NEC V850E/MS1 UPD703100 User Manual page 325

• • • • 1-trigger mode
Mode that uses one match interrupt from timer 11 as the A/D conversion start timing.
• • • • 4-trigger mode
Mode that uses four match interrupts from timer 11 as the A/D conversion start timing.
(c) External trigger mode
Mode that specifies the conversion timing of the analog input to the ANI0 to ANI3 pins using the ADTRG
pin. This mode can be specified only with ANI0 to ANI3 pins.
(2) Operation mode
There are two types of operation modes that set the ANI0 to ANI7 pins: select mode and scan mode. The
select mode has sub-modes including the 1-buffer mode and 4-buffer mode. These modes are set by the
ADM0 register.
(a) Select mode
One analog input specified by the ADM0 register is A/D converted. The conversion results are stored in
the ADCRn register corresponding to the analog input (ANIn). For this mode, the 1-buffer mode and 4-
buffer mode are provided for storing the A/D conversion results (n = 0 to 7).
• 1-buffer mode
One analog input specified by the ADM0 register is A/D converted. The conversion results are stored
in the ADCRn register corresponding to the analog input (ANIn). The ANIn and ADCRn registers
correspond one to one, and an A/D conversion end interrupt (INTAD) is generated each time one A/D
conversion ends.
CHAPTER 11 A/D CONVERTER
User's Manual U12688EJ4V0UM00
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