Electrical characteristics

ST72682

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7.5

Clock and timing characteristics

7.5.1

Crystal oscillator

The Device internal clock is supplied from a crystal oscillator. All the information given in this

paragraph are based on characterization results with specified typical external components.

In the application the load capacitors have to be placed as close as possible to the oscillator

pins in order to minimize output distortion and start-up stabilization time. Refer to the crystal

manufacturer for more details (frequency, package, accuracy...).

Figure 7.

Typical application with a crystal

1.

manufacturer for more details.

Table 14.

Clock characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Oscillator frequency

12

MHz

Total crystal oscillator

accuracy

Absolute value +

temperature + aging

±60

ppm

α

OSC

1.

manufacturer for more details.

45

50

55

%

Table 15.

Supplier

Typical Crystal

(

Ω)

NDK

AT51 or AT41

16

560

OSCOUT

OSCIN

Device

CRYSTAL

(1)