PD78F0701Y_15 Datasheet, PDF (16/54 Pages) Renesas Technology Corp – 8-BIT SINGLE-CHIP MICROCONTROLLER

µPD78F0701Y
3. SELECTING INTERNAL BUS CONTROLLERS (DCAN and IEBus)
The µPD78F0701Y has two internal bus controllers: a DCAN controller and IEBus controller. These bus
controllers cannot be used simultaneously.
By default, the DCAN controller is selected.
The IEBus controller is selected by making the IEBus unit active (by setting bit 7 (ENIEBUS) of the IEBus control
register 0 (BRC0) to 1).
The default statuses of the interrupt request signals and pins differ depending on which of the internal bus
controllers is used.
Table 3-1 shows the default statuses of the interrupt request signals and pins.
Table 3-1. Default Statuses of Interrupt Request Signals and Pins
Item
Default status of CTXD/ITX0 pin
Note
Interrupt request signals
Using DCAN controller
High level
INTCR
INTCT
INTCE
Using IEBus controller
Low level
INTIE1
INTIE2
None
Note The statuses of the flags corresponding to the interrupt signals also differ.
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Preliminary Product Information U13563EJ2V0PM00