R5F21133DFP RENESAS [Renesas Technology Corp], R5F21133DFP Datasheet - Page 190

• Manufacturer Part Number: R5F21133DFP
• Description: 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY/R8C/Tiny SERIES
• Manufacturer: RENESAS [Renesas Technology Corp]

R8C/13 Group
Rev.1.20
REJ09B0111-0120
Table 17.5 Status Register
• D
• The FMR07 bit (SR5) and FMR06 bit (SR4) are set to “0” by executing the Clear Status Register com-
• When the FMR07 bit (SR5) or FMR06 bit (SR4) = 1, the Program and Block Erase commands are not
mand.
accepted.
SR7 (D
SR6 (D
SR5 (D
SR4 (D
SR3 (D
SR2 (D
SR1 (D
SR0 (D
7
17.4.4 Status Register
register
Status
(1) When a given address in the user ROM area is read after writing the Read Status Register com-
(2) When a given address in the user ROM area is read after executing the Program or Block Erase
to D
The status register indicates the operating status of the flash memory and whether an erase or pro-
gramming operation terminated normally or in error. The status of the status register can be known by
reading the FMR00, FMR06, and FMR07 bits in the FMR0 register.
Table 17.5 lists the status register.
In EW0 mode, the status register can be read in the following cases:
• Sequence Status (SR7 and FMR00 Bits )
• Erase Status (SR5 and FMR07 Bits)
• Program Status (SR4 and FMR06 Bits)
Jan 27, 2006
The sequence status indicates the operating status of the flash memory. SR7 = 0 (busy) during auto
programming and auto erase, and is set to “1” (ready) at the same time the operation finishes.
Refer to Section 17.4.5, “Full Status Check.”
Refer to Section 17.4.5, “Full Status Check.”
bit
mand
command but before executing the Read Array command.
0
: Indicates the data bus which is read out when the Read Status Register command is executed.
7
6
5
4
3
2
1
0
)
)
)
)
)
)
)
)
register
FMR00
FMR07
FMR06
FMR0
bit
page 179 of 205
Program status
Reserved
Reserved
Reserved
Reserved
Reserved
Sequencer status
Erase status
Status name
Terminated normally
Terminated normally
Busy
"0"
-
-
-
-
-
Contents
Terminated in error
Terminated in error
Ready
"1"
-
-
-
-
-
17.4 CPU Rewrite Mode
Value
reset
after
1
0
0