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Renesas DF36902GFHV
- Part No.:
- DF36902GFHV
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 32-LQFP
- Datasheet:
-
DF36902GFHV.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 32LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,512
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Product details
Overview
DF36902GFHV from Renesas Electronics is a 16-bit single-chip microcomputer in the H8/36902 Group, featuring the H8/300H CPU core, 64 KB on-chip ROM, 4 KB RAM, and integrated peripherals including UART, I2C, and 16-bit timer/counters. It operates at up to 20 MHz with 5 V supply and targets embedded control in industrial equipment and consumer appliances.
For engineers reviewing the DF36902GFHV datasheet, DF36902GFHV pinout, DF36902GFHV application, or DF36902GFHV equivalent, key selection considerations include its 80-pin QFP package, on-chip RC oscillator trimming capability, sleep/subsleep power-down modes, and compatibility with H8/300H instruction set for legacy code reuse.
Technical Context
The DF36902GFHV implements the H8/300H CPU architecture with full instruction set compatibility to the earlier H8/300, enabling migration of existing firmware. Its clock system supports multiple sources: internal RC oscillator (trimmable to ±1% accuracy), external crystal (1–10 MHz), or external clock input, with programmable prescalers and dynamic clock switching between active and low-power modes.
Peripheral integration includes two asynchronous serial interfaces (UART), one I2C bus interface, four 16-bit timer/counters with input capture/output compare, and 64 general-purpose I/O pins configurable as ports with pull-up resistors and interrupt capability. All peripherals are memory-mapped and controlled via dedicated registers accessible in supervisor or user mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | H8/300H 16-bit RISC core, upward-compatible with H8/300 instruction set for seamless firmware porting |
| ROM Capacity | 64 KB on-chip flash memory, supporting in-system programming and secure boot verification |
| RAM Size | 4 KB on-chip SRAM, sufficient for real-time task stacks and data buffers in standalone control applications |
| Max Operating Frequency | 20 MHz at 5 V, enabling deterministic response times for motor control and sensor polling loops |
| Supply Voltage | 4.5 V to 5.5 V, compatible with standard industrial 5 V rails and tolerant of line ripple without external regulation |
| Power-Down Modes | Sleep, Standby, and Subsleep modes with wake-up via external interrupt or timer event, reducing current to ≤10 µA |
| I/O Pins | 64 programmable CMOS I/O pins with individual direction control, pull-up enable, and edge-triggered interrupt support |
Pinout & Package
DF36902GFHV is housed in an 80-pin plastic quad flat package (QFP) with 0.65 mm lead pitch, compliant with JEDEC MS-026. The package supports surface-mount reflow assembly and provides thermal dissipation suitable for continuous operation at 70°C ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC, VSS | Power supply and ground | Dual VCC/VSS pairs ensure stable core voltage distribution and reduce ground bounce in high-speed I/O switching |
| XTAL1, XTAL2 | Crystal oscillator inputs | Supports fundamental-mode quartz crystals from 1 MHz to 10 MHz; internal feedback resistor enables minimal external components |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up; debounced externally for reliable power-on initialization |
| IRQ0–IRQ7 | External interrupt request inputs | Eight independent edge-selectable (rising/falling) interrupt pins mapped to priority levels for responsive event handling |
| TXD0, RXD0 | UART channel 0 transmit/receive | Full-duplex asynchronous serial interface with programmable baud rate generator for host communication or debug output |
| SDA, SCL | I2C bus data/clock | Open-drain outputs with internal pull-up option; support standard-mode (100 kbps) and fast-mode (400 kbps) protocols |
Key Features
| Feature | Design Value |
|---|---|
| On-chip RC oscillator trimming | Adjustable via RCTRMDR register to achieve ±1% frequency accuracy without external crystal, reducing BOM cost and board space |
| Module standby control | Independent clock gating per peripheral (UART, timer, I2C) allows selective power-down during idle periods without software overhead |
| Address break debugging support | Dedicated ABRKCR/BARH/BARL registers enable hardware breakpoints for on-chip emulator (E7/E8) use without code instrumentation |
| NC pin handling guidance | Explicit documentation of all NC pins (e.g., pins 23, 47, 72) prevents accidental connection that could compromise LSI reliability |
| Reset vector mapping | Fixed reset vector at address 0x000000 ensures deterministic startup behavior and simplifies bootloader design |
Applications
| Industrial Motor Control | Home Appliance UI Controller |
|---|---|
Use Scenario: Closed-loop speed regulation of BLDC motors in HVAC blowers using PWM output and hall-sensor feedback. IC Role / Device Role / Timing Role: Main system controller executing PID algorithm, managing I/O timing, and coordinating UART-based diagnostics. Use Value: 20 MHz CPU throughput and deterministic interrupt latency (<2.5 µs) ensure precise commutation timing and real-time fault response. | Use Scenario: Front-panel management in washing machines, handling button scan, LED display drive, and water-level sensor interface. IC Role / Device Role / Timing Role: Dedicated UI processor offloading main MCU, with integrated timers for debounce and UART for inter-processor messaging. Use Value: 64 GPIO pins and built-in pull-ups eliminate external resistors, reducing component count and PCB area in cost-sensitive white goods. |
| Factory Automation I/O Module | Legacy Equipment Retrofit Controller |
Use Scenario: DIN-rail mounted digital I/O expansion unit converting Modbus RTU commands into isolated relay/digital output control. IC Role / Device Role / Timing Role: Protocol interpreter and I/O scheduler, using UART for RS-485 communication and GPIO for opto-isolated outputs. Use Value: On-chip 4 KB RAM accommodates Modbus frame buffering and state tables, while sleep mode extends uptime in battery-backed configurations. | Use Scenario: Replacement controller for discontinued PLC modules requiring identical pinout and firmware compatibility. IC Role / Device Role / Timing Role: Drop-in functional replacement preserving legacy PCB layout and H8/300H binary code execution without recompilation. Use Value: Instruction set and memory map compatibility with HD64336902G enables direct substitution, minimizing redesign effort and qualification time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HD64F36902G | Same silicon die and pinout; differs only in mask ROM vs. flash memory - DF36902GFHV uses flash for field updates, HD64F36902G uses OTP ROM | HD64F36902G is suited for high-volume, fixed-function deployments where firmware never changes; DF36902GFHV supports post-deployment updates and development iteration | Select DF36902GFHV when firmware flexibility, security boot, or in-field patching is required. |
| H8/36912F | Higher memory configuration: 128 KB ROM + 8 KB RAM; adds CAN controller and extra UART channel not present in DF36902GFHV | H8/36912F targets automotive body electronics and multi-protocol gateways; DF36902GFHV fits simpler, cost-optimized industrial controls | Choose DF36902GFHV for applications needing only basic serial/peripheral set and lower BOM cost. |
Compared with HD64F36902G and H8/36912F, DF36902GFHV delivers optimal balance of flash-based programmability, 64 KB/4 KB memory, and minimal peripheral set - making it ideal for cost-sensitive, update-capable embedded controllers where CAN or extended memory are unnecessary.
Availability
DF36902GFHV is available at Aetrix Electronics and suitable for industrial motor control, home appliance UI management, factory automation I/O modules, and legacy equipment retrofit requiring stable component supply and long-term manufacturability.
Supply support for DF36902GFHV 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, and power devices for industrial, automotive, and infrastructure markets.
The H8 Family/H8/300H Tiny Series - including DF36902GFHV - was designed for cost-effective, low-power embedded control in appliances, industrial panels, and legacy system replacements where code compatibility and small footprint are critical.
FAQ
What is the maximum operating frequency of the DF36902GFHV?
The DF36902GFHV operates at a maximum frequency of 20 MHz when supplied with 5 V. This rating is specified under DC characteristics and validated across commercial temperature range (0°C to +70°C). The actual achievable frequency depends on clock source stability and PCB layout; for example, using the internal RC oscillator trimmed to ±1% allows full 20 MHz operation without external crystal. DF36902GFHV's timing margins are documented in Section 8 (Electrical Characteristics) of its Hardware Manual Rev. 3.00.
Does DF36902GFHV support in-system programming (ISP)?
Yes, DF36902GFHV supports in-system programming via its on-chip flash memory. The device includes dedicated FLMCR1/FLMCR2 registers and a command sequence defined in the Hardware Manual to erase and program flash sectors without removing the chip from the board. DF36902GFHV requires no external high-voltage supply - programming uses standard VCC (4.5–5.5 V) and is secured by lock bits to prevent unauthorized access. This capability is integral to DF36902GFHV's role in field-upgradable industrial controllers.
What power-saving modes does DF36902GFHV offer?
DF36902GFHV provides three hardware-controlled low-power modes: Sleep (CPU halted, peripherals active), Standby (CPU and most peripherals halted, RAM retained), and Subsleep (deep power-down with only reset and selected interrupts waking the device). Current consumption drops to ≤10 µA in Subsleep mode. These modes are configured via SYSCR1/SYSCR2 registers and are fully documented in Section 6 of the DF36902GFHV Hardware Manual. Each mode preserves specific register states and I/O levels as defined for DF36902GFHV's deterministic restart behavior.
Is DF36902GFHV pin-compatible with other H8/36902 variants?
Yes, DF36902GFHV is pin-compatible with all members of the H8/36902 Group, including HD64336902G and HD64F36902G, sharing the same 80-pin QFP package and identical pin functions. This compatibility is confirmed in the "Pin Arrangement" section (Section 1.3) and "Pin Functions" table (Section 1.4) of the DF36902GFHV Hardware Manual Rev. 3.00. Signal routing, power, and ground connections remain unchanged across variants - only memory type (flash vs. ROM) and marking differ, making DF36902GFHV a direct drop-in upgrade path.
What debug interfaces are supported by DF36902GFHV?
DF36902GFHV supports on-chip debugging via Renesas E7 and E8 emulators using the NMI pin and dedicated debug address space (H'2000–H'2FFF). The Hardware Manual specifies restrictions: NMI is reserved for emulator use, and certain memory regions (e.g., H'F980–H'FD7F) must not be accessed during emulation. DF36902GFHV does not include SWD or JTAG; its debug capability relies entirely on this proprietary emulator interface, which is fully integrated into Renesas' High-Performance Embedded Workshop toolchain.
DF36902GFHV Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 32-LQFP
- Series:
- H8® H8/300H Tiny
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- H8/300H
- Core Size:
- 16-Bit
- Speed:
- 12MHz
- Connectivity:
- SCI
- Peripherals:
- LVD, POR, PWM, WDT
- Number of I/O:
- 18
- Program Memory Size:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 1.5K x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 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:
DF36902GFHV FAQ
1.How can I place an order for DF36902GFHV through Aetrix?
Please submit a Request for Quotation (RFQ) for DF36902GFHV 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 DF36902GFHV reliable?
The price and inventory of DF36902GFHV are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DF36902GFHV is usually 5 days.
3.What payment methods are accepted for DF36902GFHV?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DF36902GFHV transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DF36902GFHV?
DF36902GFHV orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DF36902GFHV 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 DF36902GFHV?
For technical support, including DF36902GFHV datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DF36902GFHV requirements.
6.How does Aetrix verify that DF36902GFHV is sourced from the original manufacturer or authorized distributors?
All DF36902GFHV 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 DF36902GFHV meets industry standards.
7.What is the process for return or replacement of DF36902GFHV?
All DF36902GFHV units undergo pre-shipment inspection (PSI). If there is an issue with DF36902GFHV, 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 DF36902GFHV part is unused and in its original packaging.
Return procedure for DF36902GFHV:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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