UPD78F0988AGC-8BS Renesas Electronics America, UPD78F0988AGC-8BS Datasheet - Page 261

• Manufacturer Part Number: UPD78F0988AGC-8BS
• Manufacturer: Renesas Electronics America

Specifications of UPD78F0988AGC-8BS

• Lead Free Status / Rohs Status: Supplier Unconfirmed

14.1 Types of Interrupt Functions
14.2 Interrupt Sources and Configuration
(refer to Table 14-1).
The following three types of interrupt functions are available.
(1) Non-maskable interrupt
(2) Maskable interrupts
(3) Software interrupt
A total of 26 interrupt sources including non-maskable, maskable, and software interrupt sources are available
Remark There are two types of interrupt sources for the watchdog timer (INTWDT): non-maskable interrupts and
This interrupt is unconditionally acknowledged even in the interrupt disabled status. It is not subject to interrupt
priority control and therefore takes precedence over all interrupt requests.
This interrupt generates a standby release signal.
One interrupt request from the watchdog timer is incorporated as a non-maskable interrupt.
These interrupts are subject to mask control, and can be divided into two groups according to the setting of
the priority specification flag register (PR0L, PR0H, PR1L): one with higher priority and the other with lower
priority. Higher-priority interrupts can nest lower-priority interrupts. The priority when two or more interrupt
requests with the same priority occur at the same time is predetermined (refer to Table 14-1).
This interrupt generates a standby release signal.
Eight external interrupt requests and sixteen internal interrupt requests are incorporated as maskable
interrupts.
This is a vectored interrupt generated when the BRK instruction is executed and can be acknowledged even
in the interrupt disabled status. This interrupt is not subject to interrupt priority control.
maskable interrupts (internal). Only one of these interrupts can be selected.
CHAPTER 14 INTERRUPT FUNCTIONS
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