LAPIS Semiconductor ML610421, User Manual, Page: 243 / 437

ML610Q421/ML610Q422/ML610421User’s Manual
Chapter 17 Port 0
17 – 6
17.2.5 External Interrupt Control Register 2 (EXICON2)
Address: 0F022H
Access: R/W
Access size: 8 bits
Initial value: 00H
7 6 5 4 3 2 1 0
EXICON2
   
P03SM P02SM P01SM P00SM
R/W R/W R/W R/W R/W R/W R/W R/W R/W
Initial value 0 0 0 0 0 0 0 0
EXICON2 is a special function register (SFR) to select detection of signal edge for interrupts with or without sampling.
[Description of Bits]
•
P03SM-P00SM (bits 3-0)
The P03SM to P00SM bits are used to select detection of signal edge for Port 0 interrupts with or without sampling.
The sampling clock is T16KHZ of the low-speed time base counter (LTBC).
P00SM Description
0
Detects the input signal edge for a P00 interrupt without sampling (initial
value).
1 Detects the input signal edge for a P00 interrupt with sampling.
P01SM Description
0
Detects the input signal edge for a P01 interrupt without sampling (initial
value).
1 Detects the input signal edge for a P01 interrupt with sampling.
P02SM Description
0
Detects the input signal edge for a P02 interrupt without sampling (initial
value).
1 Detects the input signal edge for a P02 interrupt with sampling.
P03SM Description
0
Detects the input signal edge for a P03 interrupt without sampling (initial
value).
1 Detects the input signal edge for a P03 interrupt with sampling.
Note:
In STOP mode, since the 16 kHz sampling clock stops, no sampling is performed regardless of the values set in P00SM
to P03SM.