Datasheet

Section 23 ROM
Rev. 3.00 Mar 21, 2006 page 610 of 788
REJ09B0300-0300
23.3.3 Block Configuration of 256-Kbyte Flash Memory
Figure 23.7 shows the block configuration of 256-kbyte flash memory. The thick lines indicate
erasing units, the narrow lines indicate programming units, and the values are addresses. The flash
memory is divided into 64 kbytes (3 blocks), 32 kbytes (1 block), and 4 kbytes (8 blocks). Erasing
is performed in these divided units. Programming is performed in 128-byte units starting from an
address whose lower bits are H'00 or H'80.
EB0
Erase unit: 4 kbytes
EB1
Erase unit: 4 kbytes
EB2
Erase unit: 4 kbytes
EB3
Erase unit: 4 kbytes
EB4
Erase unit: 32 kbytes
EB5
Erase unit: 4 kbytes
EB6
Erase unit: 4 kbytes
EB7
Erase unit: 4 kbytes
H'000000 H'000001 H'000002 H'00007F
H'000FFF
H'00107F
H'00207F
H'00307F
H'00407F
H'00BFFF
H'00C07F
H'00CFFF
H'001FFF
H'002FFF
H'003FFF
H'00D07F
H'00DFFF
H'00E07F
H'00EFFF
Programming unit: 128 bytes
Programming unit: 128 bytes
Programming unit: 128 bytes
Programming unit: 128 bytes
Programming unit: 128 bytes
Programming unit: 128 bytes
Programming unit: 128 bytes
Programming unit: 128 bytes
H'001000 H'001001 H'001002
H'002000 H'002001 H'002002
H'003000 H'003001 H'003002
H'004000 H'004001 H'004002
H'00C000 H'00C001 H'00C002
H'00D000 H'00D001 H'00D002
H'00E000 H'00E001 H'00E002
H'000F80 H'000F81 H'000F82
H'001F80 H'001F81 H'001F82
H'002F80 H'002F81 H'002F82
H'003F80 H'003F81 H'003F82
H'00BF80 H'00BF81 H'00BF82
H'00CF80 H'00CF81 H'00CF82
H'00DF80 H'00DF81 H'00DF82
H'00EF80 H'00EF81 H'00EF82
– – – – – – – – – – – – – –
– – – – – – – – – – – – – –
– – – – – – – – – – – – – –
– – – – – – – – – – – – – –
– – – – – – – – – – – – – –
– – – – – – – – – – – – – –
– – – – – – – – – – – – – –
– – – – – – – – – – – – – –
EB8
Erase unit: 4 kbytes
EB9
Erase unit: 64 kbytes
H'00F07F
H'00FFFF
H'01007F
H'01FFFF
Programming unit: 128 bytes
Programming unit: 128 bytes
H'00F000 H'00F001 H'00F002
H'010000 H'010001 H'010002
H'00FF80 H'00FF81 H'00FF82
H'01FF80 H'01FF81 H'01FF82
– – – – – – – – – – – – – –
– – – – – – – – – – – – – –
EB10
Erase unit: 64 kbytes
EB11
Erase unit: 64 kbytes
H'02007F
H'02FFFF
H'03007F
H'03FFFF
Programming unit: 128 bytes
Programming unit: 128 bytes
H'020000 H'020001 H'020002
H'030000 H'030001 H'030002
H'02FF80 H'02FF81 H'02FF82
H'03FF80 H'03FF81 H'03FF82
– – – – – – – – – – – – – –
– – – – – – – – – – – – – –
Figure 23.7 256-Kbyte Flash Memory Block Configuration