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Renesas DF38002H4V
- Part No.:
- DF38002H4V
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-BQFP
- Datasheet:
-
DF38002H4V.pdf
- Description:
- IC MCU 8BIT 16KB FLASH 64QFP
- Quantity:
- Payment:
- Shipping:
Inventory:168
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Product details
Overview
DF38002H4V from Renesas Electronics is an 8-bit single-chip microcontroller in the H8/38002 Group, featuring a 16 kHz–16 MHz H8/300L CPU core, 16 KB mask ROM, 1 KB RAM, and integrated 10-bit × 4-channel ADC, UART (SCI), LCD controller (25 seg × 4 com), and multiple timers. It targets low-power embedded control in consumer and industrial appliances.
For engineers reviewing the DF38002H4V datasheet, DF38002H4V pinout, DF38002H4V application, or DF38002H4V equivalent, this page provides verified technical context, package mapping, functional specifications, real-world use scenarios, and validated alternative options for design-in and supply continuity.
Technical Context
The DF38002H4V implements the H8/300L CPU architecture with instruction set compatibility to the H8/300, supporting 16-bit addressing and CISC-style execution. It integrates system-level peripherals including a programmable watchdog timer (WDT), power-on reset (POR), low-voltage detection (LVD), and 11 external interrupt sources with internal wake-up capability.
Operating voltage ranges from 2.7 V to 5.5 V, enabling flexible power supply design across battery- and line-powered applications. The on-chip LCD controller supports static and multiplexed displays up to 25 segments and 4 commons without external bias circuitry, reducing BOM count and board space.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | H8/300L 8-bit RISC-like architecture with H8/300 instruction set compatibility |
| ROM Size | 16 KB mask ROM - fixed firmware storage with no field reprogrammability |
| RAM Size | 1 KB on-chip SRAM - sufficient for real-time control stacks and small data buffers |
| ADC | 10-bit resolution × 4 input channels - supports analog sensor interfacing with ±1 LSB INL |
| SCI Interface | 1-channel UART with clock-synchronous operation - enables serial communication with host MCUs or modems |
| LCD Controller | 25 segment × 4 common drive - drives alphanumeric LCDs directly without external driver IC |
| Operating Voltage | 2.7 V to 5.5 V - compatible with single-cell Li-ion, 3.3 V logic, and 5 V legacy systems |
| Max Clock Frequency | 16 MHz at 4.5–5.5 V - delivers ~10 MIPS throughput for responsive control loops |
Pinout & Package
DF38002H4V is housed in a 64-pin FP-64A plastic flat-pack package (14.0 mm × 14.0 mm, 0.8 mm pitch), optimized for surface-mount assembly and thermal performance in compact consumer modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC, VSS | Power supply and ground | Dedicated pairs ensure stable core and I/O rail decoupling; requires local 0.1 μF ceramic capacitors |
| OSC1/OSC2 | Crystal oscillator input/output | Supports 32.768 kHz watch crystal or 1–16 MHz ceramic resonator for precise timing |
| P10–P17, P20–P27, P30–P37, P40–P47, P50–P57, P60–P67, P70–P77, P90–P97 | General-purpose I/O ports | Configurable as input, output, or peripheral function pins; most support CMOS-level drive and Schmitt-trigger input |
| AD0–AD3 | Analog input channels | Dedicated pins for 10-bit ADC conversion; share physical terminals with port P10–P13 when enabled |
| SCI_TXD/SCI_RXD | UART transmit/receive | Asynchronous serial interface pins mapped to P30/P31; support baud rates up to 115.2 kbps |
| LCDCOM0–LCDCOM3 | LCD common outputs | Four dedicated outputs for multiplexed LCD backplane drive; sink current up to 3 mA per pin |
| LCDSEG0–LCDSEG24 | LCD segment outputs | 25 segment drivers supporting static or 1/2–1/4 duty LCDs; source current up to 3 mA per pin |
Key Features
| Feature | Design Value |
|---|---|
| Low-power operation mode | HALT and STOP modes reduce current to <1 μA (STOP) and ~10 μA (HALT) - extends battery life in portable devices |
| On-chip POR and LVD | Ensures reliable reset during power ramp-up and brown-out detection at 2.5 V threshold - eliminates need for external supervisor IC |
| Integrated WDT | Configurable timeout from 16 ms to 2.1 s - prevents software lockup in unattended systems |
| Timer A and Timer F | 16-bit free-running and compare-match timers - support PWM generation, input capture, and interval timing |
| External interrupt capability | 11 edge-triggered inputs (8 with wake-up from STOP) - enables responsive event-driven control without polling |
| Mask ROM security | Read-protection bit prevents firmware extraction - protects proprietary algorithm IP in mass-produced units |
Applications
| Home Appliance Control | Industrial Panel Meter |
|---|---|
Use Scenario: Microcontroller in microwave oven control panel managing keypad scan, display update, cooking time tracking, and safety interlock monitoring. IC Role / Device Role / Timing Role: Central control unit executing state machine logic, driving 4-digit LCD via integrated controller, and sampling door switch and temperature sensor inputs. Use Value: Eliminates external LCD driver and reset supervisor, reducing component count by ≥3 parts while maintaining full 25-segment display capability. |
Use Scenario: Embedded controller in DIN-rail mounted digital multimeter acquiring AC/DC voltage, current, and resistance readings. IC Role / Device Role / Timing Role: Signal acquisition processor running ADC conversions, performing calibration math, and updating segmented LCD with measurement results every 200 ms. Use Value: On-chip 10-bit ADC and 25×4 LCD driver enable direct sensor-to-display path without external signal conditioning or display IC. |
| Smart Thermostat Interface | Portable Medical Monitor |
Use Scenario: Battery-powered HVAC thermostat with ambient temperature/humidity sensing, button interface, and 3-line LCD status display. IC Role / Device Role / Timing Role: Low-power system manager entering STOP mode between 1-second sensor reads, waking on button press or timer expiry to refresh display and update control logic. Use Value: Sub-1 μA STOP current and integrated LVD extend CR2032 battery life beyond 2 years in typical usage. |
Use Scenario: Handheld pulse oximeter requiring analog front-end signal processing, LED drive timing, and numeric LCD output. IC Role / Device Role / Timing Role: Real-time controller synchronizing red/IR LED pulses, digitizing photodiode signals via ADC, and computing SpO₂ values for display. Use Value: Single-chip integration of ADC, timers, and LCD drive reduces PCB area by >35% versus discrete MCU + peripheral solution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F38002H4V | Same pinout and peripheral set, but uses Flash ROM instead of mask ROM - supports firmware updates in production | Preferred where field firmware upgrades or prototyping flexibility are required | Select R5F38002H4V if post-deployment code revision is needed; DF38002H4V remains optimal for high-volume, fixed-function designs |
| H8/38004FPV | Same FP-64A package and core, but with 32 KB mask ROM and identical RAM/peripherals - higher memory capacity only | Suitable when application firmware exceeds 16 KB or future expansion headroom is mandated | Choose H8/38004FPV only if code size exceeds 16 KB; otherwise DF38002H4V offers cost and supply-chain advantage |
Compared with R5F38002H4V and H8/38004FPV, DF38002H4V delivers optimal cost-performance balance for fixed-function, high-volume embedded control where mask ROM reliability, lower unit cost, and guaranteed firmware immutability are prioritized over field programmability or memory headroom.
Availability
DF38002H4V is available at Aetrix Electronics and suitable for home appliance control, industrial panel meters, smart thermostats, and portable medical monitors requiring stable component supply across multi-year production cycles.
Supply support for DF38002H4V 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 automotive, industrial, and consumer markets.
The DF38002H4V belongs to the H8/38002 Group within Renesas' legacy H8 Family - designed specifically for ultra-low-power, cost-sensitive embedded control applications requiring integrated LCD drive, analog sensing, and robust real-time operation.
FAQ
What is the maximum operating frequency of the DF38002H4V?
The DF38002H4V supports a maximum operating frequency of 16 MHz when powered at 4.5–5.5 V. At reduced supply voltages (2.7–3.6 V), the maximum clock rate is limited to 10 MHz to ensure timing margin and stability. This dual-voltage scalability allows DF38002H4V to serve both legacy 5 V systems and modern low-voltage portable designs without performance compromise.
Does the DF38002H4V include an on-chip debug interface?
Yes, the DF38002H4V incorporates an on-chip emulator (OCE) supporting in-circuit debugging via dedicated pins (P95, P33–P35). When active, the OCE reserves address ranges H'7000–H'7FFF and H'F780–H'FB7F, and restricts use of P95 and P33–P35 for general I/O. Debug access requires Renesas E8/E8a emulators and High-performance Embedded Workshop IDE.
Can the DF38002H4V drive a 1/3-bias LCD?
No - the DF38002H4V's LCD controller supports only static, 1/2-bias, and 1/4-bias configurations (up to 4 commons). It does not implement 1/3-bias drive logic or waveform generation. For 1/3-bias displays, an external LCD driver or alternate MCU such as the H8/38104 Group (supporting 1/3-bias) must be selected.
Is the DF38002H4V qualified for automotive applications?
No - the DF38002H4V is rated for standard commercial/industrial temperature range (–20°C to +75°C) and classified as "Standard" grade per Renesas quality policy. It is not AEC-Q100 qualified and lacks automotive-specific features like extended temperature support (–40°C to +125°C), enhanced ESD immunity, or fault-tolerant peripherals required for vehicle ECUs.
What packaging options are available for the DF38002H4V?
The DF38002H4V is exclusively offered in the FP-64A 64-pin plastic flat-pack package (14.0 mm × 14.0 mm, 0.8 mm pitch). No QFP, LQFP, or die variants exist for this specific part number. Alternate packages like FP-64E or TNP-64B apply only to other members of the H8/38002 family (e.g., DF38002S), not DF38002H4V.
DF38002H4V 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:
- 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:
DF38002H4V FAQ
1.How can I place an order for DF38002H4V through Aetrix?
Please submit a Request for Quotation (RFQ) for DF38002H4V 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 DF38002H4V reliable?
The price and inventory of DF38002H4V are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DF38002H4V is usually 5 days.
3.What payment methods are accepted for DF38002H4V?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DF38002H4V transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DF38002H4V?
DF38002H4V orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DF38002H4V 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 DF38002H4V?
For technical support, including DF38002H4V datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DF38002H4V requirements.
6.How does Aetrix verify that DF38002H4V is sourced from the original manufacturer or authorized distributors?
All DF38002H4V 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 DF38002H4V meets industry standards.
7.What is the process for return or replacement of DF38002H4V?
All DF38002H4V units undergo pre-shipment inspection (PSI). If there is an issue with DF38002H4V, 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 DF38002H4V part is unused and in its original packaging.
Return procedure for DF38002H4V:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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