h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 159

• Manufacturer Part Number: h8s-2138
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

5.2.2
The ICR registers are three 8-bit readable/writable registers that set the interrupt control level for
interrupts other than NMI and address break.
The correspondence between ICR settings and interrupt sources is shown in table 5.3.
The ICR registers are initialized to H'00 by a reset and in hardware standby mode.
Bit n—Interrupt Control Level (ICRn): Sets the control level for the corresponding interrupt
source.
Table 5.3
Bit n
ICRn
0
1
Register 7
ICRA
ICRB
ICRC
Bit
Initial value
Read/Write
Interrupt Control Registers A to C (ICRA to ICRC)
IRQ0
A/D
converter
SCI
channel 0
Description
Corresponding interrupt source is control level 0 (non-priority)
Corresponding interrupt source is control level 1 (priority)
Correspondence between Interrupt Sources and ICR Settings
ICR7
R/W
7
0
6
IRQ1
Free-
running
timer
SCI
channel 1
ICR6
R/W
6
0
5
IRQ2
IRQ3
—
SCI
channel 2
ICR5
R/W
5
0
4
IRQ4
IRQ5
—
IIC
channel 0
(option)
ICR4
R/W
4
0
Bits
3
IRQ6
IRQ7
8-bit
timer
channel 0
IIC
channel 1
(option)
Rev. 4.00 Jun 06, 2006 page 105 of 1004
ICR3
R/W
3
0
2
DTC
8-bit
timer
channel 1
—
ICR2
Section 5 Interrupt Controller
R/W
2
0
1
Watchdog
timer 0
8-bit
timer
channels
X, Y
—
ICR1
R/W
REJ09B0301-0400
1
0
(Initial value)
0
Watchdog
timer 1
HIF
—
(n = 7 to 0)
ICR0
R/W
0
0