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M30870T-EPB User’s Manual 4. Hardware Specifications
REJ10J0482-0300 Rev.3.00 February 16, 2006
IMPORTANT
Note on Protect Resistor:
A protect is not canceled when protect register bit 2 (PRC2), which enables writing in the port P9 direction
register and the function select register A3, is changed with the below procedure.
(1) Step execution of an instruction setting ("1") PRC2
(2) Setting a break point from an instruction setting ("1") PRC2 to where the port P9 direction register or the
function select register A3 is set
(3) Setting ("1") PRC2 from the dump window or script window during user program execution
Note on Memory Access:
When setting memory expansion mode as a processor mode, it may be changed to memory expansion mode
temporarily before the user program itself changes from single-chip mode to memory expansion mode.
Take due consideration on this phenomenon in the following cases:
(1) Immediately before executing the program after setting a software break
(2) Immediately after stopping the program when a software break is set
Notes on MCU File:
Two types of MCU file are available for when using this product with the M32C PC7501 Emulator Debugger.
Please use one of them as occasion demands.
(1) Using the MCU file "m30870.mcu"
When selecting AN00-AN07 or AN20-AN27 for analog input port select bits (bit2 and bit1 of 0394h), port
P15 can be used as an I/O port and intelligent I/O pin. However, external trigger mode (ADtrg and three-phase
timer B2) cannot be used. When using the "m30870.mcu ", set all the SW5 switches of the M30870T-EPBM
to "OFF".
(2) Using the MCU file "m30870_ad.mcu"
For external trigger mode, use the "m30870_ad.mcu".
In this case, set analog input port select bits (bit2 and bit1 of 0394h) as follows.
- To select AN0-AN7 or AN150-AN157 for analog input port select bits:
Set all the SW5 switches of the M30870T-EPBM to "ON".
- To select AN00-AN07 or AN20-AN27 for analog input port select bits:
Setting the SW5 switches of the M30870T-EPBM enables to set analog input pin by each individual pin.
Set the pins used for the A/D conversion to ON and the pins not used to OFF.
Port P15 corresponding to a selected bit needs to be set to "input".
Two types of MCU file (m30870_a.mcu and m30870_ad_a.mcu) are available for when using this product with
the M3T-PD308F, the notes are the same as above.
Note on Intelligent I/O Resistor Access:
If using a CPU clock of more than 24MHz, set the SFR area of the intelligent I/O function to 2-wait (set the
PM13 bit to "1") when reading this area. This precaution only needs to be observed when using an emulator,
and does not apply for the actual MCU.
Note on Voltage Detect Circuit:
As the power voltage cannot be changed after powering on the user system, the voltage detect circuit (voltage
down detect interrupt and hardware reset 2) cannot be used with this product.
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