Renesas DF2556FC20DV

Overview

DF2556FC20DV from Renesas Electronics is a 16-bit single-chip microcomputer in the H8S/2556 Group, featuring an H8S/2000 CPU core, 512 KB on-chip flash memory (F-ZTAT™), and integrated peripherals including six 16-bit TPU channels, five SCI interfaces, two I²C buses, one CAN controller (HCAN), 16-channel 10-bit A/D converter, and dual D/A converters. It targets industrial control and embedded automation systems requiring deterministic real-time response.

For engineers reviewing the DF2556FC20DV datasheet, DF2556FC20DV pinout, DF2556FC20DV application, or DF2556FC20DV equivalent, key selection criteria include its 20 MHz max operating frequency, 3.3 V supply voltage, 128-pin LQFP package, and support for CAN bus communication and high-resolution analog I/O in resource-constrained embedded designs.

Technical Context

The DF2556FC20DV implements the H8S/2000 CPU architecture with 32-bit internal data paths, supporting both Normal and Advanced operating modes. It integrates a Bus Controller for external memory expansion, a Data Transfer Controller (DTC) for autonomous peripheral-to-memory transfers, and a PC Break Controller (PBC) for non-intrusive debugging.

Its peripheral set includes a dedicated Controller Area Network (HCAN) module compliant with ISO 11898-1, five independent Serial Communication Interfaces (SCI) supporting asynchronous and clock-synchronous modes, and a 16-channel A/D converter with sample-and-hold and programmable conversion timing-enabling precise sensor acquisition in motor control and power monitoring applications.

Key Specifications

Pinout & Package

DF2556FC20DV is housed in a 128-pin LQFP (14 mm × 20 mm, 0.5 mm pitch) package with exposed thermal pad. Pin functions are mode-dependent (e.g., multiplexed for I/O, timer, SCI, CAN, A/D), requiring configuration via mode control registers (MDCR, SYSCR) and peripheral function select registers.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F21256SDFP and HD64F2556F20, DF2556FC20DV provides optimal balance of industrial-grade reliability, modern flash programming features, and cost efficiency for new designs operating within standard commercial temperature ranges.

Availability

DF2556FC20DV is available at Aetrix Electronics and suitable for industrial motor control, building automation gateways, PLC I/O modules, and energy metering concentrators requiring stable component supply and long-term manufacturing continuity.

Supply support for DF2556FC20DV 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 H8S/2556 Group-including DF2556FC20DV-is designed for deterministic real-time embedded control in cost-sensitive industrial equipment, emphasizing integrated analog/mixed-signal capability, CAN connectivity, and field-upgradable flash memory.

FAQ

What is the maximum operating frequency and supply voltage for DF2556FC20DV?

The DF2556FC20DV operates at a maximum frequency of 20 MHz with a supply voltage of 3.3 V ±0.3 V. This specification ensures stable timing for CAN bit arbitration, A/D conversion, and real-time interrupt handling. The device requires separate analog (AVCC/AVSS) and digital (DVCC/DVSS) power domains to maintain signal integrity in mixed-signal applications. DF2556FC20DV must not be operated outside these limits to avoid functional failure or parametric drift.

Does DF2556FC20DV include a CAN controller, and what version of the CAN protocol does it support?

Yes, DF2556FC20DV integrates a dedicated Controller Area Network (HCAN) module compliant with ISO 11898-1 (CAN 2.0B). It supports both standard (11-bit) and extended (29-bit) identifier frames, 32 configurable message objects, and hardware acceptance filtering. DF2556FC20DV does not include a physical transceiver-external CAN PHY (e.g., TJA1042) is required for bus connection. The HCAN module offloads protocol handling from the CPU, enabling deterministic response in multi-node networks.

How many A/D converter channels does DF2556FC20DV have, and what is their resolution and conversion speed?

DF2556FC20DV features a 16-channel, 10-bit successive-approximation A/D converter with a minimum conversion time of 1.2 μs per channel. It supports group conversion mode for synchronized sampling across up to eight channels, and includes internal sample-and-hold circuitry. The A/D module accepts input voltages from 0 V to AVCC and is optimized for sensor interfacing in motor control and power monitoring. DF2556FC20DV's A/D performance is specified over the full industrial temperature range.

Is DF2556FC20DV pin-compatible with other members of the H8S/2556 Group, such as HD64F2556F20?

Yes, DF2556FC20DV is pin-compatible with HD64F2556F20 and R5F21256SDFP, sharing identical 128-pin LQFP footprint, pin functions, and electrical characteristics. All three parts use the same register map and peripheral configuration logic. DF2556FC20DV maintains backward compatibility with legacy HD64F2556F20 designs while adding Renesas' updated quality assurance and F-ZTAT™ flash branding. No PCB layout changes are needed when migrating between these variants.

What development tools and documentation are officially supported for DF2556FC20DV?

Renesas officially supports DF2556FC20DV with the H8S/2600 Series Software Manual (REJ09B0139), Hardware Manual REJ09B0099-0600, and development tools including the High-performance Embedded Workshop IDE, H8S C/C++ Compiler (Ver.6.01), and H8S Simulator/Debugger. Application notes cover CAN initialization, A/D calibration, and DTC configuration. DF2556FC20DV design resources are available at renesas.com without registration, and legacy NEC documentation remains valid per the April 2010 merger notice.