NEC 78K0 Series User Manual page 571

26.7.4 Communication commands
The 78K0/KE2 communicates with the dedicated flash programmer by using commands. The signals sent from the
flash programmer to the 78K0/KE2 are called commands, and the signals sent from the 78K0/KE2 to the dedicated
flash programmer are called response.
The flash memory control commands of the 78K0/KE2 are listed in the table below. All these commands are
issued from the programmer and the 78K0/KE2 perform processing corresponding to the respective commands.
Classification
Verify
Erase
Blank check
Data write
System setting, control
The 78K0/KE2 return a response for the command issued by the dedicated flash programmer. The response
names sent from the 78K0/KE2 are listed below.
ACK
NAK
CHAPTER 26 FLASH MEMORY
Figure 26-14. Communication Commands
Axxxx
Bxxxxx
Cxxxxxx
STATVE
PG-FP4
Dedicated flash
programmer
Table 26-8. Flash Memory Control Commands
Command Name
Batch verify command
Batch erase command
Batch blank check command
High-speed write command
Successive write command
Status read command
Oscillation frequency setting command
Erase time setting command
Write time setting command
Baud rate setting command
Silicon signature command
Reset command
Table 26-9. Response Names
Response Name
Preliminary User's Manual U17260EJ3V1UD
Command
Response
78K0/KE2
Compares the contents of the entire memory
with the input data.
Erases the contents of the entire memory.
Checks the erasure status of the entire memory.
Writes data by specifying the write address and
number of bytes to be written, and executes a
verify check.
Writes data from the address following that of
the high-speed write command executed
immediately before, and executes a verify
check.
Obtains the operation status
Sets the oscillation frequency
Sets the erase time for batch erase
Sets the write time for writing data
Sets the baud rate when UART is used
Reads the silicon signature information
Escapes from each status
Function
Acknowledges command/data.
Acknowledges illegal command/data.
Function
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