ST7L09 datasheet(75/104 Pages) STMICROELECTRONICS

75 / 104 page

ST7L05, ST7L09

75/104

13.3 OPERATING CONDITIONS

13.3.1 General Operating Conditions

TA = -40 to +105°C, unless otherwise specified.

Figure 42. fCLKIN Maximum Operating Frequency Versus VDD Supply Voltage

Note: For further information on clock manage-

ment and fCLKIN description, refer to Figure 12 in

Section 7 on page 23.

13.3.2 Internal RC Oscillator and PLL

The ST7 internal clock can be supplied by an internal RC oscillator and PLL (selectable by option byte).

Symbol

Parameter

Conditions

Min

Max

Unit

VDD

Supply voltage

fOSC = 16 MHz max

TA = -40°C to TA max

3.0

5.5

fCLKIN

External clock frequency on

CLKIN pin

VDD ≥ 3V

MHz

Ambient temperature range

A Suffix version

-40

+85

°C

B Suffix version

+105

fCLKIN [MHz]

SUPPLY VOLTAGE [V]

2.0

3.3

3.5

4.0

4.5

5.0

FUNCTIONALITY

NOT GUARANTEED

IN THIS AREA

5.5

FUNCTIONALITY

GUARANTEED

IN THIS AREA

(UNLESS OTHERWISE

STATED IN THE

TABLES OF

PARAMETRIC DATA).

3.0

Section 13.3.2 on page

75 FOR PLL OPERAT-

ING RANGE

REFER TO

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VDD(RC)

Internal RC oscillator operating voltage

3.0

5.5

VDD(x8PLL) x8 PLL operating voltage

3.6

tSTARTUP

PLL startup time

PLL input clock (fPLL) cycles

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