HD64F7047F50 Renesas Electronics America, HD64F7047F50 Datasheet - Page 605

• Manufacturer Part Number: HD64F7047F50
• Description: IC SUPERH MCU FLASH 256K 100QFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7047r

Specifications of HD64F7047F50

• Core Processor: SH-2
• Core Size: 32-Bit
• Speed: 50MHz
• Connectivity: CAN, SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 53
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 12K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 16x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

19.7
A setting in the RAM emulation register (RAMER) enables part of RAM to overlap with the flash
memory area so that data to be written to flash memory can be emulated in RAM in real time.
Emulation can be performed in user mode or user program mode. Figure 19.7 shows an example
of emulation of real-time flash memory programming.
1. Set RAMER to overlap part of RAM with the area for which real-time programming is
2. Emulation is performed using the overlapped RAM.
3. After the program data has been confirmed, the RAMS bit is cleared, thus releasing the RAM
4. The data written in the overlapped RAM is written into the flash memory area.
required.
overlap.
Flash Memory Emulation in RAM
Figure 19.7 Flowchart for Flash Memory Emulation in RAM
No
Execute application program
Start of emulation program
End of emulation program
Write to flash memory
Write tuning data to
overlapped RAM
emulation block
Clear RAMER
Set RAMER
Tuning OK?
Yes
Rev. 2.00, 09/04, page 563 of 720