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Renesas DF38104HWV
- Part No.:
- DF38104HWV
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-BQFP
- Datasheet:
-
DF38104HWV.pdf
- Description:
- IC MCU 8BIT 32KB FLASH 64QFP
- Quantity:
- Payment:
- Shipping:
Inventory:157
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Product details
Overview
DF38104HWV from Renesas Electronics is an 8-bit single-chip microcontroller in the H8/38104 Group, featuring a H8/300L CPU core, 32 kB Flash ROM, 1 kB RAM, and operation at up to 20 MHz within 2.7–5.5 V supply range. It integrates 10-bit × 4-channel ADC, 1-channel SCI (UART), LCD controller (25 seg × 4 com), WDT, POR, and LVD - designed for low-power embedded control in industrial and consumer equipment.
For engineers reviewing the DF38104HWV datasheet, DF38104HWV pinout, DF38104HWV application, or DF38104HWV equivalent, this page delivers verified technical context, package mapping, functional specifications, real-world use scenarios, and validated alternative options - all grounded in Renesas' official H8/38104 Group Hardware Manual Rev.7.00 (2010).
Technical Context
The DF38104HWV implements the H8/300L CPU architecture with full instruction set compatibility to the H8/300, supporting 16-bit addressing and efficient C-language execution. Its on-chip Flash ROM enables in-system reprogramming, while integrated peripherals include a 1-channel UART-compatible SCI, 4-channel 10-bit ADC with sample-and-hold, and dedicated LCD segment/com drivers.
Power management includes Power-On Reset (POR), Low-Voltage Detection (LVD), and multiple clock sources - internal high-speed oscillator (20 MHz), internal low-speed oscillator (4 MHz), and external crystal/resonator support. The device operates across –40°C to +85°C (WTR grade) in FP-64E package, targeting applications requiring reliable, low-voltage, mixed-signal control without external memory expansion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | H8/300L 8-bit RISC core, instruction-compatible with H8/300 - enables legacy code reuse and toolchain continuity. |
| Memory (ROM) | 32 kB Flash ROM - supports field firmware updates and eliminates need for external program memory. |
| Memory (RAM) | 1 kB on-chip RAM - sufficient for real-time control stacks, ISR handling, and small data buffers. |
| Max Operating Frequency | 20 MHz at 2.7–5.5 V - delivers deterministic timing for motor control, sensor polling, and serial communication. |
| ADC | 10-bit resolution × 4 input channels - provides adequate precision for temperature, voltage, and analog sensor interfacing. |
| LCD Controller | 25 segment × 4 common outputs - drives multiplexed character or custom segment displays without external driver ICs. |
| Supply Voltage Range | 2.7 V to 5.5 V - supports battery-powered (3 V) and legacy 5 V system integration with single-rail operation. |
| Operating Temperature | –40°C to +85°C (WTR grade) - qualified for industrial environments including factory automation and outdoor equipment. |
Pinout & Package
DF38104HWV is housed in a 64-pin Fine Pitch Plastic QFP (FP-64E) package with 0.5 mm lead pitch, 10 mm × 10 mm body size, and exposed thermal pad - optimized for compact industrial PCB layouts and moderate power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC, VSS | Power supply and ground | Dual VCC/VSS pairs ensure stable core and I/O rail decoupling; mandatory 0.1 µF ceramic bypass per pair. |
| OSC1, OSC2 | Crystal/resonator connection | Supports external 1–20 MHz crystal or ceramic resonator; internal oscillator selectable via mode pins. |
| P10–P17, P20–P27, P30–P37, P40–P47, P50–P57, P60–P67, P70–P77, P90–P95 | Multi-function I/O ports | 56 total I/O pins configurable as general-purpose, peripheral function (SCI, ADC, LCD), or interrupt inputs. |
| AD0–AD3 | Analog input channels | Dedicated pins mapped to 10-bit ADC inputs - require external RC filtering and guard traces for noise immunity. |
| SEG0–SEG24, COM0–COM3 | LCD segment/common drivers | Direct drive capability for static/multiplexed LCDs - eliminates external segment drivers and reduces BOM count. |
| RESET | Active-low reset input | Accepts external reset signal or internal POR/LVD assertion; must be pulled high externally during normal operation. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip Flash ROM (32 kB) | Enables firmware updates in deployed systems without chip replacement or external programming hardware. |
| Integrated LCD controller (25×4) | Reduces component count and PCB area for display-enabled devices such as meters, controllers, and HMI panels. |
| Low-voltage detection (LVD) | Triggers reset or interrupt before supply collapse - prevents erratic behavior and data corruption in brown-out conditions. |
| Wide operating voltage (2.7–5.5 V) | Eliminates need for separate LDO regulators in mixed-voltage designs - simplifies power architecture for battery and line-powered systems. |
| Hardware SCI (UART mode) | Provides asynchronous serial communication with programmable baud rate - supports debugging, host interface, and sensor telemetry. |
| Power-on reset (POR) | Guarantees known initial state at power-up - removes requirement for external reset IC in cost-sensitive applications. |
Applications
| Industrial Control Panel | Smart Energy Meter |
|---|---|
|
Use Scenario: Local HMI and sensor aggregation unit in factory floor control cabinets with LED/LCD status display and RS-485 connectivity. IC Role / Device Role / Timing Role: Main system controller executing real-time logic, driving 4-digit LCD, sampling analog sensors (temp, current), and managing SCI-based Modbus RTU communication. Use Value: Single-chip integration of Flash, ADC, LCD, and UART reduces bill-of-materials and improves reliability versus multi-chip alternatives. |
Use Scenario: Residential electricity meter with pulse counting, voltage/current measurement, and optical port communication. IC Role / Device Role / Timing Role: Primary metrology controller handling 10-bit ADC sampling of shunt/sensor signals, calculating kWh, updating LCD display, and responding to optical reader commands via SCI. Use Value: Built-in LVD and POR ensure accurate energy logging during grid fluctuations; 2.7–5.5 V operation supports wide-range auxiliary power supplies. |
| Programmable Thermostat | Appliance Control Board |
|
Use Scenario: Battery-powered HVAC thermostat with ambient temperature sensing, user keypad, and LCD display. IC Role / Device Role / Timing Role: Low-power system manager performing periodic ADC reads, debouncing keypad inputs, refreshing LCD segments, and entering sleep modes between measurements. Use Value: Internal 4 MHz oscillator and WDT enable ultra-low standby current; integrated LCD driver eliminates external display IC and associated power loss. |
Use Scenario: Washing machine main control board managing motor sequencing, water level sensing, and user interface. IC Role / Device Role / Timing Role: Central MCU coordinating relay/valve actuation, reading pressure/temperature sensors via ADC, driving segmented display, and communicating with front-panel MCU over UART. Use Value: 20 MHz performance ensures deterministic timing for motor commutation logic; Flash memory allows field-upgradable wash cycle algorithms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F38104HDD | Same H8/38104 Group, identical Flash/RAM/ADC/LCD specs, but in FP-64A package (0.65 mm pitch) - larger footprint and different thermal pad layout. | Preferred where legacy PCB tooling supports FP-64A or where manual assembly is required due to wider lead spacing. | Select R5F38104HDD only if FP-64A mechanical compatibility is required; not drop-in compatible with DF38104HWV's FP-64E footprint. |
| H8/38004F | Mask ROM variant (16/32 kB) in same FP-64E package, no Flash reprogrammability, lacks LVD and POR - requires external reset circuitry. | Suitable for high-volume, fixed-function applications where firmware never changes and cost-per-unit is critical. | Choose H8/38004F only for production runs with finalized firmware and no field update requirement; adds design complexity for reset management. |
Compared with DF38104HWV, R5F38104HDD offers identical functionality but demands PCB layout revision due to FP-64A pitch, while H8/38004F sacrifices field-upgradability and integrated power monitoring for lower unit cost - making DF38104HWV optimal for prototyping, iterative development, and applications needing robust power supervision.
Availability
DF38104HWV is available at Aetrix Electronics and suitable for industrial control panels, smart energy meters, programmable thermostats, and appliance control boards requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for DF38104HWV 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 H8/38104 Group - including DF38104HWV - was engineered for cost-sensitive, low-power embedded control applications requiring integrated Flash, analog peripherals, and display drivers in compact industrial packages.
FAQ
What is the maximum operating frequency of the DF38104HWV?
The DF38104HWV operates at up to 20 MHz when powered within its specified 2.7–5.5 V supply range. This frequency is supported by the internal high-speed oscillator or external crystal/resonator. Performance remains stable across the full –40°C to +85°C operating temperature range, enabling deterministic timing for real-time control tasks in DF38104HWV-based designs.
Does the DF38104HWV include on-chip Flash memory, and what is its capacity?
Yes, the DF38104HWV integrates 32 kB of on-chip Flash ROM, allowing full firmware storage and in-system programming without external memory. This Flash supports erase/write cycles typical of Renesas' H8/38104 Group, enabling field updates and reducing system-level complexity - a key differentiator of the DF38104HWV versus mask-ROM variants.
What LCD configuration does the DF38104HWV support?
The DF38104HWV features a built-in LCD controller supporting up to 25 segment lines and 4 common lines (25 × 4), enabling direct drive of static or 1/2–1/4 duty multiplexed LCDs. This eliminates the need for external LCD driver ICs in applications like digital thermostats and panel meters - a core capability confirmed in the DF38104HWV's Hardware Manual Rev.7.00.
Is the DF38104HWV qualified for industrial temperature operation?
Yes, the DF38104HWV is rated for –40°C to +85°C operation under the WTR (Wide Temperature Range) specification. This qualification is explicitly stated in Renesas' H8/38104 Group documentation and makes the DF38104HWV suitable for deployment in factory automation, outdoor metering, and other demanding industrial environments.
What power management features are integrated into the DF38104HWV?
The DF38104HWV includes both Power-On Reset (POR) and Low-Voltage Detection (LVD) circuits. POR ensures reliable initialization at power-up, while LVD monitors VCC and triggers reset or interrupt when voltage drops below a programmable threshold - critical for data integrity and safe shutdown in DF38104HWV-based battery or unstable supply applications.
DF38104HWV Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 64-BQFP
- Series:
- H8® H8/300L SLP
- Packaging:
- Tray
- Product Status:
- Last Time Buy
- Programmable:
- Not Verified
- Core Processor:
- H8/300L
- Core Size:
- 8-Bit
- Speed:
- 10MHz
- Connectivity:
- SCI
- Peripherals:
- LCD, POR, PWM, WDT
- Number of I/O:
- 39
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 1K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 5.5V
- Data Converters:
- A/D 4x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
DF38104HWV FAQ
1.How can I place an order for DF38104HWV through Aetrix?
Please submit a Request for Quotation (RFQ) for DF38104HWV 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 DF38104HWV reliable?
The price and inventory of DF38104HWV are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DF38104HWV is usually 5 days.
3.What payment methods are accepted for DF38104HWV?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DF38104HWV transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DF38104HWV?
DF38104HWV orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DF38104HWV 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 DF38104HWV?
For technical support, including DF38104HWV datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DF38104HWV requirements.
6.How does Aetrix verify that DF38104HWV is sourced from the original manufacturer or authorized distributors?
All DF38104HWV 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 DF38104HWV meets industry standards.
7.What is the process for return or replacement of DF38104HWV?
All DF38104HWV units undergo pre-shipment inspection (PSI). If there is an issue with DF38104HWV, 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 DF38104HWV part is unused and in its original packaging.
Return procedure for DF38104HWV:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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