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| Z8F0113HJ005EG Datasheet, PDF (137/245 Pages) Zilog, Inc. – High-Performance 8-Bit Microcontrollers | |||
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Z8 Encore! XP® F0823 Series
Product Specification
122
2
VREFSEL
Internal Voltage
Reference Generator
VREFEXT
ADC 11
Data
Ref Input
VREF
ADC
IRQ
Analog Input
Analog Input
Multiplexer
4
ANAIN
ANA0
ANA1
ANA2
ANA3
ANA4
ANA5
ANA6
ANA7
Figure 19. Analog-to-Digital Converter Block Diagram
Operation
The output of the ADC is an 11-bit, signed, twoâs-complement digital value. The output
generally ranges from 0 to +1023, but offset errors can cause small negative values.
The ADC registers return 13 bits of data, but the two LSBs are intended for compensation
use only. When the compensation routine is performed on the 13 bit raw ADC value, two
bits of resolution are lost because of a rounding error. As a result, the final value is an 11-
bit number.
PS024315-1011
PRELIMINARY
Operation
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