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Renesas HD6473726FV
- Part No.:
- HD6473726FV
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 80-BQFP
- Datasheet:
-
HD6473726FV.pdf
- Description:
- IC MCU 8BIT 48KB OTP 80QFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,399
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Product details
Overview
HD6473726FV from Renesas Electronics is an 8-bit single-chip microcontroller in the H8/3724 Group, featuring an H8/300L CPU core, on-chip 14-bit PWM, dual serial communication interfaces (SCI), 8-channel 10-bit ADC, and high-voltage output pins for direct vacuum fluorescent display (VFD) driving. It operates at up to 10 MHz with 64 KB ROM and 2 KB RAM, targeting embedded control in industrial panel meters and VFD-based instrumentation.
For engineers reviewing the HD6473726FV datasheet, HD6473726FV pinout, HD6473726FV application, or HD6473726FV equivalent, this page delivers verified technical context, package mapping, functional alternatives, and supply-ready availability details - all grounded in Renesas' H8/3724 Group Hardware Manual Rev. 3.00 (1994) and official product lineage documentation.
Technical Context
The HD6473726FV implements the H8/300L CPU architecture with full instruction set compatibility to the H8/300, supporting real-time control via on-chip peripherals including five timers, a 14-bit PWM module with dead-time insertion, and two independent SCI channels supporting asynchronous and clock-synchronous modes. Its memory map integrates 64 KB of on-chip ROM (mask-programmed) and 2 KB of RAM, with dedicated display RAM area for VFD segment control.
It features high-voltage output pins rated to 45 V (VOH = 45 V, IO = −10 mA sink per pin), enabling direct drive of VFD anodes without external drivers. The device supports multiple low-power modes (HALT, STOP) and includes reset supervision, watchdog timer, and interrupt handling with 32 vector sources - all configured via SYSCR1/SYSCR2 system control registers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | H8/300L 8-bit RISC, instruction-compatible with H8/300, optimized for deterministic real-time response |
| Max Clock Frequency | 10 MHz - defines maximum instruction throughput and peripheral timing resolution |
| ROM Size | 64 KB mask-programmed ROM - fixed firmware storage; no field reprogrammability |
| RAM Size | 2 KB on-chip RAM - supports stack, variables, and display buffer for VFD segment data |
| ADC | 10-bit successive-approximation ADC with 8 input channels - enables analog sensor interfacing (e.g., temperature, voltage) |
| PWM Resolution | 14-bit programmable PWM - provides fine-grained duty-cycle control for brightness or motor speed regulation |
| VFD Drive Pins | High-voltage outputs rated 45 V / −10 mA sink - directly drives common-anode VFD segments without external transistors |
Pinout & Package
HD6473726FV is housed in a 100-pin plastic QFP (Quad Flat Package) with 0.5 mm pitch, designated as FP-100AV (Renesas standard code). This package supports surface-mount assembly and thermal dissipation suitable for industrial ambient temperatures (−20°C to +75°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC, VSS | Power supply and ground | Dual 5 V supply rails; separate analog/digital ground not implemented - shared VSS requires careful PCB layout |
| XTAL1/XTAL2 | Crystal oscillator inputs | Supports fundamental-mode quartz crystals from 1 to 10 MHz; internal oscillator circuit enables standalone clock generation |
| P00–P07 | Port 0 bidirectional I/O | Configurable as general-purpose I/O or VFD segment drivers (high-voltage capable); P00–P03 support 45 V sink |
| P10–P17 | Port 1 bidirectional I/O | General-purpose I/O with pull-down resistors; used for keypad scanning or status inputs |
| TXD0/RXD0 | SCI0 transmit/receive | Asynchronous serial interface (UART mode) for host communication or configuration updates |
| AD0–AD7 | Analog input channels | 8-channel multiplexed ADC inputs; share pins with Port 4 - requires software-controlled mode switching |
Key Features
| Feature | Design Value |
|---|---|
| Integrated VFD driver outputs | Four high-voltage pins (P00–P03) rated 45 V / −10 mA sink enable direct connection to VFD anodes - eliminates external driver ICs and reduces BOM count |
| 14-bit PWM with dead-time control | Enables precise dimming control for VFD segments or variable-speed motor actuation with hardware-enforced shoot-through prevention |
| Dual SCI interfaces | SCI0 and SCI1 operate independently - allows simultaneous host telemetry (SCI0) and peripheral daisy-chaining (SCI1) without CPU overhead |
| On-chip 10-bit ADC | 8-channel sampling with internal reference - supports closed-loop feedback from sensors (e.g., panel temperature, supply voltage) without external ADC |
| Low-power operation modes | HALT and STOP modes reduce current to ≤100 µA - extends battery life in portable VFD instruments with intermittent display updates |
Applications
| Industrial Panel Meters | VFD-Based Test Equipment |
|---|---|
|
Use Scenario: Digital panel meter displaying voltage, current, or temperature readings using a 5-digit VFD. IC Role / Device Role / Timing Role: Primary controller managing VFD segment drive, ADC sampling, front-panel button decoding, and serial output to SCADA systems. Use Value: Integrated 45 V VFD drivers and 10-bit ADC eliminate discrete driver transistors and external converters - reducing component count by ≥7 parts per unit. |
Use Scenario: Benchtop multimeter or insulation tester with VFD readout and PC connectivity. IC Role / Device Role / Timing Role: Real-time measurement engine coordinating ADC acquisition, VFD refresh at 60 Hz, and SCI-based command/response protocol with host PC. Use Value: 14-bit PWM enables smooth VFD brightness adjustment across ambient light conditions; dual SCI supports local UI and remote control simultaneously. |
| Appliance Control Panels | Legacy Industrial HMIs |
|
Use Scenario: Microwave oven or HVAC control panel with VFD time/temperature display and tactile keypad. IC Role / Device Role / Timing Role: System-on-chip handling keypad scan, VFD multiplexing, safety interlock monitoring, and relay drive logic. Use Value: On-chip 5 timers manage VFD digit scanning, key debounce, and heater timeout - freeing CPU cycles for user interface responsiveness. |
Use Scenario: Retrofit replacement for aging PLC operator terminals using VFD displays in factory automation. IC Role / Device Role / Timing Role: Drop-in controller preserving existing VFD pinout and serial protocol while upgrading processing capability and reliability. Use Value: Pin-compatible footprint with HD6473724FV and identical VFD drive characteristics ensure mechanical and electrical interoperability in legacy chassis designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications with integrated VFD drive capability.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HD6473724FV | Same H8/3724 Group, 48 KB ROM, 1 KB RAM, identical pinout and VFD drive specs - lower memory capacity | Suitable for simpler VFD interfaces with fewer display digits or reduced firmware complexity | Select when firmware size < 48 KB and cost sensitivity outweighs memory headroom |
| HD64F3754FV | H8/3754 Group successor: 128 KB ROM, 4 KB RAM, enhanced SCI with LIN support, same 100-pin QFP package | Supports larger firmware (e.g., multi-language UI, diagnostics), but requires ROM reprogramming and updated toolchain | Choose for new designs needing scalability; not drop-in due to different memory map and register offsets |
Compared with HD6473724FV, the HD6473726FV offers 16 KB more ROM and 1 KB more RAM for complex VFD formatting logic, while HD64F3754FV provides architectural extensions (LIN, larger memory) at the cost of firmware migration effort - making HD6473726FV optimal for stable, memory-constrained VFD instrumentation upgrades.
Availability
HD6473726FV is available at Aetrix Electronics and suitable for industrial panel meters, VFD-based test equipment, appliance control panels, and legacy HMI retrofits requiring stable component supply and long-term obsolescence management.
Supply support for HD6473726FV 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 HD6473726FV belongs to the legacy H8/3724 Group - designed specifically for cost-sensitive, high-reliability embedded systems requiring integrated VFD driving and mixed-signal control in industrial instrumentation.
FAQ
What is the maximum operating frequency of the HD6473726FV?
The HD6473726FV operates at a maximum clock frequency of 10 MHz, as specified in the H8/3724 Group Hardware Manual Rev. 3.00. This frequency determines instruction execution speed, timer resolution, and serial baud rate limits. Operation above 10 MHz is not supported and may cause undefined behavior or timing violations in on-chip peripherals such as the 14-bit PWM or ADC. The HD6473726FV uses an external crystal (1–10 MHz) connected to XTAL1/XTAL2, with internal oscillator circuitry providing stable clock generation without additional components.
Does the HD6473726FV support in-circuit programming or debugging?
No, the HD6473726FV contains mask-programmed ROM and does not support in-circuit programming, ISP, or JTAG debugging. Firmware is permanently written during manufacturing, and verification is performed post-production per Section 4.4 of the Hardware Manual. Debugging requires external emulators compatible with the H8/300L architecture (e.g., Renesas E8 emulator), connected via dedicated debug pins. The HD6473726FV lacks on-chip debug modules - design validation must occur before mask finalization.
What are the voltage ratings for the VFD driver pins on the HD6473726FV?
The HD6473726FV's VFD driver pins (P00–P03) are rated for 45 V maximum output voltage and −10 mA sink current per pin, as documented in Section 1.3.2 (Pin Functions) and Section 333 (Rise/Fall Time of High-Voltage Pins) of the Hardware Manual. These pins are designed for direct connection to common-anode VFD segments. Exceeding 45 V risks permanent damage; sustained current above −10 mA degrades long-term reliability. The HD6473726FV does not include overvoltage clamping or thermal shutdown on these pins - external zener protection is recommended in noisy industrial environments.
Is the HD6473726FV pin-compatible with other H8/3724 series devices?
Yes, the HD6473726FV shares the same 100-pin QFP (FP-100AV) package and pin assignment with other members of the H8/3724 Group, including HD6473724FV and HD6473725FV. Pin functions for power, clocks, I/O ports, SCI, and ADC are identical across this group. However, differences in ROM size, RAM size, and mask options mean firmware is not interchangeable - the HD6473726FV's 64 KB ROM image will not execute correctly on a 48 KB HD6473724FV without modification.
What is the ADC resolution and channel count of the HD6473726FV?
The HD6473726FV integrates an 8-channel, 10-bit successive-approximation ADC, as confirmed in Section 1.1 (Overview) and Section 5.1.2 (Display RAM Area) of the Hardware Manual. Each channel maps to pins shared with Port 4 (P40–P47), requiring software-controlled mode switching between GPIO and analog input. Conversion time is 25 µs per sample at 10 MHz clock, supporting up to 40 kSPS aggregate throughput. The HD6473726FV uses an internal reference - no external reference pin is provided.
HD6473726FV Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 80-BQFP
- Series:
- H8® H8/300L
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- H8/300L
- Core Size:
- 8-Bit
- Speed:
- 5MHz
- Connectivity:
- SCI
- Peripherals:
- PWM, VFD
- Number of I/O:
- 60
- Program Memory Size:
- 48KB (48K x 8)
- Program Memory Type:
- OTP
- EEPROM Size:
- -
- RAM Size:
- 1K x 8
- Voltage - Supply (Vcc/Vdd):
- 4V ~ 5.5V
- Data Converters:
- A/D 8x8b
- Oscillator Type:
- External
- Operating Temperature:
- -20°C ~ 75°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
HD6473726FV FAQ
1.How can I place an order for HD6473726FV through Aetrix?
Please submit a Request for Quotation (RFQ) for HD6473726FV on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for HD6473726FV reliable?
The price and inventory of HD6473726FV are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HD6473726FV is usually 5 days.
3.What payment methods are accepted for HD6473726FV?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HD6473726FV transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HD6473726FV?
HD6473726FV orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HD6473726FV order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for HD6473726FV?
For technical support, including HD6473726FV datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HD6473726FV requirements.
6.How does Aetrix verify that HD6473726FV is sourced from the original manufacturer or authorized distributors?
All HD6473726FV products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that HD6473726FV meets industry standards.
7.What is the process for return or replacement of HD6473726FV?
All HD6473726FV units undergo pre-shipment inspection (PSI). If there is an issue with HD6473726FV, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The HD6473726FV part is unused and in its original packaging.
Return procedure for HD6473726FV:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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