saf-xc888cm-8ffi5v Infineon Technologies Corporation, saf-xc888cm-8ffi5v Datasheet - Page 106

• Manufacturer Part Number: saf-xc888cm-8ffi5v
• Description: 8-bit Single-chip Microcontroller
• Manufacturer: Infineon Technologies Corporation

3.21
The XC886/888 includes a high-performance 10-bit Analog-to-Digital Converter (ADC)
with eight multiplexed analog input channels. The ADC uses a successive approximation
technique to convert the analog voltage levels from up to eight different sources. The
analog input channels of the ADC are available at Port 2.
Features
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3.21.1
A common module clock
digital parts of the ADC module:
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The internal clock for the analog part
Therefore, the ADC clock prescaler must be programmed to a value that ensures
does not exceed 10 MHz. The prescaler ratio is selected by bit field CTC in register
Data Sheet
Successive approximation
8-bit or 10-bit resolution
(TUE of ± 1 LSB and ± 2 LSB, respectively)
Eight analog channels
Four independent result registers
Result data protection for slow CPU access
(wait-for-read mode)
Single conversion mode
Autoscan functionality
Limit checking for conversion results
Data reduction filter
(accumulation of up to 2 conversion results)
Two independent conversion request sources with programmable priority
Selectable conversion request trigger
Flexible interrupt generation with configurable service nodes
Programmable sample time
Programmable clock divider
Cancel/restart feature for running conversions
Integrated sample and hold circuitry
Compensation of offset errors
Low power modes
f
f
and the sample time). This clock is generated internally in the analog part, based on
the input clock
f
ADCA
ADCI
ADCD
is internal clock for the analog part (defines the time base for conversion length
is input clock for the analog part.
is input clock for the digital part.
Analog-to-Digital Converter
ADC Clocking Scheme
f
ADCA
to generate a correct duty cycle for the analog components.
f
ADC
generates the various clock signals used by the analog and
f
ADCI
is limited to a maximum frequency of 10 MHz.
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Functional Description
XC886/888CLM
V1.1, 2009-01
f
ADCI