Renesas UPD70F3914GF(R)-GAS-AX

Overview

UPD70F3914GF(R)-GAS-AX from Renesas Electronics is a 32-bit V850E/IG4-H microcontroller featuring a 64 MHz CPU clock, 512 KB on-chip Flash memory, 48 KB RAM, and integrated peripherals including 16-bit timers (TAA/TAB), UART, I²C, and CAN 2.0B controller. It operates from 2.7–3.6 V and targets industrial motor control and embedded automation systems requiring deterministic real-time response.

For engineers reviewing the UPD70F3914GF(R)-GAS-AX datasheet, UPD70F3914GF(R)-GAS-AX pinout, UPD70F3914GF(R)-GAS-AX application, or UPD70F3914GF(R)-GAS-AX equivalent, key selection criteria include its V850E ISA compliance, CAN interface support, Flash endurance (100K write/erase cycles), and industrial-grade temperature range (−40°C to +85°C).

Technical Context

The UPD70F3914GF(R)-GAS-AX implements the V850E1 CPU core with five-stage pipeline execution, supporting both little-endian and big-endian data access. It integrates a PLL-based clock generator enabling stable 64 MHz operation from a 4–20 MHz crystal input, and includes a dedicated CAN controller with message object buffers and automatic retransmission logic.

Peripheral subsystems are memory-mapped and accessible via APB bus; interrupt handling uses a 32-level priority vector table with nested interrupt support. The device supports in-circuit debugging via JTAG interface and includes hardware watchdog timer with independent clock source for system safety monitoring.

Key Specifications

Pinout & Package

UPD70F3914GF(R)-GAS-AX is housed in a 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch) package with exposed thermal pad. Pin assignments follow Renesas' standard V850E/IG4-H pinout layout, supporting multiplexed functions across ports P0–P9 and DL.

Key Features

Applications

Equivalent & Alternatives

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

Compared with UPD70F3914GF(R)-GAS-AX, R5F566TEADFP offers greater processing headroom but adds design complexity via external CAN, while UPD70F3375GC-UEU-AX reduces memory and speed to meet lower-tier industrial control needs - both require PCB redesign due to different pinouts and package sizes.

Availability

UPD70F3914GF(R)-GAS-AX is available at Aetrix Electronics and suitable for industrial motor drive, building automation controller, and programmable logic controller (PLC) I/O module applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for UPD70F3914GF(R)-GAS-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 UPD70F3914GF(R)-GAS-AX belongs to the V850E/IG4-H microcontroller family, designed specifically for deterministic real-time control in industrial automation, motor drives, and factory equipment where reliability, CAN integration, and long product lifecycle are critical.

FAQ

What is the maximum operating frequency of the UPD70F3914GF(R)-GAS-AX?

The UPD70F3914GF(R)-GAS-AX achieves a maximum CPU clock frequency of 64 MHz using its on-chip PLL, which multiplies an external 4–20 MHz crystal input. This frequency is fully supported across the full industrial temperature range (−40°C to +85°C) and supply voltage range (2.7–3.6 V), with timing validated per Renesas' Electrical Specifications chapter.

Does the UPD70F3914GF(R)-GAS-AX include a built-in CAN transceiver?

No, the UPD70F3914GF(R)-GAS-AX integrates a CAN 2.0B protocol controller only - it requires an external CAN physical layer transceiver (e.g., SN65HVD230) connected to CANTX/CANRX pins. The controller supports programmable bit timing, 32 message objects, and automatic error handling, but does not drive the differential bus directly.

What debug interface does the UPD70F3914GF(R)-GAS-AX support?

The UPD70F3914GF(R)-GAS-AX supports IEEE 1149.1 JTAG for boundary scan and on-chip debugging. It is compatible with Renesas' E2 emulator and third-party tools supporting V850E target interfaces. Real-time trace and hardware breakpoints are enabled without code instrumentation or performance impact on the UPD70F3914GF(R)-GAS-AX core.

Is the UPD70F3914GF(R)-GAS-AX pin-compatible with other V850E/IG4-H devices?

No, the UPD70F3914GF(R)-GAS-AX is not pin-compatible with other V850E/IG4-H variants such as μPD70F3919 or μPD70F3920. While sharing the same 100-pin LQFP package outline, pin functions differ significantly across the family - for example, CAN signal assignment and peripheral multiplexing vary by part number, requiring unique PCB layout for UPD70F3914GF(R)-GAS-AX.

What is the Flash memory endurance specification for the UPD70F3914GF(R)-GAS-AX?

The UPD70F3914GF(R)-GAS-AX specifies 100,000 write/erase cycles for its 512 KB on-chip Flash memory, verified under standard industrial conditions (25°C, VDD = 3.3 V). Endurance is maintained across the full operating temperature range, and sector erase granularity supports robust firmware update strategies without compromising longevity.