Renesas UPD70F3378M2GJA-GAE-AX

Overview

UPD70F3378M2GJA-GAE-AX from NEC Electronics is a 32-bit V850ES/FE3 single-chip microcontroller featuring 256 KB on-chip Flash memory, 16 KB RAM, and integrated CAN 2.0B controller, UART, I²C, CSI, and 10-bit ADC with 16 channels. It operates at up to 32 MHz system clock (with PLL), supports 3.3–5.5 V supply, and targets industrial control and automotive body electronics applications.

For engineers reviewing the UPD70F3378M2GJA-GAE-AX datasheet, UPD70F3378M2GJA-GAE-AX pinout, UPD70F3378M2GJA-GAE-AX application, or UPD70F3378M2GJA-GAE-AX equivalent, key selection considerations include its 144-pin LQFP package, A-grade industrial temperature range (−40°C to +85°C), CAN timing compliance per ISO 11898-1, and Flash programming characteristics requiring VDD ≥ 3.3 V.

Technical Context

The UPD70F3378M2GJA-GAE-AX implements the V850ES CPU core with Harvard architecture, supporting 32-bit integer operations and 16-bit compressed instruction set. Its clock system includes main crystal oscillator (4–16 MHz), sub-oscillator (32 kHz), internal RC oscillator (240 kHz), and PLL for frequency multiplication up to 32 MHz.

Peripheral integration includes a 16-channel 10-bit successive-approximation ADC with AVREF0 reference input, programmable on-chip voltage regulator (VRO = 2.5 V), power-on reset (POC), low-voltage interrupt (LVI), and watchdog timer (WDT). All I/O pins are CMOS-compatible with configurable pull-up/pull-down and Schmitt-trigger inputs on select groups.

Key Specifications

Pinout & Package

UPD70F3378M2GJA-GAE-AX is housed in a 144-pin LQFP (Low-profile Quad Flat Package) with 0.5 mm pitch, body size 20 × 20 mm, and exposed thermal pad. Pin assignment follows the FE3 series layout defined in Document No. U18564EE1V2DS00, Section 1 (Pin Group Information).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F566TEADFP and SPC560B50L5, UPD70F3378M2GJA-GAE-AX delivers balanced 32-bit performance, integrated CAN, and industrial-grade reliability at lower system cost-ideal for cost-sensitive, non-safety-critical embedded controllers where moderate compute and robust communication are primary requirements.

Availability

UPD70F3378M2GJA-GAE-AX is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, factory automation I/O terminals, and smart energy metering gateways requiring stable component supply across extended product lifecycles.

Supply support for UPD70F3378M2GJA-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

NEC Electronics Corporation (now part of Renesas Electronics) was a leading Japanese semiconductor manufacturer specializing in microcontrollers, analog ICs, and display drivers before its 2010 merger with Renesas Technology.

The UPD70F3378M2GJA-GAE-AX belongs to the V850ES/FE3 microcontroller family, designed specifically for cost-effective, high-reliability embedded control in industrial equipment and automotive body electronics where CAN connectivity and Flash endurance are critical.

FAQ

What is the maximum operating frequency of the UPD70F3378M2GJA-GAE-AX?

The UPD70F3378M2GJA-GAE-AX achieves a maximum system clock frequency of 32 MHz using its on-chip PLL with a 4–16 MHz crystal input. This frequency is supported across the full A-grade temperature range (−40°C to +85°C) when VDD is maintained between 4.0 V and 5.5 V. At lower supply voltages (3.3–3.9 V), the maximum guaranteed frequency drops to 20 MHz per the AC characteristics table in the datasheet.

Does the UPD70F3378M2GJA-GAE-AX support CAN FD?

No, the UPD70F3378M2GJA-GAE-AX integrates a classical CAN 2.0B controller compliant with ISO 11898-1, supporting bit rates up to 1 Mbps but not CAN FD features such as variable bit rate, extended data length (up to 64 bytes), or CRC enhancements. Its CAN timing parameters (e.g., SJW, TSEG1, TSEG2) are fixed per the datasheet's Section 2.7.8 and do not support FD configuration registers.

What is the purpose of the VRO pin on the UPD70F3378M2GJA-GAE-AX?

The VRO pin on the UPD70F3378M2GJA-GAE-AX outputs a regulated 2.5 V supply generated by the internal voltage regulator. It powers internal analog blocks-including the PLL, ADC reference circuitry, and oscillator-ensuring stable operation independent of EVDD fluctuations. External decoupling (4.7 µF capacitor) is mandatory at the REGC terminal to maintain regulation stability, as specified in Section 2.4 of the datasheet.

Can the UPD70F3378M2GJA-GAE-AX operate with a 3.3 V supply only?

Yes, the UPD70F3378M2GJA-GAE-AX supports 3.3 V nominal operation (VDD = EVDD = 3.3–5.5 V), but functionality is reduced below 4.0 V: peripheral clock frequencies are limited to 20 MHz, and the ADC requires AVREF0 ≥ 4.0 V for full 10-bit accuracy. The device remains fully operational for CPU, Flash, RAM, and basic I/O functions at 3.3 V, making it compatible with standard 3.3 V logic systems.

Is there an official replacement or successor to the UPD70F3378M2GJA-GAE-AX?

No direct pin-compatible or functionally identical successor has been designated by Renesas for the UPD70F3378M2GJA-GAE-AX. While Renesas offers newer V850-based devices (e.g., V850E/IA2) and RA-family Arm-based MCUs, none replicate the exact feature set, package, or qualification of the UPD70F3378M2GJA-GAE-AX. Customers seeking long-term supply should rely on existing inventory and Aetrix Electronics' lifecycle coordination services.