Format Of Interrupt Request Flag Register 1L; Format Of Interrupt Mask Flag Register 1L - NEC PD78056F User Manual

(1) Interrupt request flag register 1L (IF1L)
It indicates whether a watch timer overflow is detected or not.
It is set by a 1-bit memory manipulation instruction and 8-bit memory manipulation instruction.
It is set to 00H by the RESET signal input.
Figure 21-19. Format of Interrupt Request Flag Register 1L
Symbol 7 6 5
IF1L WTIF 0 0
Caution Be sure to set bits 3 through 6 to 0.
(2) Interrupt mask flag register 1L (MK1L)
It is used to set the standby mode enable/disable at the time the standby mode is released by the watch timer.
It is set by a 1-bit memory manipulation instruction and 8-bit memory manipulation instruction.
It is set to FFH by the RESET signal input.
Figure 21-20. Format of Interrupt Mask Flag Register 1L
Symbol 7 6 5
MK1L WTMK 1 1
Caution Be sure to set bits 3 through 6 to 1.
CHAPTER 21 INTERRUPT AND TEST FUNCTIONS
4 3 2 1 0
0 0 ADIF TMIF2 TMIF1
4 3 2 1 0
0 0 ADMK TMMK2 TMMK1
After
Address
Reset
FFE2H 00H
WTIF
Watch Timer Overflow Detection Flag
0 Not detected
1 Detected
After
Address
Reset
FFE6H FFH
WTMK
Standby Mode Control by Watch Timer
0 Enables releasing the standby mode.
1 Disables releasing the standby mode.
R/W
R/W
R/W
R/W
503