Operation - Fujitsu MB91460 SERIES FR60 User Manual

5. Operation

Level detection
"H")
INT (
"L")
(
Valid edge
Interrupt request (ER)
Edge detection
Internal clock
(CLKP divided by two)
INT (rising)
(fallling)
Valid edge
Interrupt requests (ER)
(1) External interrupt signal (INT) input
(2) Detect interrupt signals (level/edge).
(3) Valid edge signal (3xCLKP above required)
(4) An interrupt request generated.
(5) The interrupt request is cleared with software.
Remark: When waking up from STOP mode with edge detection enabled a minimum pulse pulse width (>
50ns) of the INT signal trigger must be fulfilled.
(2)
(1)
(1)
(2)
(3)
(4)
(2)
(1)
(1)
(2)
Required to maintain the level more than
before and after the edge (3 x CLKP)
(3)
(4)
Chapter 25 External Interrupt
Clear by software
(5)
Clear by software
(5)
5.Operation
327