Renesas DF2628FA24V

Overview

DF2628FA24V from Renesas Electronics is a 16-bit single-chip microcontroller in the H8S/2628 Group, featuring the H8S/2600 CPU core, 256 KB on-chip flash memory (F-ZTAT™), 16 KB RAM, and integrated peripherals including TPU, PPG, WDT, SCI, HCAN, SSU, and 10-bit A/D converter. It operates at up to 24 MHz and targets embedded control systems requiring deterministic real-time response, such as industrial motor drives and HVAC controllers.

For engineers reviewing the DF2628FA24V datasheet, DF2628FA24V pinout, DF2628FA24V application, or DF2628FA24V equivalent, key selection criteria include its 24 MHz max CPU frequency, 10-bit A/D with 8-channel analog input (Port 9), HCAN interface compliance with ISO 11898-1, and F-ZTAT™ flash reprogrammability without external programming voltage.

Technical Context

The DF2628FA24V implements the H8S/2600 CPU core with instruction set compatibility to H8/300H, supporting both normal and advanced addressing modes (though normal mode is disabled per hardware manual). Its on-chip data transfer controller (DTC) enables autonomous peripheral-to-memory transfers without CPU intervention.

Peripheral integration includes a 16-bit timer pulse unit (TPU) with phase counting capability on channels 1/2/4/5, programmable pulse generator (PPG) for waveform synthesis, and dual-channel serial communication interface (SCI) supporting asynchronous and clock-synchronous modes. The HCAN module supports CAN 2.0B protocol with 32 message objects and configurable acceptance filtering.

Key Specifications

Pinout & Package

DF2628FA24V is housed in a 100-pin LQFP package (14 mm × 14 mm, 0.5 mm pitch) with dedicated power/ground pairs, crystal oscillator inputs (XIN/XOUT), and multiplexed I/O pins supporting peripheral functions including TPU, SCI, and A/D.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DF2628FA24V, R5F21262SNFP omits HCAN and F-ZTAT™, limiting it to simpler control tasks, while HD64F2628F20 trades maximum speed and compact LQFP packaging for greater I/O expandability - making DF2628FA24V optimal for space-constrained, CAN-connected industrial controllers needing field-upgradable firmware.

Availability

DF2628FA24V 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 and long-term production continuity.

Supply support for DF2628FA24V 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 manufacturer specializing in microcontrollers, analog, and power devices for industrial, automotive, and infrastructure markets.

The H8S/2628 Group was designed as a high-performance 16-bit embedded controller platform targeting real-time industrial automation, motion control, and networked equipment where deterministic timing, integrated peripherals, and field-programmable flash are critical.

FAQ

What is the maximum operating frequency of the DF2628FA24V?

The DF2628FA24V operates at a maximum CPU frequency of 24 MHz, achieved using an external crystal oscillator connected to XIN/XOUT pins. This frequency enables sub-42 ns instruction cycle times and supports real-time control loops with tight timing budgets, such as those required in servo motor positioning or switching power supply regulation. The DF2628FA24V's internal PLL and clock distribution network maintain stability across its specified voltage and temperature range.

Does the DF2628FA24V support in-system programming of its flash memory?

Yes, the DF2628FA24V features F-ZTAT™ flash technology, enabling single-power (3.3 V) in-system programming without requiring elevated VPP voltage. This allows firmware updates to be performed directly in the target application via SCI or CAN, eliminating the need for external programmers. The DF2628FA24V's flash controller supports sector erase and byte/word write operations, making it suitable for both full-image updates and incremental patch deployment in deployed equipment.

Which analog-to-digital converter specifications apply to the DF2628FA24V?

The DF2628FA24V integrates a 10-bit successive-approximation A/D converter with 8 input channels mapped to Port 9 pins. It supports conversion times as fast as 1.2 μs per sample and includes built-in sample-and-hold functionality. The DF2628FA24V's A/D module supports software-triggered, timer-triggered, and external-triggered conversions, and its result registers are accessible via the on-chip DTC for automatic data transfer to RAM without CPU involvement.

Is the DF2628FA24V pin-compatible with other members of the H8S/2628 Group?

No, the DF2628FA24V is not pin-compatible with other H8S/2628 variants such as HD64F2628 or R5F21262SNFP due to differences in package type (100-pin LQFP vs. 128-pin QFP or 80-pin LQFP), pin assignment of peripheral functions, and power/ground pin distribution. While functional compatibility exists at the register and instruction-set level, hardware redesign is required when substituting the DF2628FA24V into boards designed for alternate variants. Always consult the DF2628FA24V-specific pin diagram before layout integration.

What communication interfaces are integrated into the DF2628FA24V?

The DF2628FA24V integrates multiple serial interfaces: two independent SCI channels supporting asynchronous and clock-synchronous modes, one HCAN controller compliant with ISO 11898-1, and one synchronous serial communication unit (SSU) for SPI-like master/slave operation. These interfaces operate concurrently and can be assigned to different port pins via function select registers. The DF2628FA24V's HCAN module includes 32 message objects and programmable acceptance filtering, enabling robust multi-node networking in electrically noisy industrial environments.