V850FX3-CANIT NEC, V850FX3-CANIT Datasheet - Page 71

• Manufacturer Part Number: V850FX3-CANIT
• Description: STARTER KIT, 32BIT, CAN
• Manufacturer: NEC

Specifications of V850FX3-CANIT

• Svhc: No SVHC (18-Jun-2010)
• Development Tool Type: Starter Kit
• Kit Features: Easy To Use Device Demonstration Capabilities, TK-V850 Debugging, N-Wire Debugging
• Mcu Supported Families: V850ES/Fx3
• Silicon Manufacturer: NEC
• Core Architecture: RISC
• Kit Contents: Board
• Features: N-Wire Debugging, Character LCD Module, USB Interface

V850ES/Fx3 – CAN it!
12.1.3 Reset vector
When a user program is downloaded by using the IAR C-SPY debugger, the reset vector (address 0x0000)
of the user program is replaced by the one of monitor program. The debugger moves the reset vector of the
user program automatically to address 0x0004. The correction of the relative jump address is also done
automatically by the debugger.
Example:
12.1.4 Memory area
The monitor program is located in the highest FLASH block of the V850ES/FG3 device. Only 2 kByte of
memory are allocated by the monitor program.
Moreover, the monitor reserves 10 bytes of the global stack area by halting the user program, caused by a
forcible break (debugger stop command) or a software breakpoint.
12.1.5 Clock operation
After releasing a reset, the monitor program sets the operation clock of the CPU to the maximum speed of
32 MHz. The monitor program switches also to the maximum CPU speed of 32 MHz when releasing a
forcible break (debugger stop command) or when the user program execution is stopped caused by a
software breakpoint. After the user program execution is restarted (debugger go command) the monitor
restores the previous CPU operation clock setting.
Note:
12.1.6 Other limitations
The watchdog timer can not be used. Please be sure to set the option bytes of the V850ES/FG3 device
accordingly to allow the watchdog timer disable.
The forcible break (debugger stop command) can not be used when the global interrupts were disabled by
the user program (DI instruction).
0x0000
0x0006
0x0008
Device
V850ES/FG3 (µPD70F3377)
Do not change the frequency of the external oscillator connected to the X1 and X2 pins.
The baud rate calculation for UARTD0 is based on a 4 MHz input frequency, otherwise no
communication to the V850ES/Fx3 – CAN it! starterkit can be established.
MOV
JMP
_start, R31
R31
User’s Manual U18560EE1V0UM00
Address range
0x0007F800 - 0x0007FFFF
0x0000
0x0004
0x000A
Function
Reserved for monitor
program
JR monitor
MOV
JMP
_start, R31
R31
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