Renesas UPD70F3835GC(R)-UEU-AX

Overview

UPD70F3835GC(R)-UEU-AX from Renesas is a 32-bit V850ES/JG3-E single-chip microcontroller with 128 KB on-chip Flash, 48 KB RAM (including 16 KB data RAM), 62 I/O lines (35 V-tolerant), Ethernet controller, USB function controller, 10-bit A/D converter (10 channels), and integrated CAN, UARTC (4 ch), CSIF (5 ch), and I²C (3 ch) interfaces. It operates at up to 50 MHz (20 ns min instruction time) and targets networked industrial control and embedded gateway applications.

For engineers reviewing the UPD70F3835GC(R)-UEU-AX datasheet, UPD70F3835GC(R)-UEU-AX pinout, UPD70F3835GC(R)-UEU-AX application, or UPD70F3835GC(R)-UEU-AX equivalent, key selection criteria include its 100-pin LQFP package, Ethernet + USB + CAN integration, real-time timer subsystem (TAA/TAB/TMM/TMT), and support for HALT/IDLE/STOP power-save modes in 2.85–3.6 V operation.

Technical Context

The UPD70F3835GC(R)-UEU-AX implements the V850ES architecture with 32 × 32-bit general-purpose registers, hardware 16×16→32-bit multiplier, saturation arithmetic, and bit manipulation instructions. Its clock system supports PLL mode (fXX = 24–50 MHz from 3–6.25 MHz fX) and subclock (32.768 kHz) for RTC.

It integrates a full Ethernet MAC/PHY interface (MII/RMII), USB 2.0 full-speed function controller, and a 4-channel DMA controller targeting on-chip peripherals and RAM. The interrupt controller supports 61 internal sources plus 22 external interrupts (19 release-capable from STOP mode), including NMI and dedicated key-return inputs.

Key Specifications

Pinout & Package

UPD70F3835GC(R)-UEU-AX is housed in a 100-pin plastic LQFP (fine pitch, 14 × 14 mm) package with exposed thermal pad (not electrically connected). Pin functions include dual Ethernet PHY interface (P1RXD0–P1RXD3, P1TXD0–P1TXD3, P1RXCLK, P1TXCLK, etc.), USB differential pair (UDMF/UDPF), CAN signals (CRXD0/CTXD0), and multiplexed peripheral I/O across Ports 0, 2–5, 7, 9, and DL.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7F7010283AFP#AA0, UPD70F3835GC(R)-UEU-AX delivers integrated Ethernet+USB+CAN in a single chip for gateway-class functionality, whereas MB9BF506NPMC-G-S2 offers ARM compatibility and CAN FD at the cost of requiring external PHY/transceiver components and more complex toolchain integration.

Availability

UPD70F3835GC(R)-UEU-AX is available at Aetrix Electronics and suitable for industrial Ethernet gateways, networked PLC controllers, USB-enabled test equipment, and smart home hubs requiring stable component supply and long-term manufacturability.

Supply support for UPD70F3835GC(R)-UEU-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 is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The V850ES/JG3-E product line-including UPD70F3835GC(R)-UEU-AX-is designed for high-integration embedded networking applications requiring deterministic real-time control, multi-protocol connectivity, and industrial-grade reliability.

FAQ

What is the maximum operating frequency and minimum instruction cycle time for the UPD70F3835GC(R)-UEU-AX?

The UPD70F3835GC(R)-UEU-AX achieves a maximum operating frequency of 50 MHz in PLL mode, delivering a minimum instruction execution time of 20 ns. This timing is guaranteed under conditions of 2.85–3.6 V supply and −40 to +85°C ambient temperature, with main clock input (fX) between 3–6.25 MHz multiplied by 8 internally to generate fXX.

Does the UPD70F3835GC(R)-UEU-AX include an integrated Ethernet PHY or require an external one?

The UPD70F3835GC(R)-UEU-AX integrates a full Ethernet MAC and PHY compliant with IEEE 802.3u, supporting both MII and RMII interfaces. It drives standard Ethernet magnetics directly-no external PHY IC is needed. Pins P1RXD0–P1RXD3, P1TXD0–P1TXD3, P1RXCLK, P1TXCLK, P1RXER, P1TXER, P1RXDV, P1TXEN, P1COL, P1CRS, P1MDC, and P1MDIO constitute the complete physical layer interface.

How much Flash and RAM does the UPD70F3835GC(R)-UEU-AX contain, and how is RAM allocated?

The UPD70F3835GC(R)-UEU-AX contains 128 KB of on-chip Flash memory and 48 KB of on-chip RAM. Of that RAM, 16 KB is designated as data RAM (accessible for variables and stack), while the remaining 32 KB serves as general-purpose RAM usable for code, buffers, or heap-configurable via linker script and memory map settings in the V850ES architecture.

Which serial communication interfaces are supported on the UPD70F3835GC(R)-UEU-AX, and how many channels does each have?

The UPD70F3835GC(R)-UEU-AX supports UARTC (4 channels), CSIF (5 channels), I²C (3 channels), CAN (1 channel), USB function controller (1 full-speed channel), and Ethernet controller (1 channel). All are implemented in hardware with dedicated registers and DMA support-no software bit-banging required for basic operation.

What debug interface does the UPD70F3835GC(R)-UEU-AX use, and which tools are officially supported?

The UPD70F3835GC(R)-UEU-AX uses the on-chip debug interface with dedicated pins DRST, DMS, DDI, DCK, and DDO. It is fully supported by Renesas' MINICUBE2 debugger and compatible with the E2 studio IDE. No JTAG adapter is needed-the interface operates natively over the 5-pin debug header, enabling full breakpoint, watchpoint, and real-time trace capabilities.