RX610 Group
26. ROM (Flash Memory for Code Storage)
R01UH0032EJ0120 Rev.1.20
Page 830 of 1006
Feb 20, 2013
26.2.6
Flash Status Register 1 (FSTATR1)
Address: 007F FFB1h
b7
b6
b5
b4
b3
b2
b1
b0
Value after reset:
0
0
0
0
0
0
x
x
FCUERR
—
—
FLOCKST
—
—
—
—
x: Undefined
Bit
Symbol
Bit Name
Description
R/W
b1, b0
Reserved
The read value is undefined and these bits cannot be modified.
R
b3, b2
Reserved
These bits are always read as 0 and cannot be modified.
R
b4
FLOCKST
Lock Bit Status
0: Protected
1: Not protected
R
b6, b5
Reserved
These bits are always read as 0 and cannot be modified.
R
b7
FCUERR
FCU Error
0: No error occurs in the FCU processing
1: An error occurs in the FCU processing
R
FSTATR1 is a register to check the FCU status.
When on-chip ROM is disabled, the data read from FSTATR1 is 00h.
FSTATR1 is initialized by a reset, or when the FRESET bit in FRESETR is set to 1.
FLOCKST Bit (Lock Bit Status)
This bit is to reflect the read data of a lock bit when using the lock bit read 2 command.
When the FRDY bit in FSTATR0 is set to 1 after a lock bit read 2 command is issued, valid data is stored in the
FLOCKST bit. The value of the FLOCKST bit is retained until the completion of the next lock bit read 2 command.
FCUERR Bit (FCU Error)
This bit is used to indicate that an error occurs in the FCU internal processing.
When the FCUERR bit is set to 1, set the FRESET bit in FRESETR to 1 to initialize the FCU. Additionally, recopy the
FCU firmware from the FCU firmware area to the FCU RAM area.