Datasheet

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SBAS317E − APRIL 2004 − REVISED MAY 2006
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Enable Interrupt Control (EICON)
7 6 5 4 3 2 1 0 Reset Value
SFR D8h 0 1 EAI AI WDTI 0 0 0 40h
EAI Enable Auxiliary Interrupt. The Auxiliary Interrupt accesses nine different interrupts which are masked and
bit 5 identified by SFR registers PAI (SFR A5h), AIE (SFR A6h), and AISTAT (SFR A7h).
0 = Auxiliary Interrupt disabled (default).
1 = Auxiliary Interrupt enabled.
AI Auxiliary Interrupt Flag. AI must be cleared by software before exiting the interrupt service routine, after the source
bit 4 of the interrupt is cleared. Otherwise, the interrupt occurs again. Setting AI in software generates an Auxiliary
Interrupt, if enabled.
0 = No Auxiliary Interrupt detected (default).
1 = Auxiliary Interrupt detected.
WDTI Watchdog Timer Interrupt Flag. WDTI must be cleared by software before exiting the interrupt service routine.
bit 3 Otherwise, the interrupt occurs again. Setting WDTI in software generates a watchdog time interrupt, if enabled. The
Watchdog timer can generate an interrupt or reset. The interrupt is available only if the reset action is disabled in
HCR0.
0 = No Watchdog Timer Interrupt Detected (default).
1 = Watchdog Timer Interrupt Detected.
ADC Results Low Byte (ADRESL)
7 6 5 4 3 2 1 0 Reset Value
SFR D9h LSB 00h
ADRESL ADC Results Low Byte. This is the low byte of the ADC results.
bits 7−0 Reading from this register clears the ADC interrupt; however, AI in EICON (SFR D8) must also be cleared.
ADC Results Middle Byte (ADRESM)
7 6 5 4 3 2 1 0 Reset Value
SFR DAh 00h
ADRESM ADC Results Middle Byte. This is the middle byte of the ADC results for the MSC1200/01 and the most significant
byte for the MSC1202.
bits 7−0
ADC Results High Byte (ADRESH)
7 6 5 4 3 2 1 0 Reset Value
SFR DBh MSB 00h
ADRESH ADC Results High Byte. This is the high byte and most significant byte of the ADC results for the MSC1200/01.
bits 7−0 This is a sign-extended (Bipolar mode) or zero-padded (Unipolar mode) byte for the MSC1202 (that is, all 0s for
positive ADC or unipolar results and all 1s for negative ADC results).