MC68HC908JL8 MOTOROLA [Motorola, Inc], MC68HC908JL8 Datasheet - Page 208

• Manufacturer Part Number: MC68HC908JL8
• Description: Motorola reserves the right to make changes without further notice to any products herein
• Manufacturer: MOTOROLA [Motorola, Inc]

Analog-to-Digital Converter (ADC)
12.3 Features
12.4 Functional Description
Technical Data
208
Addr.
$003C
$003D
$003E
ADC Input Clock Register
ADC Status and Control
Register Name
ADC Data Register
(ADICLK)
(ADSCR)
Register
(ADR)
Features of the ADC module include:
Thirteen ADC channels are available for sampling external sources at
pins PTB0–PTB7, PTD0–PTD3, and ADC12/T2CLK. An analog
multiplexer allows the single ADC converter to select one of the 13 ADC
channels as ADC voltage input (ADCVIN). ADCVIN is converted by the
successive approximation register-based counters. The ADC resolution
is 8 bits. When the conversion is completed, ADC puts the result in the
ADC data register and sets a flag or generates an interrupt.
Figure 12-2
Reset:
Reset:
Reset:
Read:
Write:
Read:
Write:
Read:
Write:
Figure 12-1. ADC I/O Register Summary
Freescale Semiconductor, Inc.
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For More Information On This Product,
13 channels with multiplexed input
Linear successive approximation with monotonicity
8-bit resolution
Single or continuous conversion
Conversion complete flag or conversion complete interrupt
COCO
ADIV2
Bit 7
AD7
Analog-to-Digital Converter (ADC)
0
0
Go to: www.freescale.com
shows a block diagram of the ADC.
ADIV1
AIEN
AD6
6
0
0
ADCO
ADIV0
AD5
5
0
0
Indeterminate after reset
ADCH4
AD4
4
1
0
0
ADCH3
AD3
3
1
0
0
MC68HC908JL8
ADCH2
AD2
2
1
0
0
ADCH1
AD1
1
1
0
0
MOTOROLA
—
Rev. 2.0
ADCH0
Bit 0
AD0
1
0
0