Atmel AT85DVK-07 Especificaciones descargar pdf (Pagina 254)

17

AT85C51SND3Bx

7632A–MP3–03/06

Timings Table 275. External Clock AC Timings

V

DD

= 1.65 to 3.6 V; T

A

= -40 to +85°C

Waveforms Figure 150. External Clock Waveform

Symbol Parameter Min Max Unit

T

CLCL

Clock Period 38 ns

T

CHCX

High Time 10 ns

T

CLCX

Low Time 10 ns

T

CLCH

Rise Time 3 ns

T

CHCL

Fall Time 3 ns

T

CR

Cyclic Ratio in X2 mode 40 60 %

T

CLCL

V

IH1

V

IL

T

CHCX

T

CLCH

T

CHCL

T

CLCX

1 2 ... 249 250 251 252 253 254 255 256 257 258 259 ... 262 263

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