ST9040
EXTERNAL INTERRUPT TIMING TABLE (VDD = 5V ± 10%, TA = –40°C to +85°C, Cload = 50pF,
INTCLK = 12MHz, Push-pull output configuration, unless otherwise specified)
Value (Note)
N° Symbol
Parameter
OSCIN OSCIN Not
Unit
Divided By Divided By Min. Max.
2 Min.
2 Min.
1 TwLR Low Level Minimum Pulse Width in Rising Edge Mode 2TpC+12 TpC+12
95
ns
2 TwHR High Level Minimum Pulse Width in Rising Edge Mode 2TpC+12 TpC+12
95
ns
3 TwHF High Level Minimum Pulse Width in Falling Edge Mode 2TpC+12 TpC+12
95
ns
4 TwLF Low Level Minimum Pulse Width in Falling Edge Mode 2TpC+12 TpC+12
95
ns
Note: The value left hand two columns show the formula used to calculate the timing minimum or maximum from the oscillator clock period,
prescale value and number of wait cycles inserted.
The value right hand two columns show the timing minimum and maximum for an external clock at 24 MHz divided by 2, prescale value of zero
and zero wait status.
EXTERNAL INTERRUPT TIMING
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