NEC HPD70F3709/HPD70F3710/HPD70F3711/HPD70F3712 User Manual

About this manual

This manual provides detailed information on the hardware functions of the NEC V850ES/HJ2 microcontroller family, including pin descriptions, CPU operation, on‑chip peripherals, flash programming, and electrical specifications. It is intended for engineers designing systems with the HPD70F3709, HPD70F3710, HPD70F3711, and HPD70F3712 devices.

The document also includes safety precautions such as ESD handling, power‑on/off sequencing, and guidelines for unused input pins, as well as references to related development tools and additional technical resources.

What's inside

• Preface
• Conventions
• Pin Functions
• CPU Function
• On‑chip Peripheral Functions
• Flash Memory Programming
• Interrupts and Exceptions
• Electrical Specifications
• Power On/Off Sequence
• ESD Precautions

Frequently asked questions

How should the power‑on sequence be performed for devices with separate internal and external supplies?

Switch on the internal power supply first, then switch on the external power supply.

Can signals be applied to the device while it is powered off?

No, input signals or I/O pull‑up power should not be applied when the device is not powered.