HD64F3437TFI16V Renesas Electronics America, HD64F3437TFI16V Datasheet - Page 448

• Manufacturer Part Number: HD64F3437TFI16V
• Description: MCU FLASH 60K 100-TQFP
• Manufacturer: Renesas Electronics America

Specifications of HD64F3437TFI16V

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Example of Emulation of Real-Time Flash-Memory Update
416
Procedure
1. Overlap part of RAM (H'FC80 to H'FCFF) onto the area requiring real-time update (SB1).
2. Perform real-time updates in the overlapping RAM.
3. After finalization of the update data, clear the RAM overlap (by clearing the RAMS and
4. Read the data written in RAM addresses H'FC80 to H'FCFF out externally, then program
(Set WSCR bits 7 and 6 to 01.)
RAM0 bits).
the flash memory area, using this data as part of the program data.
Small-block
area (SB1)
Figure 19.12 Example of RAM Overlap
H'0000
H'007F
H'0080
H'00FF
H'0100
H'7FFF
Overlapped
RAM
address space
Flash memory
H'FB80
H'FC80
H'FCFF
H'FF7F
Overlapped RAM
RAM area
On-chip