HD6412332 RENESAS [Renesas Technology Corp], HD6412332 Datasheet - Page 130

• Manufacturer Part Number: HD6412332
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

5.2
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, and 1 are described here; for details of the other bits, see section 3, MCU
Operating Modes.
SYSCR is initialized to H'01 by a reset and in hardware standby mode. It 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 5
INTM1
0
1
Bit 3—NMI Edge Select (NMIEG): Selects the input edge for the NMI pin.
Bit 3
NMIEG
0
1
Bit 1—IRQ Input Pin Select (IRQPAS): Selects switching of the pins that can be used for input
of IRQ4 to IRQ7. IRQ4 to IRQ7 input is always performed from one of the ports.
Rev.4.00 Sep. 07, 2007 Page 100 of 1210
REJ09B0245-0400
Bit
Initial value :
R/W
Register Descriptions
System Control Register (SYSCR)
Bit 4
INTM0
1
1
0
0
Description
Interrupt request generated at falling edge of NMI input
Interrupt request generated at rising edge of NMI input
:
:
R/W
—
Interrupt
Control Mode
0
—
2
—
7
0
—
—
6
0
Description
Interrupts are controlled by I bit
Setting prohibited
Interrupts are controlled by bits I2 to I0, and IPR
Setting prohibited
INTM1
R/W
5
0
INTM0
R/W
4
0
NMIEG
R/W
0
3
LWROD IRQPAS
R/W
2
0
R/W
1
0
(Initial value)
(Initial value)
RAME
R/W
0
1