CHAPTER 18 FLASH MEMORY
Preliminary User’s Manual U16898EJ1V0UD
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18.3 Functional Outline
The internal flash memory of the 78K0S/KA1+ can be rewritten by using the rewrite function of the dedicated flash
programmer, regardless of whether the 78K0S/KA1+ has already been mounted on the target system or not (on-
board/off-board programming).
In addition, a security function that prohibits rewriting the user program written to the internal flash memory is also
supported, so that the program cannot be changed by an unauthorized person.
The rewrite function using the user program (self programming) is ideal for an application where it is assumed that
the program is changed after production/shipment of the target system.
Table 18-1. Rewrite Method
Rewrite Method
Functional Outline
Operation Mode
On-board programming
Flash memory can be rewritten after the device is mounted on the
target system, by using a dedicated flash programmer.
Off-board programming
Flash memory can be rewritten before the device is mounted on the
target system, by using a dedicated flash programmer and a dedicated
program adapter board (FA series).
Flash memory
programming mode
Self programming
Flash memory can be rewritten by executing a user program that has
been written to the flash memory in advance by means of on-board/off-
board programming.
Normal operation mode
Remark The FA series is a product of Naito Densei Machida Mfg. Co., Ltd.
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