Atmel ATSTK600 500 Starter Kit and Development System. ATSTK600 ATSTK600 Fiche De Données

 

8133A-AVR-04/08 

This parameter is intended to be used as a way of telling if the power on STK600 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. 

If the returned value is 0 the CMD_SET_CONTROL_STACK must be executed 
before continuing with any high voltage programming commands. 

This parameter sets a time period for which the reset line has a higher resistance for 
each time it is toggled. 

The purpose is to reduce the maximum current caused by the discharge/recharge of 
a decoupling capacitor connected to the reset pin. 

When the reset is toggled a resistor of 510ohm will be switched in, which reduces the 
peak current to an acceptable level for the internal components of the STK600. 

The delay should be set to: t>510ohm*C 

If no capacitor is connected this parameter could be set to 0. 

The parameter value is voltage in volts x100, i.e. a parameter value of 449 (decimal) 
corresponds to 4.49V.  

The maximum value is 5.5V, or parameter value 550. 

Same as for AREF0. 

This is a two-byte value, which configures the chip oscillator. 

Table 11-3. Two-byte value. 

OCT3 OCT2 OCT1 OCT0 DAC9 DAC8 DAC7 DAC6 

 

Table 11-4. Two-byte value. 

DAC5 DAC4 DAC3 DAC2 DAC1 DAC0 X 

X 

 

The frequency is given by the formula: 

Equation 11-1. Frequency 

1024

2

2078

2

−

⋅

=