h8s-2169 Renesas Electronics Corporation., h8s-2169 Datasheet - Page 135

• Manufacturer Part Number: h8s-2169
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

5.2.3
IER is an 8-bit readable/writable register that controls enabling and disabling of interrupt requests
IRQ7 to IRQ0.
IER is initialized to H'00 by a reset and in hardware standby mode.
Bits 7 to 0—IRQ7 to IRQ0 Enable (IRQ7E to IRQ0E): These bits select whether IRQ7 to
IRQ0 are enabled or disabled.
5.2.4
ISCRH and ISCRL are 8-bit readable/writable registers that select rising edge, falling edge, or
both edge detection, or level sensing, for the input at pins IRQ7 to IRQ0.
Each of the ISCR registers is initialized to H'00 by a reset and in hardware standby mode.
Bit n
IRQnE
0
1
Bit
Initial value
Read/Write
Bit
Initial value
Read/Write
Bit
Initial value
Read/Write
ISCRH
ISCRL
IRQ Enable Register (IER)
IRQ Sense Control Registers H and L (ISCRH, ISCRL)
Description
IRQn interrupt disabled
IRQn interrupt enabled
IRQ7SCB
IRQ3SCB
IRQ7E
R/W
R/W
R/W
15
7
0
0
7
0
IRQ7SCA
IRQ3SCA
IRQ6E
R/W
R/W
R/W
14
6
0
0
6
0
IRQ6SCB
IRQ2SCB
IRQ5E
R/W
R/W
R/W
13
5
0
0
5
0
IRQ6SCA
IRQ2SCA
IRQ4E
R/W
R/W
R/W
12
4
0
0
4
0
Rev. 3.00 Jan 18, 2006 page 107 of 1044
IRQ5SCB
IRQ1SCB
IRQ3E
R/W
R/W
R/W
11
3
0
0
3
0
IRQ5SCA
IRQ1SCA
IRQ2E
Section 5 Interrupt Controller
R/W
R/W
R/W
10
2
0
0
2
0
IRQ4SCB
IRQ0SCB
IRQ1E
R/W
R/W
R/W
REJ09B0280-0300
1
0
9
0
1
0
(Initial value)
IRQ4SCA
IRQ0SCA
(n = 7 to 0)
IRQ0E
R/W
R/W
R/W
0
0
8
0
0
0