Renesas UPD70F3914GC(R)-UEU-AX

Overview

UPD70F3914GC(R)-UEU-AX from Renesas Electronics is a 32-bit V850E/IG4-H microcontroller featuring a 48 MHz CPU clock, 512 KB on-chip Flash memory, 64 KB RAM, and integrated peripherals including two 16-bit timer/event counters (TAA/TAB), UART, I²C, and CAN 2.0B controller. It operates from 2.7–5.5 V and targets industrial control modules requiring deterministic real-time response and functional safety support.

For engineers reviewing the UPD70F3914GC(R)-UEU-AX datasheet, UPD70F3914GC(R)-UEU-AX pinout, UPD70F3914GC(R)-UEU-AX application, or UPD70F3914GC(R)-UEU-AX equivalent, key selection criteria include its V850E ISA compliance, CAN interface integration, Flash endurance (100K write/erase cycles), operating temperature range (−40°C to +85°C), and QFP-100 package with 78 general-purpose I/O pins.

Technical Context

The UPD70F3914GC(R)-UEU-AX implements the V850E1 CPU core with 5-stage pipeline, supports supervisor/user mode operation, and includes on-chip debug functionality via JTAG interface. Its clock system integrates PLL with 1–8× multiplication and selectable input sources (crystal, external clock, or internal RC).

Peripheral subsystems include dual 16-bit timer/event counters with PWM, capture, and pulse-width measurement modes; one UART channel with LIN support; one I²C bus interface; and one CAN 2.0B controller with 32 message objects and programmable FIFO. Memory protection unit (MPU) and watchdog timer are included for system robustness.

Key Specifications

Pinout & Package

UPD70F3914GC(R)-UEU-AX is housed in a 100-pin Low-Profile Quad Flat Package (LQFP) with 0.5 mm lead pitch, JEDEC standard footprint, and exposed thermal pad for enhanced heat dissipation in industrial applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with UPD70F3914GC(R)-UEU-AX, R5F566TEADFP offers higher compute throughput but lacks integrated CAN and increases system complexity, while UPD70F3922GC-UEU-AX provides seamless scalability within the V850E family with identical package and toolchain support.

Availability

UPD70F3914GC(R)-UEU-AX is available at Aetrix Electronics and suitable for industrial automation controllers, automotive body electronics, and smart metering systems requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant manufacturing.

Supply support for UPD70F3914GC(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 industrial, automotive, and infrastructure markets.

The UPD70F3914GC(R)-UEU-AX belongs to the V850E/IG4-H microcontroller family, designed specifically for cost-sensitive, real-time industrial control applications requiring CAN connectivity, deterministic interrupt latency, and extended temperature operation.

FAQ

What is the maximum operating frequency of the UPD70F3914GC(R)-UEU-AX?

The UPD70F3914GC(R)-UEU-AX operates at a maximum CPU clock frequency of 48 MHz, achieved using its on-chip PLL with configurable multiplication factor (1× to 8×) and external crystal or clock input. This frequency is guaranteed across the full −40°C to +85°C temperature range and 2.7–5.5 V supply voltage, enabling deterministic real-time execution for industrial control loops.

Does the UPD70F3914GC(R)-UEU-AX include an integrated CAN controller?

Yes, the UPD70F3914GC(R)-UEU-AX integrates a single CAN 2.0B-compliant controller supporting bit rates up to 1 Mbps, 32 message objects, and hardware-based filtering and retransmission. It requires only an external CAN transceiver (e.g., TJA1042) for physical layer compliance - no additional MCU or protocol co-processor is needed for basic CAN network participation.

What debug interface does the UPD70F3914GC(R)-UEU-AX support?

The UPD70F3914GC(R)-UEU-AX supports IEEE 1149.1 JTAG for full on-chip debugging, including halt/resume, register inspection, memory read/write, and hardware breakpoints. It is compatible with Renesas E2 emulator and third-party JTAG tools that implement the V850E debug specification - no SWD or proprietary debug port is used.

Is the UPD70F3914GC(R)-UEU-AX pin-compatible with other V850E/IG4-H devices?

Yes, the UPD70F3914GC(R)-UEU-AX shares the same 100-pin LQFP package and pin assignment with other V850E/IG4-H members including μPD70F3919, μPD70F3920, and μPD70F3921. Pin functions, power domains, and peripheral mappings are consistent across this subgroup, enabling hardware reuse and firmware portability within the family.

What is the Flash memory endurance specification for the UPD70F3914GC(R)-UEU-AX?

The UPD70F3914GC(R)-UEU-AX specifies 100,000 write/erase cycles for its 512 KB on-chip Flash memory, validated per JEDEC JESD22-A117. Each 128-byte page can be independently erased, and wear leveling must be implemented in application firmware. Data retention is guaranteed for 20 years at +85°C or 100 years at +25°C ambient.