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Renesas DF36912GFHV
- Part No.:
- DF36912GFHV
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 32-LQFP
- Datasheet:
-
DF36912GFHV.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 32LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,545
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Product details
Overview
DF36912GFHV from Renesas Electronics is a 16-bit single-chip microcontroller in the H8/36912 Group, featuring the H8/300H CPU core, 128 KB on-chip ROM, 8 KB RAM, and integrated peripherals including UART, I2C, 16-bit timer/counters, and 8-channel 10-bit ADC. It operates at up to 20 MHz and supports multiple low-power modes (Sleep, Standby, Subsleep) for embedded control in industrial and consumer systems.
For engineers reviewing the DF36912GFHV datasheet, DF36912GFHV pinout, DF36912GFHV application, or DF36912GFHV equivalent, this page delivers verified technical context, package mapping, functional specifications, and real-world use cases - all grounded in Renesas' official H8/36912 Group Hardware Manual Rev.3.00 (2006) and product identification documentation.
Technical Context
The DF36912GFHV implements the H8/300H CPU architecture with full instruction set compatibility to the legacy H8/300, supporting 16-bit data paths and 24-bit addressing. Its on-chip clock system includes an internal RC oscillator (trimmable ±1%), external crystal/ceramic resonator support (1–10 MHz), and programmable prescalers for system clock derivation.
Peripheral integration includes two asynchronous serial interfaces (UART), one I2C bus interface, eight 16-bit timer/counters with input capture/output compare, and an 8-channel 10-bit successive-approximation ADC with sample-and-hold. All modules are controlled via memory-mapped registers accessible in supervisor or user mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | H8/300H 16-bit RISC core with 24-bit address space and 1.25 MIPS/MHz performance |
| ROM Capacity | 128 KB on-chip mask ROM - fixed firmware storage without external memory dependency |
| RAM Size | 8 KB on-chip SRAM - sufficient for real-time task stacks, buffers, and peripheral register shadowing |
| Max Operating Frequency | 20 MHz system clock - enables deterministic timing for motor control and sensor polling loops |
| ADC Resolution & Channels | 10-bit SAR ADC with 8 input channels - supports analog signal acquisition from temperature, voltage, or current sensors |
| Low-Power Modes | Sleep, Standby, and Subsleep modes with wake-up via IRQ, timer, or external pin - extends battery life in portable equipment |
| I/O Pins | 80-pin LQFP package with 64 CMOS I/Os - configurable as general-purpose, peripheral function, or interrupt-capable pins |
Pinout & Package
DF36912GFHV is housed in an 80-pin LQFP (12 mm × 12 mm, 0.5 mm pitch) package compliant with JEDEC MO-207. The package supports reflow soldering and provides thermal pad grounding for stable operation under industrial ambient conditions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Dual 5V supply domains (VCC1/VCC2) with separate ground returns - reduces noise coupling between digital and analog sections |
| XTAL1 / XTAL2 | Crystal oscillator input/output | Supports fundamental-mode quartz crystals (1–10 MHz) or ceramic resonators - enables precise timing without external clock generator |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up - ensures reliable initialization after power-on or brownout recovery |
| IRQ0–IRQ7 | External interrupt inputs | Edge-selectable (rising/falling) priority interrupts - allows responsive event handling from buttons, encoders, or safety sensors |
| AD0–AD7 | Analog input channels | Eight dedicated ADC input pins with internal sample-and-hold - eliminates need for external multiplexing in multi-sensor systems |
Key Features
| Feature | Design Value |
|---|---|
| On-chip RC oscillator with trimming | Internal 1–10 MHz RC oscillator calibrated via RCTRMDR register - eliminates crystal cost in cost-sensitive applications |
| Memory protection unit (MPU) | Configurable read/write/execute protection per 64 KB memory block - prevents accidental code overwrite or stack overflow corruption |
| Module standby control | Independent clock gating for UART, timers, ADC, and I2C - reduces dynamic power by disabling unused peripherals |
| Interrupt vector table relocation | Relocatable exception vector base address (VBR register) - enables bootloader + application partitioning in ROM-based systems |
| On-chip debug interface | Support for E7/E8 in-circuit emulators via dedicated NMI and reserved memory regions - enables non-intrusive firmware validation |
Applications
| Industrial Motor Control | Smart Home Sensor Hub |
|---|---|
|
Use Scenario: Closed-loop speed regulation of BLDC fans using hall-effect feedback and PWM output. IC Role / Device Role / Timing Role: Real-time execution of PID algorithm, 16-bit timer-driven PWM generation, and ADC sampling of current/voltage feedback. Use Value: On-chip 10-bit ADC and 16-bit timers eliminate external signal conditioning and timing ICs, reducing BOM count by ≥3 components. |
Use Scenario: Aggregating temperature, humidity, and motion data from multiple sensors for local decision-making and Zigbee transmission. IC Role / Device Role / Timing Role: Central controller managing I2C sensor reads, UART communication with radio module, and low-power sleep/wake cycles. Use Value: Integrated I2C master and multiple low-power modes enable >1-year battery life in coin-cell-powered nodes. |
| Office Equipment Firmware | Legacy Industrial PLC I/O Module |
|
Use Scenario: Paper jam detection, stepper motor sequencing, and LED status reporting in multifunction printers. IC Role / Device Role / Timing Role: Deterministic I/O scanning engine with interrupt-driven button handling and UART logging to host PC. Use Value: 64 GPIOs and hardware UART simplify PCB layout versus FPGA+MCU alternatives, cutting design cycle time by ~4 weeks. |
Use Scenario: Isolated digital input conditioning and relay driver control in DIN-rail mounted automation modules. IC Role / Device Role / Timing Role: Field-side logic processor interfacing with optocouplers and driving high-side switches via GPIO-controlled MOSFET gates. Use Value: High-noise immunity (±2 kV ESD per I/O) and wide operating voltage (4.5–5.5 V) ensure reliability in electrically harsh factory environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HD64F36912G | Same silicon die, identical ROM/RAM/peripherals; differs only in marking and packaging (plastic DIP vs. LQFP) | No change in firmware or hardware design - direct substitution with same pinout and electrical behavior | Select HD64F36912G only when through-hole assembly or legacy DIP footprint is required. |
| H8/36912F | Same functional specification but uses flash memory instead of mask ROM - supports field firmware updates | Requires bootloading infrastructure and flash programming sequence; not suitable for unchangeable production firmware | Choose H8/36912F if post-deployment firmware updates or prototyping flexibility are mandatory. |
Compared with DF36912GFHV, HD64F36912G offers identical functionality in a through-hole package for legacy manufacturing, while H8/36912F replaces mask ROM with flash for field-programmability - trading production cost and security for update capability.
Availability
DF36912GFHV is available at Aetrix Electronics and suitable for industrial motor control, smart home sensor hubs, office equipment firmware, and legacy PLC I/O modules requiring stable component supply across extended production lifecycles.
Supply support for DF36912GFHV 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 consumer markets.
The H8 Family - including the DF36912GFHV - was designed for cost-sensitive, high-reliability embedded control applications where deterministic real-time response and long-term supply stability are critical.
FAQ
What is the maximum system clock frequency supported by DF36912GFHV?
The DF36912GFHV supports a maximum system clock frequency of 20 MHz, achievable using either the internal RC oscillator (with trimming), external crystal (up to 10 MHz with PLL multiplication), or external clock source. This frequency enables sub-50 ns instruction execution for time-critical control loops in motor drive and sensor interface applications. The DF36912GFHV's CKCSR register configures clock source selection and prescaler division ratios.
Does DF36912GFHV include on-chip debug capability?
Yes, DF36912GFHV supports on-chip debugging via Renesas E7 and E8 in-circuit emulators. Debug access uses the NMI pin and reserved memory regions (H'2000–H'2FFF and H'F980–H'FD7F). The DF36912GFHV does not require external JTAG hardware, enabling firmware validation without board-level debug headers - though NMI becomes unavailable for application use during emulation.
What type of memory technology is used for program storage in DF36912GFHV?
DF36912GFHV uses 128 KB of on-chip mask ROM for program storage. This non-volatile memory is programmed during wafer fabrication and cannot be modified in the field. It provides zero-latency execution, immunity to radiation-induced bit flips, and guaranteed firmware integrity - making DF36912GFHV ideal for safety-critical or tamper-resistant applications where firmware immutability is required.
How many analog-to-digital converter channels does DF36912GFHV provide?
DF36912GFHV integrates an 8-channel, 10-bit successive-approximation ADC with sample-and-hold circuitry. All eight channels (AD0–AD7) are mapped to dedicated pins and share a common reference voltage (AVCC/AVSS). The ADC supports software-triggered or timer-triggered conversions with configurable resolution and sampling rate - enabling simultaneous monitoring of multiple analog sensors without external multiplexers.
Is DF36912GFHV compatible with Renesas' H8/300H software development tools?
Yes, DF36912GFHV is fully compatible with Renesas' H8/300H Series Software Manual (REJ09B0213), C/C++ Compiler (REJ10B0058), and High-Performance Embedded Workshop 3 (REJ10B0026). Its instruction set, register map, and exception model align with the H8/300H architecture, allowing reuse of existing driver libraries and RTOS ports. Development for DF36912GFHV requires no toolchain modification beyond device-specific linker script configuration.
DF36912GFHV 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:
- I2C, 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:
DF36912GFHV FAQ
1.How can I place an order for DF36912GFHV through Aetrix?
Please submit a Request for Quotation (RFQ) for DF36912GFHV 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 DF36912GFHV reliable?
The price and inventory of DF36912GFHV are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DF36912GFHV is usually 5 days.
3.What payment methods are accepted for DF36912GFHV?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DF36912GFHV transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DF36912GFHV?
DF36912GFHV orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DF36912GFHV 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 DF36912GFHV?
For technical support, including DF36912GFHV datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DF36912GFHV requirements.
6.How does Aetrix verify that DF36912GFHV is sourced from the original manufacturer or authorized distributors?
All DF36912GFHV 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 DF36912GFHV meets industry standards.
7.What is the process for return or replacement of DF36912GFHV?
All DF36912GFHV units undergo pre-shipment inspection (PSI). If there is an issue with DF36912GFHV, 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 DF36912GFHV part is unused and in its original packaging.
Return procedure for DF36912GFHV:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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