RG14 datasheet(10/56 Pages) RENESAS

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RL78 Family

Chapter 2

EEPROM Emulation

EEPROM Emulation Library Pack02

R01US0068EJ0100

Rev.1.00

Page 10 of 53

Mar. 28, 2014

Item

EEL Pack01

EEL

User data length

1 to 255

Amount of stored user data Note 1

1 to 255

1 to 64

Data ID range

1 to 255

1 to 64

Number of EEPROM emulation blocks Note 2

4 to 255

3 to 255

Recommended user data size Note 1

980 x total number of blocks

x 1/4 - 980/2 bytes

1014/2 bytes

Enforce mode and TimeOut mode

Supported

Not supported

Back ground maintenance processing

Supported

Not supported

Data ID number

Can be set arbitrarily

Cannot be set arbitrarily

Auto-checksum for data

Supported

Not supported

Note1: The total size of user data must be within 1/2 of each block when all user data are written to an EEL

block. Therefore, the range used for the number of stored user data items differs depending on the size

of the stored user data. It is also necessary to consider the size of the reference data provided for each

data item for management use when determining the total size. For details about the number of stored

user data items and total size, see 4.2 Number of stored user data items and total user data size.

Note 2: EEL blocks cannot be set more than maximum number of blocks of on-board data flash memory.

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