h8s-2635 Renesas Electronics Corporation., h8s-2635 Datasheet - Page 168

• Manufacturer Part Number: h8s-2635
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 5 Interrupt Controller
5.2
Note: The H8S/2635 Group is not equipped with a DTC, a PC brake controller, or an HCAN1.
5.2.1
SYSCR is an 8-bit readable/writable register that selects the interrupt control mode, and the
detected edge for NMI.
Only bits 5 to 3 are described here; for details of the other bits, see section 3.2.2, System Control
Register (SYSCR).
SYSCR is initialized to H'01 by a reset and in hardware standby mode. SYSCR is not initialized in
software standby mode.
Bits 5 and 4—Interrupt Control Mode 1 and 0 (INTM1, INTM0): These bits select one of two
interrupt control modes for the interrupt controller.
Bit 3—NMI Edge Select (NMIEG): Selects the input edge for the NMI pin.
Rev. 6.00 Feb 22, 2005 page 108 of 1484
REJ09B0103-0600
Bit 5
INTM1
0
1
Bit 3
NMIEG
0
1
Register Descriptions
System Control Register (SYSCR)
Bit 4
INTM0
0
1
0
1
Description
Interrupt request generated at falling edge of NMI input
Interrupt request generated at rising edge of NMI input
Interrupt
Control Mode
0
—
2
—
¾
¾
Description
Interrupts are controlled by I bit
Setting prohibited
Interrupts are controlled by bits I2 to I0, and IPR
Setting prohibited
¾
¾
¾
(Initial value)
(Initial value)