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CHAPTER 14 FLASH MEMORY (μPD70F3003 AND 70F3003A)
14.6.4 Communication command
The V853 communicates with the dedicated flash programmer by means of commands. The command sent from
the dedicated flash programmer to the V853 is called a “command”. The response signal sent from the V853 to the
dedicated flash programmer is called a “response command”.
The following shows the command of the firmware for flash memory control of the V853. All of these commands
are issued from the dedicated flash programmer, and the V853 performs the various processings corresponding to
the commands.
Category
Command Name
Function
Verify
One-shot verify command
Compares the contents of the entire memory
and the input data.
Block verify command
Compares the contents of the specified memory
block and the input data.
Erase
One-shot erase command
Erases the contents of the entire memory.
Block erase command
Erases the contents of the specified memory
block setting 4 Kbytes as one memory block.
Write back command
Writes back the contents which is overerased.
Blank check
One-shot blank check command
Checks the erase state of the entire memory.
Block blank check command
Checks the erase state of the specified memory
block.
Data write
High-speed write command
Writes data by the specification of the write
address and the number of bytes to be written,
and executes verify check.
Continuous write command
Writes data from the address following the high-
speed write command executed immediately
before, and executes verify check.
System setting and control
Status read out command
Acquires the status of operations.
Oscillating frequency setting command
Sets the oscillating frequency.
Erasing time setting command
Sets the erasing time of one-shot erase.
Writing time setting command
Sets the writing time of data write.
Write back time setting command
Sets the write back time.
Baud rate setting command
Sets the baud rate when using UART0.
Silicon signature command
Reads outs the silicon signature information.
Reset command
Escapes from each state.
V853
Dedicated flash programmer
Command
Response command