Renesas UPD70F3454F1(R)-DA9-A

Overview

UPD70F3454F1(R)-DA9-A from Renesas Electronics is a 32-bit V850E/IG3 single-chip microcontroller featuring 512 KB on-chip Flash memory, 48 KB RAM, and operating at up to 40 MHz. It integrates UARTA/B, CSIB, I²C, 12-bit ADC (16 channels), six 16-bit timers, and a watchdog timer. Designed for industrial control systems requiring deterministic real-time response and robust peripheral integration.

For engineers reviewing the UPD70F3454F1(R)-DA9-A datasheet, UPD70F3454F1(R)-DA9-A pinout, UPD70F3454F1(R)-DA9-A application, or UPD70F3454F1(R)-DA9-A equivalent, key selection considerations include its V850E core architecture, 100-pin LQFP package, Flash endurance (100k write/erase cycles), industrial temperature range (−40°C to +85°C), and integrated low-voltage detector with reset functionality.

Technical Context

The UPD70F3454F1(R)-DA9-A implements the V850E RISC CPU core with 32-bit data path, five-stage pipeline, and Harvard architecture. It supports multiple power-saving modes including HALT, STOP, and SNOOZE, controlled via system control registers and clock gating logic.

Peripheral integration includes dual UARTs with FIFO support, CSIB (Renesas proprietary serial interface), I²C-compatible bus controller, and three independent 16-bit timer groups (Timer M, Timer AA/AB, Timer Q) enabling PWM generation, input capture, and output compare functions with programmable prescalers and dead-time insertion.

Key Specifications

Pinout & Package

UPD70F3454F1(R)-DA9-A is housed in a 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch) package with exposed thermal pad. Pin assignments follow the V850E/IG3 standard layout defined in Renesas User's Manual U18279EJ3V0UD.

Key Features

Applications

Equivalent & Alternatives

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

Compared with UPD70F3454F1(R)-DA9-A, UPD70F3453F1(R)-DA9-A offers cost reduction through memory downscaling while retaining identical peripheral sets and pinout; R5F566TEADFP delivers significantly higher compute throughput and safety features but requires PCB redesign and toolchain migration.

Availability

UPD70F3454F1(R)-DA9-A is available at Aetrix Electronics and suitable for industrial motor control, building automation systems, and factory floor PLC modules requiring stable component supply and long-term manufacturability.

Supply support for UPD70F3454F1(R)-DA9-A 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 V850E/IG3 product line, including UPD70F3454F1(R)-DA9-A, was engineered for deterministic real-time control in resource-constrained industrial equipment where reliability, low power, and peripheral integration are critical.

FAQ

What is the maximum operating frequency of the UPD70F3454F1(R)-DA9-A?

The UPD70F3454F1(R)-DA9-A operates at a maximum frequency of 40 MHz when supplied with 2.7 V to 5.5 V and within the −40°C to +85°C ambient temperature range. This frequency is achieved using the on-chip PLL with external crystal input (1–20 MHz). The V850E core executes most instructions in a single cycle at this speed, enabling sub-microsecond interrupt latency and tight control loop timing for UPD70F3454F1(R)-DA9-A–based systems.

Does the UPD70F3454F1(R)-DA9-A support in-system programming (ISP)?

Yes, the UPD70F3454F1(R)-DA9-A supports in-application programming (IAP) of its 512 KB on-chip SuperFlash® memory via the on-chip debug interface or UART bootloader. Firmware updates can be performed without removing the device from the target board, provided the application reserves protected Flash sectors for the bootloader and validates checksums before committing writes. UPD70F3454F1(R)-DA9-A requires no external programming voltage - all operations use the main VDD supply.

What development tools are compatible with the UPD70F3454F1(R)-DA9-A?

The UPD70F3454F1(R)-DA9-A is supported by Renesas' legacy toolchain including QB-MINI2 on-chip debug emulator, CA850 C compiler, and ID850QB integrated debugger. Third-party IDEs with V850E plugin support (e.g., Eclipse-based toolchains) can also be used. Renesas-provided sample programs for UART, I²C, ADC, and timer functions - documented in Application Notes U18723E–U18739E - are directly applicable to UPD70F3454F1(R)-DA9-A hardware.

How does the low-voltage detector (LVD) function in the UPD70F3454F1(R)-DA9-A?

The UPD70F3454F1(R)-DA9-A includes a configurable low-voltage detector with four selectable threshold levels (2.7 V, 3.3 V, 4.0 V, 4.5 V) and dual outputs: an interrupt request and a hardware reset signal. When VDD drops below the selected threshold, the LVD asserts reset after a programmable delay (1–1024 cycles), preventing corrupted Flash writes or register misconfiguration. This feature ensures deterministic fail-safe behavior in UPD70F3454F1(R)-DA9-A–based industrial controllers during power transients.

Is the UPD70F3454F1(R)-DA9-A pin-compatible with other V850E/IG3 family members?

Yes, the UPD70F3454F1(R)-DA9-A shares identical pinout, package (100-pin LQFP), and peripheral mapping with other V850E/IG3 variants including UPD70F3453F1(R)-DA9-A. This allows direct substitution in existing designs when increased Flash (512 KB vs. 384 KB) or RAM (48 KB vs. 32 KB) is required - no PCB changes or layout modifications are needed for UPD70F3454F1(R)-DA9-A drop-in replacement.