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Renesas HD64F3684HV
- Part No.:
- HD64F3684HV
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-BQFP
- Datasheet:
-
HD64F3684HV.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 64QFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,292
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Product details
Overview
HD64F3684HV from Renesas Electronics is a 16-bit single-chip microcomputer in the H8/300H Tiny Series, featuring an H8/300H CPU core with instruction set compatibility to H8/300, 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 in industrial equipment and consumer appliances.
For engineers reviewing the HD64F3684HV datasheet, HD64F3684HV pinout, HD64F3684HV application, or HD64F3684HV equivalent, key selection criteria include its 80-pin PQFP package, 5 V operation, ROM-based program storage, low-power sleep modes, and support for on-board programming via SCI channel 1 in boot mode.
Technical Context
The HD64F3684HV implements the H8/300H CPU architecture with 24-bit addressing, supporting both byte and word memory access. Its system clock generator accepts external crystal (up to 20 MHz), ceramic resonator, or external clock input, and includes a subclock generator for 32.768 kHz real-time clock support.
Power management includes four low-power modes-Sleep, Standby, Subsleep, and Subactive-with configurable module standby control via MSTCR1/MSTCR2 registers. Reset handling supports both power-on reset and external reset pin assertion, with undefined internal state until reset deassertion and full VCC stabilization.
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. |
| ROM Size | 64 KB on-chip mask ROM - fixed firmware storage, no field reprogramming. |
| RAM Size | 4 KB on-chip RAM - sufficient for stack, variables, and small data buffers in real-time control. |
| Max Clock Frequency | 20 MHz - determines real-time interrupt latency and instruction throughput for deterministic control loops. |
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5 V logic systems and industrial power rails. |
| Operating Temperature | −20 °C to +75 °C - rated for commercial/industrial environments per Renesas Standard grade. |
| I/O Pins | 62 programmable CMOS I/O pins - supports parallel interface, sensor readout, and actuator drive without external glue logic. |
Pinout & Package
HD64F3684HV is housed in an 80-pin plastic quad flat pack (PQFP) with 0.65 mm lead pitch, compliant with JEDEC MS-026. The package supports surface-mount assembly and provides thermal dissipation suitable for continuous 5 V operation at ambient temperatures up to +75 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC, VSS | Power supply and ground | Dedicated power/ground pairs minimize noise coupling; multiple VSS pins ensure stable reference for analog and digital sections. |
| RESET | Active-low reset input | Asynchronous reset pin requiring external pull-up; internal weak pull-down ensures defined state during power ramp. |
| CLK, XIN, XOUT | System clock inputs/outputs | Supports crystal (1–20 MHz), ceramic resonator, or external clock; XOUT is high-impedance when external clock used. |
| P00–P07, P10–P17, etc. | Bi-directional CMOS I/O ports | Individually configurable as input/output with internal pull-up options; unused inputs must be externally fixed to avoid floating-induced current. |
| SCI1_TXD / SCI1_RXD | Serial communication interface | Full-duplex UART channel 1 - used for debug, host communication, and on-board programming in boot mode. |
| NMI | Non-maskable interrupt input | Reserved for E7/E8 emulator use; not available for user application when on-chip debugging is active. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip ROM + RAM | 64 KB ROM and 4 KB RAM eliminate need for external memory in cost-sensitive control applications. |
| Multiple Low-Power Modes | Sleep, Standby, Subsleep, and Subactive modes enable <10 µA current draw in deep sleep - critical for battery-backed systems. |
| Integrated Peripherals | Three 16-bit timers, two UARTs (SCI), watchdog timer, and 10-bit A/D converter reduce BOM count and PCB area. |
| Boot Mode Programming | SCI channel 1 supports in-system programming via serial interface - enables field firmware updates without UV erasure or socketing. |
| Reset & Power Management | Power-on reset circuit with built-in delay and voltage detector ensures reliable initialization across supply ramps. |
Applications
| Industrial Motor Control | Home Appliance MCU |
|---|---|
Use Scenario: Closed-loop speed and direction control of BLDC motors in HVAC blowers and washing machine drum drives. IC Role / Device Role / Timing Role: Primary controller executing PID algorithms, generating PWM outputs, and monitoring hall-effect sensors via GPIO and A/D. Use Value: 62 I/O pins and three 16-bit timers allow simultaneous PWM generation, sensor sampling, and communication - eliminating external timing ICs. | Use Scenario: User interface, cycle sequencing, and safety monitoring in microwave ovens and rice cookers. IC Role / Device Role / Timing Role: System-on-chip managing keypad scan, display driver, relay control, and thermal cutoff detection. Use Value: Integrated 10-bit A/D converter reads thermistor inputs directly; 4 KB RAM accommodates multi-state cooking logic and fault logging. |
| Factory Automation I/O Module | Point-of-Sale Peripheral Controller |
Use Scenario: DIN-rail mounted digital I/O expansion unit interfacing PLCs with solenoids, limit switches, and indicator lamps. IC Role / Device Role / Timing Role: Protocol-transparent I/O concentrator with RS-485 SCI interface and opto-isolated input conditioning. Use Value: 5 V tolerant I/O and robust ESD protection (per Renesas Standard grade spec) withstand industrial electrical noise and transient surges. | Use Scenario: Embedded controller for receipt printer, cash drawer actuator, and barcode scanner interface in retail terminals. IC Role / Device Role / Timing Role: Dedicated peripheral manager handling asynchronous serial protocols (ESC/POS), stepper motor timing, and secure EEPROM access. Use Value: Mask ROM ensures tamper-resistant firmware; SCI channels support concurrent printer and scanner communication without CPU overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HD64F3684F | Same core and peripherals, but uses flash memory instead of mask ROM; supports in-field firmware updates. | Preferred where firmware revision cycles exceed hardware lifetime or remote updates are required. | Select HD64F3684F if reprogrammability is mandatory; HD64F3684HV offers lower unit cost and higher security for fixed-function deployments. |
| HD64F3687G | Higher memory configuration: 128 KB ROM, 8 KB RAM, additional UART and timer resources; same 80-pin PQFP package. | Suitable for applications needing larger code footprint or more concurrent peripherals without board redesign. | Choose HD64F3687G when scaling functionality within identical footprint; HD64F3684HV remains optimal for cost-constrained, functionally stable designs. |
Compared with HD64F3684F and HD64F3687G, the HD64F3684HV delivers optimal cost-performance balance for volume production of fixed-feature embedded controllers, trading flash flexibility and memory headroom for manufacturing simplicity and security.
Availability
HD64F3684HV is available at Aetrix Electronics and suitable for industrial motor control, home appliance MCU, factory automation I/O modules, and point-of-sale peripheral controllers requiring stable component supply over extended production lifecycles.
Supply support for HD64F3684HV 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 H8/3684 series belongs to the H8/300H Tiny family - designed for cost-sensitive, low-power embedded control applications where reliability, integration, and long-term supply stability are critical.
FAQ
What is the maximum operating frequency of the HD64F3684HV?
The HD64F3684HV supports a maximum system clock frequency of 20 MHz when using an external crystal or clock source. This frequency determines instruction execution speed, interrupt response time, and peripheral timing resolution. Operation above this rating is not guaranteed and may cause instability or data corruption in the HD64F3684HV.
Does the HD64F3684HV support in-system programming?
Yes, the HD64F3684HV supports on-board programming via SCI channel 1 in boot mode, allowing firmware loading through a serial interface without removing the device from the PCB. This capability applies only during initial boot and requires proper pin configuration (e.g., MODE0 = high). The HD64F3684HV's mask ROM prevents runtime reprogramming but enables one-time field provisioning.
What power supply voltage range is specified for the HD64F3684HV?
The HD64F3684HV is rated for operation across a supply voltage range of 4.5 V to 5.5 V. Operation outside this range may result in undefined behavior, increased current leakage, or permanent damage. The HD64F3684HV includes an internal voltage detector that triggers reset below the threshold, ensuring safe startup and brown-out recovery.
How many I/O pins does the HD64F3684HV provide, and are they 5 V tolerant?
The HD64F3684HV provides 62 general-purpose CMOS I/O pins in its 80-pin PQFP package. All I/O pins are 5 V tolerant and compatible with standard TTL/CMOS logic levels. Unused inputs must be externally pulled high or low to prevent floating states that could induce shoot-through current or erratic behavior in the HD64F3684HV.
Is the HD64F3684HV pin-compatible with other devices in the H8/368x family?
The HD64F3684HV shares the same 80-pin PQFP package and core pinout with other members of the H8/368x group, including HD64F3684F and HD64F3687G. However, differences in memory type (mask ROM vs. flash), peripheral enablement, and register mapping mean that direct pin-for-pin substitution requires verification of firmware compatibility and peripheral initialization sequences for the specific HD64F3684HV implementation.
HD64F3684HV Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 64-BQFP
- Series:
- H8® H8/300H Tiny
- Packaging:
- Tray
- Product Status:
- Last Time Buy
- Programmable:
- Not Verified
- Core Processor:
- H8/300H
- Core Size:
- 16-Bit
- Speed:
- 20MHz
- Connectivity:
- I2C, SCI
- Peripherals:
- PWM, WDT
- Number of I/O:
- 45
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 4K 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:
HD64F3684HV FAQ
1.How can I place an order for HD64F3684HV through Aetrix?
Please submit a Request for Quotation (RFQ) for HD64F3684HV 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 HD64F3684HV reliable?
The price and inventory of HD64F3684HV are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HD64F3684HV is usually 5 days.
3.What payment methods are accepted for HD64F3684HV?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HD64F3684HV transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HD64F3684HV?
HD64F3684HV orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HD64F3684HV 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 HD64F3684HV?
For technical support, including HD64F3684HV datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HD64F3684HV requirements.
6.How does Aetrix verify that HD64F3684HV is sourced from the original manufacturer or authorized distributors?
All HD64F3684HV 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 HD64F3684HV meets industry standards.
7.What is the process for return or replacement of HD64F3684HV?
All HD64F3684HV units undergo pre-shipment inspection (PSI). If there is an issue with HD64F3684HV, 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 HD64F3684HV part is unused and in its original packaging.
Return procedure for HD64F3684HV:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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