Renesas UPD70F3765GF-GAT-AX

Overview

UPD70F3765GF-GAT-AX from Renesas Electronics is a 32-bit V850ES/JG3-H microcontroller with 512 KB on-chip Flash, 48 KB RAM, and integrated 16-bit timer/event counters, UART, I²C, and CAN 2.0B controller - used in industrial motor control and factory automation systems requiring deterministic real-time response.

For engineers reviewing the UPD70F3765GF-GAT-AX datasheet, UPD70F3765GF-GAT-AX pinout, UPD70F3765GF-GAT-AX application, or UPD70F3765GF-GAT-AX equivalent, key selection criteria include its 48 MHz max CPU frequency, 100-pin LQFP package, CAN interface compliance, Flash endurance (100k write/erase cycles), and support for on-chip debug via JTAG.

Technical Context

The UPD70F3765GF-GAT-AX implements the V850ES RISC CPU core with five-stage pipeline, supporting both little-endian and big-endian data access modes. It integrates a PLL-based clock generation unit enabling stable 48 MHz operation from external 4–20 MHz crystals or ceramic resonators.

Its peripheral set includes three 16-bit timer/event counters (TAA/TAB/TAC) with input capture, output compare, and PWM generation; dual UARTs with FIFO and LIN support; one I²C bus interface; and a full-CAN 2.0B controller with 32 message objects and programmable bit timing.

Key Specifications

Pinout & Package

UPD70F3765GF-GAT-AX is housed in a 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per Renesas Hardware User's Manual Rev.5.10, Section 1.5 (Pin Configuration) and Section 2.1 (List of Pin Functions).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F57016ADFP, UPD70F3765GF-GAT-AX delivers CAN 2.0B and higher Flash density at the cost of higher active current; versus UPD70F3766GF-GAT-AX, it trades 256 KB Flash capacity for lower unit cost while retaining identical real-time performance and peripheral compatibility.

Availability

UPD70F3765GF-GAT-AX is available at Aetrix Electronics and suitable for industrial motor control, factory automation PLCs, and building HVAC controllers requiring stable component supply across multi-year production cycles.

Supply support for UPD70F3765GF-GAT-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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power devices for industrial, automotive, and infrastructure markets.

The V850ES/JG3-H product line was designed for deterministic real-time control in harsh industrial environments, emphasizing CAN integration, Flash reliability, and long-term supply stability for factory automation and motor drive applications.

FAQ

What is the maximum operating frequency of the UPD70F3765GF-GAT-AX?

The UPD70F3765GF-GAT-AX operates at a maximum CPU frequency of 48 MHz, achieved using its on-chip PLL with external crystal input (4–20 MHz range). This frequency is guaranteed across the full industrial temperature range (−40°C to +85°C) and supply voltage (2.7–5.5 V), enabling deterministic execution of real-time control loops with sub-microsecond timing precision.

Does the UPD70F3765GF-GAT-AX include a CAN controller?

Yes, the UPD70F3765GF-GAT-AX integrates a full CAN 2.0B controller compliant with ISO 11898-1, supporting bit rates up to 1 Mbps and featuring 32 independent message objects with programmable acceptance filtering. It requires an external CAN transceiver (e.g., SN65HVD230) for physical layer connection but handles all protocol-layer tasks including arbitration, error handling, and retransmission automatically.

What debug interfaces does the UPD70F3765GF-GAT-AX support?

The UPD70F3765GF-GAT-AX supports IEEE 1149.1 JTAG-based on-chip debug (OCDS) via dedicated TMS/TCK/TDI/TDO pins. It is fully compatible with Renesas QB-V850MINI and QB-MINI2 emulators, enabling real-time breakpoint setting, register inspection, memory read/write, and flash programming without requiring additional debug circuitry on the target board.

Is the UPD70F3765GF-GAT-AX pin-compatible with other V850ES/JG3-H devices?

Yes, the UPD70F3765GF-GAT-AX shares identical 100-pin LQFP packaging and pinout with other members of the V850ES/JG3-H family, including UPD70F3760GF-GAT-AX and UPD70F3766GF-GAT-AX. This allows direct substitution within the same footprint for Flash size scaling or minor feature adjustments without PCB redesign.

What is the Flash endurance specification for the UPD70F3765GF-GAT-AX?

The UPD70F3765GF-GAT-AX specifies 100,000 write/erase cycles for its 512 KB on-chip Flash memory, validated per Renesas' qualification standards. Each sector can be erased independently, and wear leveling must be implemented in firmware if frequent updates are required - for example, in data logging applications where Flash is used as nonvolatile storage.