Fujitsu F2MC-8FX Hardware Manual page 435

Table 23.4-2 Functions of Bits in A/D Control Register 2 (ADC2)
Bit name
AD8:
bit7
Precision select bit
TIM1, TIM0:
bit6
Sampling time select
bit5
bits
ADCK:
bit4 External start signal
select bit
ADIE:
bit3 Interrupt request
enable bit
EXT:
bit2 Continuous activation
enable bit
CKDIV1,
bit1
CKDIV0:
bit0
Clock select bits
This bit selects the resolution of A/D conversion.
When set to "0": The bit selects 10-bit precision.
When set to "1": The bit selects 8-bit precision, in which case eight bits of data can be read from
the ADDL register.
Note: The data bits used are different depending on the resolution.
Update this bit only with A/D operation stopped before starting conversion.
Set the sampling time.
• Change this sampling time setting depending on the operating conditions (voltage and frequency).
• The CKIN value is determined by the clock select bits (ADC2:CKDIV1, DKDIV0).
Note: Update this bit only with A/D operation stopped.
Selects the start signal for external start (ADC2:EXT = 1).
Enables or disables output of interrupts to the interrupt controller.
• Interrupt requests are output with both of this bit and the interrupt request flag bit (ADC1: ADI) set
to "1".
• Selects whether to activate the A/D conversion function via software, or continuously upon
detection of the rise of the input clock signal.
Select the clock to use for A/D conversion. The input clock is generated by the prescaler. See
"CHAPTER 6 CLOCK CONTROLLER" for details.
• The sampling time can also be changed via this clock selection.
• Change this setting depending on the operating conditions (voltage and frequency).
Note: Update this bit only with A/D operation stopped.
CHAPTER 23 10-BIT A/D CONVERTER
Function
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