Renesas DF3048X16V

Overview

DF3048X16V from Renesas Electronics is a 16-bit microcontroller in the H8/3048 Group, featuring an H8/300H CPU core, 128 KB on-chip ZTAT PROM, 4 KB RAM, dual SCI channels (one supporting ISO/IEC 7816-3 smart card interface), and integrated 16-bit ITU timer. It operates at up to 18 MHz and targets embedded control applications requiring programmable nonvolatile memory with secure serial interface capability.

For engineers reviewing the DF3048X16V datasheet, DF3048X16V pinout, DF3048X16V application, or DF3048X16V equivalent, this device serves as a mask-ROM-replaceable, user-programmable MCU for industrial control panels, smart card readers, and legacy system upgrades where field-programmable PROM and ISO-compliant serial communication are required.

Technical Context

The DF3048X16V implements the H8/300H 32-bit internal architecture with sixteen 16-bit general-purpose registers and linear 16-Mbyte address space addressing. Its on-chip peripherals include a programmable timing pattern controller (TPC), watchdog timer (WDT), A/D and D/A converters, DMAC, and refresh controller - all synchronized to a software-controllable system clock divider.

It supports seven operating modes (Modes 1–7) with independent data bus width and access cycle configuration per memory area, enabling flexible interfacing with diverse external memory types. The ZTAT PROM allows zero-turnaround-time programming without UV erasure or external programmers, and the dedicated SCI channel provides hardware-level ISO/IEC 7816-3 protocol support including clock output, guard time control, and character timing compliance.

Key Specifications

Pinout & Package

DF3048X16V is housed in a 100-pin FP-100B or TFP-100B plastic QFP package with 0.5 mm lead pitch. Pin functions are defined across multiple operating modes, including single-chip, expanded bus, and special test configurations.

Key Features

Applications

Equivalent & Alternatives

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

Compared with HD64F3048 and H8/3048F-ONE, DF3048X16V uniquely balances field-programmability via ZTAT PROM, 5 V operation compatibility, and hardware ISO/IEC 7816-3 support - making it the only option among the three qualified for retrofitting into installed base smart card terminals requiring secure, infrequent firmware updates without hardware modification.

Availability

DF3048X16V is available at Aetrix Electronics and suitable for industrial control panels, smart card reader terminals, legacy system upgrade modules, embedded test instrument controllers, and secure peripheral interface applications requiring stable component supply and long-term obsolescence management.

Supply support for DF3048X16V 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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The H8/3048 Group - including DF3048X16V - was designed for cost-sensitive, high-reliability embedded control applications requiring field-upgradable firmware, secure serial interfaces, and mixed-signal integration without external support chips.

FAQ

What is the maximum operating frequency of the DF3048X16V?

The DF3048X16V supports a maximum system clock frequency of 18 MHz when using an external crystal oscillator connected to XTAL/EXTAL pins. This rating applies to the 5 V operation variant and is validated across commercial temperature range (0°C to +70°C). Operation above 16 MHz requires careful attention to power supply stability and PCB layout per Renesas Hardware Manual Rev. 7.00 Section 22.1. The DF3048X16V achieves deterministic instruction execution at this rate due to its zero-wait-state on-chip memory architecture.

Does the DF3048X16V support ISO/IEC 7816-3 smart card communication natively?

Yes, the DF3048X16V includes dedicated hardware support for ISO/IEC 7816-3 on its SCI1 channel, including programmable clock output (SCI1_CLK), guard time control, character timing compliance, and T=0 protocol framing. This functionality is implemented in silicon and does not require bit-banging or external timing components. The DF3048X16V's SCI1 module meets all electrical and timing requirements specified in ISO/IEC 7816-3:2006, enabling direct connection to contact-type smart cards without additional level-shifting or protocol translation ICs.

What type of nonvolatile memory does the DF3048X16V use, and how is it programmed?

The DF3048X16V uses 128 KB of on-chip ZTAT (Zero Turn-Around-Time) PROM, a one-time programmable (OTP) technology that allows in-system programming via standard VCC and VPP voltages without UV erasure. Programming is performed using byte-write instructions executed from RAM, with built-in verify cycles and adaptive timing algorithms. Unlike flash-based alternatives, the DF3048X16V's ZTAT PROM guarantees data retention for 20+ years and eliminates erase-cycle wear-out concerns - making it ideal for secure firmware storage in the DF3048X16V.

Is the DF3048X16V pin-compatible with other members of the H8/3048 Group?

Yes, the DF3048X16V shares identical pin assignment and mechanical footprint (FP-100B/TFP-100B) with HD6473048, HD6433048, and HD64F3048, as confirmed in Figure 1.2 of the H8/3048 Group Hardware Manual Rev. 7.00. All share the same 100-pin QFP layout, power pin locations (VCC/VSS), and primary peripheral signal mapping. However, functional differences exist - notably the DF3048X16V's ZTAT PROM versus flash or mask ROM - so firmware and power sequencing must be verified per device-specific electrical characteristics before substitution.

What development tools are supported for the DF3048X16V?

The DF3048X16V is supported by Renesas' High-performance Embedded Workshop (HEW) IDE with C compiler and debugger, along with the E8 emulator for in-circuit debugging. While the DF3048X16V itself does not integrate an on-chip emulator like the H8/3048F-ONE, it supports standard JTAG-based debugging via external emulators compatible with the H8/300H architecture. Renesas also provides ZTAT programming utilities and sample code libraries specifically validated for the DF3048X16V, including ISO/IEC 7816-3 initialization routines and A/D conversion drivers.