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CHAPTER 27
µ
PD78F4225 AND
µ
PD78F4225Y PROGRAMMING
User’s Manual U12697EJ3V0UM
27.2 Flash Memory Overwriting
The
µ
PD78F4225 is equipped with an on-chip 128 KB flash memory. The following method is available for
overwriting in the on-chip flash memory.
• On-board overwrite mode: Overwriting performed with the use of the flash writer.
Flash memory overwriting can be performed 20 times.
+10 V of voltage is required for deleting and writing in the flash memory.
27.3 On-Board Overwrite Mode
The on-board overwrite mode is used with the target system mounted (on-board). Overwriting is performed by
connecting a special flash programmer (Flashpro III (part No.: FL-PR3, PG-FP3) ) to the host machine or target system.
Overwriting is controlled via the serial interface.
Writing to the flash memory can be performed using the flash memory write adapter connected to Flashpro III.
Remark
Flashpro III is a product of Naito Densei Machida Mfg. Co., Ltd.
On-board overwrite mode settings are performed by controlling the TEST/V
PP
pin and RESET pin. Serial interface
selected is performed with the number of pulses applied to the TEST/V
PP
pin.
