Renesas UPD70F3739GC-UEU-AX

Overview

UPD70F3739GC-UEU-AX from Renesas Electronics is a 32-bit V850ES/JG3 microcontroller with 512 KB on-chip Flash, 48 KB RAM, and integrated peripherals including 16-bit timers (TMP/TMQ), UART, I²C, and CAN 2.0B controller. It operates at up to 40 MHz, supports single-cycle instruction execution for critical real-time tasks, and targets industrial control and automotive body electronics.

For engineers reviewing the UPD70F3739GC-UEU-AX datasheet, UPD70F3739GC-UEU-AX pinout, UPD70F3739GC-UEU-AX application, or UPD70F3739GC-UEU-AX equivalent, key selection criteria include its V850ES CPU core compatibility, 100-pin LQFP package with 79 I/Os, CAN interface timing compliance, Flash endurance (100k write/erase cycles), and operating temperature range (–40°C to +85°C).

Technical Context

The UPD70F3739GC-UEU-AX implements the V850ES RISC architecture with 32-bit data path, 20-bit address space, and Harvard-style memory organization. It integrates a PLL-based clock generator supporting 1–40 MHz system clocks, programmable wait states for external memory access, and bus hold/idle insertion for low-power operation during peripheral wait conditions.

Its on-chip peripheral set includes two 16-bit timer/event counters (TMP and TMQ) with PWM, pulse width measurement, and one-shot output modes; dual UART channels with LIN support; an I²C-compatible serial interface; and a full-CAN 2.0B controller with 32 message objects and FIFO buffering - all accessible via dedicated register banks mapped in the peripheral I/O address space.

Key Specifications

Pinout & Package

UPD70F3739GC-UEU-AX is housed in a 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch) package with exposed thermal pad. Pin assignments follow Renesas' standardized V850ES/JG3 pin configuration, supporting multiplexed functions across Port 0–9, Port CM, CT, DH, and DL.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 32-bit industrial microcontroller applications.

Compared with R5F566TEADFP and UPD70F3740GC-UEU-AX, the UPD70F3739GC-UEU-AX offers optimal balance of CAN-integrated functionality, industrial temperature tolerance, and cost-sensitive Flash/RAM sizing - making it ideal for established designs where pin compatibility and minimal layout change are critical.

Availability

UPD70F3739GC-UEU-AX is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC subsystems, smart HVAC controllers, and factory automation sensor hubs requiring stable component supply and long-term lifecycle support.

Supply support for UPD70F3739GC-UEU-AX 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 UPD70F3739GC-UEU-AX belongs to the V850ES/JG3 microcontroller family, designed specifically for cost-sensitive, real-time embedded applications requiring CAN connectivity, deterministic timing, and robust operation in harsh industrial environments.

FAQ

What is the maximum operating frequency of the UPD70F3739GC-UEU-AX?

The UPD70F3739GC-UEU-AX supports a maximum system clock frequency of 40 MHz, achieved via its on-chip PLL that multiplies an external 1–8 MHz crystal or resonator input. This frequency is sustained across the full operating voltage range (2.7–5.5 V) and temperature range (–40°C to +85°C), enabling deterministic real-time execution of time-critical tasks such as motor control and CAN message handling without clock throttling.

Does the UPD70F3739GC-UEU-AX include a built-in CAN controller?

Yes, the UPD70F3739GC-UEU-AX integrates a full CAN 2.0B controller compliant with ISO 11898-1, supporting bit rates up to 1 Mbps, 32 message objects with individual masking, automatic retransmission, and error confinement. It requires only an external CAN transceiver (e.g., TJA1042) for physical layer connection - no additional protocol translation logic is needed.

What package type and pin count does the UPD70F3739GC-UEU-AX use?

The UPD70F3739GC-UEU-AX uses a 100-pin LQFP package (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad. It provides 79 general-purpose I/O pins, multiple power/ground pairs, and dedicated pins for clock, reset, debug (NMI, TRST), and peripheral interfaces including CAN, UART, I²C, and ADC.

Is the UPD70F3739GC-UEU-AX compatible with Renesas' standard development tools?

Yes, the UPD70F3739GC-UEU-AX is fully supported by Renesas' E2 studio IDE, CS+ (formerly CubeSuite+), and the PG-FP4 Flash programmer. It is also compatible with the QB-MINI2 and QB-V850MINI on-chip debug emulators, enabling full JTAG-based debugging, flash programming, and real-time trace capabilities during firmware development and validation of the UPD70F3739GC-UEU-AX.

What is the Flash endurance specification for the UPD70F3739GC-UEU-AX?

The UPD70F3739GC-UEU-AX features 512 KB of on-chip Flash memory based on SuperFlash® technology, rated for 100,000 write/erase cycles and guaranteed 10-year data retention at +85°C ambient temperature. This endurance level supports robust field firmware updates and diagnostic log storage in industrial applications where long service life is required.