Renesas UPD70F3837GC(R)-UEU-AX

Overview

UPD70F3837GC(R)-UEU-AX from Renesas is a 32-bit V850ES/JG3-E single-chip microcontroller with 256 KB Flash, 48 KB RAM (including 16 KB data RAM), 62 I/O lines (35 V-tolerant), 10-bit A/D converter (10 channels), Ethernet controller, USB function controller, CAN controller, and real-time counter. It operates at 2.85–3.6 V and supports industrial temperature range (−40 to +85°C), targeting networked embedded systems requiring integrated connectivity.

For engineers reviewing the UPD70F3837GC(R)-UEU-AX datasheet, UPD70F3837GC(R)-UEU-AX pinout, UPD70F3837GC(R)-UEU-AX application, or UPD70F3837GC(R)-UEU-AX equivalent, key selection criteria include its 100-pin LQFP package, dual CAN/USB/Ethernet interface support, 50 MHz max clock speed, and JG3-E-specific peripheral set including 5-channel TAA timer, motor control capability, and 4-channel interval timer M.

Technical Context

The UPD70F3837GC(R)-UEU-AX implements the V850ES architecture with 32-bit barrel shifter, hardware 16×16→32 multiplier, saturation arithmetic, and bit manipulation instructions. Its CPU executes instructions in one clock cycle at 50 MHz (20 ns min), supported by 64 MB linear address space and on-chip debug via MINICUBE2.

It integrates dedicated peripherals for real-time control: 16-bit timer/event counter AA (5 channels), AB (1 channel), interval timer M (4 channels), encoder timer T (1 channel), and real-time output function (6 bits). The Ethernet controller complies with IEEE 802.3, and CAN supports ISO 11898-1 with one channel.

Key Specifications

Pinout & Package

UPD70F3837GC(R)-UEU-AX is housed in a 100-pin plastic LQFP (fine pitch, 14 × 14 mm) package with exposed thermal pad. Pin functions are defined per Renesas R01DS0029EJ0001 Rev.0.01, with full multiplexing support across ports P0–P9 and PDL.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F566TEADFP and MB9BF516RPMC, UPD70F3837GC(R)-UEU-AX uniquely combines native CAN, USB full-speed, and Ethernet MAC in a single 100-pin LQFP - enabling three-bus connectivity without external transceivers or bridge ICs, critical for space-constrained industrial gateways.

Availability

UPD70F3837GC(R)-UEU-AX is available at Aetrix Electronics and suitable for industrial Ethernet gateways, automotive diagnostic tools, networked home audio controllers, and smart printer mainboards requiring stable component supply and long-term lifecycle support.

Supply support for UPD70F3837GC(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 Corporation 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 delivers high-integration 32-bit MCUs optimized for real-time industrial control, networked appliances, and automotive body electronics where deterministic timing, multi-protocol connectivity, and extended temperature operation are essential.

FAQ

What is the maximum operating frequency of the UPD70F3837GC(R)-UEU-AX?

The UPD70F3837GC(R)-UEU-AX achieves a maximum system clock frequency of 50 MHz using its on-chip PLL (configured for 8× multiplication of a 3–6.25 MHz crystal input). At this speed, minimum instruction execution time is 20 ns, enabling hard real-time response for motor control and Ethernet packet processing tasks within the UPD70F3837GC(R)-UEU-AX.

Does the UPD70F3837GC(R)-UEU-AX include an integrated Ethernet PHY?

No, the UPD70F3837GC(R)-UEU-AX integrates only the Ethernet MAC layer compliant with IEEE 802.3. It requires an external PHY chip (e.g., DP83848) connected via RMII interface using dedicated EVDD/EVSS pins and 4-bit parallel data lines (P1RXD0–P1RXD3 and P1TXD0–P1TXD3). This separation allows flexible PHY selection while maintaining signal integrity in the UPD70F3837GC(R)-UEU-AX design.

How many CAN channels does the UPD70F3837GC(R)-UEU-AX support?

The UPD70F3837GC(R)-UEU-AX supports exactly one CAN 2.0B-compliant controller channel, accessible via dedicated CRXD0 (CAN receive) and CTXD0 (CAN transmit) pins. This channel is shared with other serial functions on P36/P37 but is fully functional for automotive diagnostics, industrial fieldbus, and ECU communication when configured in CAN mode - a core capability of the UPD70F3837GC(R)-UEU-AX.

What debug interfaces are supported by the UPD70F3837GC(R)-UEU-AX?

The UPD70F3837GC(R)-UEU-AX supports on-chip debugging via the MINICUBE2 emulator using standard debug pins (DDI, DDO, DCK, DRST, DMS). It does not support JTAG; instead, it uses Renesas' proprietary FINE interface for flash programming and real-time trace. This debug infrastructure is fully documented in the V850ES Architecture User's Manual (U15943E) and validated for use with the UPD70F3837GC(R)-UEU-AX.

Is the UPD70F3837GC(R)-UEU-AX pin-compatible with other V850ES/JG3-E variants like UPD70F3836GC-UEU-AX?

Yes, the UPD70F3837GC(R)-UEU-AX is fully pin-compatible with all other 100-pin LQFP V850ES/JG3-E variants (UPD70F3834GC-UEU-AX through UPD70F3836GC-UEU-AX), sharing identical pinout, electrical characteristics, and package dimensions. Differences are limited to internal Flash (256 KB vs. 64/128 KB) and RAM (48 KB vs. 16/32 KB), allowing drop-in replacement during development or production ramp - a verified feature of the UPD70F3837GC(R)-UEU-AX family.