R8C/34C Group

4. Special Function Registers (SFRs)

R01DS0007EJ0100 Rev 1.00

Page 26 of 54

Aug. 24, 2010

Table 4.12

SFR Information (12) (1)

X: Undefined

Note:

1.

The blank areas are reserved and cannot be accessed by users.

Table 4.13

ID Code Areas and Option Function Select Area

Notes:

1.

The option function select area is allocated in the flash memory, not in the SFRs. Set appropriate values as ROM data by a program.

Do not write additions to the option function select area. If the block including the option function select area is erased, the option function select

area is set to FFh.

When blank products are shipped, the option function select area is set to FFh. It is set to the written value after written by the user.

When factory-programming products are shipped, the value of the option function select area is the value programmed by the user.

2.

The ID code areas are allocated in the flash memory, not in the SFRs. Set appropriate values as ROM data by a program.

Do not write additions to the ID code areas. If the block including the ID code areas is erased, the ID code areas are set to FFh.

When blank products are shipped, the ID code areas are set to FFh. They are set to the written value after written by the user.

When factory-programming products are shipped, the value of the ID code areas is the value programmed by the user.

Address

Register

Symbol

After Reset

2CF0h

DTC Control Data 22

DTCD22

XXh

2CF1h

XXh

2CF2h

XXh

2CF3h

XXh

2CF4h

XXh

2CF5h

XXh

2CF6h

XXh

2CF7h

XXh

2CF8h

DTC Control Data 23

DTCD23

XXh

2CF9h

XXh

2CFAh

XXh

2CFBh

XXh

2CFCh

XXh

2CFDh

XXh

2CFEh

XXh

2CFFh

XXh

2D00h

:

2FFFh

Address

Area Name

Symbol

After Reset

:

FFDBh

Option Function Select Register 2

OFS2

(Note 1)

:

FFDFh

ID1

(Note 2)

:

FFE3h

ID2

(Note 2)

:

FFEBh

ID3

(Note 2)

:

FFEFh

ID4

(Note 2)

:

FFF3h

ID5

(Note 2)

:

FFF7h

ID6

(Note 2)

:

FFFBh

ID7

(Note 2)

:

FFFFh

Option Function Select Register

OFS

(Note 1)