UPD70F3451GC-UBT-A Renesas Electronics America, UPD70F3451GC-UBT-A Datasheet - Page 1067

• Manufacturer Part Number: UPD70F3451GC-UBT-A
• Description: MCU 32BIT 128KB FLASH 80LQFP
• Manufacturer: Renesas Electronics America
• Series: V850E/Ix3r

Specifications of UPD70F3451GC-UBT-A

• Core Processor: RISC
• Core Size: 32-Bit
• Speed: 64MHz
• Connectivity: CSI, I²C, UART/USART
• Peripherals: DMA, LVD, PWM, WDT
• Number Of I /o: 44
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 3.5 V ~ 5.5 V
• Data Converters: A/D 10x12b, 4x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

(3) Securement of area for debug monitor program
The shaded portions in Figure 26-5 are the areas where the debug monitor program is allocated. The monitor
program performs initialization processing for debug communication interface and RUN or break processing for
the CPU. The internal ROM area must be filled with 0xFF. This area must not be rewritten by the user
program.
[How to secure areas]
It is not necessarily required to secure this area if the user program does not use this area.
To avoid problems that may occur during the debugger startup, however, it is recommended to secure this
area in advance, using the compiler.
The following shows examples for securing the area, using the NEC Electronics compiler CA850. Add the
assemble source file and link directive code, as shown below.
• Assemble source (Add the following code as an assemble source file.)
• Link directive (Add the following code to the link directive file.)
-- Secures 2 KB space for monitor ROM section
.section "MonitorROM", const
.space
-- Secures interrupt vector for debugging
.section "DBG0"
.space
-- Secures interrupt vector for serial communication
-- Change the section name according to the serial communication mode used
.section "INTCB0RE"
.space
.section "INTCB0R"
.space
.section "INTCB0T"
.space
-- Secures 16-byte space for monitor RAM section
.section "MonitorRAM", bss
.lcomm
MROMSEG
};
MRAMSEG
};
The following shows an example when the internal ROM has 256 KB (end address is 003FFFFH) and
internal RAM has 12 KB (end address is 3FFEFFFH).
0x800, 0xff
4, 0xff
4, 0xff
4, 0xff
4, 0xff
monitorramsym, 16, 4;
: !LOAD ?R V0x03f800{
MonitorROM
: !LOAD ?RW V0x03ffeff0{
MonitorRAM
CHAPTER 26 ON-CHIP DEBUG FUNCTION
= $PROGBITS
= $NOBITS
User’s Manual U18279EJ3V0UD
-- defines symbol monitorramsym
?A MonitorROM;
?AW MonitorRAM;
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