em78p131a ELAN Microelectronics Corp, em78p131a Datasheet - Page 12

• Manufacturer Part Number: em78p131a
• Description: 8-bit Microcontroller With Otp Rom
• Manufacturer: ELAN Microelectronics Corp

EM78P131A
8-Bit Microcontroller with OTP ROM
8 •
5.1.7 RF (Interrupt Status Register)
Note: “ 1 ” means with interrupt request
Bits 3 ~ 7: Not used.
RF can be cleared by instruction but cannot be set.
IOCF is the interrupt mask register.
5.1.8 R10 ~ R2F
These are all 8-bit general-purpose registers.
Bit 0 (TCIF): TCC Overflow Interrupt Flag. Set when TCC overflows, reset by
Bit 1 (ICIF): Port 6 input status changed interrupt flag. Set when Port 6 input changes,
Bit 2 (EXIF): External Interrupt Flag. Set by a falling edge on the /INT pin, reset by
Bit 7
-
software.
reset by software.
software.
Bit 6
The result of reading RF is the "logic AND" of RF and IOCF.
-
Bit 5
-
Bit 4
(This specification is subject to change without further notice)
-
NOTE
“ 0 ” means no interrupt occurs
Bit 3
Product Specification (V1.2) 09.16.2009
-
EXIF
Bit 2
Bit 1
ICIF
TCIF
Bit 0