Renesas UPD70F3378M1GJA-GAE-AX

Overview

UPD70F3378M1GJA-GAE-AX from NEC Electronics is a 32-bit V850ES/FF3 single-chip microcontroller featuring 256 KB Flash memory, 16 KB RAM, 144-pin LQFP package, CAN 2.0B interface, and integrated A/D converter with 12-bit resolution and 16 channels. It operates across -40°C to +85°C and supports dual voltage domains (EVDD/BVDD) for mixed-signal applications in industrial control systems.

For engineers reviewing the UPD70F3378M1GJA-GAE-AX datasheet, UPD70F3378M1GJA-GAE-AX pinout, UPD70F3378M1GJA-GAE-AX application, or UPD70F3378M1GJA-GAE-AX equivalent, this page delivers verified electrical specs, validated pin functions, confirmed CAN timing compliance, real-world use scenarios, and two technically documented alternative microcontrollers for migration planning.

Technical Context

The UPD70F3378M1GJA-GAE-AX implements the V850ES CPU core with 32-bit RISC architecture, supporting up to 32 MHz system clock via external crystal (4–16 MHz) or internal PLL. Its clock generator includes main/sub oscillators, internal RC oscillator (240 kHz), and SSCG for EMI reduction.

It integrates peripheral modules including CAN 2.0B controller with 32 message objects, UART, I²C, CSI, 16-channel 12-bit A/D converter with programmable sampling time, POC (Power-On Clear), LVI (Low-Voltage Interrupt), and RAM retention flag - all operating under dual power supply rails (EVDD = 3.3–5.5 V, BVDD = 3.3–5.5 V).

Key Specifications

Pinout & Package

UPD70F3378M1GJA-GAE-AX is housed in a 144-pin LQFP (FJ3 package), measuring 20 mm × 20 mm × 1.4 mm, with 0.5 mm pitch and exposed thermal pad. Pin assignment follows V850ES/FF3 series grouping: Group 1x (EVDD-supplied I/O), Group 2x (CMOS peripherals), Group 3x (BVDD-supplied I/O), Group 4 (AVREF0 analog inputs), Group 7 (X1/X2 crystal terminals).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F566TEADFP and MB9BF516RPMC, UPD70F3378M1GJA-GAE-AX offers balanced integration of CAN, analog, and Flash capacity in a mature, production-proven 144-pin LQFP footprint - making it optimal for sustaining existing V850-based designs while maintaining supply continuity.

Availability

UPD70F3378M1GJA-GAE-AX is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, smart energy metering terminals, and factory automation sensor hubs requiring stable component supply across extended product lifecycles.

Supply support for UPD70F3378M1GJA-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, memory, and analog ICs for industrial, automotive, and communications markets.

The V850ES/FF3 product line - including UPD70F3378M1GJA-GAE-AX - was engineered for deterministic real-time control in safety-critical embedded systems requiring CAN connectivity, high-precision analog acquisition, and long-term reliability under harsh environmental conditions.

FAQ

What is the maximum operating frequency of the UPD70F3378M1GJA-GAE-AX?

The UPD70F3378M1GJA-GAE-AX supports a maximum system clock frequency of 32 MHz when using the PLL with an external 4–16 MHz crystal. Without PLL, the maximum frequency is limited to the crystal frequency or internal RC oscillator (240 kHz). AC characteristics in the datasheet specify timing validity up to 32 MHz for all peripherals including CAN, UART, and A/D converter.

Does the UPD70F3378M1GJA-GAE-AX include an on-chip voltage regulator?

Yes, the UPD70F3378M1GJA-GAE-AX includes an integrated voltage regulator that generates a stable 2.5 V output (VRO) for internal analog circuitry. This eliminates the need for an external LDO in many applications. The regulator requires a 4.7 µF capacitor on the REGC terminal and stabilizes within 1 ms after VDD reaches 3.3 V, as specified in Section 2.4 of the datasheet.

Is the UPD70F3378M1GJA-GAE-AX pin-compatible with other V850ES/FF3 family members?

No, the UPD70F3378M1GJA-GAE-AX is not pin-compatible with smaller-package variants like the 80-pin FF3 (e.g., µPD70F3373). It belongs to the FJ3 144-pin package group and shares pinout structure only with other FJ3 devices such as µPD70F3380 and µPD70F3381. Pin grouping (e.g., EVDD/BVDD domains, AVREF0 analog inputs) is consistent across the FJ3 family, but exact pin assignments differ from FE3/FF3/FG3 packages.

What are the supported A/D reference voltage options for the UPD70F3378M1GJA-GAE-AX?

The UPD70F3378M1GJA-GAE-AX supports AVREF0 as the primary A/D reference voltage, configurable between 3.3 V and 5.5 V. Operation of the A/D converter is guaranteed only when AVREF0 ≥ 4.0 V; below that threshold, the ADA0CE bit must be cleared to disable conversion. AVREF1 is not used by this device - it is reserved for FK3-series devices with additional analog domains.

Does the UPD70F3378M1GJA-GAE-AX support CAN FD or only classical CAN 2.0B?

The UPD70F3378M1GJA-GAE-AX supports only CAN 2.0B (Classical CAN) with bit rates up to 1 Mbps. It does not implement CAN FD features such as flexible data-rate, extended data length (up to 64 bytes), or CRC enhancements. The CAN controller conforms to ISO 11898-1:2003 and supports both standard (11-bit) and extended (29-bit) identifier formats with full mailbox arbitration.