from 1953 Hz up to 8.0 MHz. The value for 
PARAM_SCK_DURATION can be found using the following algorithm: 

unsigned int CalcSckDur(int freq) 

{ 

 

sck_dur = ceil((16e6/(2*freq))-1); 

 

 

 

return __min(4096, sck_dur); 

// 4096 is an illegal value 

} 

 

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.