Rainbow-electronics AT90LS4433 Manual do Utilizador descarregar pdf (Página 100)

100

AT90S/LS4433

1042G–AVR–09/02

External Clock Drive

Waveforms

Figure 69. External Clock

Table 39. External Clock Drive

Symbol Parameter

=2.7Vto6.0V V

=4.0Vto6.0V

UnitsMinMaxMinMax

1/t

CLCL

Oscillator Frequency 0.0 4.0 0.0 8.0 MHz

CLCL

Clock Period 250.0 125.0 ns

CHCX

High Time 100.0 50.0 ns

CLCX

Low Time 100.0 50.0 ns

CLCH

Rise Time 1.6 0.5 µs

CHCL

Fall Time 1.6 0.5 µs

VIL1

VIH1

1 2 ... 95 96 97 98 99 100 101 102 103 104 105 ... 124 125

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Rainbow-electronics AT90LS4433 Manual do Utilizador Página 100