Renesas DF2370VFQ34V

Overview

DF2370VFQ34V from Renesas Electronics is a 16-bit single-chip microcontroller (MCU) in the H8S/2370 Group, featuring an H8S/2000 CPU core, 512 KB on-chip flash ROM, 32 KB RAM, and integrated peripherals including TPU, PPG, SCI, IrDA, 10-bit ADC, 8-bit DAC, WDT, and DTC. It operates at up to 33 MHz and supports multiple boot and memory expansion modes for embedded control applications.

For engineers reviewing the DF2370VFQ34V datasheet, DF2370VFQ34V pinout, DF2370VFQ34V application, or DF2370VFQ34V equivalent, key selection criteria include its 144-pin LQFP package, 3.3 V operation, on-chip flash reprogrammability (F-ZTAT™), and support for external DRAM interfacing via high-functionality bus controller.

Technical Context

The DF2370VFQ34V implements the H8S/2000 CPU with a 32-bit internal architecture, sixteen 16-bit general-purpose registers, and linear 16-Mbyte address space. It integrates dual DMA controllers (DMAC and EXDMAC), a data transfer controller (DTC), and programmable pulse generation logic for real-time signal timing.

Its peripheral set includes a 16-bit timer pulse unit (TPU) with 8 channels, serial communication interfaces (SCI ×2, IrDA), and dual I²C buses (IIC2 optional). Memory mapping supports Mode 4 (expanded mode with on-chip ROM enabled) and Mode 7 (single-chip activation expanded mode), both with 512 KB ROM and 32 KB RAM.

Key Specifications

Pinout & Package

DF2370VFQ34V is housed in a 144-pin LQFP (Low-Profile Quad Flat Package) with 0.5 mm lead pitch and 20 mm × 20 mm body size. The package supports thermal dissipation up to 1.5 W under typical industrial ambient conditions and is RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with HD64F2370R and R5F21237SNFP, DF2370VFQ34V uniquely balances legacy system compatibility (H8S instruction set, DRAM bus), field-upgradable flash, and integrated analog I/O - making it optimal for sustaining production of established industrial controllers.

Availability

DF2370VFQ34V is available at Aetrix Electronics and suitable for industrial motor control, factory automation I/O modules, medical diagnostic equipment, and test & measurement instruments requiring stable component supply across extended product lifecycles.

Supply support for DF2370VFQ34V 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/2370 Group, including DF2370VFQ34V, was designed for cost-sensitive, high-reliability embedded control applications demanding real-time performance, integrated peripherals, and long-term supply stability in industrial environments.

FAQ

What is the maximum operating frequency of the DF2370VFQ34V?

The DF2370VFQ34V supports a maximum system clock frequency of 33 MHz. This timing specification is validated under the recommended operating conditions of 3.3 V ±0.3 V supply and industrial temperature range (−40°C to +85°C). The actual achievable frequency depends on external clock source stability and PCB layout integrity, particularly for CLK and RESET signal routing. DF2370VFQ34V achieves deterministic instruction execution at this rate due to its zero-wait-state on-chip memory access.

Does the DF2370VFQ34V support external memory expansion?

Yes, the DF2370VFQ34V supports external memory expansion through its high-functionality bus controller, which handles asynchronous SRAM/ROM and synchronous DRAM (up to 64 Mbit, 1 Mword × 16-bit × 4-bank). Address lines A16–A23 and data lines D0–D7 are multiplexed on port pins PA0–PA7 and PD0–PD7 respectively. DF2370VFQ34V configures wait states and bus timing via dedicated control registers (e.g., BCR, WCR) to match diverse memory device characteristics.

What analog peripherals are integrated into the DF2370VFQ34V?

The DF2370VFQ34V integrates a 10-bit successive-approximation ADC with 8 input channels and an 8-bit voltage-output DAC. The ADC supports software/start-triggered conversion with configurable sample-and-hold timing, while the DAC provides monotonic output with ±1 LSB integral nonlinearity. These peripherals are directly accessible via dedicated registers and require no external components for basic operation. DF2370VFQ34V uses these for sensor signal acquisition and reference voltage generation in closed-loop control systems.

Is the DF2370VFQ34V pin-compatible with other H8S/237x family members?

No, the DF2370VFQ34V is not pin-compatible with other H8S/237x variants such as H8S/2378 or H8S/2374. While sharing the same 144-pin LQFP package outline, pin functions differ significantly across the family - for example, address/data bus allocation, peripheral signal mapping (e.g., TPU channel assignments), and power/ground pin distribution vary per model. DF2370VFQ34V requires its specific pinout table (Section 10 of Hardware Manual REJ09B0109) for correct PCB layout and signal routing.

What development tools are supported for the DF2370VFQ34V?

Renesas provides official support for DF2370VFQ34V through the High-performance Embedded Workshop IDE (v4.04), H8S C/C++ Compiler v6.01, and H8S Simulator/Debugger. These tools enable full debugging, flash programming, and peripheral register simulation. Third-party JTAG emulators compatible with the H8S/2000 core (e.g., PEEDI, Segger J-Link with H8S add-on) also support DF2370VFQ34V. DF2370VFQ34V firmware can be programmed in-circuit using the on-chip F-ZTAT™ flash interface via SCI or dedicated programming pins.