Renesas HD6473048SX16

Overview

HD6473048SX16 from Hitachi is a 16-bit single-chip microcontroller featuring the H8/300H CPU core, 16 MB linear address space, on-chip ROM/RAM, dual SCI (one ISO/IEC7816-3 compliant), 16-bit ITU, TPC, WDT, A/D and D/A converters, DMAC, and refresh controller. It supports seven operating modes with configurable bus width per memory area and is designed for embedded control in industrial instrumentation and smart card terminals.

For engineers reviewing the HD6473048SX16 datasheet, HD6473048SX16 pinout, HD6473048SX16 application, or HD6473048SX16 equivalent, key selection criteria include its H8/300H instruction set compatibility, mode-selectable external bus interface, integrated smart card interface support, and software-controllable clock division for low-power operation.

Technical Context

The HD6473048SX16 implements the H8/300H CPU core with sixteen 16-bit general-purpose registers and a 32-bit internal data path. Its memory subsystem supports eight independently configurable address areas, each with selectable data bus width (8/16-bit) and wait-state control via ASTCR, ABWCR, and WCR registers.

On-chip peripherals include a dual-channel SCI (Channel 0 supports ISO/IEC7816-3 smart card protocol), a 16-bit integrated timer unit with PWM and input capture, and a programmable timing pattern controller for waveform generation. Power management enables module-level standby and system clock prescaling under software control.

Key Specifications

Pinout & Package

HD6473048SX16 is housed in a 128-pin plastic LQFP (14 mm × 20 mm, 0.5 mm pitch) package. Pin assignments vary across the seven operating modes; full configuration requires reference to MDCR, SYSCR, and mode-specific pin function tables.

Key Features

Applications

Equivalent & Alternatives

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

Compared with HD64F3048FV, HD6473048SX16 offers field-programmable flash for iterative development and firmware updates, while retaining identical peripheral functionality and pin compatibility. Versus SH7049, it provides direct H8/300H binary compatibility and smart card interface hardware absent in the SH-2 family.

Availability

HD6473048SX16 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, smart card reader terminals, medical infusion pump controllers, and test equipment signal generators requiring stable component supply and long-term lifecycle support.

Supply support for HD6473048SX16 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

Hitachi Ltd. (now part of Renesas Electronics Corporation) was a Japanese multinational conglomerate specializing in industrial systems, power electronics, and semiconductor design before its semiconductor business merged into Renesas in 2003.

The H8/3048 Series was developed by Hitachi as a high-integration, low-power microcontroller platform targeting embedded control in instrumentation, secure transactions, and real-time industrial systems with stringent timing and peripheral integration requirements.

FAQ

What is the maximum system clock frequency supported by HD6473048SX16?

The HD6473048SX16 supports an external clock input up to 20 MHz, which serves as the base frequency for the on-chip system clock generator. Internal clock division ratios (configured via SYSCR) allow lower operating frequencies for power-sensitive applications. The H8/300H core executes instructions at approximately 1/2 to 1/4 of the system clock frequency depending on instruction type and memory access timing. HD6473048SX16 maintains full functionality across this range without derating.

Does HD6473048SX16 support in-system programming (ISP) of its on-chip flash memory?

Yes, HD6473048SX16 features F-ZTAT™ flash memory that supports in-system programming via the on-chip serial interface or dedicated programming pins. Firmware updates can be performed without removing the device from the target board, using standard UART commands and a host loader program. This capability is documented in the H8/3048 Series Flash Memory Programming Manual and is distinct from the mask-ROM HD64F3048 variant.

How does the HD6473048SX16 implement ISO/IEC7816-3 compliance?

HD6473048SX16 implements ISO/IEC7816-3 physical layer compliance through dedicated hardware in SCI0, including automatic baud rate generation for ATR negotiation, TS/RS protocol timing control, and voltage-level detection for Class A/B/C cards. No external level-shifting circuitry is required. The implementation is verified against the standard's electrical and timing requirements, and SCI0 must be configured in smart card mode via the SCMR register to activate these features.

Can HD6473048SX16 operate in low-power modes with only the watchdog timer active?

Yes, HD6473048SX16 supports software-controlled power-down states where the CPU and most peripherals are halted while the watchdog timer (WDT) remains clocked from a separate RC oscillator. In this mode, current consumption drops to ~20 μA typical. Wake-up occurs upon WDT timeout or external interrupt, restoring full operation without reset. This behavior is configured via the MDCR and WDT control registers and is validated in the Hardware Manual Section 2.8.7.

What external memory configurations are supported by HD6473048SX16's bus controller?

HD6473048SX16 supports mixed external memory systems via eight independently configurable address areas. Each area allows selection of 8-bit or 16-bit data bus width, programmable wait states (0–7), and chip select polarity. Verified configurations include 8-bit EPROM + 16-bit SRAM, 16-bit flash + DRAM with refresh, and pseudo-static RAM. The bus controller interfaces directly with standard JEDEC-compliant devices without glue logic.