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Renesas HD64F3694GFYV
- Part No.:
- HD64F3694GFYV
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
HD64F3694GFYV.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,752
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Product details
Overview
HD64F3694GFYV from Renesas Electronics is a 16-bit single-chip microcomputer in the H8/300H Tiny Series, featuring an H8/300H CPU core with H8/300 instruction set compatibility, 64 KB on-chip ROM, 4 KB RAM, and integrated peripherals including UART, timer/counters, and I/O ports. It operates at up to 20 MHz and targets embedded control applications in industrial equipment and consumer electronics.
For engineers reviewing the HD64F3694GFYV datasheet, HD64F3694GFYV pinout, HD64F3694GFYV application, or HD64F3694GFYV equivalent, key selection considerations include its 100-pin QFP package, 3.3 V/5 V dual-voltage operation support, on-chip flash programming capability, and low-power sleep/standby modes for energy-constrained systems.
Technical Context
The HD64F3694GFYV implements the H8/300H CPU architecture with 24-bit address space, supporting both big-endian and little-endian data access via software configuration. It integrates system control modules including clock pulse generators (main and subclock), power-down mode controllers (Sleep, Standby, Subsleep, Subactive), and reset circuitry with watchdog timer.
Peripheral integration includes three 16-bit timer/counters (one with input capture/output compare), two asynchronous serial interfaces (UART), 80 general-purpose I/O pins grouped into 10 ports, and on-chip flash memory with erase/write control registers (FLMCR1/FLMCR2, EBR1, FLPWCR, FENR) enabling in-system programming without external hardware.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | H8/300H 16-bit RISC core, instruction-compatible with H8/300, enabling legacy code reuse and toolchain continuity. |
| Max Operating Frequency | 20 MHz - defines real-time response limit for time-critical control loops and interrupt latency budgets. |
| On-Chip Memory | 64 KB ROM (flash), 4 KB RAM - sufficient for standalone firmware with moderate algorithm complexity and data buffering. |
| Supply Voltage | 3.0 V to 5.5 V - supports direct interfacing with both 3.3 V logic and legacy 5 V peripheral buses. |
| I/O Pins | 80 programmable I/O pins across 10 ports - enables direct connection to sensors, actuators, displays, and communication interfaces without glue logic. |
| Power Modes | Sleep, Standby, Subsleep, Subactive - allows dynamic power scaling from full operation down to µA-level standby current. |
| Package | 100-pin plastic QFP (14 × 20 mm, 0.65 mm pitch) - standard surface-mount footprint compatible with automated assembly and thermal management in compact enclosures. |
Pinout & Package
HD64F3694GFYV is housed in a 100-pin plastic quad flat pack (QFP) with 0.65 mm lead pitch and 14 mm × 20 mm body size. The package supports standard reflow soldering and provides mechanical stability for industrial vibration environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC, VSS | Power supply and ground | Dual VCC pins (pins 14, 70) and multiple VSS pins (e.g., pins 13, 69, 99) ensure low-impedance power distribution and noise suppression across high-speed digital switching. |
| XTAL, EXTAL | Main system clock input | Accepts crystal resonator (1–20 MHz) or external clock source; determines base timing for CPU, peripherals, and bus cycles. |
| CLKOUT | System clock output | Provides buffered main clock signal for synchronization of external logic or test instrumentation. |
| RESET | Active-low reset input | Asynchronous reset assertion clears CPU registers, initializes I/O states, and forces boot vector fetch from address 0x000000. |
| INT0–INT7 | External interrupt inputs | Edge-selectable (via IEGR1/IEGR2) inputs supporting priority-based interrupt handling for real-time event capture. |
| P00–P97 | General-purpose I/O ports | 80 bidirectional CMOS pins configurable per port as input, output, or alternate function (e.g., UART TX/RX, timer I/O). |
Key Features
| Feature | Design Value |
|---|---|
| On-chip Flash Memory (64 KB) | Enables field firmware updates and eliminates need for external EPROM/EEPROM, reducing BOM cost and board area. |
| Four Low-Power Operating Modes | Reduces active current to ~15 mA and standby current to <10 µA, extending battery life in portable or remote monitoring devices. |
| Integrated UART Interfaces (2 channels) | Supports RS-232/RS-485 level-shifting circuits and host communication without external transceivers in basic configurations. |
| Programmable Timer/Counters (3 units) | Provides precise PWM generation, input capture for encoder signals, and real-time scheduling with minimal CPU overhead. |
| Hardware Address Break Function | Allows non-intrusive debugging via hardware breakpoints using ABRKCR/BARH/BARL registers-critical for validation without code instrumentation. |
Applications
| Industrial PLC I/O Module | Smart Energy Meter |
|---|---|
|
Use Scenario: Localized sensor acquisition and actuator control in distributed automation nodes with limited communication bandwidth. IC Role / Device Role / Timing Role: Central controller managing analog/digital I/O, executing ladder logic scans, and synchronizing Modbus RTU frames. Use Value: 80 GPIO pins directly interface with isolation drivers and ADCs; 20 MHz CPU handles 10 ms scan cycles with margin for diagnostics and comms. |
Use Scenario: Residential electricity meter requiring tamper-resistant firmware, pulse counting, and optical/IR communication. IC Role / Device Role / Timing Role: Main metering MCU performing kWh accumulation, LCD refresh, and secure IR protocol stack execution. Use Value: On-chip flash supports encrypted firmware updates; low-power modes extend battery backup life during mains failure. |
| Home Appliance Control Board | Point-of-Sale Peripheral Controller |
|
Use Scenario: Washing machine main control unit coordinating motor drive, temperature sensing, user interface, and safety interlocks. IC Role / Device Role / Timing Role: Real-time coordinator with deterministic response to door switch, water level, and heater faults. Use Value: Hardware timers manage motor commutation timing; RESET pin ensures safe shutdown on brownout detection. |
Use Scenario: Barcode scanner or receipt printer controller needing USB-to-serial bridging and buffer management. IC Role / Device Role / Timing Role: Protocol translator between USB HID interface and legacy RS-232 peripherals. Use Value: Dual UARTs handle simultaneous host command parsing and device status reporting; 4 KB RAM buffers multi-line print jobs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HD64F3687FV | Same H8/300H core but with 32 KB ROM, 2 KB RAM, and 80-pin QFP package - reduced memory and I/O count. | Suitable for cost-sensitive designs with simpler I/O requirements and no need for dual UARTs or advanced timers. | Select when BOM cost reduction outweighs need for flash update flexibility and peripheral headroom. |
| R5F100LEAFB | Renesas RL78/G13 16-bit core, 128 KB flash, 12 KB RAM, 64-pin LQFP - newer architecture with lower power and enhanced debug. | Better suited for new designs requiring longer product lifecycle, higher integration density, and ISO 26262-ready toolchains. | Choose for greenfield projects where migration from legacy H8 toolchains is acceptable and long-term supply assurance is critical. |
Compared with HD64F3694GFYV, HD64F3687FV trades memory and peripheral capacity for lower cost and smaller footprint, while R5F100LEAFB offers modern low-power architecture and extended flash lifetime at the expense of H8 software compatibility.
Availability
HD64F3694GFYV is available at Aetrix Electronics and suitable for industrial automation, smart metering, home appliance control, and point-of-sale peripheral applications requiring stable component supply and long-term obsolescence management.
Supply support for HD64F3694GFYV 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 IoT markets.
The HD64F3694GFYV belongs to the H8/300H Tiny Series - a family designed for cost-effective, reliable embedded control in resource-constrained applications where code compatibility with legacy H8 systems is essential.
FAQ
What is the maximum operating frequency of the HD64F3694GFYV?
The HD64F3694GFYV supports a maximum operating frequency of 20 MHz when driven by an external crystal or clock source connected to XTAL/EXTAL pins. This frequency defines the upper bound for instruction execution speed, peripheral timing resolution, and real-time interrupt response - all critical for deterministic control loop performance in applications like motor drives or sensor sampling. The HD64F3694GFYV maintains stable operation across its specified voltage range (3.0 V to 5.5 V) at this rate.
Does the HD64F3694GFYV support in-system programming of its on-chip flash memory?
Yes, the HD64F3694GFYV supports in-system programming (ISP) of its 64 KB on-chip flash memory using dedicated control registers (FLMCR1, FLMCR2, EBR1, FLPWCR, FENR) and standard I/O pins - no external programmer is required. This capability enables field firmware updates and eliminates the need for socketed EPROMs or external EEPROMs. The HD64F3694GFYV's flash endurance is rated for 10,000 write/erase cycles, making it suitable for applications requiring occasional configuration changes or calibration updates.
What power-saving modes are available on the HD64F3694GFYV?
The HD64F3694GFYV implements four distinct low-power modes: Sleep, Standby, Subsleep, and Subactive - each with progressively deeper power reduction and different wake-up sources. In Standby mode, current consumption drops below 10 µA while retaining RAM contents and allowing wake-up via external interrupt or RTC alarm. The HD64F3694GFYV's SYSCR1/SYSCR2 and MSTCR1 registers provide software control over mode entry and peripheral clock gating, enabling fine-grained energy optimization for battery-powered devices.
How many UART interfaces does the HD64F3694GFYV integrate?
The HD64F3694GFYV integrates two independent asynchronous serial interfaces (UARTs), each with dedicated transmit and receive shift registers, baud rate generators, and status/control registers. These UARTs support full-duplex communication at configurable baud rates up to 1 Mbps and can be mapped to multiple pin combinations via port function selection. The HD64F3694GFYV's dual UART capability simplifies designs requiring simultaneous host communication and peripheral bridging - such as connecting to both a PC terminal and a legacy RS-485 sensor network.
Is the HD64F3694GFYV pin-compatible with other members of the H8/3694 group?
No, the HD64F3694GFYV is not universally pin-compatible across the H8/3694 group. While it shares the same 100-pin QFP package with variants like HD64F3694G, differences in internal peripheral enablement and pin multiplexing mean that identical pin assignments do not guarantee identical functionality. For example, certain timer or UART functions may be assigned to different pins in the HD64F3694GFYV versus HD64F3694. Always verify pin function mapping against the specific HD64F3694GFYV hardware manual before PCB layout.
HD64F3694GFYV Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 48-LQFP
- Series:
- H8® H8/300H Tiny
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- H8/300H
- Core Size:
- 16-Bit
- Speed:
- 20MHz
- Connectivity:
- I2C, SCI
- Peripherals:
- LVD, POR, PWM, WDT
- Number of I/O:
- 29
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 5.5V
- Data Converters:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -20°C ~ 75°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
HD64F3694GFYV FAQ
1.How can I place an order for HD64F3694GFYV through Aetrix?
Please submit a Request for Quotation (RFQ) for HD64F3694GFYV 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 HD64F3694GFYV reliable?
The price and inventory of HD64F3694GFYV are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HD64F3694GFYV is usually 5 days.
3.What payment methods are accepted for HD64F3694GFYV?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HD64F3694GFYV transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HD64F3694GFYV?
HD64F3694GFYV orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HD64F3694GFYV 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 HD64F3694GFYV?
For technical support, including HD64F3694GFYV datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HD64F3694GFYV requirements.
6.How does Aetrix verify that HD64F3694GFYV is sourced from the original manufacturer or authorized distributors?
All HD64F3694GFYV 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 HD64F3694GFYV meets industry standards.
7.What is the process for return or replacement of HD64F3694GFYV?
All HD64F3694GFYV units undergo pre-shipment inspection (PSI). If there is an issue with HD64F3694GFYV, 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 HD64F3694GFYV part is unused and in its original packaging.
Return procedure for HD64F3694GFYV:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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