M37702E6BFS Renesas Electronics America, M37702E6BFS Datasheet - Page 84

• 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

INTERRUPTS
4.10 External interrupts (INT
4.10 External interrupts (INT
An external interrupt request occurs by input signals to the INT
interrupt request can be selected by the level sense/edge sense select bit and the polarity select bit (bits
5 and 4 at addresses 7D
interrupt request.
When using P6
address 10
The signals input to the INT
Additionally, even when using the pins P6
can obtain the pin’s state by reading bits 2 to 4 at address E
Note: When selecting an input signal’s falling or “L” level as the occurrence factor of an interrupt request,
The INT
not use the INT
4–20
Table 4.10.1 Occurrence factor of INT
b5
0
0
1
1
___
make sure that the input signal is held “L” for 250 ns or more. When selecting an input signal’s rising
or “H” level as that, make sure that the input signal is held “H” for 250 ns or more.
i
interrupt request occurs by always detecting the INT
16
b4
___
0
1
0
1
(port P6 direction register) to “0.” (Refer to Figure 4.10.2.)
2
i
/INT
interrupt, set the INT
___
Interrupt request occurs at falling of the signal input to the INT
Interrupt request occurs at rising of the signal input to the INT
Interrupt request occurs while the INT
Interrupt request occurs while the INT
0
to P6
___
16
to 7F
4
i
/INT
pin require “H” or “L” level width of 250 ns or more independent of the f(X
___
___
16
2
) shown in Figure 4.10.1. Table 4.10.1 lists the occurrence factor of INT
pins as input pins of external interrupts, set the corresponding bits at
___
i
___
interrupt)
___
i
interrupt’s priority level to level 0.
7702/7703 Group User’s Manual
i
2
interrupt request
INT
i
/INT
___
___
interrupt)
i
0
interrupt request occurrence factor
to P6
4
___
___
/INT
___
i
i
___
2
pin level is “H” (level sense).
pin level is “L” (level sense).
as the input pins of external interrupt, the user
___
i
pin’s state. Accordingly, when the user does
16
i
(port P6 register).
(i = 0 to 2) pin. The occurrence factor of
___
___
i
i
pin (edge sense).
pin (edge sense).
___
IN
).
i