ST7LITE49K2 datasheet(198/245 Pages) STMICROELECTRONICS

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Electrical characteristics

ST7LITE49K2

198/245

Internal RC oscillator calibrated at 3.3 V

The ST7 internal clock can be supplied by an internal RC oscillator (selectable by option

byte).

Figure 86.

Frequency vs voltage at four different ambient temperatures (RC at 5 V)

Table 77.

Internal RC oscillator characteristics (3.3 V calibration)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

fRC

Internal RC oscillator

frequency

RCCR = FF (reset value),

TA=25 °C,VDD=3.3 V

4.3

MHz

RCCR = RCCR1(1),

TA = 25 °C, VDD = 3.3 V

7.84

8.16

ACCRC

Accuracy of Internal

RC oscillator with

RCCR=RCCR11)

TA= 25 °C, VDD = 3.3 V

(2)

TA= 25 °C, VDD = 3.0 to 3.6 V

(3)

-2

TA= 0 to +85 °C, VDD = 3.0 to 3.6 V

(3)

-2.5

TA = 0 to +125 °C, VDD = 3.0 to 3.6 V

(3)

-3

TA = -40 to 0 °C, VDD = 3.0 to 3.6 V

(4)

-4

2.5

tsu(RC)

RC oscillator setup

time

TA = 25 °C, VDD = 3.3 V

4 (3)

μs

See Section 7.1.1: Internal RC oscillator

Tested in production at 3.3 V only

Garranted by characterization - Not tested in production.

7.800

7.840

7.880

7.920

7.960

8.000

8.040

8.080

8.120

8.160

8.200

VDD (V)

RC 5V@- 40 °C

RC 5V@25 °C

RC 5V@85 °C

RC 5V@12 5 °C

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