em78p257 ELAN Microelectronics Corp, em78p257 Datasheet - Page 27

• Manufacturer Part Number: em78p257
• Description: 8-bit Microcontroller
• Manufacturer: ELAN Microelectronics Corp

This specification is subject to change without prior notice.
12. IOC51 ( TCCA Counter )
13. IOC61 ( TCCBL Counter) /LSB Counter
14. IOC71 (TCCBH Counter) /MSB Counter
• Bit 4 (CMP1IE) CMP1IF interrupt enable bit.
• Bit 3 (CMP/PPC) Wake-up by which Interrupt sources.
• Bit 2 (EXIE) EXIF interrupt enable bit.
• Bit 1 (ICIE) ICIF interrupt enable bit.
• Bit 0 (TCIE) TCIF interrupt enable bit.
• Individual interrupt is enabled by setting its associated control bit in the IOCF0 to "1".
• Global interrupt is enabled by the ENI instruction and is disabled by the DISI instruction. Refer to Fig.
• IOCF0 register is both readable and writable.
10.
0: disable CMP2IF interrupt
1: enable CMP2IF interrupt
0: disable CMP1IF interrupt
1: enable CMP1IF interrupt
0: PPC, wake-up by Port 5 input status change. (if enabled)
1: CMP, wake-up by comparators status change. (if enabled)
0: disable EXIF interrupt
1: enable EXIF interrupt
0: disable ICIF interrupt
1: enable ICIF interrupt
0: disable TCIF interrupt
1: enable TCIF interrupt
An eight -bit clock counter. It can be read, written and cleared on any reset condition. When in
Mouse-Mode, it is Up/Down Counter, else it is UP Counter.
An eight-bit clock counter is for the least significant byte of TCCBX. TCCBL. It can be read, written
and cleared on any reset condition. When in Mouse-Mode, it is Up/Down Counter; When in IR-Mode,
it is Down Counter, else it is Up Counter.
An eight -bit clock counter is for the most significant byte of TCCBX. TCCBH. It can be read, written
and cleared on any reset condition. When TCCBE(IOC80) is “0” THEN TCCBH is disable, TCCBE
is”1” then TC CB is 16 bit length counter. When it is in IR-Mode, it is Down Counter, else it is UP
Counter.
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EM78P257
07.27.2004 (V1.4)
OTP ROM