HD64F2149 Datasheet, PDF (140/1035 Pages) Renesas Technology Corp – Hitachi 16-Bit Single-Chip Microcomputer

KMIMR is initialized to H'BF by a reset or 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).
Bits 7 to 0
KMIMR7 to
KMIMR0 Description
0
Key-sense input interrupt requests enabled
1
Key-sense input interrupt requests disabled
(Initial value)*
Note: * However, the initial value of KMIMR6 is 0, as KMIMR6 bit masks the IRQ6 interrupt request
and enables key-sense input.
5.2.7
Keyboard Matrix Interrupt Mask Register A (KMIMRA)
Wakeup Event Interrupt Mask Registr B (WUEMRB)
Bit
Initial value
Read/Write
7
6
5
4
3
2
1
KMIMR15 KMIMR14 KMIMR13 KMIMR12 KMIMR11 KMIMR10 KMIMR9
1
1
1
1
1
1
1
R/W
R/W
R/W
R/W
R/W
R/W
R/W
0
KMIMR8
1
R/W
Bit
Initial value
Read/Write
7
6
5
4
3
2
1
0
WUEMR7 WUEMR6 WUEMR5 WUEMR4 WUEMR3 WUEMR2 WUEMR1 WUEMR0
1
1
1
1
1
1
1
1
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
KMIMRA is an 8-bit readable/writable register that performs mask control for the keyboard
matrix interrupt inputs (pins KIN15 to KIN8). To enable key-sense input interrupts from multiple
pin inputs in keyboard matrix scanning/sensing, clear the corresponding mask bits to 0.
KMIMRA is initialized to H'FF by a reset and in hardware standby mode.
Bits 7 to 0—Keyboard Matrix Interrupt Mask (KMIMR15 to KMIMR8): These bits control
key-sense input interrupt requests (KIN15 to KIN8).
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