Renesas DF2239FA20V

Overview

DF2239FA20V from Renesas Electronics is a 16-bit flash-based microcontroller in the H8S/2239 Group, featuring an H8S/2000 CPU core, 512 KB on-chip flash memory, 32 KB RAM, and integrated peripherals including six 16-bit timer pulse units (TPU), four 8-bit timers (TMR), dual watchdog timers (WDT), four serial communication interfaces (SCI), two I²C buses, two D/A converters, and an 8-channel 10-bit A/D converter. It operates at up to 40 MHz and targets industrial control and embedded automation systems.

For engineers reviewing the DF2239FA20V datasheet, DF2239FA20V pinout, DF2239FA20V application, or DF2239FA20V equivalent, key selection criteria include flash memory size (512 KB), TPU count (×6), SCI channel count (×4), A/D resolution (10-bit, 8-channel), and support for IEBus™ controller - all confirmed for this specific variant in Renesas Hardware Manual REJ09B0054-0600.

Technical Context

The DF2239FA20V implements the H8S/2000 32-bit internal architecture with 16-bit external bus interface, supporting high-speed execution via instruction prefetch and pipeline optimization. Its peripheral set includes a bus controller (BSC) for external memory expansion, data transfer controller (DTC) for autonomous data movement, and PC break controllers (×2) for real-time debugging.

It supports multiple operating modes - including high-speed, subactive, and power-down - controlled via SLEEP instruction and clock control registers. Flash memory is reprogrammable in-system (F-ZTAT™ technology), enabling field updates without removal from the target board.

Key Specifications

Pinout & Package

DF2239FA20V is packaged in a 100-pin TFP-100BV (thin fine-pitch plastic QFP) with 0.5 mm pitch, optimized for compact industrial PCB layouts and thermal performance under continuous operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with HD64F2239F20V, DF2239FA20V offers identical functionality with updated part numbering; compared with R5F2239GDFP, DF2239FA20V delivers 4× more flash, full IEBus™ support, and 50% more TPU channels - critical for industrial and automotive applications requiring protocol flexibility and deterministic timing.

Availability

DF2239FA20V is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive HVAC controllers, smart energy meters, and medical diagnostic equipment interfaces requiring stable component supply across long production lifecycles.

Supply support for DF2239FA20V 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/2239 Group, including DF2239FA20V, was designed for high-reliability embedded control in environments demanding robust real-time performance, field-upgradable firmware, and mixed-signal integration - particularly in factory automation and automotive subsystems.

FAQ

What is the maximum operating frequency of the DF2239FA20V?

The DF2239FA20V supports a maximum system clock frequency of 40 MHz, achieved via internal PLL multiplication of an external 1–20 MHz crystal input. This allows tight real-time control loops with sub-25 ns instruction cycle time. The DF2239FA20V datasheet specifies timing margins for all peripheral modules at this frequency, including TPU output jitter and SCI baud rate accuracy.

Does the DF2239FA20V include an integrated IEBus™ controller?

Yes, the DF2239FA20V integrates a dedicated IEBus™ controller compliant with NEC's Inter Equipment Bus standard, enabling direct communication with automotive audio/video head units and OEM displays without external protocol ICs. This feature is explicitly documented in the H8S/2239 Group Hardware Manual (REJ09B0054-0600) and distinguishes DF2239FA20V from later R8C-series MCUs.

What package type is used for the DF2239FA20V?

The DF2239FA20V is supplied in a 100-pin TFP-100BV thin fine-pitch plastic QFP package with 0.5 mm lead pitch. This package is thermally optimized for industrial ambient temperatures and supports high-density PCB routing. Pin compatibility is confirmed across the H8S/2239 Group, including variants like HD64F2239F20V.

How much on-chip flash memory does the DF2239FA20V provide?

The DF2239FA20V includes 512 KB of on-chip flash memory using Renesas' F-ZTAT™ technology, allowing full firmware storage, bootloader, and field-upgradable safety routines. This capacity is verified in the memory map section (Section 2.3) of the H8S/2239 Group Hardware Manual and exceeds that of predecessor H8S/2227 devices by 2×.

Is the DF2239FA20V pin-compatible with other H8S/2239 Group members?

Yes, the DF2239FA20V shares identical pinout and package dimensions with other H8S/2239 Group variants such as HD64F2239F20V and HD64F2239F20W, as confirmed in Table 1.2 of the Hardware Manual REJ09B0054-0600. All share the TFP-100BV footprint and functional pin assignments across modes 4–7 and flash programmable mode.