ST7LITE49K2 datasheet(208/245 Pages) STMICROELECTRONICS

208 / 245 page

Electrical characteristics

ST7LITE49K2

208/245

Figure 98.

Typical application with an external clock source

13.6.1

Auto-wakeup from Halt oscillator (AWU)

Table 84.

External clock source characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VOSC1H or

VCLKIN_H

OSC1/CLKIN input pin high

level voltage

see Figure 98

0.7xVDD

VDD

VOSC1L or

VCLKIN_L

OSC1/CLKIN input pin low

level voltage

VSS

0.3xVDD

tw(OSC1H) or

tw(CLKINH)

tw(OSC1L) or

tw(CLKINL)

OSC1/CLKIN high or low

time(1)

Data based on design simulation and/or technology characteristics, not tested in production.

tr(OSC1) or tr(CLKIN)

tf(OSC1) or tf(CLKIN)

OSC1/CLKIN rise or fall time(1)

OSCx/CLKIN Input leakage

current

VSS≤VIN≤VDD

±1

μA

OSC1/CLKIN

OSC2

fOSC

EXTERNAL

ST7xxx

CLOCK SOURCE

Not connected internally

VOSC1L or VCLKINL

VOSC1H or VCLKINH

tr(OSC1 or CLKIN))

tf(OSC1 or CLKIN)

tw(OSC1H or CLKINH))

tw(OSC1L or CLKINL)

90%

10%

Table 85.

AWU from Halt characteristics

Symbol

Parameter(1)

Guaranteed by Design. Not tested in production.

Conditions

Min

Typ

Max

Unit

fAWU

AWU oscillator frequency

kHz

tRCSRT

AWU oscillator startup

time

µs

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