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MC68HC908AP16CFB Datasheet(PDF) 18 Page - Motorola, Inc

Part # MC68HC908AP16CFB
Description  Microcontrollers
PDF  440 Pages
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Manufacturer  MOTOROLA [Motorola, Inc]
Direct Link  http://www.freescale.com
Logo MOTOROLA - Motorola, Inc

MC68HC908AP16CFB Datasheet(HTML) 18 Page - Motorola, Inc

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Table of Contents
Data Sheet
MC68HC908AP Family — Rev. 2.5
18
MOTOROLA
Section 17. Analog-to-Digital Converter (ADC)
17.1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 345
17.2
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 345
17.3
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 347
17.3.1
ADC Port I/O Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 347
17.3.2
Voltage Conversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 347
17.3.3
Conversion Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 349
17.3.4
Continuous Conversion . . . . . . . . . . . . . . . . . . . . . . . . . . . 349
17.3.5
Auto-Scan Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 350
17.3.6
Result Justification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 350
17.3.7
Data Register Interlocking . . . . . . . . . . . . . . . . . . . . . . . . . 351
17.3.8
Monotonicity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 351
17.4
Interrupts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 352
17.5
Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 352
17.5.1
Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 352
17.5.2
Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 352
17.6
I/O Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 352
17.6.1
ADC Voltage In (VADIN) . . . . . . . . . . . . . . . . . . . . . . . . . . .353
17.6.2
ADC Analog Power Pin (VDDA) . . . . . . . . . . . . . . . . . . . . .353
17.6.3
ADC Analog Ground Pin (VSSA). . . . . . . . . . . . . . . . . . . . .353
17.6.4
ADC Voltage Reference High Pin (VREFH). . . . . . . . . . . . .353
17.6.5
ADC Voltage Reference Low Pin (VREFL) . . . . . . . . . . . . .353
17.7
I/O Registers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 354
17.7.1
ADC Status and Control Register. . . . . . . . . . . . . . . . . . . . 354
17.7.2
ADC Clock Control Register. . . . . . . . . . . . . . . . . . . . . . . . 356
17.7.3
ADC Data Register 0 (ADRH0 and ADRL0). . . . . . . . . . . . 358
17.7.4
ADC Auto-Scan Mode Data Registers (ADRL1–ADRL3). . 360
17.7.5
ADC Auto-Scan Control Register (ADASCR). . . . . . . . . . . 360
Section 18. Input/Output (I/O) Ports
18.1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 363
18.2
Port A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 366
18.2.1
Port A Data Register (PTA) . . . . . . . . . . . . . . . . . . . . . . . . 366
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com



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