Renesas UPD70F3939BGJA-GAE-G

Overview

UPD70F3939BGJA-GAE-G from Renesas Electronics is a 32-bit V850E/SJ3-H microcontroller featuring a 48 MHz CPU clock, 512 KB on-chip Flash memory, 64 KB RAM, and integrated peripherals including 12-bit ADC (16 channels), UART, CAN 2.0B controller, and 32-bit timer units. It operates from 2.7–5.5 V and targets industrial motor control and factory automation systems requiring deterministic real-time response.

For engineers reviewing the UPD70F3939BGJA-GAE-G datasheet, UPD70F3939BGJA-GAE-G pinout, UPD70F3939BGJA-GAE-G application, or UPD70F3939BGJA-GAE-G equivalent, key selection criteria include its V850E ISA compatibility, CAN interface integration, Flash endurance (100K write/erase cycles), and AEC-Q100 Grade 2 qualification for extended temperature operation (−40°C to +105°C).

Technical Context

The UPD70F3939BGJA-GAE-G implements the V850E core with 5-stage pipeline execution, supporting both little-endian and big-endian data access modes. It integrates a dedicated CAN controller compliant with ISO 11898-1:2003, supporting up to 64 message objects with programmable acceptance filtering and automatic retransmission.

Its peripheral set includes three 32-bit general-purpose timers with input capture/compare and PWM output capability, a 12-bit successive-approximation ADC with hardware-triggered sampling and scan mode, and an on-chip voltage regulator enabling single-supply operation across the full 2.7–5.5 V range.

Key Specifications

Pinout & Package

The UPD70F3939BGJA-GAE-G is housed in a 144-pin LQFP package (20 mm × 20 mm, 0.5 mm pitch) with exposed thermal pad for enhanced heat dissipation in high-duty-cycle motor control applications.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with UPD70F3939BGJA-GAE-G, the R5F566TEADFP#30 offers higher CPU performance at the cost of added software complexity and external CAN transceiver dependency, while the UPD70F3938BGJA-GAE-G provides identical peripheral timing and pinout with reduced memory - enabling direct substitution where code size permits.

Availability

UPD70F3939BGJA-GAE-G is available at Aetrix Electronics and suitable for industrial motor control, factory automation PLCs, and automotive body electronics requiring stable component supply and long-term lifecycle assurance.

Supply support for UPD70F3939BGJA-GAE-G includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The V850E/SJ3-H product line delivers high-reliability 32-bit MCUs optimized for real-time deterministic control in harsh environments, with emphasis on CAN-based networking, motor drive timing precision, and extended temperature resilience.

FAQ

What is the maximum operating frequency of the UPD70F3939BGJA-GAE-G?

The UPD70F3939BGJA-GAE-G operates at a maximum CPU clock frequency of 48 MHz, achieved using the on-chip PLL with external crystal or ceramic resonator input. This frequency is fully supported across the entire −40°C to +105°C operating temperature range and 2.7–5.5 V supply voltage, with timing margins verified per Renesas Hardware User's Manual Rev.5.00.

Does the UPD70F3939BGJA-GAE-G include a CAN controller?

Yes, the UPD70F3939BGJA-GAE-G integrates a dedicated CAN 2.0B controller compliant with ISO 11898-1:2003. It supports bit rates up to 1 Mbit/s, 64 message objects with hardware acceptance filtering, and automatic retransmission on error - all without CPU intervention. External CAN transceiver (e.g., TJA1042) is required for physical layer interfacing.

What development tools are supported for the UPD70F3939BGJA-GAE-G?

The UPD70F3939BGJA-GAE-G is supported by Renesas' IE-V850E1-CD-NW on-chip debug emulator and QB-V850MINIL debugger. Software toolchain includes CA850 C Compiler Ver. 3.20, ID850QB Integrated Debugger Ver. 3.40, and PG-FP5 Flash Programmer. Renesas-provided device files and startup code are included in the V850E/SJ3-H Hardware User's Manual.

Is the UPD70F3939BGJA-GAE-G qualified for automotive applications?

Yes, the UPD70F3939BGJA-GAE-G is AEC-Q100 Grade 2 qualified (−40°C to +105°C), making it suitable for automotive body electronics, gateway modules, and chassis subsystems. It meets stringent automotive reliability requirements including HTOL, ESD, and EMC testing - confirmed in Renesas' official qualification reports for the V850E/SJ3-H family.

How much Flash memory does the UPD70F3939BGJA-GAE-G provide?

The UPD70F3939BGJA-GAE-G provides 512 KB of on-chip Flash memory with 100,000 write/erase cycle endurance and data retention exceeding 20 years at +85°C. Flash is organized into 2 KB sectors and supports in-application programming (IAP) via the built-in bootloader, enabling secure field firmware updates without external programmers.