z8f083a ZiLOG Semiconductor, z8f083a Datasheet - Page 109

• Manufacturer Part Number: z8f083a
• Description: High-performance 8-bit Microcontrollers
• Manufacturer: ZiLOG Semiconductor

PS026308-1207
Bit
Position
[7]
START
[6]
[5]
REFEN
[4]
ADCEN
[3]
Reserved
[2:0]
ANAIN
ADC Data High Byte Register
0
Value
(H)
0
1
0
0
1
0
1
000
001
010
011
100
101
110
111
The ADC data high byte register, listed in
bits of the ADC output. Access to the ADC data high byte register is read-only. Reading
the ADC data high byte register latches data in the ADC low bits register.
Description
ADC Start/Busy
Writing to 0 has no effect.
Reading a 0 indicates that the ADC is available to begin a conversion.
Writing to 1 starts a conversion.
Reading a 1 indicates that a conversion is currently in progress.
Reserved—Must Be 0.
Reference Enable
Internal reference voltage is disabled allowing an external reference voltage to be
used by the ADC.
Internal reference voltage for the ADC is enabled. The internal reference voltage
is measured on the VREF pin.
ADC Enable
ADC is disabled for Low Power operation.
ADC is enabled for normal use.
Reserved—Must Be 0.
Analog Input Select
ANA0 input is selected for analog-to-digital conversion.
ANA1 input is selected for analog-to-digital conversion.
ANA2 input is selected for analog-to-digital conversion.
ANA3 input is selected for analog-to-digital conversion.
ANA4 input is selected for analog-to-digital conversion.
ANA5 input is selected for analog-to-digital conversion.
ANA6 input is selected for analog-to-digital conversion.
ANA7 input is selected for analog-to-digital conversion.
Table 61
on page 98, contains the upper eight
Z8 Encore!
Product Specification
Analog-to-Digital Converter
®
F083A Series
97