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MC68HC705J1ACPE Datasheet, PDF (107/162 Pages) Freescale Semiconductor, Inc – Freescale Semiconductor, Inc.
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Freescale Semiconductor, Inc.
External Interrupt Module (IRQ)
External Interrupt Timing
8.5 External Interrupt Timing
IRQ PIN
tILIL
tILIH
IR.Q1
tILIH
.
.
IRQn
IRQ (INTERNAL)
Figure 8-4. External Interrupt Timing
8.5.1 5.0-Volt External Interrupt Timing Characteristics
Characteristic(1)
Symbol Min
Max
IRQ interrupt pulse width low (edge-triggered)
tILIH
1.5
—
IRQ interrupt pulse width (edge- and level-triggered)
PA0–PA3 interrupt pulse width high (edge-triggered)
PA0–PA3 interrupt pulse width high (edge- and level-triggered)
tILIH
1.5
Note(3)
tILIL
1.5
—
tILIH
1.5
Note(3)
1. VDD = 5.0 Vdc ± 10%, VSS = 0 Vdc, TA = –40°C to +105°C, unless otherwise noted
2. tcyc = 1/fop; fop = fosc/2.
3. The minimum, tILIL, should not be less than the number of interrupt service routine cycles plus 19 tcyc.
Unit
tcyc(2)
tcyc
tcyc
tcyc
8.5.2 3.3-Volt External Interrupt Timing Characteristics
Characteristic(1)
Symbol Min
Max
IRQ interrupt pulse width low (edge-triggered)
tILIH
1.5
—
IRQ interrupt pulse width (edge- and level-triggered)
PA0–PA3 interrupt pulse width high (edge-triggered)
PA0–PA3 interrupt pulse width high (edge- and level-triggered)
tILIH
1.5
Note(3)
tILIL
1.5
—
tILIH
1.5
Note(3)
1. VDD = 3.3 Vdc ± 10%, VSS = 0 Vdc, TA = –40°C to +105°C, unless otherwise noted
2. tcyc = 1/fop; fop = fosc/2.
3. The minimum, tILIL, should not be less than the number of interrupt service routine cycles plus 19 tcyc.
Unit
tcyc(2)
tcyc
tcyc
tcyc
MC68HC705J1A — Rev. 4.0
External Interrupt Module (IRQ)
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