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CHAPTER 18 8-/10-BIT A/D CONVERTER
Table 18.3-2 Function of Each Bit of A/D Control Status Register (High) (ADCS1) (1/2)
Bit name Function
bit15 BUSY:
A/D conversion-on
flag bit
This bit forcibly terminates the 8-/10-bit A/D converter. When read, this
bit indicates whether the 8-/10-bit A/D converter is operating or
stopped.
When set to "0": Forcibly terminates 8-/10-bit A/D converter
When set to "1": No effect
Read: 1 is read when the 8-/10-bit A/D converter is operating and 0 is
read when the converter is stopped.
Note:
• "1" is read from this bit when an read-modify-write instruction is
used.
• In the single-shot mode, this bit is cleared when A/D conversion
ends.
• In the continuous or pause mode, the A/D conversion does not
stop until writing "0" to this bit.
• Do not perform the forced stop (BUSY=0) and the activation of
the A/D converter concurrently (using software (STRT=1), exter-
nal trigger, or timer).
bit14 INT:
Interrupt request flag
bit
This bit indicates that an interrupt request is generated.
• When A/D conversion is terminated and its results are stored in the
A/D data register (ADCR0, 1), the INT bit is set to "1".
• When the interrupt request flag bit is set (INT = 1) with an interrupt
request enabled (INTE = 1), an interrupt request is generated.
When set to "0": Cleared
When set to "1": No effect
When EI
2
OS function started: Cleared
Note:
• "1" is read from this bit when an read-modify-write instruction is
used.
• To clear the INT bit, write 0 when the 8-/10-bit A/D converter is
stopped.
bit13 INTE:
Interrupt request
enable bit
This bit enables or disables output of an interrupt request.
• When the interrupt request flag bit is set (INT =1) with an interrupt
request enabled (INTE = 1), an interrupt request is generated.
Note:
Always set this bit to 1 when the EI
2
OS function is used.