ST92F124 datasheet(384/429 Pages) STMICROELECTRONICS

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ST92F124/F150/F250 - ELECTRICAL CHARACTERISTICS

EXTERNAL INTERRUPT TIMING TABLE

(VDD = 5V ± 10%, TA = –40°C to +125°C, CLoad = 50pF, fINTCLK = 24MHz, 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 shows the timing minimum and maximum for an internal clock at 24MHz (INTCLK).

Measurement points are VIH for positive pulses and VIL for negative pulses.

Legend:

Tck = INTCLK period = Crystal Oscillator Clock period when CLOCK1 is not divided by 2;

2 x Crystal Oscillator Clock period when CLOCK1 7is divided by 2;

Crystal Oscillator Clock period x PLL factor when the PLL is enabled.

EXTERNAL INTERRUPT TIMING

WAKE-UP MANAGEMENT TIMING TABLE

(VDD = 5V ± 10%, TA = –40°C to +125°C, CLoad = 50pF, fINTCLK = 24MHz, 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 24MHz (INTCLK).

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

Measurement points are VIH for positive pulses and VIL for negative pulses.

Legend:

Tck = INTCLK period = Crystal Oscillator Clock period when CLOCK1 is not divided by 2;

2 x Crystal Oscillator Clock period when CLOCK1 is divided by 2;

Crystal Oscillator Clock period x PLL factor when the PLL is enabled.

WAKE-UP MANAGEMENT TIMING

N°

Symbol

Parameter

Value

Unit

Formula

Min

TwINTLR

Low Level Minimum Pulse Width in Rising Edge Mode

≥Tck+10

TwINTHR

High Level Minimum Pulse Width in Rising Edge Mode

≥Tck+10

TwINTHF

High Level Minimum Pulse Width in Falling Edge Mode

≥Tck+10

TwINTLF

Low Level Minimum Pulse Width in Falling Edge Mode

≥Tck+10

N°

Symbol

Parameter

Value

Unit

Formula

Min

TwWKPLR

Low Level Minimum Pulse Width in Rising Edge Mode

≥Tck+10

TwWKPHR

High Level Minimum Pulse Width in Rising Edge Mode

≥Tck+10

TwWKPHF

High Level Minimum Pulse Width in Falling Edge Mode

≥Tck+10

TwWKPLF

Low Level Minimum Pulse Width in Falling Edge Mode

≥Tck+10

Rising Edge Detection

Falling Edge Detection

INTn

n = 0-7

n = 0

-15

Rising Edge Detection

Falling Edge Detection

WKUPn

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