CHAPTER 7 INTERRUPT/EXCEPTION PROCESSING FUNCTION
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User’s Manual U14492EJ3V0UD
(2) Signal edge selection registers 10, 11 (SESA10, SESA11)
These registers specify the valid edge of external interrupt requests (INTP100, INTP101, INTP110, INTP111,
TIUD10, TIUD11, TCUD10, TCUD11, TCLR10, and TCLR11), input via external pins. The correspondence
between each register and the external interrupt requests that register controls is shown below.
•
SESA10: TIUD10, TCUD10, TCLR10, INTP100, INTP101
•
SESA11: TIUD11, TCUD11, TCLR11, INTP110, INTP111
The valid edge can be specified independently for each pin (rising edge, falling edge, or both rising and
falling edges).
These registers can be read/written in 8-bit or 1-bit units.
Cautions 1. The bits of the SESA1n register cannot be changed during TM1n operation (TM1CEn bit
of timer control registers 10, 11 (TMC10, TMC11) = 1).
2. The TM1CEn bit must be set (1) before using the TCUD10/INTP100, TCLR10/INTP101,
TCUD11/INTP110, and TCLR11/INTP111 pins as INTP100, INTP101, INTP110, and
INTP111, even if not using timer 1.
3. Before setting the INTP100, INTP101, INTP110, INTP111, TIUD10, TIUD11, TCUD10,
TCUD11, TCLR10, and TCLR11 pins to the trigger mode, set the PMC1 register.
If the PMC1 register is set after the SESA10 and SESA11 registers have been set, an
illegal interrupt may occur as soon as the PMC1 register is set.
Содержание V850E/IA1 mPD703116
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