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CHAPTER 27 FLASH MEMORY (TWO POWER)
User’s Manual U16890EJ1V0UD
697
27.6.4 Communication commands
The V850ES/KG1 communicates with the flash programmer by using commands. The signals sent from the flash
programmer to the V850ES/KG1 are called “commands”, and the commands sent from the V850ES/KG1 to the flash
programmer are called “response commands”.
Figure 27-13. Communication Commands
Flash programmer
Command
Response command
V850ES/KG1
PG-FP4
(Flash Pro4)
Cxxxxxx
Bxxxxx
Axxxx
XY
X
X
X
XY
STATVE
The flash memory control commands of the V850ES/KG1 are listed in the table below. All these commands are
issued from the programmer and the V850ES/KG1 performs processing corresponding to the respective commands.
Table 27-5. Flash Memory Control Commands
Classification
Command Name
Function
Verify
Batch verify command
Compares the contents of the entire memory
with the input data.
Erase
Batch erase command
Erases the contents of the entire memory.
Blank check
Batch blank check command
Checks the erasure status of the entire memory.
High-speed write command
Writes data by specifying the write address and
number of bytes to be written, and executes a
verify check.
Data write
Successive write command
Writes data from the address following that of
the high-speed write command executed
immediately before, and executes a verify
check.
Status read command
Obtains the operation status
Oscillation frequency setting command
Sets the oscillation frequency
Erase time setting command
Sets the erase time for batch erase
Write time setting command
Sets the write time for writing data
Baud rate setting command
Sets the baud rate when UART is used
Silicon signature command
Reads the silicon signature information
System setting, control
Reset command
Escapes from each status
The V850ES/KG1 returns a response command for the command issued by the dedicated flash programmer. The
response commands sent from the V850ES/KG1 are listed below.
Table 27-6. Response Commands
Command Name
Function
ACK
Acknowledges command/data.
NAK
Acknowledges illegal command/data.