Renesas UPD78F1835AGBA-GAH-G

Overview

UPD78F1835AGBA-GAH-G from Renesas Electronics is a 16-bit single-chip microcontroller in the 78K0R/FE3 family, featuring 256 KB on-chip Flash memory, 24 KB RAM, and integrated peripherals including 12-bit ADC, 16-bit timer arrays, UART, I²C, and CAN 2.0B controller. It operates at up to 20 MHz and supports industrial temperature range (−40°C to +85°C) in a 100-pin LQFP package. It is used in motor control, industrial automation, and building management systems.

For engineers reviewing the UPD78F1835AGBA-GAH-G datasheet, UPD78F1835AGBA-GAH-G pinout, UPD78F1835AGBA-GAH-G application, or UPD78F1835AGBA-GAH-G equivalent, key selection considerations include Flash endurance (100k write/erase cycles), CAN bus timing compliance, real-time interrupt latency (<1.5 µs), and support for Renesas' self-programming library for field firmware updates.

Technical Context

The UPD78F1835AGBA-GAH-G implements the 78K0R CPU core with 16-bit ALU, 24-bit addressing, and Harvard architecture. It integrates a dedicated CAN controller compliant with ISO 11898-1:2003, supporting both standard and extended frames, programmable bit timing, and 32 message objects with hardware acceptance filtering.

Its peripheral set includes a 12-channel 12-bit ADC with 1.1 µs conversion time, four 16-bit timer arrays with complementary PWM output, and dual UART channels with LIN support. The device uses on-chip voltage regulator (REGC pin) for internal core supply and supports low-power modes including HALT and STOP with wake-up via external interrupt or RTC.

Key Specifications

Pinout & Package

UPD78F1835AGBA-GAH-G is housed in a 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch) package with exposed thermal pad. Pin functions are defined per Renesas User's Manual Rev.6.00 (R01UH0007EJ0600), Section 1.5.3 and 2.1.5 for 78K0R/FE3.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit microcontroller applications.

Compared with R5F57835ADFP, UPD78F1835AGBA-GAH-G offers lower BOM cost and deterministic real-time behavior without OS dependency; compared with UPD78F1834AGBA-GAH-G, it provides 64 KB additional Flash and 8 KB extra RAM for complex control algorithms and larger protocol stacks - critical for multi-interface gateway applications.

Availability

UPD78F1835AGBA-GAH-G is available at Aetrix Electronics and suitable for industrial motor control, building automation, factory floor PLC modules, and energy metering gateways requiring stable component supply across long production lifecycles.

Supply support for UPD78F1835AGBA-GAH-G 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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The UPD78F1835AGBA-GAH-G belongs to the 78K0R/Fx3 product line, designed specifically for cost-sensitive, real-time industrial control applications requiring robust CAN connectivity, high-precision analog acquisition, and long-term supply stability.

FAQ

What is the maximum operating frequency of the UPD78F1835AGBA-GAH-G?

The UPD78F1835AGBA-GAH-G operates at a maximum CPU clock frequency of 20 MHz, achieved using an on-chip PLL that accepts input from internal oscillator (1 MHz), external crystal (1–20 MHz), or external clock source. At 20 MHz, the device delivers 1.25 MIPS/MHz, enabling deterministic execution of real-time control loops with sub-50 µs jitter.

Does the UPD78F1835AGBA-GAH-G support CAN FD?

No, the UPD78F1835AGBA-GAH-G implements a classical CAN 2.0B controller compliant with ISO 11898-1:2003 and does not support CAN FD features such as flexible data-rate or extended payload length. It supports bit rates up to 1 Mbps and standard/extended identifier formats, but lacks the arbitration-phase bitrate switching and CRC enhancements required for CAN FD.

What development tools are officially supported for the UPD78F1835AGBA-GAH-G?

Renesas officially supports the QB-MINI2 on-chip debug emulator and ID78K0R-QB integrated debugger for the UPD78F1835AGBA-GAH-G. Software toolchain includes CC78K0R C compiler Ver. 2.00 and RA78K0R assembler Ver. 1.20. Flash programming is performed using PG-FP5 programmer with firmware supporting the 78K0R/FE3 device group.

Is the UPD78F1835AGBA-GAH-G qualified for automotive applications?

No, the UPD78F1835AGBA-GAH-G is rated for Industrial grade (−40°C to +85°C) and classified as "Standard" quality per Renesas documentation. It is not AEC-Q100 qualified and lacks automotive-specific features such as extended temperature screening, enhanced ESD immunity, or failure-in-time (FIT) reporting - making it unsuitable for safety-critical vehicle subsystems.

How is Flash memory endurance specified for the UPD78F1835AGBA-GAH-G?

The UPD78F1835AGBA-GAH-G guarantees 100,000 write/erase cycles for its 256 KB on-chip Flash memory, with data retention of 10 years at +85°C ambient. Endurance applies to all sectors, including the boot area. Wear leveling must be implemented in firmware; no hardware wear-leveling logic is integrated into the Flash controller.