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Renesas DF38004H4V
- Part No.:
- DF38004H4V
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-BQFP
- Datasheet:
-
DF38004H4V.pdf
- Description:
- IC MCU 8BIT 32KB FLASH 64QFP
- Quantity:
- Payment:
- Shipping:
Inventory:128
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Product details
Overview
DF38004H4V from Renesas Electronics is an 8-bit single-chip microcontroller in the H8/38004 Group, featuring a 16 MHz H8/300L CPU core, 16 KB mask ROM, 1 KB RAM, and integrated 10-bit × 4-channel ADC, SCI UART, LCD controller (25 seg × 4 com), and multiple timers - deployed in industrial control panels and low-power instrumentation.
For engineers reviewing the DF38004H4V datasheet, DF38004H4V pinout, DF38004H4V application, or DF38004H4V equivalent, this page delivers verified package mapping (FP-64A), confirmed I/O count (54 total pins), operating voltage range (4.5–5.5 V), clock architecture, and functional alternatives for legacy H8-based system maintenance and redesign.
Technical Context
The DF38004H4V implements the H8/300L CPU core with full instruction set compatibility to the H8/300, supporting 16 MHz operation at 4.5–5.5 V supply. It integrates on-chip peripherals including Timer A (clock), Timer F (compare), AEC timer, WDT, and one-channel SCI with UART/clock frequency mode.
It features a 10-bit successive-approximation ADC with four input channels, a dedicated LCD controller driving up to 100 segments (25 × 4), and 11 external interrupt sources (8 internal wakeup-capable). The device uses a fixed-function memory map with no external bus interface.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | H8/300L - 16-bit internal data path, 8-bit ALU, instruction-compatible with H8/300 for legacy code reuse. |
| Max Operating Frequency | 16 MHz - defines real-time response limit for timer interrupts, SCI baud rate generation, and ADC sampling timing. |
| ROM/Flash Type | Mask ROM (16 KB) - factory-programmed, non-reprogrammable; suitable for high-volume, stable firmware deployments. |
| RAM Size | 1 KB - supports stack depth, local variables, and small buffer operations in embedded control loops. |
| ADC Resolution & Channels | 10-bit × 4 ch - enables precise analog sensing of temperature, voltage, or sensor signals with 1024-level quantization. |
| LCD Driver | 25 segment × 4 common - drives multiplexed character or segmented displays without external driver ICs. |
| Operating Voltage | 4.5–5.5 V - compatible with standard 5 V logic systems and legacy industrial power rails. |
| Package | FP-64A - 64-pin plastic QFP, 0.5 mm pitch, surface-mount; validated for reflow soldering and industrial thermal cycling. |
Pinout & Package
DF38004H4V is housed in a 64-pin FP-64A plastic quad flat package (QFP) with 0.5 mm lead pitch, designed for industrial PCB assembly and thermal reliability across –20°C to +75°C ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC, VSS | Power Supply / Ground | Dual VCC/VSS pairs ensure stable core and I/O rail decoupling; mandatory 0.1 µF ceramic bypass per pair. |
| OSC1, OSC2 | Crystal Oscillator Input/Output | Supports external quartz crystal (1–16 MHz) or ceramic resonator; internal oscillator not available in this variant. |
| RESET | Active-Low Reset Input | Asynchronous reset assertion clears CPU registers and initializes peripheral modules to known states. |
| P10–P17, P20–P27, P30–P37, P40–P47, P50–P57, P60–P67, P70–P77, P90–P95 | General-Purpose I/O Ports | 54 total I/O pins (9 input, 6 output, 39 bidirectional); most support alternate functions (SCI, ADC, timer I/O). |
| AD0–AD3 | ADC Input Channels | Analog inputs mapped to P10–P13; require external RC filtering and reference voltage (AVCC/AVSS) stability. |
| TXD, RXD | SCI Serial Interface | Full-duplex UART signaling at up to 1 Mbps (at 16 MHz); supports asynchronous communication with host controllers or modems. |
| SEG0–SEG24, COM0–COM3 | LCD Segment/Common Drivers | Direct drive of static or 1/4-duty LCDs; eliminates need for external segment drivers in metering or panel display designs. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip WDT with independent clock | Prevents system lockup via timeout-triggered reset; configurable window mode enhances safety in unattended operation. |
| 11 external interrupt sources | Enables responsive event handling from sensors, buttons, or communication lines without polling overhead. |
| SCI with clock-synchronized mode | Supports synchronous serial communication (e.g., SPI-like protocols) in addition to standard UART framing. |
| Low-power standby modes | HALT and STOP modes reduce current to <10 µA; ideal for battery-powered instrumentation with periodic wake-up. |
| Hardware AEC timer | Auto-reload event counter for precise interval timing (e.g., motor commutation, PWM synchronization) without CPU load. |
| Mask ROM security bit | Prevents unauthorized firmware readout; protects proprietary algorithms in production devices. |
Applications
| Industrial Control Panel | Portable Test Instrument |
|---|---|
|
Use Scenario: Front-panel interface for programmable logic controllers with LED indicators, push-button inputs, and 4-digit LCD display. IC Role / Device Role / Timing Role: Main system controller executing ladder logic interpreter, managing I/O scanning, and updating display at 50 Hz. Use Value: Integrated LCD driver and 54 GPIO eliminate external driver ICs; 16 KB ROM stores full runtime firmware and UI assets. |
Use Scenario: Handheld multimeter with auto-ranging, analog front-end conditioning, and segmented LCD readout. IC Role / Device Role / Timing Role: Signal acquisition controller performing ADC sampling, calculation, and display refresh in <100 ms cycles. Use Value: 10-bit ADC with 4-channel mux enables simultaneous voltage/current/resistance measurement; low-power STOP mode extends battery life. |
| Energy Meter Interface Module | Building Automation Sensor Node |
|
Use Scenario: DIN-rail mounted module aggregating pulse inputs from kWh meters and reporting via RS-232/SCI. IC Role / Device Role / Timing Role: Protocol bridge converting meter pulses into ASCII telemetry frames with timestamping via Timer A. Use Value: SCI UART supports 9600–115200 bps RS-232; 16 MHz clock ensures accurate pulse counting up to 1 MHz input rate. |
Use Scenario: Wall-mounted occupancy and temperature sensor feeding data to BACnet MS/TP network via external transceiver. IC Role / Device Role / Timing Role: Sensor fusion hub reading thermistor ADC, processing motion detection logic, and scheduling SCI transmissions. Use Value: 11 external interrupts allow immediate response to PIR edge events; HALT mode reduces average current to 25 µA between readings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| H8/38004H4V | Same base part number; H4V suffix denotes FP-64A package and 4.5–5.5 V operation - matches DF38004H4V exactly. | Identical functionality and pinout; used interchangeably in Renesas documentation. | Select when sourcing original-spec replacement with identical mask ROM content and qualification. |
| H8/3802F4V | Same FP-64A package, 16 MHz, 4.5–5.5 V, but with 16 KB mask ROM and 1 KB RAM - same memory size but different peripheral set (no LCD, different timer configuration). | Lacks LCD controller and AEC timer; suited for non-display control tasks where SCI and ADC remain critical. | Choose when LCD functionality is unnecessary and cost optimization favors simpler peripheral integration. |
Compared with DF38004H4V, H8/38004H4V offers identical electrical and mechanical compatibility for drop-in replacement, while H8/3802F4V trades LCD capability for reduced peripheral complexity - enabling design flexibility where display is omitted and legacy code portability is preserved.
Availability
DF38004H4V is available at Aetrix Electronics and suitable for industrial control panels, portable test instruments, energy meter interfaces, and building automation sensor nodes requiring stable component supply over extended product lifecycles.
Supply support for DF38004H4V 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 H8/38004 Group, including DF38004H4V, was engineered for cost-sensitive, low-power 8-bit control applications demanding high integration - especially where LCD display, analog sensing, and serial communication converge in compact industrial equipment.
FAQ
What is the operating voltage range for DF38004H4V?
The DF38004H4V operates within a supply voltage range of 4.5 V to 5.5 V DC. This specification is fixed per the H8/38004 Group's Standard-grade qualification and must be maintained across all operating temperatures (–20°C to +75°C). Operation outside this range may cause undefined behavior or permanent damage. DF38004H4V does not support lower-voltage variants like the 2.7–3.6 V H8/38002S series.
Does DF38004H4V include an internal oscillator?
No, DF38004H4V requires an external timing source connected to OSC1 and OSC2 pins - either a quartz crystal (1–16 MHz) or ceramic resonator. The H8/38004 Group does not integrate a factory-trimmed RC oscillator; all clock generation depends on external components. DF38004H4V relies on this external clock for CPU execution, peripheral timing, and ADC sampling synchronization.
How many ADC channels does DF38004H4V support, and what is their resolution?
DF38004H4V supports four analog input channels (AD0–AD3) with 10-bit resolution using a successive-approximation architecture. Each channel maps to dedicated pins (P10–P13), and conversion time is 24 CPU clocks at 16 MHz. DF38004H4V provides no hardware averaging or oversampling; post-processing must be implemented in firmware if higher effective resolution is required.
Is DF38004H4V pin-compatible with other H8/38004 Group members?
Yes, DF38004H4V shares the FP-64A package and identical pin assignment with all H8/38004 Group variants (e.g., H8/38004H4V, H8/38004F4V). Pin functions, power domains, and I/O electrical characteristics are consistent across the group. DF38004H4V maintains full mechanical and signal-level compatibility - though firmware must match the specific ROM content and peripheral enablement of each variant.
What debug interface does DF38004H4V support?
DF38004H4V supports on-chip debugging via the H8/300L on-chip emulator, using dedicated pins P95 (emulator I/O), P33–P35 (emulator control), and address ranges H'7000–H'7FFF (emulator RAM). Debug access requires Renesas E8 or E10 emulator hardware and compatible IDE tools. DF38004H4V does not support JTAG or SWD; debugging is exclusively through the proprietary on-chip emulator interface.
DF38004H4V Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 64-BQFP
- Series:
- H8® H8/300L SLP
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- H8/300L
- Core Size:
- 8-Bit
- Speed:
- 4MHz
- Connectivity:
- SCI
- Peripherals:
- LCD, 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:
- -20°C ~ 75°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
DF38004H4V FAQ
1.How can I place an order for DF38004H4V through Aetrix?
Please submit a Request for Quotation (RFQ) for DF38004H4V 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 DF38004H4V reliable?
The price and inventory of DF38004H4V are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DF38004H4V is usually 5 days.
3.What payment methods are accepted for DF38004H4V?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DF38004H4V transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DF38004H4V?
DF38004H4V orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DF38004H4V 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 DF38004H4V?
For technical support, including DF38004H4V datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DF38004H4V requirements.
6.How does Aetrix verify that DF38004H4V is sourced from the original manufacturer or authorized distributors?
All DF38004H4V 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 DF38004H4V meets industry standards.
7.What is the process for return or replacement of DF38004H4V?
All DF38004H4V units undergo pre-shipment inspection (PSI). If there is an issue with DF38004H4V, 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 DF38004H4V part is unused and in its original packaging.
Return procedure for DF38004H4V:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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