Z8F082ASH020SC Datasheet, PDF (139/244 Pages) Zilog, Inc. – Z8 Encore XP-R F08xA Series with eXtended Peripherals

Z8 Encore! XP^® F08xA Series
Product Specification
121
Reserved—Must be undefined.
OVF—Overflow Status
0= An overflow did not occur in the digital filter for the current sample.
1= An overflow did occur in the digital filter for the current sample.
ADC High Threshold Register
The ADC High Threshold register is used to set the trigger point above which an ADC
sample causes a CPU interrupt.
Table 74. ADC High Threshold High Byte (ADCTH)
BITS
FIELD
RESET
R/W
ADDR
7
6
5
4
3
2
1
0
ADCTH
FF
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
F74H
ADCTH—ADC High Threshold
These bits are compared to the most significant 8 bits of the single-ended ADC value. If
the ADC value exceeds this, an interrupt is asserted. The alarm function is not available in
DIFFERENTIAL mode.
ADC Low Threshold Register
The ADC Low Threshold register is used to set the trigger point below which an ADC
sample causes a CPU interrupt.
Table 75. ADC Low Threshold High Byte (ADCTL)
BITS
FIELD
RESET
R/W
ADDR
7
6
5
4
3
2
1
0
ADCTL
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
F76H
ADCTL—ADC Low Threshold
These bits are compared to the most significant 8 bits of the single-ended ADC value. If
the ADC value drops below this value an interrupt is asserted. The alarm function is not
available in DIFFERENTIAL mode.
PS024705-0405
PRELIMINARY
Analog-to-Digital Converter