Rainbow Electronics T89C51CC02 - Manual (Page 117)

Rev.A - May 17, 2001 117
Preliminary
T89C51CC02
17.6. Clock Selection
The maximum clock frequency for ADC is 700KHz. A prescaler is featured (ADCCLK) to generate the ADC
clock from the oscillator frequency.
Figure 119. A/D Converter clock
17.7. ADC Standby Mode
When the ADC is not used, it is possible to set it in standby mode by clearing bit ADEN in ADCON register.
In this mode the power dissipation is about 1uW.
Prescaler ADCLK
A/D
Converter
conversion clock f
ADC
CPU
CLOCK
CPU Core Clock Symbol
ч
2