upd78f0124hgba1-8et-a Renesas Electronics Corporation., upd78f0124hgba1-8et-a Datasheet - Page 320
upd78f0124hgba1-8et-a
Manufacturer Part Number
upd78f0124hgba1-8et-a
Description
8-bit Single-chip Microcontrollers
Manufacturer
Renesas Electronics Corporation.
Datasheet
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16.1 Interrupt Function Types
(1) Maskable interrupts
(2) Software interrupt
16.2 Interrupt Sources and Configuration
320
The following two types of interrupt functions are used.
A total of 24 interrupt sources exist for maskable and software interrupts (refer to Table 16-1).
These interrupts undergo mask control. Maskable interrupts can be divided into a high interrupt priority group
and a low interrupt priority group by setting the priority specification flag registers (PR0L, PR0H, PR1L).
Multiple interrupt servicing can be applied to low-priority interrupts when high-priority interrupts are generated. If
two or more interrupts with the same priority are generated simultaneously, each interrupt is serviced according to
its predetermined priority (refer to Table 16-1).
A standby release signal is generated and STOP and HALT modes are released.
Eight external interrupt requests and 15 internal interrupt requests are provided as maskable interrupts.
This is a vectored interrupt generated by executing the BRK instruction. It is acknowledged even when interrupts
are disabled. The software interrupt does not undergo interrupt priority control.
CHAPTER 16 INTERRUPT FUNCTIONS
User’s Manual U16962EJ3V0UD
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