NEC 78K0S/KA1+ User Manual page 275

User program
Specific sequence
Self programming
command completion/error
Flash memory
control block (hardware)
Command Name
Internal verify This command is used to check if data has been
correctly written to the flash memory. After data has
been written to the memory, specify the block number,
the start address, and the end address, then execute
this command.
Block erasure This command is used to erase a specified block.
Specify the block number before execution.
Block blank check This command is used to check if data in a specified
block has been erased. Specify the block number,
then execute this command.
Byte write This command is used to write 1-byte data to the
specified address in the flash memory. Specify the
write address and write data, then execute this
command.
CHAPTER 18 FLASH MEMORY
Figure 18-11. Self Programming State Transition Diagram
Normal mode
Self programming mode
Self programming command
execution by HALT instruction
Self programming
command under execution
Flash memory
Table 18-11. Self Programming Controlling Commands
Function
User's Manual U16898EJ3V0UD
Operation setting
Operation
setting Register for
self programming
Operation reference
Time Taken from HALT Instruction Execution
to Command Execution End
Internal verify for 1 block (internal verify
command executed once): 6.8 ms
Internal verify for 1 byte:
8.5 ms
µ
480 s
µ
150 s
µ
27 s
275