Renesas UPD70F3804GA-GAM-AX

Overview

UPD70F3804GA-GAM-AX from Renesas Electronics is a 32-bit V850ES/JG3-L microcontroller with on-chip USB 2.0 full-speed controller, 512 KB Flash memory, and 64 KB RAM. It operates at up to 40 MHz, supports 5V-tolerant I/Os, and targets embedded control in industrial automation and USB-connected peripherals.

For engineers reviewing the UPD70F3804GA-GAM-AX datasheet, UPD70F3804GA-GAM-AX pinout, UPD70F3804GA-GAM-AX application, or UPD70F3804GA-GAM-AX equivalent, key selection criteria include USB controller integration, Flash endurance (100K write/erase cycles), operating voltage range (2.7–5.5 V), and industrial-grade temperature support (−40°C to +85°C).

Technical Context

The UPD70F3804GA-GAM-AX implements the V850ES CPU core with 3-stage pipeline, supporting both little-endian and big-endian data access. It integrates a programmable PLL for clock generation, configurable wait-state control for external memory interfacing, and dedicated USB PHY with suspend/resume detection logic.

Peripheral subsystems include 16-bit timers (TMP, TPU), serial interfaces (UART, CSI, I²C), ADC (10-bit, 16-channel), and DMA controller with 8 channels. All peripherals are memory-mapped and accessible via APB-like bus architecture with priority arbitration.

Key Specifications

Pinout & Package

UPD70F3804GA-GAM-AX is housed in a 100-pin LQFP package (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignment follows V850ES/JG3-L standard layout, supporting multiplexed functions across ports P0–P9, CM, CT, DH, DL, and dedicated USB, reset, clock, and debug pins.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller-with-integrated-USB applications.

Compared with R5F566TEADFP and UPD70F3796GA-GAM-AX, the UPD70F3804GA-GAM-AX offers the largest on-chip Flash (512 KB) and retains full USB PHY integration - making it optimal for feature-rich USB device firmware with local storage and update capability.

Availability

UPD70F3804GA-GAM-AX is available at Aetrix Electronics and suitable for industrial HMI panels, USB data loggers, and programmable logic relays requiring stable component supply and long-term production continuity.

Supply support for UPD70F3804GA-GAM-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, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The UPD70F3804GA-GAM-AX belongs to the V850ES/JG3-L microcontroller product line, designed specifically for cost-sensitive, USB-enabled industrial control applications requiring robustness, code density, and deterministic real-time response.

FAQ

What is the maximum operating frequency of the UPD70F3804GA-GAM-AX?

The UPD70F3804GA-GAM-AX supports a maximum system clock frequency of 40 MHz. This is achieved using the on-chip PLL to multiply an external crystal (e.g., 8 MHz) or internal oscillator signal. The V850ES core executes instructions at 1.25 DMIPS per MHz, delivering ~50 DMIPS at full speed. All peripherals, including USB and timers, operate synchronously with this clock domain unless explicitly gated.

Does the UPD70F3804GA-GAM-AX include an integrated USB physical layer (PHY)?

Yes, the UPD70F3804GA-GAM-AX includes a fully integrated USB 2.0 full-speed (12 Mbps) PHY. It provides differential USBDP and USBDM pins with internal 1.5 kΩ pull-up on USBDP for device enumeration, eliminating the need for external transceivers. The USB controller supports all four transfer types (control, interrupt, bulk, isochronous) and handles descriptor parsing and endpoint management in hardware.

What package type and pin count does the UPD70F3804GA-GAM-AX use?

The UPD70F3804GA-GAM-AX is supplied in a 100-pin LQFP package (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad. This package matches the pinout of other V850ES/JG3-L family members such as UPD70F3794 and UPD70F3796, enabling drop-in compatibility in shared PCB designs where Flash size requirements differ.

Is the UPD70F3804GA-GAM-AX qualified for industrial temperature operation?

Yes, the UPD70F3804GA-GAM-AX is rated for operation from −40°C to +85°C and classified by Renesas as a Standard-grade device. It meets industrial environmental requirements per Renesas quality grading guidelines and is intended for applications including factory automation, test equipment, and building control systems - not safety-critical transportation or medical systems.

Can the UPD70F3804GA-GAM-AX execute code directly from its on-chip Flash memory?

Yes, the UPD70F3804GA-GAM-AX supports XIP (eXecute-In-Place) from its 512 KB on-chip Flash memory. The V850ES core fetches instructions directly from Flash without copying to RAM, reducing boot time and memory overhead. Flash access includes configurable wait states and prefetch buffer to maintain performance at 40 MHz, and supports secure erase and lock-bit protection for firmware IP.