246
CHAPTER 19 INTERRUPT FUNCTIONS
Preliminary User’s Manual U14581EJ3V0UM00
(1) Interrupt request flag registers (IF0L, IF0H, IF1L)
The interrupt request flags are set to 1 when the corresponding interrupt request is generated or an instruction
is executed. They are cleared to 0 when an instruction is executed upon acknowledgment of an interrupt request
or upon application of RESET input.
IF0L, IF0H, and IF1L are set with a 1-bit or 8-bit memory manipulation instruction. When IF0L and IF0H are
combined to form 16-bit register IF0, they are set with a 16-bit memory manipulation instruction.
RESET input clears these registers to 00H.
Figure 19-2. Interrupt Request Flag Register (IF0L, IF0H, IF1L) Format
Address: FFE0H After Reset: 00H R/W
Symbol
7
6
5
4
3
2
1
0
IF0L
PIF1
PIF0
TMIF02
TMIF01
TMIF00
OVFIF
ADIF
WDTIF
Address: FFE1H After Reset: 00H R/W
Symbol
7
6
5
4
3
2
1
0
IF0H
TMIF3
TMIF2
TMIF1
STIF
SRIF
SERIF
CSIIF3
PIF2
Address: FFE2H After Reset: 00H R/W
Symbol
7
6
5
4
3
2
1
0
IF1L
0
0
0
0
0
WTIF
WTIIF
CSIIF2
XXIFX
Interrupt Request Flag
0
No interrupt request signal is generated
1
Interrupt request signal is generated, interrupt request status
Cautions 1. The WDTIF flag is R/W enabled only when the watchdog timer is used as the interval timer.
If watchdog timer mode 1 is used, set the WDTIF flag to 0.
2. Bits 3 to 7 of IF1L must be set to 0.
Содержание mPD780852 Series
Страница 2: ...2 Preliminary User s Manual U14581EJ3V0UM00 MEMO...
Страница 8: ...8 Preliminary User s Manual U14581EJ3V0UM00 MEMO...
Страница 12: ...12 Preliminary User s Manual U14581EJ3V0UM00 MEMO...
Страница 26: ...26 Preliminary User s Manual U14581EJ3V0UM00 MEMO...
Страница 46: ...46 Preliminary User s Manual U14581EJ3V0UM00 MEMO...
Страница 74: ...74 Preliminary User s Manual U14581EJ3V0UM00 MEMO...
Страница 90: ...90 Preliminary User s Manual U14581EJ3V0UM00 MEMO...
Страница 100: ...100 Preliminary User s Manual U14581EJ3V0UM00 MEMO...
Страница 136: ...136 Preliminary User s Manual U14581EJ3V0UM00 MEMO...
Страница 142: ...142 Preliminary User s Manual U14581EJ3V0UM00 MEMO...
Страница 186: ...186 Preliminary User s Manual U14581EJ3V0UM00 MEMO...
Страница 222: ...222 Preliminary User s Manual U14581EJ3V0UM00 MEMO...
Страница 230: ...230 Preliminary User s Manual U14581EJ3V0UM00 MEMO...
Страница 240: ...240 Preliminary User s Manual U14581EJ3V0UM00 MEMO...
Страница 262: ...262 Preliminary User s Manual U14581EJ3V0UM00 MEMO...
Страница 296: ...296 Preliminary User s Manual U14581EJ3V0UM00 MEMO...
Страница 304: ...304 Preliminary User s Manual U14581EJ3V0UM00 MEMO...
Страница 314: ...314 Preliminary User s Manual U14581EJ3V0UM00 MEMO...