UPSD3422_06 Datasheet, PDF (174/293 Pages) STMicroelectronics – Turbo Plus Series Fast Turbo 8032 MCU with USB and Programmable Logic

Analog-to-digital convertor (ADC)
uPSD34xx
Table 90. ADCPS register details (SFR 94h, Reset Value 00h)
Bit
Symbol
Function
7:4
–
Reserved
ADC Conversion Reference Clock Enable
3
ADCCE
0 = ADC reference clock is disabled (default)
1 = ADC reference clock is enabled
ADC Reference Clock PreScaler
Only three Prescaler values are allowed:
ADCPS[2:0] = 0, for f_OSC frequency 16MHz or less. Resulting ADC clock is
2:0 ADCPS[2:0] _fOSC.
ADCPS[2:0] = 1, for f_OSC frequency 32MHz or less. Resulting ADC clock is
f_OSC/2.
ADCPS[2:0] = 2, for f_OSC frequency 32MHz > 40MHz. Resulting ADC clock
is f_OSC/4.
Table 91.
Bit
7:0
ADAT0 register (SFR 95h, reset value 00h)
Symbol
Function
–
Store ADC output, Bit 7 - 0
Table 92.
Bit
7:2
1.. 0
ADAT1 register (SFR 96h, reset value 00h)
Symbol
Function
–
Reserved
–
Store ADC output, Bit 9, 8
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