R01US0068EJ0100 Datasheet, PDF (51/56 Pages) Renesas Technology Corp – EEPROM Emulation Library

RL78 Family
EEPROM Emulation Library Pack02
Chapter 6 Software Resources and Processing Time
2: The RL78/G12, L12 and G1C product does not support the EEL
3: An area used as the working area by the EEL is called self-RAM in this manual and the release note. The
self-RAM requires no user setting because it is an area that is not mapped and automatically used at
execution of the EEL (previous data is discarded). When the EEL is not used, the self-RAM can be used as
a normal RAM space.
For the RL78 microcontroller with self-RAM, the chapter of "memory space" in the user's manual of the
RL78 microcontroller has a note on an area (self-RAM) whose usage is prohibited during self-programming.
If the above table does not include the target RL78 microcontroller, refer to the user's manual of the target
RL78 microcontroller.
4: The data buffer is used as the working area for EEL internal processing or the area where the data to be
set is allocated in the EEL_Execute function. The required size depends on the function to be used.
Table 6-4 Data Buffer Size Used by EEL Functions
Function Name
Bytes
Function Name
FDL_Init
FDL_Open
FDL_Close
0
EEL_Close
0
EEL_Execute ^Note
0
EEL_Handler ^Note
EEL_Init
0
EEL_GetSpace
EEL_Open
0
EEL_GetVersionString
Note: An additional 5-byte area is used by the request structure.
Bytes
0
0 to 255
0 to 255
2
0
Figure 6-2 Arrangement Example of Self-RAM and Addresses FFE20H to FFEFFH
(RL78/G13: product with 4-Kbyte RAM and 64-Kbyte ROM)
R01US0068EJ0100 Rev.1.00
Mar. 28, 2014
Page 51 of 53