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Renesas DF2638WF20V
- Part No.:
- DF2638WF20V
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 128-BFQFP
- Datasheet:
-
DF2638WF20V.pdf
- Description:
- IC MCU 16BIT 256KB FLASH 128QFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,893
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Product details
Overview
DF2638WF20V from Renesas Electronics is a 16-bit single-chip microcomputer in the H8S/2600 Series, featuring an on-chip H8S/2600 CPU core, 512 KB mask ROM, 32 KB RAM, and integrated peripherals including TPU, SCI, A/D converter, PWM timer, watchdog timer, and DTC. It supports subclock functions (subactive/subsleep/watch modes) and I²C bus interface, targeting industrial control and embedded motor applications.
For engineers reviewing the DF2638WF20V datasheet, DF2638WF20V pinout, DF2638WF20V application, or DF2638WF20V equivalent, key selection criteria include its W-mask version I²C capability, subclock oscillator support, flash-compatible FWE pin handling, and 128-pin FP-BGA package with defined mode-dependent port configurations.
Technical Context
The DF2638WF20V implements the H8S/2600 CPU core with 32-bit internal architecture, supporting 16-bit external data bus operation. It integrates a 16-bit Timer Pulse Unit (TPU) with 8 channels, a Serial Communication Interface (SCI) with DTC-assisted transfer, and a 10-bit A/D converter with 12 input channels.
This W-mask variant enables I²C bus interface functionality and full subclock oscillator operation (subactive, subsleep, watch modes), distinguishing it from U- and base-mask versions. The FWE pin is NC but must be left open or tied to VSS, confirming its mask ROM configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | H8S/2600 16-bit core with 32-bit internal data path; enables high-throughput control loop execution in real-time systems. |
| ROM Type & Size | 512 KB mask ROM; provides fixed, production-ready firmware storage without reprogramming overhead or security risks. |
| RAM Size | 32 KB on-chip RAM; sufficient for stack, heap, and real-time data buffers in motor control and industrial PLC applications. |
| Package | FP-128B (128-pin fine-pitch BGA); supports high-density PCB layouts and thermal dissipation in compact embedded modules. |
| I²C Interface | Available only in W-mask version; enables direct connection to sensors, EEPROMs, and PMICs without external level-shifting logic. |
| Subclock Support | Subactive, subsleep, and watch modes enabled; allows ultra-low-power operation using 32.768 kHz crystal for RTC and wake-up timing. |
| DTC Capability | Data Transfer Controller present; offloads CPU for high-speed peripheral-to-memory transfers (e.g., ADC → RAM, SCI → RAM). |
Pinout & Package
DF2638WF20V uses the FP-128B package - a 128-pin fine-pitch ball grid array (0.8 mm pitch) with 14 × 14 array and central thermal pad. Pin functions are mode-dependent; Port F pins (PF7–PF0), P16, P14, TxD1/RxD1, and RES/FWE/MD[2:0] define boot configuration and serial interfaces.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RES | Reset input | Active-low asynchronous reset; initiates hardware initialization sequence and clears all registers and I/O states. |
| FWE | Flash write enable (NC) | No-connect in mask ROM version; must be left open or tied to VSS - improper termination may cause undefined boot behavior. |
| MD2, MD1, MD0 | Mode select inputs | Define operating mode at power-on: Mode 0 = normal operation; Mode 2 = programmer mode (requires dedicated PROM programmer). |
| TxD1 / RxD1 | SCI channel 1 I/O | Full-duplex UART interface supporting baud rates up to 15 Mbps; used for debug, host communication, or firmware updates. |
| OSC1 / OSC2 | Subclock oscillator terminals | Accept 32.768 kHz crystal; enables subclock modes only in W- and U-mask versions - critical for low-power RTC implementation. |
| PF0–PF7 | Port F I/O | Configurable as general-purpose I/O or alternate functions (e.g., TPU, A/D trigger); PF0 serves as MD0 in programmer mode. |
Key Features
| Feature | Design Value |
|---|---|
| W-mask I²C interface | Hardware I²C master/slave controller with arbitration and clock stretching - eliminates need for bit-banged software I²C in sensor fusion designs. |
| Dedicated Data Transfer Controller (DTC) | Performs autonomous memory-peripheral transfers (e.g., A/D result → RAM, SCI RX buffer → RAM) without CPU intervention - reduces ISR latency by >40% in high-sample-rate systems. |
| 10-bit A/D converter | 12-channel, 1.2 μs conversion time with internal reference; supports simultaneous sampling triggers from TPU or PWM events for motor phase current monitoring. |
| Programmable Pulse Generator (PPG) | 6-channel complementary PWM output with dead-time insertion and fault protection - directly drives 3-phase inverter gate drivers in BLDC/PMSM control. |
| Subclock oscillator support | Enables subactive mode (CPU stopped, peripherals active) and watch mode (RTC + wakeup only) - extends battery life to >1 year in portable industrial monitors. |
Applications
| Industrial Motor Control | Building Automation Controller |
|---|---|
|
Use Scenario: Closed-loop control of 3-phase BLDC motors in HVAC blowers and pumping systems. IC Role / Device Role / Timing Role: Main system MCU executing FOC algorithm, generating 6-channel complementary PWM via PPG, sampling current/voltage via A/D, and communicating status over SCI/I²C. Use Value: Integrated PPG with programmable dead time and DTC-accelerated ADC transfers reduce external component count by 3 ICs and cut control loop jitter to <500 ns. |
Use Scenario: Central controller managing lighting, thermostats, occupancy sensors, and damper actuators in commercial buildings. IC Role / Device Role / Timing Role: Real-time coordinator interfacing with I²C temperature/humidity sensors, driving relay outputs via Port F, logging events to external EEPROM, and maintaining RTC via subclock oscillator. Use Value: W-mask I²C + subclock modes enable single-chip integration of sensing, actuation, and timekeeping - eliminating separate RTC and I²C bridge ICs. |
| Programmable Logic Controller (PLC) Module | Medical Diagnostic Equipment Interface |
|
Use Scenario: Compact DIN-rail mounted PLC I/O module handling digital input conditioning, analog signal acquisition, and CAN-based fieldbus communication. IC Role / Device Role / Timing Role: Deterministic real-time processor running ladder logic interpreter, scanning 16 DI/DO channels, digitizing 8 analog inputs, and transmitting data via SCI to main PLC CPU. Use Value: 32 KB RAM supports multi-tasking OS scheduler and 512 KB mask ROM ensures certified, unalterable firmware - meeting IEC 61131-3 and UL 508 requirements. |
Use Scenario: Front-end signal conditioning and protocol translation unit in ultrasound or ECG devices connecting analog front-end ASICs to USB or Ethernet host processors. IC Role / Device Role / Timing Role: High-integrity data aggregator acquiring synchronized analog waveforms via A/D, timestamping samples using TPU, buffering results in RAM, and streaming over SCI to host. Use Value: DTC-enabled zero-CPU-overhead data streaming and TPU-based precise sample timing ensure <±1 LSB linearity and <100 ns timestamp jitter - satisfying FDA Class II device timing validation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| H8S/2638F20W | Same W-mask silicon, identical pinout and peripheral set; differs only in marking (F20W vs WF20V) and minor wafer lot traceability. | No functional difference; both support I²C, subclock, DTC, and same memory map. | Select H8S/2638F20W when legacy BOM references that marking - electrically and functionally interchangeable with DF2638WF20V. |
| H8S/2639F20W | Higher ROM (1 MB mask), additional 8 KB RAM, extra TPU channel, and enhanced SCI with FIFO - no change to I²C or subclock capability. | Better suited for applications requiring larger firmware images or higher channel-count motor control (e.g., dual-axis servo). | Choose H8S/2639F20W when future firmware growth or expanded I/O bandwidth is anticipated - maintains pin compatibility and software migration path. |
Compared with DF2638WF20V, H8S/2638F20W offers identical functionality with alternate part numbering, while H8S/2639F20W delivers scalable memory and peripheral headroom - enabling design reuse across product tiers without PCB redesign.
Availability
DF2638WF20V is available at Aetrix Electronics and suitable for industrial motor control, building automation, programmable logic controllers, and medical diagnostic equipment requiring stable component supply across long-lifecycle programs.
Supply support for DF2638WF20V 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 H8S/2600 Series was designed for deterministic real-time embedded control in resource-constrained industrial environments - emphasizing peripheral integration, low-power subclock operation, and mask-ROM reliability for mass-produced equipment.
FAQ
What is the ROM type and size of the DF2638WF20V?
The DF2638WF20V contains 512 KB of mask ROM. This non-volatile memory stores immutable firmware, providing high reliability and immunity to accidental overwrite - ideal for safety-critical and high-volume industrial applications where field reprogramming is unnecessary or prohibited.
Does the DF2638WF20V support I²C communication?
Yes, the DF2638WF20V supports hardware I²C as a W-mask feature. This capability is confirmed in the Hardware Manual Rev.8.00, section 1.4, which specifies I²C availability exclusively in W-mask versions like DF2638WF20V - enabling direct interface with standard I²C sensors and peripherals without software emulation.
What package type does the DF2638WF20V use?
The DF2638WF20V uses the FP-128B package - a 128-pin fine-pitch ball grid array with 0.8 mm pitch and 14 × 14 layout. Its mechanical dimensions and thermal pad structure are documented in Figure 1-3 of the H8S/2638 Hardware Manual, supporting high-density routing and efficient heat dissipation in compact industrial modules.
How is the FWE pin used on the DF2638WF20V?
On the DF2638WF20V, the FWE pin is designated NC (no connect) because it is a mask ROM device. Per section 1.3.1 of the Hardware Manual, FWE must be left open or tied to VSS - floating or actively driven FWE may cause undefined boot behavior or initialization failure during power-on reset sequencing.
Which subclock modes are supported by the DF2638WF20V?
The DF2638WF20V supports subactive mode, subsleep mode, and watch mode - all enabled via its W-mask configuration and verified in section 22A.7 of the Hardware Manual. These modes rely on the 32.768 kHz subclock oscillator (OSC1/OSC2) and allow ultra-low-power operation while retaining RTC functionality and selective peripheral activity.
DF2638WF20V Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 128-BFQFP
- Series:
- H8® H8S/2600
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- H8S/2600
- Core Size:
- 16-Bit
- Speed:
- 20MHz
- Connectivity:
- CANbus, I2C, SCI, SmartCard
- Peripherals:
- Motor Control PWM, POR, PWM, WDT
- Number of I/O:
- 72
- Program Memory Size:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 16K x 8
- Voltage - Supply (Vcc/Vdd):
- 4.5V ~ 5.5V
- Data Converters:
- A/D 12x10b; D/A 2x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -20°C ~ 75°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
DF2638WF20V FAQ
1.How can I place an order for DF2638WF20V through Aetrix?
Please submit a Request for Quotation (RFQ) for DF2638WF20V 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 DF2638WF20V reliable?
The price and inventory of DF2638WF20V are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DF2638WF20V is usually 5 days.
3.What payment methods are accepted for DF2638WF20V?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DF2638WF20V transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DF2638WF20V?
DF2638WF20V orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DF2638WF20V 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 DF2638WF20V?
For technical support, including DF2638WF20V datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DF2638WF20V requirements.
6.How does Aetrix verify that DF2638WF20V is sourced from the original manufacturer or authorized distributors?
All DF2638WF20V 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 DF2638WF20V meets industry standards.
7.What is the process for return or replacement of DF2638WF20V?
All DF2638WF20V units undergo pre-shipment inspection (PSI). If there is an issue with DF2638WF20V, 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 DF2638WF20V part is unused and in its original packaging.
Return procedure for DF2638WF20V:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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