CHAPTER 19 FLASH MEMORY
User’s Manual U17446EJ3V1UD
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19.3 Functional Outline
The internal flash memory of the 78K0S/KB1+ can be rewritten by using the rewrite function of the dedicated flash
memory programmer, regardless of whether the 78K0S/KB1+ has already been mounted on the target system or not
(on-board/off-board programming).
The function for rewriting a program with the user program (self programming), which is ideal for an application
when it is assumed that the program is changed after production/shipment of the target system, is provided.
Refer to Figure 19-1 for the flash memory writing control function.
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.
Refer to
19.7.3 Security settings
for details on the security function.
Table 19-1. 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 memory programmer.
Off-board programming
Flash memory can be rewritten before the device is mounted on the
target system, by using a dedicated flash memory 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.
Self programming mode
Remarks
1.
The FA series is a product of Naito Densei Machida Mfg. Co., Ltd.
2.
Refer to the following sections for details on the flash memory writing control function.
•
19.7 On-Board and Off-Board Flash Memory Programming
•
19.8 Flash Memory Programming by Self Writing