z8f0822 ZiLOG Semiconductor, z8f0822 Datasheet - Page 160

• Manufacturer Part Number: z8f0822
• Description: High Performance 8-bit Microcontrollers
• Manufacturer: ZiLOG Semiconductor

Analog-to-Digital Converter
Architecture
PS022517-0508
The Analog-to-Digital Converter (ADC) converts an analog input signal to a 10-bit binary
number. The features of the sigma-delta ADC include:
•
•
•
The ADC is available only in the Z8F0822, Z8F0821, Z8F0422, Z8F0421, Z8R0822,
Z8R0821, Z8R0422 and Z8R0421 devices.
Figure 32
voltage reference generator) of the ADC. The ADC converts an analog input signal to its
digital representation. The 5-input analog multiplexer selects one of the 5 analog input
sources. The ADC requires an input reference voltage for the conversion. The voltage ref-
erence for the conversion can be input through the external
nally by the voltage reference generator.
IRQ
Five analog input sources are multiplexed with GPIO ports.
Interrupt upon conversion complete.
Internal voltage reference generator.
displays the three major functional blocks (converter, analog multiplexer, and
Reference Generator
Analog-to-Digital
Figure 32. Analog-to-Digital Converter Block Diagram
Internal Voltage
Reference Input
Converter
Analog Input
Analog Input
ANAIN[3:0]
Multiplexer
Z8 Encore! XP
VREF
Product Specification
Analog-to-Digital Converter
pin or generated inter-
VREF
ANA0
ANA1
ANA2
ANA3
ANA4
®
F0822 Series
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