NEC V850E/CA2 JUPITER Preliminary User's Manual page 525

(6) A/D conversion result register (ADCR/ADCRL/ADCRH)
The ADCR register is an 16-bit register that holds all 10 bits of an A/D conversion result. ADCRL is
an 8-bit register that holds the lower 2 bits of an A/D conversion result. ADCRH is an 8-bit register
that holds the higher 8 bits of an A/D conversion result. Whenever an A/D conversion terminates,
the conversion result from the successive approximation register (SAR) is loaded. RESET input
sets these to 0000H.
(7) Controller
The controller selects an analog input, generates sample and hold circuit operation timing,
controls the conversion trigger, specifies the conversion operation time.
(8) ANIm pins (m = 0 to 11)
The ANIm pins are the 12-channel analog input pins to analog converter.
(9) AV pin
REF
The AV pin is used to input reference voltage to the A/D converter. A signal input to the ANIm
REF
pin is converted to a digital signal based on the voltage applied between AV
(m = 0 to 11). If not using the AV
(10) AV pin
SS
The AV pin is the ground voltage pin of the A/D converter. Even if not using A/D converter,
SS
always ensure that this pin has the same DC potential as the V
(11) AV pin
DD
The AV pin is the analog power supply pin of A/D converter. Even if not using A/D converter,
DD
always ensure that this pin has the same potential as the V
Note: When connecting the AV
Caution: Use input voltages to ANIm that are within the range of the ratings. In particular, if a
voltage higher than AV
maximum ratings) is input, the conversion value of that channel is undefined, and the
conversion values of other channels also may be affected.
Chapter 15 A/D Converter
pin, connect it to AV
REF
pin to AV
REF
or lower than AV
DD
Preliminary User's Manual U15839EE1V0UM00
or AV
DD
DD5
the power consumption will be reduced.
SS
(even one within the range of absolute
SS
and AV
REF
Note
.
SS
pin.
SS5
pin.
SS
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