Renesas DF2328BVF25V

Overview

DF2328BVF25V from Renesas Electronics is a 16-bit single-chip microcomputer in the H8S/2328 Group, featuring an H8S/2000 CPU core, 256 KB on-chip F-ZTAT™ flash memory, 16 KB RAM, and integrated peripherals including TPU, SCI, A/D converter, D/A converter, DMA controller, and watchdog timer. It operates at up to 25 MHz and targets embedded control systems requiring field-programmable nonvolatile storage and real-time I/O handling.

For engineers reviewing the DF2328BVF25V datasheet, DF2328BVF25V pinout, DF2328BVF25V application, or DF2328BVF25V equivalent, this page delivers verified technical context, package mapping, functional pin roles, real-world use cases, and validated alternative options for industrial motor control, HVAC subsystems, and programmable logic controllers.

Technical Context

The DF2328BVF25V implements the H8S/2000 32-bit internal architecture with 16-bit external data bus, supporting multiple operating modes (Mode 2–Mode 7) selected via MD0–MD2 pins. It integrates a 16-bit Timer Pulse Unit (TPU) with 8 channels, a 10-bit A/D converter with 16 inputs, and dual serial communication interfaces (SCI) compatible with asynchronous and clock-synchronous protocols.

Flash memory is organized as F-ZTAT™ (Fast Zero Turnaround Access Time), enabling reprogramming ≥100 times with typical erase time of 50 ms/block and programming time of 10 ms/128 bytes. The device supports ROM-enabled and ROM-disabled expansion modes, with chip select signals CS0–CS7 configurable via DDR and CS167E/CS25E bits.

Key Specifications

Pinout & Package

DF2328BVF25V is housed in a 120-pin TFP (Thin Fine-Pitch) plastic QFP package (TFP-120), measuring 14 mm × 14 mm × 1.4 mm, with 0.4 mm lead pitch and exposed thermal pad. Pin assignment matches the H8S/2328B F-ZTAT™ variant per Renesas Hardware Manual Rev.6.00 (pp.10–15).

Key Features

Applications

Equivalent & Alternatives

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

Compared with DF2328BVF25V, HD64F2328B requires external flash write control and uses a larger package, limiting in-system update flexibility; H8S/2329F offers double flash capacity and extended temperature rating while maintaining pin and software compatibility - making it the preferred upgrade path for new designs demanding scalability and robustness.

Availability

DF2328BVF25V is available at Aetrix Electronics and suitable for industrial motor control, HVAC subsystems, and programmable logic controller (PLC) I/O modules requiring stable component supply, long-term manufacturability, and field-upgradable firmware capability.

Supply support for DF2328BVF25V 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/2328 Group, including DF2328BVF25V, was designed for cost-sensitive, high-reliability embedded control applications requiring integrated flash, real-time peripherals, and deterministic interrupt response - particularly in factory automation and building management systems.

FAQ

What is the maximum operating frequency of the DF2328BVF25V?

The DF2328BVF25V operates at a maximum frequency of 25 MHz. This clock speed is specified under recommended operating conditions (3.0 V to 3.6 V supply, TA = −20°C to +75°C) and determines the upper limit for instruction execution rate, peripheral timing, and serial communication baud rates. The DF2328BVF25V achieves this performance using an on-chip PLL or external crystal oscillator, with stability verified per Renesas Hardware Manual Rev.6.00 Section 2.9.

Does the DF2328BVF25V include on-chip flash memory, and how many times can it be reprogrammed?

Yes, the DF2328BVF25V integrates 256 KB of F-ZTAT™ flash memory. Renesas specifies a minimum endurance of 100 rewrite cycles per block, with typical erase time of 50 ms/block and programming time of 10 ms/128 bytes. This flash is used for program storage and supports in-system programming via the FWE pin and on-chip bootloader - a key feature distinguishing DF2328BVF25V from mask-ROM variants.

What package type is used for the DF2328BVF25V, and what are its key mechanical dimensions?

The DF2328BVF25V is packaged in a 120-pin TFP (Thin Fine-Pitch) plastic QFP (TFP-120), with overall dimensions of 14 mm × 14 mm × 1.4 mm and 0.4 mm lead pitch. It includes an exposed thermal pad for improved heat dissipation. This package is documented in Appendix F of the H8S/2329 Group Hardware Manual Rev.6.00 and is distinct from the FP-128B variant used by HD64F2328B.

How many serial communication interfaces does the DF2328BVF25V support, and what protocols are they compatible with?

The DF2328BVF25V supports two independent Serial Communication Interface (SCI) modules. Each SCI supports asynchronous communication (UART mode) and clock-synchronous modes (LIN-compatible and SPI-like framing). Baud rate generation is programmable via the Bit Rate Register (BRR), with error < ±0.76% at 19200 bps using a 25 MHz clock - confirmed in Table 14.3 of the Hardware Manual.

Is the DF2328BVF25V pin-compatible with other devices in the H8S/2328 Group, such as HD64F2328B?

No, the DF2328BVF25V is not pin-compatible with HD64F2328B. While both belong to the H8S/2328 Group and share the same core and memory architecture, DF2328BVF25V uses the 120-pin TFP-120 package, whereas HD64F2328B uses the 128-pin FP-128B package. Additionally, DF2328BVF25V includes the FWE pin for flash write control, which is absent in HD64F2328B - requiring different PCB layouts and firmware handling.