upd70f3402 Renesas Electronics Corporation., upd70f3402 Datasheet - Page 712

• Manufacturer Part Number: upd70f3402
• Description: 32-/16-bit Single-chip Microcontroller With Can Interface
• Manufacturer: Renesas Electronics Corporation.

(7)
Remark:
Caution:
(8)
Remark:
Caution:
Caution:
Remark:
712
Figure 17-21: External Interrupt Falling Edge Specification Register 9H (INTF9H) Format
Figure 17-22: External Interrupt Rising Edge Specification Register 9H (INTR9H) Format
External interrupt falling edge specification register 9H (INTF9H)
This is an 8-bit register that specifies detection of the falling edge of the external interrupt pins.
This register can be read or written in 8-bit or 1-bit units.
External interrupt rising edge specification register 9H (INTR9H)
This is an 8-bit register that specifies detection of the rising edge of the external interrupt pins.
This register can be read or written in 8-bit or 1-bit units.
INTR9H INTR915 INTR914 INTR913
INTF9Hn
INTF9H INTF915 INTF914
For how to specify a valid edge, refer to Table 17-7.
When the function is changed from the external interrupt function (alternate function)
to the port function, an edge may be detected. Therefore, clear INTF6n and INTR6n to
0, and then set the port mode.
For how to specify a valid edge, refer to Table 17-7.
When the function is changed from the external interrupt function (alternate function)
to the port function, an edge may be detected. Therefore, clear INTF6n and INTR6n to
0, and then set the port mode.
Be sure to set INTF9H and INTR9H to 00 when these terminals are not used as exter-
nal interrupt function.
n = 13: Control of INTP4
n = 14: Control of INTP5
n = 15: Control of INTP6
0
0
1
1
After reset: 00H
After reset: 00H
7
7
Chapter 17 Interrupt/Exception Processing Function
INTR9Hn
0
1
0
1
Table 17-7: Valid Edge Specification
6
6
No edge detected
Rising edge
Falling edge
Both edges
User’s Manual U16702EE3V2UD00
INTF93
R/W
R/W
5
5
Valid Edge Specification (n = 13 to 15)
4
0
4
0
3
0
3
0
Address: FFFFFC13H
Address: FFFFFC33H
2
0
2
0
1
0
1
0
0
0
0
0