MITSUBISHI MICROCOMPUTERS
M37905F8CFP, M37905F8CSP
16-BIT CMOS MICROCOMPUTER
Status Register Read
YES
SR.4 = 1
and
Command Sequence
Error
✕ Execute the clear status register command (5016) to clear the status register.
✕ Confirm whether the command has correctly been input or not; and then,
start the operation again.
SR.5 = 1
?
NO
SR.5 = 0?
YES
NO
NO
Perform the block erase operation again.
If an error occurs even after the above operation is performed, the block cannot be used.
Block Erase Error
Programming Error
Perform the programming operation again.
If an error occurs even after the above operation is performed, the word cannot be used.
SR.4 = 0?
YES
End
(Block erase, Programming)
Note: Under the condition that any of SR.5 and SR.4 = 1 , none of the programming,
block erase, and erase all block commands can be accepted. Before execution
of these commands, execute the clear status register command (5016) in advance.
Fig. 11 Full status check flowchart and actions to be taken if an error has ocurred
DC Electrical Characteristics (VCC = 5 V ± 0.5 V, Ta = 0 to 60 °C, f(fsys) = 20 MHz (Note))
Limits
Unit
Symbol
Parameter
Min.
Typ.
30
Max.
Icc1
Icc2
Icc3
Icc4
VCC power source current (at read)
VCC power source current (at write)
VCC power source current (at programming)
VCC power source current (at erasing)
mA
mA
mA
mA
48
48
54
54
Limits of VIH, VIL, VOH, VOL, IIH, and IIL for each pin are the same as those in the microcomputer mode.
Note: f(fsys) indicates the system clcok (fsys) frequency.
AC Electrical Characteristics (VCC = 5 V ± 0.5 V, Ta = 0 to 60 °C, f(fsys) = 20 MHz (Note))
Limits
Parameter
Unit
Min.
Typ.
4
0.6
Max.
40
8
256-byte programming time
Block erase time
ms
s
Erase all block time
s
8 ✕ n
0.6 ✕ n
n = Number of blocks to be erased
The limits of parameters other than the above are same as those in the microcomputer mode.
Note: f(fsys) indicates the system clock (fsys) frequency.
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RENESAS [ RENESAS TECHNOLOGY CORP ]
