R0E5212BACPE00 Renesas Electronics America, R0E5212BACPE00 Datasheet - Page 26

• Manufacturer Part Number: R0E5212BACPE00
• Description: EMULATOR COMPACT/CONV BRD R8C/2B
• Manufacturer: Renesas Electronics America
• Type: In Circuit Debuggerr

Specifications of R0E5212BACPE00

• Contents: Compact Emulator, IDE, Assembler and Linker
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: R8C/2A, R8C/2B
• Lead Free Status / RoHS Status: Supplier Unconfirmed, Contains lead / RoHS non-compliant

R0E521000CPE00 User’s Manual
2.3.3 Setting the POWER Selection Jumper
The POWER select jumper needs to be set depending on the user system’s power supply voltage and power supply condition.
If the system is used with power supply voltages in the range 2.7 to 5.5 [V], leave the POWER select jumper as set to the INT
side, which is the default setting. If the system is used with power supply voltages less than 2.7 [V], change the POWER select
jumper’s setting to the EXT side. If the board is used with its POWER select jumper switched to the EXT side, always make
sure a user system is connected to the board, and that the MCU power supply source selection jumper is set to the EXT side.
Table 2.3 shows the POWER selection jumper switch settings.
Table 2.3 Setting jumper switches on the R0E521000EPBM0
When the POWER selection jumper is changed to the EXT side, following operations can be performed from the debugger
while the user system’s power supply is turned off:
(1) Starting up the debugger while the user system’s power supply is turned off, as well as downloading a program and
(2) Starting program execution (by causing the program to run from an idle state, with the MCU in a reset state) while the user
Furthermore, if the CPU clock is supplied by an on-chip oscillator, the following user system power on/off operations can also
be performed:
(3) Turning the user system’s power supply off during program execution and stopping the user program (by causing the
(4) Turning the user system’s power supply on or off while the user program is running or idle
REJ10J0845-0600 Rev.6.00 Aug. 20, 2009
Page 24 of 92
Note on Setting the POWER Selection Jumper:
Notes on the EXT Setting of the POWER Selection Jumper:
Switch No.
referencing or altering memory contents
system’s power supply is turned off, and then executing the program from a reset vector read phase when the user system is
powered up.
program to stop from the RUN state) while the power supply is turned off (the MCU in a reset state)
Note, however, that since the reset pin is controlled from the emulator side, the high-going transitions of the VCC and
RESET pins for user system power-on occur with different timing, the power-on reset function of the MCU cannot be
debugged.
JP1
The user system’s power supply can be turned on/off only when the POWER selection jumper is set to the EXT
side. If an attempt is made to turn the user system’s power supply on or off while the jumper is set to the INT
side, the internal circuit of the emulator or the user system may break down. Therefore, such an operation is
strictly prohibited.
With this product, the MCU’s power-on reset function for user system power-on cannot be emulated.
The user system’s power supply can be turned on/off only when the system is operating with an on-chip
oscillator, and cannot be turned on or off when operating with XIN or XCIN.
Switch name
POWER
selection
jumper
(Factory-setting)
INT
INT
How to set
EXT
EXT
IMPORTANT
CAUTION
When using this system with power supply voltages in the range 2.7
to 5.5 V.
Set the jumper to this position when the user system’s power supply
voltage is less than 2.7 [V] and the user system’s power supply is to
be turned on/off.
(Also be sure to set the MCU power supply source selection jumper
to the EXT side.)
Description
2. Setup