mc68hc11k4 Freescale Semiconductor, Inc, mc68hc11k4 Datasheet - Page 221
mc68hc11k4
Manufacturer Part Number
mc68hc11k4
Description
Mc68hc11k1 Microcontroller
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC68HC11K4.pdf
(290 pages)
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10.1 Contents
10.2 Introduction
M68HC11K Family
MOTOROLA
Technical Data — M68HC11K Family
Section 10. Analog-to-Digital (A/D) Converter
10.2
10.3
10.3.1
10.3.2
10.3.3
10.3.4
10.4
10.4.1
10.4.2
10.4.3
10.5
10.5.1
10.5.2
The analog-to-digital (A/D) system in M68HC11 microcontrollers is an
8-channel, 8-bit, multiplexed input converter. It employs a successive
approximation technique with an all-capacitive charge redistribution
system that does not require external sample-and-hold circuits. A/D
converter timing can be synchronized either to the E clock or an internal
resistor-capacitor (RC) oscillator. Separate power supply inputs, AV
and AV
Freescale Semiconductor, Inc.
For More Information On This Product,
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222
A/D Control/Status Registers . . . . . . . . . . . . . . . . . . . . . . . . . 226
Design Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230
SS
Multiplexer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .223
Analog Converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223
Result Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .223
Digital Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224
System Configuration Options Register . . . . . . . . . . . . . . . 226
A/D Control/Status Register . . . . . . . . . . . . . . . . . . . . . . . . 227
Analog-to-Digital Converter Result Registers. . . . . . . . . . . 229
A/D Input Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230
Operation in Stop and Wait Modes . . . . . . . . . . . . . . . . . .230
, allow independent bypassing for noise immunity.
Analog-to-Digital (A/D) Converter
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Technical Data
DD
221
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