MC68HC05PV8 Datasheet, PDF (144/196 Pages) Freescale Semiconductor, Inc – Techinal Data - rev 1.9

Technical Data
Freescale Semiconductor, Inc.
PA1... PA6
INPUT PROTECTION
VDD
< 10pF
VSS
DIFFUSION
*
~ 50 KΩ
8pF
DAC
CAPACITANCE
VREFL / VSS
* THIS ANALOG SWITCH IS CLOSED ONLY DURING THE 12-CYCLE SAMPLE TIME
Figure 10-4 Electrical Model of an A/D Input Pin
Be sure that pins used as analog inputs are configured as inputs with
their appropriate pull-up resistors disabled (enabled after reset).
10.10 Conversion Accuracy Definitions
This section explains the terminology used to specify the analog
characteristics of the A/D converter.
10.10.1 Transfer Curve
The ideal transfer curve can be thought of as a staircase of uniform step
size with perfect positioning of the endpoints. Figure 10-5 shows the
ideal transfer curve of an 8-bit A/D converter.
Technical Data
MC68HC(8)05PV8/A — Rev. 1.9
Analog to Digital Converter
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