UPD784026 Renesas Electronics Corporation., UPD784026 Datasheet - Page 538

• Manufacturer Part Number: UPD784026
• Description: 16/8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

20.3 INTERRUPT PROCESSING CONTROL REGISTERS
processing specification. The interrupt control registers are listed in Table 20-3.
498
Interrupt control registers
Interrupt mask registers
In-service priority register
Interrupt mode control register
Watchdog timer mode register
Program status word
PD784026 interrupt processing is controlled for each interrupt request by various control registers that perform interrupt
Register Name
PIC0
PIC1
PIC2
PIC3
CIC00
CIC01
CIC10
CIC11
CIC20
CIC21
CIC30
PIC4
PIC5
ADIC
SERIC
SRIC
CSIIC1
STIC
CSIIC
SERIC2
SRIC2
CSIIC2
STIC2
MK0
MK1L
ISPR
IMC
WDM
PSW
Symbol
CHAPTER 20 INTERRUPT FUNCTIONS
Table 20-3 Control Registers
Registers that perform each interrupt request generation recording, mask
control, vectored interrupt processing or macro service processing specification,
context switching function enabling/disabling, and priority specification.
Maskable interrupt request mask control
Linked to mask control flags in interrupt control registers
Word accesses or byte accesses possible
Records priority of interrupt request currently being acknowledged
Controls nesting of maskable interrupts for which lowest priority level
(level 3) is specified
Specifies priority of interrupts due to NMI pin input and interrupts due to
watchdog timer overflow
Specifies enabling/disabling of maskable interrupt acknowledgment
Function