RL78 Family

EEPROM Emulation Library Pack02

R01US0068EJ0100

Rev.1.00

Page 5 of 53

Mar. 28, 2014

Contents

Chapter 1 Overview .....................................................................................................7

1.1

Outline ....................................................................................................................................... 7

1.2

Target Devices.......................................................................................................................... 7

1.3

Definition of Terms .................................................................................................................. 7

Chapter 2 EEPROM Emulation ...................................................................................9

2. 1 Specifications of EEPROM Emulation...................................................................................... 9

2. 2 Outline of Function ..................................................................................................................... 9

2. 3 EEL architecture ....................................................................................................................... 11

2. 3. 1 System Structure ........................................................................................................ 11

2. 3. 2 EEL Pool ...................................................................................................................... 11

2. 3. 3 Structure of EEL Block ............................................................................................... 13

2. 3. 4 EEL Block Header ....................................................................................................... 14

2. 3. 5 Structure of Stored Data ............................................................................................ 15

2. 3. 6 EEL Block Overview ................................................................................................... 16

Chapter 3 EEL Functional Specifications ................................................................17

3.1

EEL Functions / Commands of the EEL_Execute Function ..............................................17

3. 1. 1 EEL_CMD_STARTUP command [Startup processing] ...........................................17

3. 1. 2 EEL_CMD_SHUTDOWN command [Shutdown processing] ..................................17

3. 1. 3 EEL_CMD_REFRESH command [Refresh processing] ..........................................17

3. 1. 4 EEL_CMD_FORMAT command [Format processing] .............................................18

3. 1. 5 EEL_CMD_WRITE command [Write processing] ....................................................18

3. 1. 6 EEL_CMD_READ command [Read processing] ......................................................18

3. 1. 7 EEL_CMD_VERIFY command [Verify processing] ..................................................18

3.2

State Transitions .................................................................................................................... 19

3.3

Basic Flowchart...................................................................................................................... 21

3.4

Command Operation Flowchart ........................................................................................... 23

3.5

BGO（Back Ground Operation）function...........................................................................24

Chapter 4 Using EEPROM Emulation.......................................................................25

4.1

Caution Points ........................................................................................................................ 25

4.2

Number of stored user data items and total user data size...............................................27

4.3

Initial Values to be set by User ............................................................................................. 28

Chapter 5 User Interface ...........................................................................................31

5. 1 Request Structure (eel_request_t) Settings...........................................................................31

5.1.1

User Write Access...................................................................................................... 32

5.1.2

User Read Access ...................................................................................................... 32

5. 2 EEL Function Calls ................................................................................................................... 33

5. 3 Data Types................................................................................................................................. 33

5. 4 EEL Function............................................................................................................................. 34

FDL_Init ................................................................................................................................... 35

FDL_Open ............................................................................................................................... 36

FDL_Close............................................................................................................................... 37

EEL_Init ................................................................................................................................... 38