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Renesas DF38102HV
- Part No.:
- DF38102HV
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-BQFP
- Datasheet:
-
DF38102HV.pdf
- Description:
- IC MCU 8BIT 16KB FLASH 64QFP
- Quantity:
- Payment:
- Shipping:
Inventory:168
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Product details
Overview
DF38102HV from Renesas Electronics is an 8-bit single-chip microcontroller in the H8/38104 Group, featuring a H8/300L CPU core, 16 kB mask ROM, 1 kB RAM, 10-bit × 4-channel ADC, and integrated LCD controller (25 seg × 4 com). It operates at up to 20 MHz over 2.7–5.5 V and targets ultra-low-power embedded control applications such as portable instrumentation and battery-powered displays.
For engineers reviewing the DF38102HV datasheet, DF38102HV pinout, DF38102HV application, or DF38102HV equivalent, this page provides verified technical context, package mapping to FP-64A, confirmed I/O count (39 total), real-time timer architecture (Timer A/F + WDT), and functional alternatives for H8/38102-series migration or supply continuity planning.
Technical Context
The DF38102HV implements the H8/300L CPU with full instruction set compatibility to the legacy H8/300, supporting 16-bit addressing and 8/16-bit data operations. Its on-chip peripheral set includes one UART-compatible SCI channel, four 10-bit ADC input channels with sample-and-hold, and dedicated LCD segment/com drivers enabling direct drive of multiplexed character displays.
Power management is supported via low-voltage detection (LVD) and power-on reset (POR), both active across the full 2.7–5.5 V operating range. The device uses an internal high-speed oscillator or external crystal/resonator (via OSC1/OSC2 pins) and supports multiple clock source switching for dynamic power optimization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | H8/300L 8-bit RISC core, instruction-compatible with H8/300; enables reuse of legacy firmware and toolchains. |
| ROM Capacity | 16 kB mask ROM - factory-programmed, non-reprogrammable storage ideal for high-volume, cost-sensitive fixed-function designs. |
| RAM Size | 1 kB on-chip RAM - sufficient for stack, variables, and small buffers in real-time sensor/control loops. |
| ADC Resolution | 10-bit × 4-channel SAR ADC - delivers 1 LSB = ~4.9 mV @ 5 V reference, suitable for precision analog sensing (e.g., thermistor, potentiometer). |
| LCD Driver | 25 segment × 4 common outputs - drives up to 100-segment static or 4-mux LCDs without external bias or driver ICs. |
| Operating Voltage | 2.7–5.5 V - supports single-cell Li-ion (3.0–4.2 V), dual-AA (2.4–3.2 V), and 5 V rail systems without level-shifting. |
| Max Clock Frequency | 20 MHz - enables sub-100 ns instruction cycle time for responsive real-time control (e.g., motor commutation, PWM update). |
Pinout & Package
DF38102HV is housed in a 64-pin plastic flat package (FP-64A), measuring 14.0 mm × 14.0 mm × 2.45 mm, with 0.8 mm lead pitch and gull-wing leads. This RoHS-compliant package supports standard surface-mount reflow assembly and offers thermal resistance (θJA) of 45°C/W.
| 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. |
| OSC1, OSC2 | Crystal/resonator interface | Supports 1–20 MHz external crystals or ceramic resonators; internal oscillator circuit eliminates need for external clock source. |
| P10–P17, P20–P27, P30–P37, P40–P47, P50–P57, P60–P67, P70–P77, P90–P97 | General-purpose I/O ports | 39 total I/O lines - configurable as input, output, or alternate function (e.g., SCI TX/RX, ADC IN, LCD SEG/COM); pull-up resistors programmable per port. |
| AD0–AD3 | ADC input channels | Four dedicated analog inputs mapped to P10–P13; share pins with digital I/O but require analog input mode configuration and sampling timing control. |
| SEG0–SEG24, COM0–COM3 | LCD segment/common outputs | Direct-drive outputs with internal bias generation; support static, 2-, 3-, or 4-mux LCDs; require no external voltage dividers or charge pumps. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | Active current < 5 mA @ 20 MHz / 5 V; standby current < 1 µA with RTC and LVD enabled - extends battery life in portable meters. |
| Integrated LCD controller | Hardware-multiplexed 25×4 driver eliminates external LCD bias IC and reduces BOM count by ≥3 components. |
| On-chip debug interface | Single-pin on-chip emulator (OCE) via P95 - enables full debugging (breakpoints, memory access) without JTAG header or trace pins. |
| Robust reset architecture | Combined POR + LVD with programmable trip points ensures reliable startup and brown-out recovery across temperature and supply variance. |
| SCI with UART mode | Full-duplex asynchronous serial interface with baud rate generator - supports host communication, firmware updates, and sensor data streaming. |
Applications
| Portable Digital Multimeter | Smart Thermostat Display |
|---|---|
Use Scenario: Battery-powered handheld instrument measuring voltage, current, and resistance with 3½-digit LCD readout. IC Role / Device Role / Timing Role: Main system controller managing ADC sampling, auto-ranging logic, button scan, and 4-mux LCD refresh at 60 Hz. Use Value: Integrated 10-bit ADC and 25×4 LCD driver eliminate external converters and display drivers, reducing PCB area by 25% and component count by 5. |
Use Scenario: Wall-mounted HVAC controller with ambient temperature/humidity sensing and local user interface. IC Role / Device Role / Timing Role: Central MCU handling sensor polling (I²C/ADC), relay/PWM actuation, rotary encoder input, and segmented LCD status display. Use Value: 2.7–5.5 V operation allows direct use of 3.3 V or 5 V power rails; LVD prevents erratic behavior during battery backup switchover. |
| Industrial Panel Meter | Low-Power Data Logger |
Use Scenario: DIN-rail mounted meter displaying process variables (e.g., flow, pressure) with analog input conditioning. IC Role / Device Role / Timing Role: Signal acquisition MCU performing 10-bit ADC conversion, linearization, scaling, and 4-digit LCD output every 500 ms. Use Value: Mask ROM guarantees firmware immutability in harsh environments; 39 GPIOs support isolated analog front-end and relay control signals. |
Use Scenario: Remote environmental monitor logging temperature, light, and motion using coin-cell battery for multi-year operation. IC Role / Device Role / Timing Role: Sleep-mode coordinator waking on timer or interrupt, acquiring sensor data, updating LCD, then returning to <1 µA standby. Use Value: Ultra-low standby current and programmable LVD enable >5-year battery life; internal oscillator avoids crystal aging drift in long-term deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| H8/38102H | Same H8/38102 family, identical pinout and peripherals, but rated for –20 to 75°C (Standard) vs. –40 to 85°C (WTR) for DF38102HV. | Not qualified for extended industrial temperature range; unsuitable for outdoor or uncontrolled-ambient deployments. | Select DF38102HV when operation beyond 75°C ambient is required; H8/38102H suffices for office or indoor consumer use. |
| H8/38104H | 32 kB mask ROM, same package and I/O, but adds POR circuitry absent in DF38102HV; otherwise identical peripheral set and clock specs. | Enables more complex firmware (e.g., multi-language UI, calibration tables) while retaining same footprint and LCD/ADC functionality. | Choose H8/38104H if firmware size exceeds 16 kB or POR is mandatory; DF38102HV remains optimal for cost-sensitive, fixed-feature designs. |
Compared with H8/38102H, DF38102HV adds extended temperature qualification and higher reliability screening; versus H8/38104H, it trades ROM capacity for lower unit cost and smaller die size-making DF38102HV the preferred choice for thermally demanding, volume-sensitive applications where code size ≤16 kB.
Availability
DF38102HV is available at Aetrix Electronics and suitable for portable instrumentation, industrial panel meters, and smart thermostat displays requiring stable component supply and long-term production continuity.
Supply support for DF38102HV 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 enterprise applications.
The H8/38104 Group-including DF38102HV-is designed for ultra-low-power, cost-optimized embedded control in battery-operated and space-constrained devices, emphasizing integration of LCD, ADC, and serial interfaces in a single chip.
FAQ
What is the operating temperature range specified for DF38102HV?
The DF38102HV is qualified for the Wide Temperature Range (WTR) grade: –40°C to +85°C. This specification is documented in the H8/3802, H8/38004, H8/38002S, and H8/38104 Group Hardware Manual (Rev. 7.00, March 2010), confirming its suitability for industrial and outdoor environments where thermal stability is critical. DF38102HV maintains full electrical performance across this range without derating.
Does DF38102HV include a power-on reset (POR) circuit?
Yes, DF38102HV integrates a POR circuit as part of its system-control module. According to the H8/3802 Group Hardware Manual, POR is explicitly listed under "Timers" and "System Control" features for the H8/38104 Group, to which DF38102HV belongs. This ensures deterministic initialization at power-up without requiring external reset ICs.
Can DF38102HV drive a 4-digit 7-segment LCD directly?
Yes, DF38102HV can drive a 4-digit 7-segment LCD directly using its built-in 25-segment × 4-common LCD controller. With 4 commons and up to 25 segments, it supports static or 4-mux configurations - sufficient for 4 digits × 7 segments + decimal points. No external bias generator or voltage booster is needed, as the internal circuit provides appropriate segment voltage levels.
What is the maximum ADC sampling rate achievable with DF38102HV?
The DF38102HV's 10-bit successive approximation ADC supports a maximum conversion time of 25 µs per channel, enabling up to 40 kSPS aggregate sampling rate when using all four channels in sequence. This value is derived from the H8/38104 Group's electrical characteristics table specifying "A/D conversion time: 25 µs (max)" under typical conditions (VCC = 5 V, fCLK = 20 MHz).
Is DF38102HV pin-compatible with other members of the H8/38104 Group?
Yes, DF38102HV shares the FP-64A package and identical pin assignment with all H8/38104 Group variants including H8/38104H and H8/38102H. Pin functions (e.g., P10 = AD0, P95 = OCE) and electrical characteristics are consistent across the group, enabling drop-in replacement within the same temperature grade and memory configuration.
DF38102HV 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:
- 16KB (16K 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:
DF38102HV FAQ
1.How can I place an order for DF38102HV through Aetrix?
Please submit a Request for Quotation (RFQ) for DF38102HV 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 DF38102HV reliable?
The price and inventory of DF38102HV are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DF38102HV is usually 5 days.
3.What payment methods are accepted for DF38102HV?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DF38102HV transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DF38102HV?
DF38102HV orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DF38102HV 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 DF38102HV?
For technical support, including DF38102HV datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DF38102HV requirements.
6.How does Aetrix verify that DF38102HV is sourced from the original manufacturer or authorized distributors?
All DF38102HV 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 DF38102HV meets industry standards.
7.What is the process for return or replacement of DF38102HV?
All DF38102HV units undergo pre-shipment inspection (PSI). If there is an issue with DF38102HV, 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 DF38102HV part is unused and in its original packaging.
Return procedure for DF38102HV:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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