m37905 Renesas Electronics Corporation., m37905 Datasheet - Page 415
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m37905
Manufacturer Part Number
m37905
Description
Mitsubishi 16-bit Single-chip Microcomputer 7700 Family / 7900 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.M37905.pdf
(565 pages)
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FLASH MEMORY VERSION
19.2 Flash memory CPU reprogramming mode
19-12
Table 19.2.2 Bit definition of status register
Data bus: Indicates the data bus to be read out when the read status register command has been executed.
SR.0 (D
SR.1 (D
SR.2 (D
SR.3 (D
SR.4 (D
SR.5 (D
SR.6 (D
SR.7 (D
19.2.2 Status register
The programming and erase operations for the internal flash memory are controlled by the sequencer in
the internal flash memory. The status register indicates the completion states (normal or abnormal) of the
programming and erase operations. For details of abnormal endings (errors), refer to section “19.2.5 Full
status check.”
Table 19.2.2 lists the bit definition of the status register.
The contents of the status register can be read out by the read status register command. (Refer to section
“19.2.4 Software commands.”)
(Data bus)
(1) Programming status bit (SR.4)
(2) Erase status bit (SR.5)
Symbol
This bit is set to “1” if a programming error has occurred during the automatic programming (the
programming) operation and cleared to “0” by executing the clear status register command. This bit
is also cleared to “0” at reset.
This bit is set to “1” if an erase error has occurred during the automatic erase (the block erase or
erase all unlocked blocks) operation and cleared to “0” by executing the clear status register command.
This bit is also cleared to “0” at reset.
0
1
2
3
4
5
6
7
)
)
)
)
)
)
)
)
—
—
—
—
Programming Status
Erase Status
—
—
Status
7905 Group User’s Manual Rev.1.0
—
—
—
—
Terminated normally.
Terminated normally.
—
—
“0”
Definition
—
—
—
—
Error<Programming error>
Error<Erase error>
—
—
“1”
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