z8f083a ZiLOG Semiconductor, z8f083a Datasheet - Page 106

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

BUSY
Operation
PS026308-1207
Output
ADCLK
Data
ADCEN
START
10
Reference Generator
The ADC converts the analog input, ANA
equation for calculating the digital value is represented by:
Assuming zero gain and offset errors, any voltage outside the ADC input limits of AV
and V
the ADC control register’s start bit.
Initiating a new conversion, stops any conversion currently in progress and begins a new
conversion. To avoid disrupting a conversion already in progress, the START bit is read to
determine ADC operation status (busy or available).
ADCOutput
Analog-to-Digital
Internal Voltage
Converter
Reference Input
REF
Analog Input
Figure 11. Analog-to-Digital Converter Block Diagram
returns all 0s or 1s, respectively. A new conversion is initiated by a software to
=
1024
×
(
ANA
Sample-and-Hold
x
÷
V
Amplifier
VR2
REF
)
X
, to a 10-bit digital representation. The
RBUF
Analog Input
ANAIN[2:0]
Multiplexer
Z8 Encore!
Product Specification
Analog-to-Digital Converter
SAMPLE/HOLD
®
Sel 28 Package
F083A Series
REFEN
VREF
ANA0
ANA1
ANA2
ANA3
ANA4
ANA5
ANA6
ANA7
SS
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