m37516e6hp Renesas Electronics Corporation., m37516e6hp Datasheet - Page 73

• Manufacturer Part Number: m37516e6hp
• Description: Single-chip 8-bit Cmos Microcomputer
• Manufacturer: Renesas Electronics Corporation.

7516 Group
Table 18 Definition of each bit of status register (SRD)
Rev.1.01
The status register indicates operating status of the flash memory
and status such as whether an erase operation or a program
ended successfully or in error. It can be read by writing the read
status register command (70
cleared by writing the clear status register command (50
Table 18 lists the definition of each status register bit. After releas-
ing the reset, the status register becomes “80
Status Register (SRD)
SRD0 bits
SR7 (bit7)
SR6 (bit6)
SR5 (bit5)
SR4 (bit4)
SR3 (bit3)
SR2 (bit2)
SR1 (bit1)
SR0 (bit0)
Jul 01, 2003
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16
Sequencer status
Reserved
Erase status
Program status
Reserved
Reserved
Reserved
Reserved
). Also, the status register is
Status name
16
”.
16
).
•Sequencer status (SR7)
The sequencer status indicates the operating status of the flash
memory.
After power-on and recover from deep power down mode, the se-
quencer status is set to “1” (ready).
This status bit is set to “0” (busy) during write or erase operation
and is set to “1” upon completion of these operations.
•Erase status (SR5)
The erase status indicates the operating status of erase operation.
If an erase error occurs, it is set to “1”. When the erase status is
cleared, it is set to “0”.
•Program status (SR4)
The program status indicates the operating status of write opera-
tion. If a program error occurs, it is set to “1”. When the program
status is cleared, it is set to “0”.
Terminated in error
Terminated in error
Ready
“1”
-
-
-
-
-
Definition
Terminated normally
Terminated normally
Busy
“0”
-
-
-
-
-