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Renesas HD64F3854HV
- Part No.:
- HD64F3854HV
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 100-BFQFP
- Datasheet:
-
HD64F3854HV.pdf
- Description:
- IC MCU 8BIT 60KB FLASH 100QFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,455
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Product details
Overview
HD64F3854HV from Renesas Electronics is an 8-bit F-ZTAT™ flash-based microcontroller in the H8/3854 Group, designed for embedded LCD display systems. It integrates a 4-channel A/D converter, single-channel SCI, 640-dot LCD controller, three timer types, and 32 KB on-chip flash ROM with 1 KB RAM - operating at up to 20 MHz with 3.0–5.5 V supply.
For engineers reviewing the HD64F3854HV datasheet, HD64F3854HV pinout, HD64F3854HV application, or HD64F3854HV equivalent, this device is selected for cost-sensitive, low-power industrial HMI, portable instrumentation, and consumer appliance control where post-mount programming and integrated display driving are required.
Technical Context
The HD64F3854HV implements the H8/300L CPU core with full instruction set compatibility to the H8/300. Its flash memory supports in-system programming via on-chip boot ROM, with 32-byte write granularity and block-wise erase (1 KB, 12 KB, 16 KB, or 28 KB configurable).
It features a dedicated LCD controller supporting static and 1/2–1/4 duty drive with 640-dot capacity, plus a 14-bit PWM channel (shared with Timer F), watchdog timer, and subclock generator for real-time clock operation using a 32.768 kHz crystal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | H8/300L 8-bit RISC, upward-compatible with H8/300 instruction set |
| Flash ROM | 32 KB - enables field firmware updates without mask ROM re-spin |
| RAM | 1 KB - sufficient for real-time sensor processing and display buffer management |
| LCD Controller | 640-dot max resolution - drives segment-based displays in consumer/industrial HMIs |
| A/D Converter | 4-channel, 10-bit - supports analog sensor inputs (temperature, voltage, light) directly |
| Serial Interface | 1 × SCI - provides UART-style communication for host MCU or PC interface |
| Supply Voltage | 3.0–5.5 V - compatible with standard logic rails and battery-powered operation |
| Max Operating Frequency | 20 MHz - delivers deterministic real-time response for control loops and display refresh |
Pinout & Package
HD64F3854HV is housed in a 100-pin FP-100B plastic QFP package (14 mm × 14 mm, 0.65 mm pitch), optimized for surface-mount assembly and thermal performance in compact industrial modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC, VSS | Power supply and ground | Dedicated digital power pins; decoupling required within 10 mm for stable 20 MHz operation |
| AVCC, AVSS | Analog power and ground | Isolated analog supply pins for A/D converter reference stability and noise immunity |
| XTAL, EXTAL | Main system oscillator inputs | Supports 1–20 MHz crystal or external clock source for CPU timing |
| CLKOUT | Clock output | Provides buffered system clock for trace/debug or peripheral synchronization |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up; requires ≥100 ns pulse width for reliable initialization |
| SCI_TXD / SCI_RXD | Serial transmit/receive | Full-duplex UART interface with programmable baud rate generation |
| SEG0–SEG15, COM0–COM3 | LCD segment/com common outputs | Direct drive capability for up to 64 segments × 4 commons (640 dots) |
| AD0–AD3 | Analog input channels | Four 10-bit A/D inputs with sample-and-hold; supports single- or continuous-conversion mode |
Key Features
| Feature | Design Value |
|---|---|
| F-ZTAT™ Flash Programming | Enables in-circuit programming after PCB assembly - eliminates pre-programmed part logistics |
| Integrated LCD Controller | Reduces BOM count by eliminating external display driver ICs in 640-dot applications |
| On-chip Watchdog Timer | Hardware reset supervision prevents lockup in unattended embedded systems |
| Subclock Generator | Supports 32.768 kHz crystal for RTC functionality without external timing IC |
| Low-Power Operating Modes | Subactive, subsleep, and watch modes reduce current to <10 μA - extends battery life |
| Peripheral Clock Gating | Selective clock disable for unused modules (SCI, A/D, LCD) cuts dynamic power consumption |
Applications
| Industrial HMI Panel | Portable Test Instrument |
|---|---|
Use Scenario: Standalone temperature/humidity monitor with segmented LCD display and push-button interface. IC Role / Device Role / Timing Role: Primary system controller executing sensor polling, data formatting, LCD refresh, and button debounce logic. Use Value: Integrated 4-channel A/D and 640-dot LCD controller eliminate external signal conditioning and display driver ICs - reducing board area and component count by ≥30%. |
Use Scenario: Handheld multimeter with auto-ranging, backlight control, and serial data logging. IC Role / Device Role / Timing Role: Real-time measurement engine managing ADC sampling, calculation, display update, and SCI-based PC upload. Use Value: F-ZTAT™ flash allows firmware calibration updates in production/test environments without rework - accelerating time-to-market for variant models. |
| Home Appliance Control | Energy Meter Display Module |
Use Scenario: Microwave oven control panel with keypad, LED indicators, and vacuum fluorescent display replacement. IC Role / Device Role / Timing Role: Central state machine coordinating cooking timers, safety interlocks, and user interface feedback. Use Value: 32 KB flash accommodates multi-language UI assets and safety-critical firmware revisions - meeting IEC 60730 Class B requirements. |
Use Scenario: DIN-rail mounted electricity meter with LCD showing kWh, voltage, and tariff information. IC Role / Device Role / Timing Role: Dedicated display subsystem controller interfacing with main metering SoC via SCI. Use Value: Subclock generator + RTC registers enable accurate time-of-use billing display without external timekeeping IC - lowering total system cost. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HD64F3854F | F-ZTAT™ version in TFP-100G (12×12 mm) package - same flash/RAM specs but smaller footprint | Better suited for space-constrained designs requiring identical firmware compatibility | Select HD64F3854F when PCB layout density is critical and thermal dissipation permits smaller package |
| HD6433854 | Mask ROM version (32 KB ROM, 1 KB RAM) - no field-programmable flash; lower unit cost at high volume | Appropriate for fixed-function, high-volume appliances where firmware never changes post-production | Choose HD6433854 only when firmware is finalized and long-term cost optimization outweighs programming flexibility |
Compared with HD64F3854F, the HD64F3854HV offers identical functionality in a larger FP-100B package for easier prototyping and thermal management; versus HD6433854, it trades non-volatile program storage flexibility for higher per-unit cost and longer lead times.
Availability
HD64F3854HV is available at Aetrix Electronics and suitable for industrial HMI, portable instrumentation, and home appliance control requiring stable component supply across extended product lifecycles.
Supply support for HD64F3854HV 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 IoT applications.
The H8/3854 Group - including HD64F3854HV - was engineered for cost-effective, low-power embedded control with integrated LCD driving and analog sensing, targeting consumer electronics and industrial human-machine interfaces.
FAQ
What is the maximum operating frequency of the HD64F3854HV?
The HD64F3854HV operates at up to 20 MHz when supplied with 3.0–5.5 V and using the main system oscillator. This frequency is supported across the full industrial temperature range (–20°C to +75°C) and enables real-time execution of display refresh, A/D conversion, and serial communication tasks without pipeline stalls.
Does the HD64F3854HV support in-system programming?
Yes, the HD64F3854HV supports in-system programming via its F-ZTAT™ flash memory. Using the on-chip boot ROM and SCI interface, firmware can be loaded and updated after soldering onto the target PCB - eliminating the need for socketed programming or external programmers during manufacturing or field service.
What LCD configurations does the HD64F3854HV support?
The HD64F3854HV's integrated LCD controller supports static, 1/2-duty, and 1/4-duty drive modes with up to 640 display dots (e.g., 16 segments × 4 commons). It includes dedicated SEG and COM output pins, internal bias generation, and software-controllable contrast adjustment - enabling direct connection to passive segment LCDs without external drivers.
How much RAM and flash memory does the HD64F3854HV include?
The HD64F3854HV integrates 32 KB of on-chip flash memory for program storage and 1 KB of SRAM for data and stack operations. This configuration balances code capacity for feature-rich firmware with low-power data retention - sufficient for real-time sensor processing, display buffering, and interrupt handling in resource-constrained embedded systems.
Is the HD64F3854HV pin-compatible with other H8/3854 Group members?
Yes, the HD64F3854HV shares the same 100-pin FP-100B package and pinout as other H8/3854 Group variants including HD6433854 and HD64F3854F. This allows hardware design reuse across mask ROM and flash versions - simplifying platform development and enabling firmware differentiation without PCB redesign.
HD64F3854HV Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 100-BFQFP
- 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:
- LCD, PWM
- Number of I/O:
- 24
- Program Memory Size:
- 60KB (60K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Data Converters:
- A/D 4x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -20°C ~ 75°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
HD64F3854HV FAQ
1.How can I place an order for HD64F3854HV through Aetrix?
Please submit a Request for Quotation (RFQ) for HD64F3854HV 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 HD64F3854HV reliable?
The price and inventory of HD64F3854HV are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HD64F3854HV is usually 5 days.
3.What payment methods are accepted for HD64F3854HV?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HD64F3854HV transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HD64F3854HV?
HD64F3854HV orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HD64F3854HV 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 HD64F3854HV?
For technical support, including HD64F3854HV datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HD64F3854HV requirements.
6.How does Aetrix verify that HD64F3854HV is sourced from the original manufacturer or authorized distributors?
All HD64F3854HV 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 HD64F3854HV meets industry standards.
7.What is the process for return or replacement of HD64F3854HV?
All HD64F3854HV units undergo pre-shipment inspection (PSI). If there is an issue with HD64F3854HV, 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 HD64F3854HV part is unused and in its original packaging.
Return procedure for HD64F3854HV:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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