UPD78F9234MC-5A4-A Datasheet, PDF (232/419 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

CHAPTER 13 INTERRUPT FUNCTIONS
(2) Interrupt mask flag registers 0, 1 (MK0, MK1)
The interrupt mask flag is used to enable and disable the corresponding maskable interrupts.
MK0 and MK1 are set with a 1-bit or 8-bit memory manipulation instruction.
Generation of reset signal sets MK0 and MK1 to FFH.
Figure 13-3. Format of Interrupt Mask Flag Registers 0, 1 (MK0, MK1)
Address: FFE4H After reset: FFH R/W
Symbol <7>
<6>
<5>
<4>
<3>
<2>
<1>
0
MK0 ADMK TMMK010 TMMK000 TMMKH1 PMK1 PMK0 LVIMK
1
Address: FFE5H After reset: FFH R/W
Symbol
7
<6>
<5>
<4>
<3>
<2>
<1>
0
MK1
1
STMK6 SRMK6 SREMK6 TMMK80 PMK3 PMK2
1
××MK×
0
1
Enables interrupt servicing.
Disables interrupt servicing.
Interrupt servicing control
Caution
Because P30, P31, P41, and P43 have an alternate function as external interrupt inputs,
when the output level is changed by specifying the output mode of the port function, an
interrupt request flag is set. Therefore, the interrupt mask flag should be set to 1 before
using the output mode.
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User’s Manual U17446EJ5V0UD