ST92250DR1TC View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
ST92250DR1TC
STMicroelectronics
ST92250DR1TC Datasheet PDF : 429 Pages
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ST92F124/F150/F250 - ELECTRICAL CHARACTERISTICS
STANDARD TIMER TIMING TABLE
(VDD = 5V ± 10%, TA = –40°C to +125°C, CLoad = 50pF, fINTCLK = 24MHz, Push-pull output configuration,
unless otherwise specified)
N° Symbol
Parameter
1 TwSTOL STOUT Low Pulse Width
2 TwSTOH STOUT High Pulse Width
3 TwSTIL
4 TwSTIH
STIN High Pulse Width
STIN Low Pulse Width
Value
Formula
Unit
Min
Max
167
ns
4 x (Psc+1) x (Cnt+1) x Tck
2.8
s
(Psc+1) x (Cnt+1) x TSTIN
(1)
(1)
ns
167
ns
4 x (Psc+1) x (Cnt+1) x Tck
2.8
s
(Psc+1) x (Cnt+1) x TSTIN
(1)
(1)
ns
≥ 4 x Tck
(1)
(1)
ns
≥ 4 x Tck
(1)
(1)
ns
Note: The value in the left hand column shows the formula used to calculate the timing minimum or maximum from the oscillator clock period,
standard timer prescaler and counter programmed values.
The value in the right hand two columns show the timing minimum and maximum for an internal clock (INTCLK) at 24MHz, with minimum and
maximum prescaler value and minimum and maximum counter value.
Measurement points are VOH or VIH for positive pulses and VOL or VIL for negative pulses.
(1) On this product STIN is not available as Alternate Function but it is internally connected to a precise clock source directly derived from the
crystal oscillator. Refer to RCCU chapter for details about clock distribution.
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.
Psc = Standard Timer Prescaler Register content (STP): from 0 to 255
Cnt = Standard Timer Counter Registers content (STH,STL): from 0 to 65535
TSTIN = Standard Timer Input signal period (STIN) , TSTIN ≥ 8 x Tck
STANDARD TIMER TIMING
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