User’s Manual U12688EJ4V0UM00
413
CHAPTER 14 FLASH MEMORY (
µµµµ
PD70F3102, 70F3102A)
The
µ
PD70F3102 and 70F3102A are V850E/MS1 on-chip flash memory products with a 128KB flash memory. In
the instruction fetch to this flash memory, 4 bytes can be accessed by a single clock, just as in the mask ROM
version.
Writing to flash memory can be performed with the device 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 applications of flash memory.
• Software can be altered after the V850E/MS1 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.
14.1 Features
• 4-byte/1-clock access (in instruction fetch access)
• All area one-shot erase
• Erase in 4KB block units
• Communication through serial interface from the dedicated flash programmer
• Erase/write voltage: V
PP
= 7.8 V
• On-board programming
• Number of rewrites: 100 times (target)
14.2 Writing by Flash Programmer
Writing can be performed either on-board or off-board by the dedicated flash programmer.
(1) On-board programming
The contents of the flash memory are rewritten after the V850E/MS1 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/MS1 on the target system.
Remark
The FA Series is a product of Naito Densei Machida Mfg. Co., Ltd.
Содержание V850E/MS1 UPD703100
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