Renesas DF2134AVFA10V

Overview

DF2134AVFA10V from Renesas Electronics is a 16-bit single-chip microcontroller in the H8S/2134 Group, featuring a 32-bit H8S/2000 CPU core, 128 KB on-chip flash memory (F-ZTAT™), and integrated peripherals including dual 14-bit PWM timers, 8-channel 10-bit ADC, dual 8-bit DACs, three SCI interfaces, and 8-bit timer (TMR) with three channels. It operates at up to 25 MHz and supports single 5 V supply operation for embedded control in PC peripheral and power management systems.

For engineers reviewing the DF2134AVFA10V datasheet, DF2134AVFA10V pinout, DF2134AVFA10V application, or DF2134AVFA10V equivalent, key selection criteria include its 80-pin TFP-80C package, absence of I²C, DTC, HIF, and PWM modules (vs. H8S/2138), confirmed 128 KB flash endurance (10,000 erase/write cycles), 10-year data retention, and support for WAIT/STOP low-power modes.

Technical Context

The DF2134AVFA10V implements the H8S/2000 CPU core with 16 × 16-bit general-purpose registers and a 16-Mbyte linear address space. It executes basic instructions in one state and supports high-level language compilation, particularly C, with efficient register usage and optimized instruction set architecture.

Its peripheral set includes a 16-bit free-running timer (FRT), three 8-bit timer (TMR) channels, two watchdog timers (WDT), three serial communication interfaces (SCI), dual 8-bit DACs, an 8-channel 10-bit ADC with expansion inputs, and 80 I/O pins - all managed via dedicated on-chip control registers without requiring external glue logic.

Key Specifications

Pinout & Package

DF2134AVFA10V is housed in an 80-pin thin fine-pitch plastic QFP (TFP-80C) package with 0.5 mm lead pitch, designed for high-density PCB layouts and reflow soldering compatibility.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DF2134AVFA10V, HD64F2134AV offers identical functionality in a functionally equivalent package, while R5F21348 provides a modern, lower-cost alternative with reduced peripheral depth-making it viable only where FRT, dual DACs, or 3×SCI are not critical.

Availability

DF2134AVFA10V is available at Aetrix Electronics and suitable for keyboard controllers, intelligent power supplies, industrial motor drivers, and embedded display controllers requiring stable component supply, long-lifecycle support, and proven field reliability in commercial-grade applications.

Supply support for DF2134AVFA10V 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 automotive, industrial, and consumer markets.

The H8S/2134 Group, including DF2134AVFA10V, was designed for cost-effective, high-integration embedded control in PC peripherals and power management systems-emphasizing flash programmability, analog integration, and low-power operation without sacrificing real-time responsiveness.

FAQ

What is the maximum operating frequency of the DF2134AVFA10V?

The DF2134AVFA10V operates at a maximum frequency of 25 MHz when supplied with 4.5 V to 5.5 V. This clock speed is derived from an external crystal or oscillator connected to the EXTAL/CLK pins and governs instruction execution, timer increments, and SCI baud rate generation. The H8S/2000 CPU core achieves one-state instruction execution at this frequency, enabling predictable real-time performance in time-critical applications such as keyboard scanning and power regulation.

Does the DF2134AVFA10V include an I²C interface?

No, the DF2134AVFA10V does not include an I²C interface. As specified in the H8S/2134 Group documentation, this device omits the I²C bus interface (IIC) module present in the higher-function H8S/2138 Group. Instead, DF2134AVFA10V provides three SCI (serial communication interface) modules configured for UART operation, which can be used for point-to-point serial communication with sensors, displays, or host processors. External I²C peripherals must be interfaced via bit-banged GPIO if required.

What is the flash memory endurance specification for DF2134AVFA10V?

The DF2134AVFA10V features 128 KB of F-ZTAT™ flash memory rated for a minimum of 10,000 erase/write cycles and guaranteed 10-year data retention at 25°C. These specifications are confirmed in Renesas' Hardware Manual Rev. 4.00 (2006), Table 25.27 and Table 25.49. Endurance applies across the full address range and assumes operation within specified voltage and temperature limits; exceeding 25°C ambient or using marginal VCC may reduce effective cycle count.

Which package type is used for DF2134AVFA10V?

The DF2134AVFA10V uses the TFP-80C package: an 80-pin thin fine-pitch plastic QFP with 0.5 mm lead pitch. This package is distinct from the FP-80A variant used by some related parts (e.g., HD64F2134AV) and is optimized for high-density surface-mount assembly. Pin functions-including VCC/VSS distribution, RESET, CLK/EXTAL, and I/O ports P0–P9-are fully documented in Section 1.3.2 of the H8S/2134 Group Hardware Manual.

Can DF2134AVFA10V operate from a 3.3 V supply?

No, DF2134AVFA10V is not rated for 3.3 V operation. Its absolute maximum ratings and DC characteristics specify a supply voltage range of 4.5 V to 5.5 V. Attempting to power DF2134AVFA10V at 3.3 V will result in undefined behavior, failure to initialize, or unreliable peripheral operation-including incorrect ADC readings, SCI framing errors, and unstable flash programming. For 3.3 V systems, designers should select a compatible successor MCU such as the R8C/20 series or use level-shifting circuitry for interface signals only.