UPD78F9222MC(T)-5A4-A NEC, UPD78F9222MC(T)-5A4-A Datasheet - Page 221

• Manufacturer Part Number: UPD78F9222MC(T)-5A4-A
• Description: 8BIT MCU, 4K FLASH, 256B RAM, 78F9222
• Manufacturer: NEC

Specifications of UPD78F9222MC(T)-5A4-A

• Controller Family/series: UPD78
• No. Of I/o's: 17
• Ram Memory Size: 256Byte
• Cpu Speed: 10MHz
• No. Of Timers: 4
• No. Of: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 4KB
• Oscillator Type: External, Internal

Address: FFE0H
Address: FFE1H
Symbol
Symbol
IF0
IF1
(1)
Interrupt request flag registers (IF0, IF1)
An interrupt request flag is set to 1 when the corresponding interrupt request is issued, or when the
instruction is executed.
acknowledged or when a reset signal is input.
IF0 and IF1 are set with a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation clears IF0 and IF1 to 00H.
Caution Because P30, P31, P41, and P43 have an alternate function as external interrupt inputs,
××IF×
ADIF
<7>
7
0
1
0
After reset: 00H
After reset: 00H
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.
No interrupt request signal has been issued.
An interrupt request signal has been issued; an interrupt request status.
TMIF010
STIF6
<6>
<6>
Figure 12-2. Format of Interrupt Request Flag Registers (IF0, IF1)
TMIF000
SRIF6
<5>
<5>
It is cleared to 0 by executing an instruction when the interrupt request is
R/W
R/W
CHAPTER 12 INTERRUPT FUNCTIONS
TMIFH1
SREIF6
<4>
<4>
User’s Manual U16898EJ5V0UD
TMIF80
PIF1
<3>
<3>
Interrupt request flag
PIF0
PIF3
<2>
<2>
LVIIF
PIF2
<1>
<1>
0
0
0
0
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