Status Register - Renesas M16C/64C User Manual

M16C/64C Group
30.8.7

Status Register

The status register indicates flash memory operating state and whether or not an erase or program
operation has been completed as expected.
Bits FMR00, FMR06, and FMR07 in the FMR0 register indicate status register states. Refer to 30.3.1
"Flash Memory Control Register 0 (FMR0)" for a description of each bit.
Table 30.17 Difference in Reading of Status Register
Item FMR0 register
Condition No limit
Reading Read bits FMR00, FMR06,
procedure and FMR07 in the FMR0
register
Table 30.18 Status Register
Bits in Status Bit in FMR0
Register Register
SR0 (D0)
SR1 (D1)
SR2 (D2)
SR3 (D3)
SR4 (D4) FMR06
SR5 (D5) FMR07
SR6 (D6)
SR7 (D7) FMR00
D0 to D7: The data buses read when the read status register command is executed.
R01UH0092EJ0110 Rev.1.10
Jul 31, 2012
Status
- Reserved
- Reserved
- Reserved
- Reserved
Program status
Erase status
- Reserved
Sequencer status
Command
• Read any even address in program ROM 1, program
ROM 2, or data flash after writing the read status register
command.
• Read any even address in program ROM 1, program
ROM 2, or data flash after executing the program
command, block erase command, lock bit program
command, or block blank check command before
executing the read array command.
Status
0
-
-
-
-
Completed as
expected
Completed as
expected
-
Busy
30. Flash Memory
Reset Value
1
-
-
-
-
Completed in error
Completed in error
-
Ready
Page 696 of 807
-
-
-
-
0
0
-
1