M37702E6BFS Renesas Electronics America, M37702E6BFS Datasheet - Page 495

• Manufacturer Part Number: M37702E6BFS
• Description: EPROM MCU/8BIT CMOS EMULATION CH
• Manufacturer: Renesas Electronics America

Specifications of M37702E6BFS

• Accessory Type: Emulator EPROM MCU
• For Use With/related Products: 7702
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

A
Q
(1) In both the edge sense and level sense, external interrupt requests occur when the input
(2) There are two methods: one uses external interrupt’s level sense, and the other uses the
(1)
(2)
Using timer’s event counter mode
In hardware, input interrupt signals to the TAi
In software, set the timer’s operating mode to the event counter mode and a value “0000
into the timer register to the effective edge.
The timer’s interrupt request occurs when an interrupt signal (selected effective edge) is input.
signal to the INT
timer’s event counter mode.
Using external interrupt’s level sense
In hardware, input a logical sum of multiple interrupt signals (e.g., ‘a’, ‘b’, and ‘c’) to the INT
pin, and input each signal to each corresponding port.
In software, check the ports’ input levels in the INT
of the signals ‘a’, ‘b’, and ‘c’ is input.
Which timing of clock
How can four or more external interrupt input pins (INT
In the edge sense, the interrupt request bit is set to “1” at this time.
____
i
pin changes its level regardless of clock
a
b
c
1
is the external interrupts (input signals to the INT
7702/7703 Group User’s Manual
IN
Port
Port
Port
pins or TBi
INT
___
M37702
i
i
interrupt routine to determine that which
____
i
) be used?
IN
pins.
1
.
Appendix 6. Q & A
____
APPENDIX
i
pin) detected?
Interrupt
____
21–49
16
”
i