UPD78F0890GK(A)-GAJ-AX NEC, UPD78F0890GK(A)-GAJ-AX Datasheet - Page 524

• Manufacturer Part Number: UPD78F0890GK(A)-GAJ-AX
• Description: 8BIT MCU, 128K FLASH, 7K RAM, LQFP
• Manufacturer: NEC

Specifications of UPD78F0890GK(A)-GAJ-AX

• Controller Family/series: UPD78F
• No. Of I/o's: 55
• Ram Memory Size: 7KB
• Cpu Speed: 20MHz
• No. Of Timers: 10
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 128KB
• Oscillator Type: External, Internal

<R>
(1) Interrupt request flag registers (IF0L, IF0H, IF1L, IF1H)
524
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 reset signal generation.
When an interrupt is acknowledged, the interrupt request flag is automatically cleared and then the interrupt
routine is entered.
IF0L, IF0H, IF1L, and IF1H are set by a 1-bit or 8-bit memory manipulation instruction. When IF0L and IF0H, and
IF1L and IF1H are combined to form 16-bit registers IF0 and IF1, they are read with a 16-bit memory
manipulation instruction.
Reset signal generation clears these registers to 00H.
Cautions 1. Be sure to set bits 5 to 7 of IF1H to 0.
Address: FFE0H After reset: 00H R/W
Symbol
IF0L
Address: FFE1H
Symbol
IF0H
Address: FFE2H
Symbol
IF1L
Address: FFE3H
Symbol
IF1H
2. When operating a timer, serial interface, or A/D converter after standby release, operate it
Figure 17-2. Format of Interrupt Request Flag Registers (IF0L, IF0H, IF1L, IF1H)
C0ERRIF
DUALIF1
DUALIF7
once after clearing the interrupt request flag. An interrupt request flag may be set by noise.
SRIF61
DMUIF
XXIFX
WTIIF
PIF6
<7>
<7>
<7>
7
0
0
1
After reset: 00H
After reset: 00H
After reset: 00H
No interrupt request signal is generated
Interrupt request is generated, interrupt request status
DUALIF6
DURLIF0
TMIF013
SREIF61
CSIIF10
ADIF
PIF5
<6>
<6>
<6>
6
0
CHAPTER 17 INTERRUPT FUNCTIONS
R/W
R/W
R/W
DUALIF5
TMIF003
TMIF010
STIF60
PIF4
<5>
<5>
<5>
User’s Manual U17554EJ4V0UD
5
0
DUALIF4
TMIF012
TMIF000
TMIF011
SRIF60
PIF3
<4>
<4>
<4>
<4>
Interrupt request flag
DUALIF3
TMIF002
SREIF60
TMIF001
TMIF50
PIF2
<3>
<3>
<3>
<3>
C0TRXIF
CSIIF11
TMIFH0
PIF1
<2>
<2>
<2>
<2>
C0RECIF
TMIFH1
WTIF
PIF0
<1>
<1>
<1>
<1>
C0WUPIF
DUALIF2
TMIF51
STIF61
LVIIF
PIF7
<0>
<0>
<0>
<0>