Renesas UPD70F3743GJ-GAE-AX

Overview

UPD70F3743GJ-GAE-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 32 MHz, supports single-cycle instruction execution, and targets real-time embedded control in industrial and automotive subsystems.

For engineers reviewing the UPD70F3743GJ-GAE-AX datasheet, UPD70F3743GJ-GAE-AX pinout, UPD70F3743GJ-GAE-AX application, or UPD70F3743GJ-GAE-AX equivalent, key selection criteria include its V850ES CPU core compatibility, CAN interface capability, Flash programming voltage range (2.7–3.6 V), and 100-pin LQFP package with dedicated debug pins (TCK/TDI/TDO/TMS).

Technical Context

The UPD70F3743GJ-GAE-AX implements the V850ES RISC architecture with 32-bit data path, 32 general-purpose registers, and 16 interrupt levels. It integrates a PLL-based clock generator supporting internal/external oscillators (1–20 MHz crystal) and programmable wait states for external memory access.

Its peripheral set includes two 16-bit timer/event counters (TMP and TMQ) with PWM, pulse-width measurement, and one-shot output modes; a full-duplex UART with automatic baud rate detection; an I²C-compatible serial interface; and a CAN 2.0B controller with 32 message objects and FIFO support - all accessible via memory-mapped I/O registers.

Key Specifications

Pinout & Package

UPD70F3743GJ-GAE-AX is housed in a 100-pin LQFP package with exposed thermal pad. Pin functions include multiplexed I/O ports (P0–P9, PCT, PCM, PDH, PDL), dedicated CANH/CANL differential pair, JTAG debug interface (TCK/TDI/TDO/TMS/TRST), reset (RES#), and power/ground distribution optimized for noise immunity and thermal dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with UPD70F3743GJ-GAE-AX, R5F57016ADFP offers CAN FD and higher safety features but requires PCB redesign; UPD70F3739GJ-GAE-AX provides drop-in compatibility with lower memory capacity, enabling direct substitution in space-constrained layouts.

Availability

UPD70F3743GJ-GAE-AX is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, motor drive feedback interfaces, and energy meter communication hubs requiring stable component supply and long-term lifecycle support.

Supply support for UPD70F3743GJ-GAE-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 manufacturer headquartered in Japan, specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The UPD70F3743GJ-GAE-AX belongs to the V850ES/JG3 microcontroller family, designed for deterministic real-time control in resource-constrained embedded systems requiring high reliability and CAN connectivity.

FAQ

What is the maximum operating frequency of the UPD70F3743GJ-GAE-AX?

The UPD70F3743GJ-GAE-AX supports a maximum system clock frequency of 32 MHz when using the internal PLL with an external crystal oscillator in the 1–20 MHz range. This frequency is sustained across the full operating voltage range (2.7–3.6 V) and ambient temperature range (–40°C to +85°C), enabling deterministic real-time execution of control loops and communication protocols without throttling.

Does the UPD70F3743GJ-GAE-AX support CAN FD?

No, the UPD70F3743GJ-GAE-AX implements a CAN 2.0B controller compliant with ISO 11898-1, supporting bit rates up to 1 Mbps and standard/extended frame formats. It does not support CAN FD features such as flexible data-rate or extended payload length. For CAN FD capability, consider Renesas' RX600 or RA6M series MCUs instead of the UPD70F3743GJ-GAE-AX.

What debug interface does the UPD70F3743GJ-GAE-AX use?

The UPD70F3743GJ-GAE-AX uses a standard 5-pin JTAG interface (TCK, TDI, TDO, TMS, TRST#) for on-chip debugging, flash programming, and boundary-scan testing. This interface is fully compatible with Renesas' E1/E20 emulators and third-party tools supporting IEEE 1149.1, enabling real-time code download and breakpoint debugging without requiring additional SWD or cJTAG circuitry on the UPD70F3743GJ-GAE-AX target board.

Is the UPD70F3743GJ-GAE-AX pin-compatible with other V850ES/JG3 devices?

Yes, the UPD70F3743GJ-GAE-AX shares the same 100-pin LQFP package and pin assignment with other members of the V850ES/JG3 family, including UPD70F3739GJ-GAE-AX, UPD70F3740GJ-GAE-AX, and UPD70F3741GJ-GAE-AX. This allows direct PCB footprint reuse across variants differing only in Flash/RAM size or peripheral enablement, provided the target application does not require features disabled in lower-tier models.

What is the Flash endurance specification for the UPD70F3743GJ-GAE-AX?

The UPD70F3743GJ-GAE-AX incorporates SuperFlash® technology with guaranteed endurance of 100,000 write/erase cycles per sector and data retention of 10 years at 85°C. This specification applies to the full 512 KB on-chip Flash memory and is validated under standard operating conditions (2.7–3.6 V, –40°C to +85°C), making it suitable for firmware updates and parameter storage in industrial and automotive applications.