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M30850T2-EPB User’s Manual 4. Hardware Specifications
REJ10J1005-0200 Rev.2.00 April 1, 2007
IMPORTANT
Notes on A/D Conversion:
z When setting the register below to use the analog input port selection function, you need to set the direction
register of port P15 for a pin that performs A/D conversion to "input".
And you need to set the function selection register of port P15 for a pin that performs A/D conversion to "I/O
port".
A/D0 control register 2 (address 394h)
b2, b1
1, 0 : AN00 to AN07
1, 0 : AN20 to AN27
Also, when the P0 and P2 groups are selected for A/D input, port P15 cannot be used as an I/O port. When
setting the register above, port P15 cannot be used as an I/O port even if A/D conversion is halting.
For the switch SW5, refer to "2.10.1 Setting Switches of Emulation Probe" (page 38).
z When setting the register below to use multi-port sweep mode, you need to set the direction register of port P15
for a pin that performs A/D conversion to "input".
And you need to set the function selection register of port P15 for a pin that performs A/D conversion to "I/O
port".
A/D0 control register 4 (address 392h)
b3, b2
1, 0 : AN0 to AN7, AN00 to AN07
1, 0 : AN0 to AN7, AN20 to AN27
Also, when the P0 and P2 groups are used for multi-port sweep mode, port P15 cannot be used as an I/O port.
When setting the register above, port P15 cannot be used as an I/O port even if A/D conversion is halting.
z Because a converter board and other devices are used between the evaluation MCU and the user system, the
A/D converter operates differently from an actual MCU. Make the final evaluation of the A/D converter using
an actual MCU.
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