Important – Renesas Emulation Probe for M32C/88 Group M30880T-EPB User Manual

Page 91

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M30880T-EPB User’s Manual

4. Hardware Specifications

REJ10J0497-0100Z Rev.1.00 January 16, 2005

Page 91 of 100

IMPORTANT

Notes on A/D Conversion:

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).

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.

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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