Siemens EF 88H Series Manual do Utilizador descarregar pdf (Página 131)

Device Specification

Semiconductor Group 7-69

AC Characteristics (cont’d)

External Clock Cycle

Parameter Symbol Limit values Unit

Variable clock

Frequ. = 3.5 MHz to 18 MHz

min. max.

External Clock Drive

Oscillator period t

CLCL

55.6 285 ns

High time t

CHCX

20 t

CLCL-

CHCX

Low time t

CLCX

20 t

CLCL-

CHCX

Rise time t

CLCH

–

20 ns

Fall time t

CHCL

–

20 ns

Oscillator frequency 1/t

CLC

3.5 18 MHz

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Siemens EF 88H Series Manual do Utilizador Página 131