st2024c Sitronix Technology Corporation, st2024c Datasheet - Page 16

• Manufacturer Part Number: st2024c
• Description: 24k 8-bit Single Chip Microcontroller
• Manufacturer: Sitronix Technology Corporation

10.2.4.2
ST2024C has hardware debounce option for Port-A
interrupt. The debounce will be enabled with “1” and disable
with “0” for PDBN. The debounce will active when Port-A
transition occurs, PDBN enable and OSCX enable.
Ver 2.2
Address Name
$00F
Bit 6:
PMCR
PDBN : Enable Port-A interrupt debounce bit
Port-A interrupt debounce
1 = Debounce for Port-A interrupt
0 = No debounce for Port-A interrupt
R/W
R/W
TABLE 10-10: PORT CONDITION CONTROL REGISTER (PMCR)
PULL
Bit 7
PDBN
Bit 6
INTEG
Bit 5
16/54
Bit 4
-
The debounce time is OSCX x 512 cycles(about 16 ms).
Refer to the TABLE 9-10.
Bit 3
-
Bit 2
-
PSG0
Bit 1
PSGB
Bit 0
100 - - -00
ST2024C
Default
1/31/08