saf-xc866-4rri3v Infineon Technologies Corporation, saf-xc866-4rri3v Datasheet - Page 85

• Manufacturer Part Number: saf-xc866-4rri3v
• Description: 8-bit Single-chip Microcontroller
• Manufacturer: Infineon Technologies Corporation

3.18.1
A common module clock f
and digital parts of the ADC module:
• f
• f
• f
The internal clock for the analog part f
Therefore, the ADC clock prescaler must be programmed to a value that ensures f
does not exceed 10 MHz. The prescaler ratio is selected by bit field CTC in register
GLOBCTR. A prescaling ratio of 32 can be selected when the maximum performance of
the ADC is not required.
Figure 33
Data Sheet
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.
ADC Clocking Scheme
ADC Clocking Scheme
f
ADC
ADCA
= f
PCLK
f
ADCA
to generate a correct duty cycle for the analog components.
ADC
Condition: f
generates the various clock signals used by the analog
clock prescaler
÷
÷
÷
÷
ADCI
32
4
3
2
ADCI
f
MUX
CTC
is limited to a maximum frequency of 10 MHz.
ADCD
81
≤
10 MHz, where t
f
ADCI
components
interrupts
registers
analog
arbiter
analog part
digital part
ADCI =
Functional Description
f
ADCI
1
V1.2, 2007-10
XC866
ADCI