Renesas DF2134ATF20V

Overview

DF2134ATF20V 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 8-channel 10-bit ADC, dual 2-channel 14-bit PWM timers (PWMX), and three SCI interfaces. It operates at up to 20 MHz with 5 V supply and targets embedded control in PC peripheral subsystems.

For engineers reviewing the DF2134ATF20V datasheet, DF2134ATF20V pinout, DF2134ATF20V application, or DF2134ATF20V equivalent, key selection criteria include flash endurance (10,000 erase/write cycles), 8-bit timer count (3 channels), absence of I²C, DTC, and host interface modules versus the H8S/2138 Group, and TFP-80C 80-pin thin fine-pitch package compatibility.

Technical Context

The DF2134ATF20V implements the H8S/2000 CPU core with 16 × 16-bit general-purpose registers and a 16-Mbyte linear address space. It supports single-power-supply flash programming via F-ZTAT™ technology and includes a data transfer controller (DTC)–free architecture optimized for cost-sensitive, function-reduced applications.

Its peripheral set excludes I²C bus interface, host interface (HIF), and DTC-distinguishing it from the full-featured H8S/2138 Group-while retaining dual DACs, 8 analog inputs, watchdog timer (dual), and serial communication interfaces (SCI×3) for real-time sensor and actuator interfacing.

Key Specifications

Pinout & Package

DF2134ATF20V is housed in a TFP-80C (Thin Fine-Pitch) 80-pin QFP package with 0.5 mm pitch, designed for high-density PCB layouts and industrial temperature operation (–40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with DF2134ATF20V, HD64F2134AV trades field-programmability for lower unit cost in stable firmware deployments, while H8S/2138F-ZTAT™ adds silicon-level peripherals at higher BOM cost-making DF2134ATF20V the optimal balance of flash flexibility, timer richness, and peripheral sufficiency for mid-tier embedded control.

Availability

DF2134ATF20V is available at Aetrix Electronics and suitable for intelligent power supply control, PC peripheral subsystems, industrial sensor hubs, and display management requiring stable component supply across extended product lifecycles.

Supply support for DF2134ATF20V 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 IoT applications.

The H8S/2134 Group was designed specifically for cost-optimized, flash-based embedded control in PC-related peripherals and power management systems-emphasizing timer precision, serial interface density, and single-supply programmability.

FAQ

What is the maximum operating frequency of the DF2134ATF20V?

The DF2134ATF20V operates at a maximum frequency of 20 MHz. This clock speed is supported across its full industrial temperature range (–40°C to +85°C) and 4.5 V to 5.5 V supply voltage. The H8S/2000 CPU core executes most instructions in a single cycle at this rate, enabling deterministic real-time response for time-critical functions such as PWM waveform generation and ADC sampling triggers. DF2134ATF20V's timing specifications are validated under these conditions per Renesas Hardware Manual Rev. 4.00.

Does the DF2134ATF20V include an I²C bus interface?

No, the DF2134ATF20V does not include a hardware I²C bus interface. As a member of the reduced-function H8S/2134 Group, it omits I²C, DTC, host interface (HIF), and PWM modules present in the H8S/2138 Group. While pins P52 and P97 can be configured for software-emulated I²C signaling due to their NMOS push-pull output structure, DF2134ATF20V lacks dedicated I²C control registers, interrupt support, or clock stretching capability. DF2134ATF20V relies on SCI or bit-banged GPIO for serial peripheral communication.

What is the flash memory endurance specification for the DF2134ATF20V?

The DF2134ATF20V features 128 KB of F-ZTAT™ flash memory rated for 10,000 erase/write cycles minimum and 10 years of data retention at 25°C. This endurance is guaranteed across the full operating voltage (4.5–5.5 V) and temperature (–40°C to +85°C) ranges. Each sector can be erased independently, supporting modular firmware updates. DF2134ATF20V's flash programming is performed in-system at standard VCC without requiring external high-voltage supplies, simplifying field upgrades and manufacturing test flows.

How many ADC channels does the DF2134ATF20V support, and what is the resolution?

The DF2134ATF20V integrates an 8-channel, 10-bit successive-approximation ADC with dedicated analog input pins (AN0–AN7). It supports software or timer-triggered conversions and provides conversion times as fast as 1.2 µs per sample under optimal conditions. The ADC includes internal reference voltage options and supports both single-ended and pseudo-differential input configurations. DF2134ATF20V's ADC performance is specified across its full operating range, making it suitable for precision analog sensing in power management and environmental monitoring applications.

What package type is used for the DF2134ATF20V?

The DF2134ATF20V is packaged in a TFP-80C (Thin Fine-Pitch Quad Flat Package) with 80 pins and 0.5 mm lead pitch. This RoHS-compliant package supports surface-mount assembly and is qualified for industrial temperature operation (–40°C to +85°C). The TFP-80C footprint matches other members of the H8S/2134 and H8S/2138 Groups, enabling layout reuse across variants. DF2134ATF20V's pinout includes dedicated power/ground pairs, segregated analog/digital sections, and NC pins that must remain unconnected per Renesas design guidelines.