ST92141 datasheet(161/179 Pages) STMICROELECTRONICS

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ST92141 - ELECTRICAL CHARACTERISTICS

WAKE-UP MANAGEMENT TIMING TABLE

(VDD = 5V ± 10%, TA = –40°C to +85°C, CLoad = 50pF, fINTCLK = 25MHz, unless otherwise specified)

Note: The value in the left hand column shows the formula used to calculate the timing minimum or maximum from the oscillator clock period.

The value in the right hand two columns show the timing minimum and maximum for an internal clock at 25MHz (INTCLK).

The given data are related to Wake-up Management Unit used in External Interrupt mode.

Measurement points are taken with reference to VIH-VIH for positive pulse and VIL-VIL for negative pulse

(1) Formula guaranteed by design.

Legend:

Tck = INTCLK period = OSCIN period when OSCIN is not divided by 2;

2 x OSCIN period when OSCIN is divided by 2;

OSCIN period x PLL factor when the PLL is enabled.

WAKE-UP MANAGEMENT TIMING

N°

Symbol

Parameter

Value (Note)

Unit

Formula(1)

Min

Max

TwWKPLR

Low Level Pulse Width in Rising Edge Mode

≥ Tck+10

TwWKPHR

High Level Pulse Width in Rising Edge Mode

≥ Tck+10

TwWKPHF

High Level Pulse Width in Falling Edge Mode

≥ Tck+10

TwWKPLF

Low Level Pulse Width in Falling Edge Mode

≥ Tck+10

WKUPn

n=0-3

ST92141 Datasheet(PDF) 161 Page - STMicroelectronics