Renesas UPD70F3740GC-UEU-AX

Overview

UPD70F3740GC-UEU-AX from Renesas Electronics is a 32-bit V850ES/JG3 microcontroller with 512 KB on-chip Flash, 64 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, and targets real-time embedded control in industrial automation and automotive body electronics.

For engineers reviewing the UPD70F3740GC-UEU-AX datasheet, UPD70F3740GC-UEU-AX pinout, UPD70F3740GC-UEU-AX application, or UPD70F3740GC-UEU-AX equivalent, key selection criteria include its V850ES CPU core compatibility, CAN 2.0B interface support, Flash programming voltage range (2.7–3.6 V), and 100-pin LQFP package with configurable I/O ports.

Technical Context

The UPD70F3740GC-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 internal oscillators (e.g., 8 MHz RC) and external crystal inputs (1–20 MHz), enabling flexible system timing with programmable wait states and bus hold functionality.

Its peripheral set includes two independent 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 memory-mapped registers and interrupt-driven operation.

Key Specifications

Pinout & Package

UPD70F3740GC-UEU-AX is housed in a 100-pin LQFP package (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions include dedicated power/ground pairs (VDD, VSS), reset (RES#), clock inputs (XIN/XOUT), CANH/CANL differential pair, UART0/UART1 TX/RX, I²C SDA/SCL, and 82 configurable GPIOs grouped across Ports 0, 1, 3–9, CM, CT, DH, and DL.

Key Features

Applications

Equivalent & Alternatives

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

Compared with UPD70F3740GC-UEU-AX, R5F57016ADFP offers higher compute throughput but adds BOM cost and design complexity for CAN, while UPD70F3739GC-UEU-AX delivers identical peripheral functionality at lower memory capacity - making it a true pin-and-code compatible alternative for memory-constrained implementations.

Availability

UPD70F3740GC-UEU-AX is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, and smart energy metering applications requiring stable component supply, long-term lifecycle support, and industrial-grade temperature operation (−40°C to +85°C).

Supply support for UPD70F3740GC-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 V850ES/JG3 product line delivers high-reliability 32-bit MCUs optimized for real-time control in automotive body electronics and industrial equipment, emphasizing CAN integration, Flash endurance, and deterministic interrupt response.

FAQ

What is the maximum operating frequency of the UPD70F3740GC-UEU-AX?

The UPD70F3740GC-UEU-AX supports a maximum system clock frequency of 40 MHz, achieved using its on-chip PLL to multiply external crystal (1–20 MHz) or internal RC oscillator inputs. This frequency is validated across the full industrial temperature range (−40°C to +85°C) and ensures deterministic execution of time-critical tasks such as CAN message handling and PWM generation in the UPD70F3740GC-UEU-AX.

Does the UPD70F3740GC-UEU-AX include a built-in CAN controller?

Yes, the UPD70F3740GC-UEU-AX integrates a full CAN 2.0B controller with 32 message objects, FIFO buffering, and automatic retransmission. It supports standard and extended identifiers and requires only an external CAN transceiver (e.g., TJA1042) connected to pins 72 (CANH) and 73 (CANL) to implement a complete CAN node - a core capability of the UPD70F3740GC-UEU-AX.

What package type and pin count does the UPD70F3740GC-UEU-AX use?

The UPD70F3740GC-UEU-AX uses a 100-pin LQFP package (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad. This RoHS-compliant package provides 82 general-purpose I/O pins alongside dedicated power, clock, reset, and peripheral interface pins - matching the mechanical and thermal requirements specified in Renesas' Hardware Manual for the UPD70F3740GC-UEU-AX.

How much on-chip Flash and RAM does the UPD70F3740GC-UEU-AX have?

UPD70F3740GC-UEU-AX includes 512 KB of on-chip SuperFlash® memory and 64 KB of SRAM. The Flash supports in-application programming (IAP) with ≥10⁴ erase/write cycles, while the RAM serves as runtime data storage and stack space - both capacities are fixed and fully utilized in certified firmware builds for the UPD70F3740GC-UEU-AX.

Is the UPD70F3740GC-UEU-AX qualified for automotive applications?

The UPD70F3740GC-UEU-AX is rated for industrial temperature range (−40°C to +85°C) and classified as "Standard" quality grade per Renesas documentation, making it suitable for automotive body electronics (e.g., BCM, lighting control) but not for safety-critical powertrain or ADAS systems. Its CAN 2.0B controller and robust ESD tolerance align with AEC-Q100 stress test expectations for non-safety automotive use cases of the UPD70F3740GC-UEU-AX.