R28 datasheet(368/473 Pages) RENESAS

368 / 473 page

R8C/28 Group, R8C/29 Group

19. Flash Memory

Rev.2.10

Sep 26, 2008

Page 349 of 441

REJ09B0279-0210

Figure 19.5

FMR0 Register

Flash Memory Control Register 0

Symbol

Address

After Reset

FMR0

01B7h

00000001b

Bit Symbol

Bit Name

Function

RY/BY

___

status flag

NOTES:

This bit is set to 0 by executing the clear status command.

This bit is enabled w hen the FMR01 bit is set to 1 (CPU rew rite mode enabled). When the FMR01 bit is set to 0,

w riting 1 to the FMSTP bit causes the FMSTP bit to be set to 1. The flash memory does not enter low -pow er

consumption state nor is it reset.

FMR06

To set this bit to 1, set it to 1 immediately after setting it first to 0. Do not generate an interrupt betw een setting the bit

to 0 and setting it to 1. Enter read array mode and set this bit to 0.

Set this bit to 1 immediately after setting it first to 0 w hile the FMR01 bit is set to 1.

Do not generate an interrupt betw een setting the bit to 0 and setting it to 1.

Set this bit by a program transferred to the RAM.

Program status flag(4)

0 : Completed successfully

1 : Terminated by error

Erase status flag(4)

0 : Completed successfully

1 : Terminated by error

Reserved bits

Set to 0.

FMR02

—

(b5-b4)

FMR00

FMSTP

b7 b6 b5 b4

0 : Enables flash memory operation

1 : Stops flash memory

(enters low -pow er consumption state

and flash memory is reset)

FMR01

Block 0, 1 rew rite enable bit(2, 6)

0 : Busy (w riting or erasing in progress)

1 : Ready

CPU rew rite mode select bit(1)

0 : CPU rew rite mode disabled

1 : CPU rew rite mode enabled

When setting the FMR01 bit to 0 (CPU rew rite mode disabled), the FMR02 bit is set to 0 (disables rew rite).

FMR07

b3 b2 b1 b0

0 : Disables rew rite

1 : Enables rew rite

Flash memory stop bit(3, 5)

R28 Datasheet(PDF) 368 Page - Renesas Technology Corp

R28 Datasheet(HTML) 368 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL