Renesas DF3052BF25V

Overview

DF3052BF25V from Renesas Electronics is a 16-bit microcontroller based on the H8/300H CPU core, featuring 512 KB on-chip flash memory (F-ZTAT), 32 KB RAM, 16-bit ITU timer, ISO/IEC 7816-3 smart card interface, and dual SCI channels. It operates at up to 18 MHz with 5 V supply and supports seven flexible memory bus modes for heterogeneous memory interfacing. It targets embedded control in industrial instrumentation and secure peripheral interfaces.

For engineers reviewing the DF3052BF25V datasheet, DF3052BF25V pinout, DF3052BF25V application, or DF3052BF25V equivalent, key selection criteria include its 100-pin QFP package, integrated smart card controller, programmable timing pattern controller (TPC), flash endurance (100 write/erase cycles), and software standby power management - all critical for secure, low-maintenance embedded systems.

Technical Context

The DF3052BF25V implements the H8/300H 32-bit internal architecture with sixteen 16-bit general-purpose registers and linear 16-Mbyte address space. Its on-chip peripherals include a refresh controller, DMAC, watchdog timer, A/D converter (10-bit, 8-channel), D/A converter (8-bit, 2-channel), and dual serial communication interfaces - one enhanced for ISO/IEC 7816-3 smart card protocols.

It supports seven operating modes (Modes 1–7) with independent data bus width (8/16-bit) and address space size configuration per memory area. The F-ZTAT flash enables in-system programming with zero turn-around time, and individual module standby control allows fine-grained power optimization in battery-sensitive applications.

Key Specifications

Pinout & Package

DF3052BF25V is housed in a 100-pin plastic quad flat package (QFP), package code FP-100B, with 0.65 mm lead pitch and 14 mm × 14 mm body size. Pin 1 is designated VCL (capacitor connection for internal voltage regulation), requiring an external 0.1 µF capacitor to ground.

Key Features

Applications

Equivalent & Alternatives

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

Compared with HD64F3048F, DF3052BF25V adds smart card support and TPC at higher memory density; compared with R5F566TEADFP, it offers direct ISO/IEC 7816-3 hardware acceleration but trades 32-bit performance and larger memory for proven 16-bit determinism and lower power in constrained designs.

Availability

DF3052BF25V is available at Aetrix Electronics and suitable for industrial data loggers, secure access terminals, medical diagnostic instruments, and PLC I/O modules requiring stable component supply, long-term lifecycle assurance, and mature toolchain support.

Supply support for DF3052BF25V 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 H8/3052B F-ZTAT product line was designed for cost-sensitive, high-reliability embedded control applications requiring on-chip flash programmability, mixed-signal capability, and standardized smart card interfacing - particularly in instrumentation and secure peripherals.

FAQ

What is the maximum operating frequency of the DF3052BF25V?

The DF3052BF25V supports a maximum system clock frequency of 18 MHz. This rating applies under standard operating conditions (VCC = 5.0 V ±10%, Ta = –20°C to +75°C). The device includes programmable clock dividers to scale down the system clock for power-sensitive operation, and timing parameters such as ITU delay (≤50 ns) and A/D conversion time (5.36 µs at ≤13 MHz) are specified accordingly in the electrical characteristics table.

Does the DF3052BF25V support ISO/IEC 7816-3 smart card communication?

Yes, the DF3052BF25V integrates hardware support for ISO/IEC 7816-3 on one of its two SCI channels. This includes automatic baud rate detection, guard time generation, and T=0/T=1 protocol handling - eliminating the need for external level shifters or software bit-banging. The feature is confirmed in the Hardware Manual Rev. 3.00 (page v) and register-level documentation for SMR and related smart card control registers.

What package type and pin count does the DF3052BF25V use?

The DF3052BF25V uses a 100-pin plastic quad flat package (QFP) with package code FP-100B, measuring 14 mm × 14 mm with 0.65 mm lead pitch. Pin 1 is VCL and requires an external 0.1 µF capacitor to ground. This package is distinct from the TQFP variant (HD64F3052BTE, TFP-100B) and is documented in Appendix G and Table F.1 of the H8/3052B F-ZTAT Hardware Manual.

How many write/erase cycles does the on-chip flash memory of the DF3052BF25V support?

The on-chip F-ZTAT flash memory in the DF3052BF25V supports a minimum of 100 write/erase cycles, with guaranteed data retention of 10 years when programmed within specification. These values are specified in Table 21.10 (Flash Memory Characteristics) of the Hardware Manual Rev. 3.00, and apply under standard operating conditions (Ta = –20°C to +75°C, VCC = 5.0 V ±10%).

What are the key power management features of the DF3052BF25V?

The DF3052BF25V provides software-controlled power management via multiple mechanisms: individual module standby (ITU, SCI, A/D, etc.), programmable system clock division (DIV1/DIV0 bits), and hardware-triggered software standby mode with configurable wake-up latency. These features allow current draw to be reduced to sub-mA levels during idle periods - critical for battery-powered instrumentation and portable diagnostics equipment using the DF3052BF25V.