Renesas DF2238RTE13V

Overview

DF2238RTE13V from Renesas Electronics is a 16-bit single-chip microcontroller in the H8S/2238 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), and four serial communication interfaces (SCI). It targets industrial control and embedded instrumentation requiring deterministic real-time response.

For engineers reviewing the DF2238RTE13V datasheet, DF2238RTE13V pinout, DF2238RTE13V application, or DF2238RTE13V equivalent, key selection criteria include flash endurance (10,000 write/erase cycles), operating voltage range (3.0 V to 3.6 V), maximum clock frequency (32 MHz), and support for IEBus™ controller interface in select variants.

Technical Context

The DF2238RTE13V implements the H8S/2000 32-bit internal architecture with 16-bit external data bus, enabling efficient instruction execution and peripheral access. It supports multiple power-down modes-subactive, sleep, and deep-stop-with on-chip power-on reset and low-voltage detection circuitry for robust system initialization and brownout recovery.

Peripheral integration includes a bus controller (BSC) for external memory expansion up to 16 MB, a data transfer controller (DTC) for autonomous memory-to-peripheral transfers, and dual D/A converters (10-bit, 2-channel) for analog output generation. The device operates in standard quality grade per Renesas classification, intended for industrial robots, test equipment, and office automation systems.

Key Specifications

Pinout & Package

DF2238RTE13V is housed in a 100-pin TQFP (Thin Quad Flat Package) with 0.5 mm pitch, designated as TFP-100BV per Renesas documentation. Pin functions are mode-configurable via on-chip registers, supporting multiple peripheral multiplexing options including SCI, TPU, I²C, and A/D inputs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with HD64F2238R, DF2238RTE13V provides lead-free packaging and full RoHS compliance without functional trade-offs. Against H8S/2239, it offers identical real-time performance and memory resources but omits I²C-making it more appropriate for legacy IEBus-based industrial equipment where pin compatibility and qualification continuity are critical.

Availability

DF2238RTE13V is available at Aetrix Electronics and suitable for industrial PLCs, test instrumentation, office equipment, and embedded data loggers requiring stable component supply across extended product lifecycles.

Supply support for DF2238RTE13V 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, and power solutions for industrial, automotive, and infrastructure markets.

The H8S/2238 Group was designed for cost-effective, high-reliability embedded control in industrial automation and office equipment, emphasizing flash reprogrammability, rich timer resources, and legacy bus support like IEBus™.

FAQ

What is the maximum operating frequency of the DF2238RTE13V?

The DF2238RTE13V supports a maximum CPU clock frequency of 32 MHz when driven by an external crystal or oscillator within the specified 1–20 MHz range. This frequency is achieved using the on-chip PLL circuit, which multiplies the input clock while maintaining stability across the −40°C to +85°C operating temperature range. The DF2238RTE13V's timing specifications are fully characterized at this speed in Renesas' Hardware Manual Rev.6.00.

Does the DF2238RTE13V include an I²C interface?

No, the DF2238RTE13V does not integrate an I²C bus interface. According to the Renesas Hardware Manual, I²C is available only in the H8S/2239 Group and selected H8S/2258 variants-not in the H8S/2238 Group. The DF2238RTE13V instead features an IEBus™ controller, four SCI channels, and two optional I²C-compatible ports that require external pull-up resistors and software bit-banging implementation.

What package type and lead finish does the DF2238RTE13V use?

The DF2238RTE13V is supplied in a 100-pin Thin Quad Flat Package (TQFP) with 0.5 mm pitch, designated TFP-100BV by Renesas. It features a lead-free (Pb-free) matte tin finish compliant with JEDEC J-STD-020 and RoHS Directive 2011/65/EU. This distinguishes it from the non-RoHS HD64F2238R variant, which uses the TFP-100B package with leaded finish.

How many A/D converter input channels does the DF2238RTE13V support?

The DF2238RTE13V integrates a single 10-bit successive-approximation A/D converter with eight analog input channels (AN0–AN7), as confirmed in the "List of On-Chip Peripheral Functions" section of the Renesas Hardware Manual. These channels share a common sample-and-hold circuit and support both single-shot and continuous conversion modes, with conversion time of 1.2 µs per channel at maximum clock rate.

Is the DF2238RTE13V qualified for automotive applications?

No, the DF2238RTE13V is classified as a "Standard" quality grade device per Renesas' product grading system and is intended for computers, office equipment, communications gear, and industrial robots-not automotive or safety-critical systems. It lacks AEC-Q100 qualification, extended temperature screening, and fault-tolerant design features required for automotive ECUs. For automotive use, Renesas recommends the RH850 or RL78/F1x families instead of the DF2238RTE13V.