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Renesas DF3687A01FPJMH
- Part No.:
- DF3687A01FPJMH
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- -
- Datasheet:
-
DF3687A01FPJMH.pdf
- Description:
- 16-BIT, H8/300H CPU
- Quantity:
- Payment:
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Inventory:22,007
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Product details
Overview
DF3687A01FPJMH from Renesas is a 16-bit single-chip microcomputer in the H8/3687 Group, featuring the H8/300H CPU core with instruction compatibility to H8/300. It integrates on-chip ROM (128 KB), RAM (8 KB), RTC, SCI, I2C, and multiple I/O ports. Designed for embedded control in industrial instrumentation and motor drive systems requiring deterministic real-time response.
For engineers reviewing the DF3687A01FPJMH datasheet, DF3687A01FPJMH pinout, DF3687A01FPJMH application, or DF3687A01FPJMH equivalent, key selection criteria include its 128 KB flash memory size, 8 KB RAM capacity, 32.768 kHz subclock support for RTC operation, and 5V-tolerant I/O capability in LQFP-100 package.
Technical Context
The DF3687A01FPJMH implements the H8/300H CPU architecture with 24-bit address space, supporting up to 16 MB addressing. It includes dual clock domains: main system clock (up to 20 MHz) derived from crystal/ceramic resonator or external source, and independent 32.768 kHz subclock for RTC and power-down modes.
On-chip peripherals include two serial communication interfaces (SCI), one I2C bus interface, 10-bit A/D converter with 8 channels, watchdog timer, and multiple programmable I/O ports with pull-up control and interrupt capability per pin. Power management supports Sleep, Standby, Subsleep, and Subactive modes with configurable module-level standby control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | H8/300H 16-bit RISC core with H8/300 instruction set compatibility |
| ROM Capacity | 128 KB on-chip flash memory for program storage and in-system programming |
| RAM Size | 8 KB on-chip SRAM for data and stack operations |
| Max Operating Frequency | 20 MHz system clock enables real-time control loop execution at ≤50 ns instruction cycle |
| RTC Support | Dedicated 32.768 kHz subclock input with calendar/timekeeping registers and alarm interrupt |
| I/O Pins | 80 general-purpose I/O pins across Ports 1, 2, 3, 5, 6, 7, 8, and Port B with individual direction and pull-up control |
| A/D Converter | 10-bit successive approximation ADC with 8 input channels and software/start-triggered conversion |
Pinout & Package
LQFP-100 package with 0.5 mm pitch, 14 × 14 mm body size, and exposed thermal pad. Pin 1 marked by dot; pin numbering follows standard counter-clockwise sequence from top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC, VSS | Power supply and ground | Core logic supply (5 V ±10%) and reference ground for all digital blocks |
| XIN, XOUT | Main system clock oscillator terminals | Connect 1–20 MHz crystal or ceramic resonator; internal oscillator circuit drives CPU and peripherals |
| EXTAL, OSCO | Subclock oscillator terminals | Connect 32.768 kHz crystal for RTC and low-power mode timing |
| RESET | Active-low reset input | Asynchronous hardware reset; must be held low ≥1024 cycles after power stabilization |
| NMI | Non-maskable interrupt input | Edge-triggered interrupt used for critical fault handling or emulator debug interface |
| P10–P17, P20–P27, etc. | Programmable I/O port pins | Configurable as input/output with latch, pull-up control, and interrupt enable per pin |
Key Features
| Feature | Design Value |
|---|---|
| On-board programming support | Boot-mode SCI channel enables firmware updates without external programmer via UART interface |
| Module standby control | Independent enable/disable of SCI, I2C, A/D, and timer modules reduces active current to <10 µA per disabled peripheral |
| Real-time clock with alarm | Hardware calendar (year/month/day/hour/min/sec) with interrupt-on-match for scheduled wake-up from Subsleep mode |
| 5V-tolerant I/O | All general-purpose ports accept 5 V inputs while operating at 5 V supply - no level-shifting required for legacy industrial interfaces |
| Address break debugging | Dedicated hardware breakpoint unit with two address-compare registers supports non-intrusive code inspection during development |
Applications
| Industrial PLC I/O Module | Motor Drive Control Unit |
|---|---|
Use Scenario: Compact programmable logic controller with discrete I/O expansion and analog sensor interfacing. IC Role / Device Role / Timing Role: Main system controller executing ladder logic scan, managing 8-channel A/D acquisition, and driving isolated output drivers via parallel I/O. Use Value: Integrated 128 KB flash eliminates external program memory; RTC enables time-stamped event logging without auxiliary ICs. | Use Scenario: Brushless DC motor controller with Hall-effect feedback, PWM generation, and thermal monitoring. IC Role / Device Role / Timing Role: Real-time motion controller coordinating 3-phase PWM outputs, reading position sensors, and executing commutation logic within fixed 50 µs intervals. Use Value: Deterministic 20 MHz H8/300H execution ensures jitter-free PWM timing; 8 KB RAM accommodates PID coefficient tables and history buffers. |
| Energy Meter Data Logger | Building Automation Sensor Node |
Use Scenario: DIN-rail mounted electricity meter with pulse counting, tariff scheduling, and RS-485 communication. IC Role / Device Role / Timing Role: System-on-chip managing metrology calculations, RTC-based billing cycles, and half-duplex SCI-to-RS485 translation. Use Value: Subclock-driven RTC maintains accurate time over 10-year battery backup; 5V-tolerant I/O interfaces directly with opto-isolated pulse inputs. | Use Scenario: Wireless HVAC sensor node collecting temperature, humidity, and occupancy data for cloud reporting. IC Role / Device Role / Timing Role: Low-power host processor managing I2C sensor reads, sleep/wake scheduling, and UART-based wireless module control. Use Value: Subactive and Subsleep modes reduce average current to <50 µA; integrated SCI avoids external level translators for 3.3 V radio interface. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HD64F3687G | Same H8/3687 family, identical pinout and peripheral set, but with mask-ROM instead of flash memory | Fixed firmware only; unsuitable for field-upgradable designs requiring reprogrammability | Select HD64F3687G only for high-volume cost-sensitive applications where firmware never changes |
| R5F3687ADFP | Renesas RX63N-series successor with 32-bit CPU, 512 KB flash, and enhanced peripheral set including Ethernet MAC | Higher performance and connectivity; requires PCB redesign due to QFP-144 package and different pin mapping | Choose R5F3687ADFP when migrating to next-generation platforms needing TCP/IP stack or larger code footprint |
Compared with HD64F3687G and R5F3687ADFP, DF3687A01FPJMH uniquely balances field-programmable flash, mature toolchain support, and LQFP-100 footprint - making it optimal for maintenance of existing H8-based industrial controllers without layout change.
Availability
DF3687A01FPJMH is available at Aetrix Electronics and suitable for industrial PLC I/O modules, motor drive control units, energy meter data loggers, and building automation sensor nodes requiring stable component supply across extended product lifecycles.
Supply support for DF3687A01FPJMH 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 Technology Corp. (now part of Renesas Electronics Corporation) is a Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power devices for industrial, automotive, and infrastructure markets.
The H8/3687 Group was designed as a cost-optimized, pin-compatible evolution of the H8/300H architecture - targeting resource-constrained embedded control applications where reliability, long-term availability, and deterministic real-time behavior are critical.
FAQ
What is the maximum system clock frequency supported by DF3687A01FPJMH?
The DF3687A01FPJMH supports a maximum system clock frequency of 20 MHz when using an external crystal or ceramic resonator connected to the XIN/XOUT pins. This allows instruction execution at 50 ns per cycle, enabling tight real-time control loops. The device also supports external clock input mode for synchronization with system-level timing sources. DF3687A01FPJMH maintains full functionality and timing compliance across its specified voltage and temperature range at this frequency.
Does DF3687A01FPJMH include on-chip flash memory, and what is its capacity?
Yes, DF3687A01FPJMH integrates 128 KB of on-chip flash memory for program storage and firmware updates. This flash supports in-system programming via boot-mode SCI, eliminating the need for external programmers in production and field service. DF3687A01FPJMH flash memory includes hardware and software protection features to prevent accidental erasure or overwrite during normal operation.
How many I/O pins does DF3687A01FPJMH provide, and are they 5V-tolerant?
DF3687A01FPJMH provides 80 general-purpose I/O pins distributed across eight ports (P1–P3, P5–P8, and Port B). All I/O pins are 5V-tolerant when operated at VCC = 5 V, allowing direct interface with legacy industrial sensors, actuators, and logic families without external level shifters. DF3687A01FPJMH also supports individual pull-up control and interrupt-enable per pin for flexible signal conditioning.
Can DF3687A01FPJMH operate in low-power modes, and which ones are supported?
Yes, DF3687A01FPJMH supports four low-power modes: Sleep, Standby, Subsleep, and Subactive. Subsleep mode retains RTC operation and RAM contents while reducing current to ~15 µA; Subactive mode maintains selected peripherals (e.g., SCI, I2C) active at reduced clock rates. DF3687A01FPJMH uses SYSCR1/SYSCR2 and MSTCR1/MSTCR2 registers to configure entry/exit conditions and module-level power gating.
Is there a real-time clock (RTC) integrated into DF3687A01FPJMH, and how is it powered?
Yes, DF3687A01FPJMH includes a hardware RTC with calendar function (year/month/day/hour/min/sec) and alarm interrupt capability. It operates from a dedicated 32.768 kHz subclock generated by an external crystal connected to EXTAL/OSCO pins. The RTC remains functional in Subsleep mode and can generate wake-up interrupts - enabling time-based scheduling without main CPU intervention. DF3687A01FPJMH RTC registers are accessible via RSECDR, RMINDR, and related addresses in the memory map.
DF3687A01FPJMH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- -
- Series:
- *
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- -
- Core Size:
- -
- Speed:
- -
- Connectivity:
- -
- Peripherals:
- -
- Number of I/O:
- -
- Program Memory Size:
- -
- Program Memory Type:
- -
- EEPROM Size:
- -
- RAM Size:
- -
- Voltage - Supply (Vcc/Vdd):
- -
- Data Converters:
- -
- Oscillator Type:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
DF3687A01FPJMH FAQ
1.How can I place an order for DF3687A01FPJMH through Aetrix?
Please submit a Request for Quotation (RFQ) for DF3687A01FPJMH 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 DF3687A01FPJMH reliable?
The price and inventory of DF3687A01FPJMH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DF3687A01FPJMH is usually 5 days.
3.What payment methods are accepted for DF3687A01FPJMH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DF3687A01FPJMH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DF3687A01FPJMH?
DF3687A01FPJMH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DF3687A01FPJMH 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 DF3687A01FPJMH?
For technical support, including DF3687A01FPJMH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DF3687A01FPJMH requirements.
6.How does Aetrix verify that DF3687A01FPJMH is sourced from the original manufacturer or authorized distributors?
All DF3687A01FPJMH 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 DF3687A01FPJMH meets industry standards.
7.What is the process for return or replacement of DF3687A01FPJMH?
All DF3687A01FPJMH units undergo pre-shipment inspection (PSI). If there is an issue with DF3687A01FPJMH, 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 DF3687A01FPJMH part is unused and in its original packaging.
Return procedure for DF3687A01FPJMH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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