Rohm LAPIS SEMICONDUCTOR ML620Q503, User Manual

Page: 112 / 553

ML620Q503/Q504 User's Manual
Chapter 5 Interrupts
FEUL620Q504 5–42
5.2.20 External Interrupt Control Registers 23 (EXICON23)
Address: 0F042H
Access: R/W
Access size: 8/16 bit
Initial value: 0000H
7 6 5 4 3 2 1 0
EXICON2 EXI7SM EXI6SM EXI5SM EXI4SM EXI3SM EXI2SM EXI1SM EXI0SM
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
15 14 13 12 11 10 9 8
EXICON3 EXI7FL EXI6FL EXI5FL EXI4FL EXI3FL EXI2FL EXI1FL EXI0FL
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
EXICON23 is a special function register (SFR) used to select the interrupt edge of external interrupt.
Description of Bits
•
EXI7-0SM (bits 7 to 0)
The EXI7-0SM bits are used to select detection of signal edge for an external interrupt with or without
sampling. The sampling clock is T16KHz of the low-speed time base counter (LTBC).
EXI7SM to EXI0SM Description
0 Detects the input signal edge for an external interrupt without sampling
(initial value).
1 Detects with sampling
[Note]
In STOP mode, since the sampling clock (T16KHZ) stops, no sampling is performed regardless of the
values set in EXI7SM to EXI0SM.
•
EXI7-0FL (bits 15 to 8)
The EXI7-0FL bits are used to select detection of signal edge for an external interrupt with or without
noise filter.
EXI7FL to EXI0FL Description
0 Detects without noise filter (initial value)
1 Detects with noise filter