CHAPTER 16 FLASH MEMORY (
µµµµ
PD70F3116)
738
User’s Manual U14492EJ3V0UD
16.6.4 Communication commands
The V850E/IA1 communicates with the dedicated flash programmer by means of commands. A command sent
from the dedicated flash programmer to the V850E/IA1 is called a “command”. The response signal sent from the
V850E/IA1 to the dedicated flash programmer is called the “response command”.
Figure 16-11. Communication Commands
V850E/IA1
Dedicated flash programmer
Command
Response
command
PG-FP4
(Flash Pro4)
Cxxxxxx
Bxxxxx
Axxxx
X
X
X
Y
Y
Y
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Y
Y
Y
Y
STATVE
The following shows the commands for controlling flash memory of the V850E/IA1. All of these commands are
issued from the dedicated flash programmer, and the V850E/IA1 performs the various processing corresponding to
the commands.
Table 16-4. Commands for Controlling Flash Memory
Category
Command Name
Function
Batch verify command
Compares the contents of the entire memory and
the input data.
Verify
Area verify command
Compares the contents of the specified area and
the input data.
Batch erase command
Erases the contents of the entire memory.
Area erase command
Erases the contents of the specified area.
Erase
Write back command
Writes back the contents which were erased.
Batch blank check command
Checks the erase state of the entire memory.
Blank check
Area blank check command
Checks the erase state of the specified area.
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.
Data write
Continuous write command
Writes data from the address following the high-
speed write command executed immediately
before, and executes verify check.
Status read out command
Acquires the status of operations.
Oscillation frequency setting command
Sets the oscillation frequency.
Erasing time setting command
Sets the erasing time of batch erase.
Writing time setting command
Sets the writing time of data write.
Write back time setting command
Sets the write back time.
Silicon signature command
Reads outs the silicon signature information.
System setting and control
Reset command
Escapes from each state.
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