参数资料
型号: SAF-XC888C-8FFA3V3
厂商: INFINEON TECHNOLOGIES AG
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 24 MHz, MICROCONTROLLER, PQFP64
封装: PLASTIC, TQFP-64
文件页数: 10/144页
文件大小: 1455K
代理商: SAF-XC888C-8FFA3V3
XC886/888CLM
Functional Description
Data Sheet
100
V1.2, 2009-07
GLOBCTR. A prescaling ratio of 32 can be selected when the maximum performance of
the ADC is not required.
Figure 35
ADC Clocking Scheme
For module clock
f
ADC = 24 MHz, the analog clock fADCI frequency can be selected as
shown in Table 34.
As
f
ADCI cannot exceed 10 MHz, bit field CTC should not be set to 00B when fADC is
24 MHz. During slow-down mode where
f
ADC may be reduced to 12 MHz, 6 MHz etc.,
CTC can be set to 00B as long as the divided analog clock fADCI does not exceed 10 MHz.
Table 34
f
ADCI Frequency Selection
Module Clock
f
ADC
CTC
Prescaling Ratio
Analog Clock
f
ADCI
24 MHz
00B
÷ 2
12 MHz (N.A)
01B
÷3
8MHz
10B
÷4
6MHz
11B (default)
÷ 32
750 kHz
analog
components
f
ADCI
f
ADC = fPCLK
MUX
arbiter
registers
interrupts
analog part
digital part
f
ADCD
f
ADCA
32
÷
4
÷
3
÷
clock prescaler
CTC
Condition: f
ADCI
10 MHz, where t
ADCI = f
ADCI
1
2
÷
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