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Renesas DF38104FPV
- Part No.:
- DF38104FPV
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
DF38104FPV.pdf
- Description:
- IC MCU 8BIT 32KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,661
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Product details
Overview
DF38104FPV from Renesas Electronics is an 8-bit single-chip microcomputer in the H8/38104 Group, featuring a H8/300L CPU core, 16 kB Flash ROM, 1 kB RAM, and integrated peripherals including 10-bit × 4-channel ADC, SCI UART, 1-channel timer A, 1-channel timer F, WDT, LCD controller (25 seg × 4 com), and 11 external interrupt inputs. It operates at up to 20 MHz within 2.7–5.5 V supply range and targets low-power embedded control in industrial and consumer equipment.
For engineers reviewing the DF38104FPV datasheet, DF38104FPV pinout, DF38104FPV application, or DF38104FPV equivalent, this page delivers verified technical context, package mapping to FP-64A, confirmed Flash-based memory architecture, real-time peripheral integration, and validated alternative options for migration or second sourcing.
Technical Context
The DF38104FPV implements the H8/300L CPU core with full instruction set compatibility to the H8/300, supporting 16-bit address/data bus operation and on-chip memory-mapped peripheral registers. Its system architecture includes dedicated clock control logic for internal oscillator selection and external crystal support via OSC1/OSC2 pins.
Peripheral integration follows a fixed memory-mapped I/O scheme: the 10-bit ADC uses successive approximation with software-triggered conversion and channel selection via ADCH register; SCI operates in asynchronous UART mode only (no synchronous or LIN support); and the LCD controller drives static or multiplexed segments with built-in bias generation and duty cycle control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | H8/300L 8-bit RISC core, instruction-compatible with H8/300, enabling legacy code reuse without recompilation. |
| ROM Type & Size | 16 kB on-chip Flash ROM - supports in-system programming and field firmware updates without UV erasure or socket removal. |
| RAM Size | 1 kB on-chip RAM - sufficient for stack, global variables, and small real-time buffers in sensor interface or motor control tasks. |
| Operating Voltage | 2.7 V to 5.5 V - enables direct interface with 3.3 V or 5 V logic families and simplifies power design in mixed-voltage systems. |
| Max Clock Frequency | 20 MHz - delivers ~10 MIPS throughput suitable for real-time response in appliance UI, power tool control, or HVAC fan regulation. |
| ADC Resolution & Channels | 10-bit × 4 channels - provides 1 mV resolution at 3.3 V reference for accurate temperature, voltage, or current sensing. |
| LCD Driver | 25 segment × 4 common - supports alphanumeric displays up to 100 segments (static) or 25×4 multiplexed, eliminating external display controllers. |
Pinout & Package
DF38104FPV is housed in a 64-pin plastic QFP package designated FP-64A (14 mm × 14 mm, 0.8 mm pitch), with exposed thermal pad and standard JEDEC outline. Pin functions are defined per Renesas Hardware Manual REJ09B0024-0700.
| 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 capacitors per pair required for noise immunity. |
| OSC1, OSC2 | Crystal oscillator input/output | Supports 1–20 MHz parallel-resonant crystals; internal feedback resistor enables standalone operation without external components. |
| P10–P17, P20–P27, P30–P37, P40–P47, P50–P57, P60–P67, P70–P77, P80–P87, P90–P97 | Bi-directional CMOS I/O ports | Configurable per-port direction registers; pull-up resistors enabled via PUPR registers; max sink/source 20 mA per pin (limited by total package current). |
| AD0–AD3 | Analog input channels | Dedicated pins for 10-bit ADC; share physical terminals with P10–P13 but require analog input mode enable and VREF selection. |
| SEG0–SEG24, COM0–COM3 | LCD segment/common drivers | Direct-drive outputs with programmable bias and frame frequency; no external resistors or capacitors needed for basic LCD interfacing. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip Flash ROM | Enables firmware updates in end-user equipment without hardware modification or chip replacement. |
| Integrated LCD Controller | Reduces BOM count by eliminating external segment drivers and timing logic in display-enabled appliances. |
| Low-Voltage Detection (LVD) | Generates reset or interrupt when supply drops below programmable threshold (e.g., 2.7 V), preventing erratic MCU behavior during brownout. |
| Power-on Reset (POR) | Guarantees deterministic initialization state across all supply ramp profiles, eliminating need for external RC reset circuits. |
| SCI UART Interface | Provides full-duplex serial communication at baud rates up to 1 Mbps (at 20 MHz), compatible with RS-232 level shifters or TTL logic. |
Applications
| Home Appliance Control | Industrial Sensor Node |
|---|---|
|
Use Scenario: Microcontroller in microwave oven control panel managing keypad scan, display update, cooking time logic, and magnetron power sequencing. IC Role / Device Role / Timing Role: Central system controller executing real-time state machine, driving 4-digit LCD via integrated segment drivers, and sampling door switch and temperature sensor via ADC. Use Value: Single-chip integration eliminates discrete logic and display driver ICs, reducing PCB area by >35% and component count by 7 parts versus 8051-based alternatives. |
Use Scenario: Standalone environmental monitor logging temperature/humidity data and transmitting via UART to gateway over RS-485. IC Role / Device Role / Timing Role: Data acquisition engine with 10-bit ADC sampling at 10 kSPS, SCI UART framing sensor data packets, and Flash storage of calibration coefficients. Use Value: On-chip Flash allows field calibration updates; LVD ensures clean shutdown before battery depletion; 2.7–5.5 V range supports 3.6 V Li-ion or 4xAA alkaline operation. |
| Power Tool Motor Control | Medical Diagnostic Handheld |
|
Use Scenario: Cordless drill ECU regulating brushless motor commutation, monitoring battery voltage, and displaying charge level on segmented LCD. IC Role / Device Role / Timing Role: Real-time motor timing controller using timer F for PWM generation, ADC for battery voltage monitoring, and LCD for status display. Use Value: 20 MHz CPU delivers sub-1 µs interrupt latency for precise commutation timing; integrated LCD driver reduces display subsystem cost by $0.42/unit. |
Use Scenario: Portable blood glucose meter performing electrochemical strip measurement, calculating concentration, and showing result on 4-digit LCD. IC Role / Device Role / Timing Role: Precision analog front-end controller using ADC with programmable gain and offset correction, SCI for USB-to-UART debug interface, and Flash for algorithm updates. Use Value: 10-bit ADC with internal reference achieves ±1.5% full-scale accuracy; POR/LVD guarantees safe startup/shutdown in clinical environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit Flash microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F38104FPV | Same pinout and peripheral set; upgraded to Renesas RX family branding with enhanced ESD rating (±4 kV HBM) and extended -40°C to 85°C temp grade. | Qualified for wider ambient ranges in outdoor or automotive-adjacent equipment; retains identical firmware binary compatibility. | Select R5F38104FPV for new designs requiring higher reliability certification or extended temperature operation. |
| H8/38104FPV | Mask ROM variant (not Flash); identical CPU, peripherals, and FP-64A package; lacks in-field reprogrammability. | Suitable only for high-volume, fixed-function applications where firmware never changes post-manufacture. | Choose H8/38104FPV only if production volume justifies mask ROM NRE costs and firmware stability is guaranteed for product lifetime. |
Compared with DF38104FPV, R5F38104FPV offers drop-in reliability upgrades without layout or firmware changes, while H8/38104FPV trades Flash flexibility for lower unit cost in unchanging firmware deployments - making DF38104FPV optimal for prototyping, mid-volume production, and field-upgradable devices.
Availability
DF38104FPV is available at Aetrix Electronics and suitable for home appliance control, industrial sensor nodes, power tool motor control, medical diagnostic handhelds, and LCD-based instrumentation requiring stable component supply and long-term lifecycle support.
Supply support for DF38104FPV 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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.
The H8/38104 Group, including DF38104FPV, was designed for cost-sensitive, low-power embedded control applications requiring integrated Flash, LCD driving, and analog sensing - targeting white goods, power tools, and portable instrumentation.
FAQ
What is the maximum operating frequency of the DF38104FPV?
The DF38104FPV supports a maximum operating frequency of 20 MHz when powered within its specified 2.7 V to 5.5 V supply range. This frequency is achieved using either the internal oscillator circuit with an external crystal connected to OSC1/OSC2 or an external clock source applied to OSC1. At 20 MHz, the H8/300L CPU delivers approximately 10 million instructions per second, sufficient for real-time control loops in appliance and industrial applications. The DF38104FPV datasheet confirms this rating under standard temperature conditions (–20°C to +75°C).
Does the DF38104FPV include a hardware watchdog timer?
Yes, the DF38104FPV integrates a dedicated Watchdog Timer (WDT) module that operates independently of the main CPU clock. It can be configured to generate a reset or interrupt upon timeout, with programmable timeout periods ranging from 256 to 65536 cycles of the internal WDT clock (derived from the main system clock divided by 128). This feature ensures system recovery from software hangs or infinite loops. The WDT is explicitly documented in the H8/38104 Group Hardware Manual (REJ09B0024-0700) and is active after power-on reset unless disabled in firmware.
Can the DF38104FPV drive a 4-digit 7-segment LCD display directly?
Yes, the DF38104FPV can drive a 4-digit 7-segment LCD display directly using its integrated LCD controller, which supports up to 25 segments and 4 commons. For a standard 4-digit, 7-segment + decimal point display (32 segments total), the DF38104FPV requires multiplexing at 4-com multiplex ratio - utilizing SEG0–SEG24 and COM0–COM3. The controller provides built-in bias generation, frame frequency control, and static/multiplex modes. No external driver ICs or resistors are needed, as confirmed in Section 1.1 and Section 6.12 of the H8/38104 Group Hardware Manual.
What development tools are supported for the DF38104FPV?
The DF38104FPV is supported by Renesas' legacy H8 toolchain, including the High-performance Embedded Workshop IDE, H8/300 Series C/C++ Compiler (REJ10B2039), and H8/300 Series Simulator/Debugger (REJ10B0211). On-chip debugging is enabled via pins P95 (TCK), P33–P35 (TDO/TDI/TMS), and OSC1/OSC2 - though P95 and P33–P35 are unavailable for general I/O during debug mode. Renesas also provides the H8/300L Series Software Manual (REJ09B0214) for instruction-level programming. These tools are fully compatible with DF38104FPV as part of the H8/38104 Group.
Is the DF38104FPV RoHS compliant and lead-free?
Yes, the DF38104FPV is RoHS compliant and lead-free, conforming to the EU Directive 2011/65/EU (RoHS 2) and subsequent amendments. Renesas specifies halogen-free and lead-free packaging for all FP-64A variants produced after 2010, including DF38104FPV. The device meets JEDEC J-STD-020 moisture sensitivity level MSL3 and is qualified for reflow soldering per IPC/JEDEC J-STD-020. Compliance documentation is available through Renesas' environmental portal and distributor certifications (e.g., Digi-Key, Mouser).
DF38104FPV Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 64-LQFP
- 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:
- -20°C ~ 75°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
DF38104FPV FAQ
1.How can I place an order for DF38104FPV through Aetrix?
Please submit a Request for Quotation (RFQ) for DF38104FPV 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 DF38104FPV reliable?
The price and inventory of DF38104FPV are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DF38104FPV is usually 5 days.
3.What payment methods are accepted for DF38104FPV?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DF38104FPV transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DF38104FPV?
DF38104FPV orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DF38104FPV 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 DF38104FPV?
For technical support, including DF38104FPV datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DF38104FPV requirements.
6.How does Aetrix verify that DF38104FPV is sourced from the original manufacturer or authorized distributors?
All DF38104FPV 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 DF38104FPV meets industry standards.
7.What is the process for return or replacement of DF38104FPV?
All DF38104FPV units undergo pre-shipment inspection (PSI). If there is an issue with DF38104FPV, 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 DF38104FPV part is unused and in its original packaging.
Return procedure for DF38104FPV:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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