h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 163

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

5.2.6
KMIMR is an 8-bit readable/writable register that performs mask control for the keyboard matrix
interrupt inputs (pins KIN7 to KIN0) and IRQ6 pin. To enable key-sense input interrupts from
multiple pin inputs in keyboard matrix scanning/sensing, clear the corresponding mask bits to 0.
KMIMR is initialized to H'BF by a reset and in hardware standby mode, and only IRQ6 (KIN6)
input is enabled.
Bits 7 to 0—Keyboard Matrix Interrupt Mask (KMIMR7 to KMIMR0): These bits control
key-sense input interrupt requests (KIN7 to KIN0).
Note:
Figure 5.2 shows the relationship between interrupts IRQ6, interrupts KIN7 to KIN0, and registers
KMIMR.
Bits 7 to 0
KMIMR7 to
KMIMR0
0
1
Bit
Initial value
Read/Write
* However, the initial value of KMIMR6 is 0 because the KMIMR6 bit controls both IRQ6
Keyboard Matrix Interrupt Mask Register (KMIMR)
interrupt request masking and key-sense input enabling.
Description
Key-sense input interrupt requests enabled
Key-sense input interrupt requests disabled
KMIMR7
R/W
7
1
KMIMR6
R/W
6
0
KMIMR5
R/W
5
1
KMIMR4
R/W
4
1
Rev. 4.00 Jun 06, 2006 page 109 of 1004
KMIMR3
R/W
3
1
KMIMR2
Section 5 Interrupt Controller
R/W
2
1
KMIMR1
R/W
REJ09B0301-0400
1
1
(Initial value) *
KMIMR0
R/W
0
1