NEC PD703114 User Manual page 603

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The PD70F3114 is the flash memory version of the V850E/IA2 and has an on-chip 128 KB flash memory.
Caution There are differences in noise immunity and noise radiation between the flash memory and mask
ROM versions. When pre-producing an application set with the flash memory version and then
mass producing it with the mask ROM version, be sure to conduct sufficient evaluations on the
commercial samples (CS) (not engineering samples (ES)) of the mask ROM versions.
Writing to flash memory can be performed with the memory mounted on the target system (on board). A dedicated
flash programmer is connected to the target system to perform writing.
The following can be considered as the development environment and the applications of flash memory.
• Software can be changed after the V850E/IA2 is solder-mounted on the target system.
• Small scale production of various models is made easier by differentiating software.
• Data adjustment in starting mass production is made easier.
15.1 Features
• All area batch erase
• Communication via serial interface from the dedicated flash programmer
• Erase/write voltage: V
• On-board programming
15.2 Writing Using Flash Programmer
Writing can be performed either on-board or off-board using a dedicated flash programmer.
Caution When writing flash memory using the flash programmer, be sure to operate the V850E/IA2 at ×5
frequency in PLL mode.
(1) On-board programming
The contents of the flash memory are rewritten after the V850E/IA2 is mounted on the target system. Mount
connectors, etc., on the target system to connect the dedicated flash programmer.
(2) Off-board programming
Writing to flash memory is performed by the dedicated program adapter (FA series), etc., before mounting the
V850E/IA2 on the target system.
Remark The FA series is a product of Naito Densei Machida Mfg. Co., Ltd.
CHAPTER 15 FLASH MEMORY (
= 7.8 V
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User's Manual U15195EJ5V0UD
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PD70F3114)
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