UPD78F9418AGK-9EU Renesas Electronics America, UPD78F9418AGK-9EU Datasheet - Page 235

• Manufacturer Part Number: UPD78F9418AGK-9EU
• Manufacturer: Renesas Electronics America

Specifications of UPD78F9418AGK-9EU

• Lead Free Status / Rohs Status: Supplier Unconfirmed

Symbol
(2)
Cautions 1. If the TMMK4 flag is read when the watchdog timer is used in watchdog timer mode 1 or 2, its
MK0
MK1
Interrupt mask flag registers 0, 1 (MK0 and MK1)
The interrupt mask flag is used to enable/disable the corresponding maskable interrupt service.
MK0 and MK1 are set using a 1-bit or 8-bit memory manipulation instruction.
RESET input sets MK0 and MK1 to FFH.
CMPMK0 ADMK0 KRMK00 TMMK50 TMMK02 TMMK01 TMMK00 WTIMK
XXMKX
WTMK STMK00 SRMK00 PMK3 PMK2 PMK1 PMK0 TMMK4
<7>
<7>
0
1
2. Because port 2 has an alternate function as an external interrupt input, when the output level
value becomes undefined.
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.
<6>
<6>
Interrupt servicing enabled
Interrupt servicing disabled
<5>
<5>
Figure 15-3. Format of Interrupt Mask Flag Register
<4>
<4>
<3>
<3>
CHAPTER 15 INTERRUPT FUNCTIONS
<2>
<2>
User’s Manual U13952EJ3V1UD
<1>
<1>
Interrupt servicing control
<0>
<0>
Address
FFE4H
FFE5H
After reset
FFH
FFH
R/W
R/W
R/W
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