upd70f3017ay Renesas Electronics Corporation., upd70f3017ay Datasheet - Page 415

• Manufacturer Part Number: upd70f3017ay
• Description: V850/sa1tm 32-/16-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

16.7.3 Outline of self-programming interface
and software for manipulating the flash memory must be satisfied.
(1) Entry program
(2) Device internal processing
(3) RAM parameter
16.7.4 Hardware environment
circuit that can generate a write voltage (V
system. An example of a circuit that can select a voltage to be applied to the V
below.
To execute self-programming using the self-programming interface, the environmental conditions of the hardware
It is assumed that the self-programming interface is used in an assembly language.
The self-programming interface is outlined below.
To write or erase the flash memory, a high voltage must be applied to the V
This program is used to call the internal processing of the device.
It is a part of the application program, and must be executed in memory other than the internal ROM area
(flash memory).
This is manipulation of the flash memory executed inside the device.
This processing manipulates the flash memory after it has been called by the entry program.
This is a RAM area to which the parameters necessary for self-programming, such as write time and erase
time, are written. It is set by the application program and referenced by the device internal processing.
Figure 16-15. Outline of Self-Programming Interface
Device internal processing
Application program
Entry program
Flash memory
CHAPTER 16 FLASH MEMORY
PP
) and that can be controlled by software is necessary on the application
User’s Manual U12768EJ4V1UD
Self-programming
interface
Flash-memory manipulation
RAM parameter
PP
PP
pin. To execute self-programming, a
pin by manipulating a port is shown
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