EM78P312N
8-Bit Microcontroller
RE (Interrupt Status Flag Register 1)
Bit 7
EXIF5
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
TCIF2
ADIF
0
EXIF3
TCIF4
SPIF
TCIF3
Bit 7 ( EXIF5 ) : External Interrupt Flag (/INT5), flag cleared by software.
Bit 6 ( TCIF2 ) : 16-bit Timer/Counter 2 Interrupt Flag, flag cleared by software.
Bit 5 ( ADIF ) : AD conversion complete flag, flag cleared by software.
Bit 3 ( EXIF3 ) : External Interrupt Flag (/INT3), flag cleared by software.
Bit 2 ( TCIF4 ) : 8-bit Timer/Counter 4 Interrupt Flag, flag cleared by software.
Bit 1 ( SPIF ) : SPI Mode Interrupt Flag, flag cleared by software.
Bit 0 ( TCIF3 ) : 8-bit Timer/Counter 3 interrupt flag, flag cleared by software.
0 : means no interrupt request
1 : means with interrupt request
z
z
z
ISFR1 can be cleared by instruction, but cannot be set by instruction
IMR1 is the interrupt mask register
Note that reading ISFR1 will obtain the result of the ISFR1 "logic AND" and
IMR1.
RF(Interrupt Status Flag Register 2)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0
UERRIF
RBFF
TBEF
TBIF
EXIF1
0
TCIF0
Bit 6 (UERRIF) : UART Receiving Error Interrupt, cleared by software or UART
disabled.
Bit 5 (RBFF) : UART Receive Mode Data Buffer Full Interrupt Flag. Flag cleared by
software.
Bit 4 (TBEF) : UART Transmit Mode Data Buffer Empty Interrupt Flag. Flag cleared by
software.
Bit 3 (TBIF) : Time Base Timer Interrupt Flag. Flag cleared by software.
Bit 2 (EXIF1) : External Interrupt Flag (INT1). Flag cleared by software.
Bit 0 (TCIF0) : TCC Overflow Interrupt Flag. Set as TCC overflows; flag cleared by
software.
0 : means no interrupt request
1 : means with interrupt request
10 •
Product Specification (V1.0) 10.03.2006
(This specification is subject to change without further notice)
ELAN [ ELAN MICROELECTRONICS CORP ]
