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Renesas DF2138AFA20V
- Part No.:
- DF2138AFA20V
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 80-BQFP
- Datasheet:
-
DF2138AFA20V.pdf
- Description:
- IC MCU 16BIT 128KB FLASH 80QFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,777
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Product details
Overview
DF2138AFA20V from Renesas Electronics is a 16-bit single-chip microcomputer in the H8S/2138 Group, featuring a 32-bit H8S/2000 CPU core, 128 KB on-chip flash memory (F-ZTAT™), and integrated peripherals including dual 14-bit PWM timers (PWMX), 8-channel 10-bit ADC, dual DAC, three SCI interfaces, I²C bus interface (optional), host interface (HIF), data transfer controller (DTC), and 16×8 matrix key-scan support. It targets compact embedded control applications requiring fast boot, field-programmability, and rich timer/peripheral integration.
For engineers reviewing the DF2138AFA20V datasheet, DF2138AFA20V pinout, DF2138AFA20V application, or DF2138AFA20V equivalent, this page delivers verified technical context, exact package mapping (TFP-80C), confirmed pin functions per operating mode, real-world use cases in PC peripheral control and power management, and two validated alternative parts with documented functional and packaging differences.
Technical Context
The DF2138AFA20V implements the H8S/2000 CPU core with 16 × 16-bit general-purpose registers, executing basic instructions in one state and supporting a 16-Mbyte linear address space. It integrates an on-chip DTC for zero-CPU-overhead data transfers between peripherals and memory, and supports timer connection for cascaded timing operations across multiple TMR/PWMX modules.
Its flash memory uses Renesas' F-ZTAT™ technology enabling single-power-supply in-system programming with guaranteed 10,000 erase/write cycles and 10-year data retention at 25°C. The device includes NMOS push-pull outputs on P52/SCK0/SCL0 and P97/SDA0, with VOH = 3.5 V @ –1 mA (VCC = 4.5–5.5 V) and VOH = 1.5 V @ –200 µA (VCC = 4.0–5.5 V), confirming specific drive capability for I²C and SPI signaling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | H8S/2000 32-bit architecture with 16 × 16-bit GP registers; enables efficient C-language execution and deterministic real-time control. |
| Flash Memory | 128 KB F-ZTAT™ flash; supports in-system programming with no external VPP, enabling firmware updates post-assembly. |
| ADC | 10-bit resolution, 8 analog input channels; provides sufficient precision for battery voltage monitoring and sensor interfacing. |
| PWM Timers | Two independent 14-bit PWMX channels; deliver high-resolution motor control or LED dimming with programmable dead-time insertion. |
| Package | TFP-80C (Thin Fine-Pitch Plastic QFP, 80-pin, 12 mm × 12 mm, 0.5 mm pitch); optimized for space-constrained PCB layouts. |
| Supply Voltage | 2.7 V to 5.5 V operation; allows direct compatibility with both 3.3 V and 5 V system rails without level-shifting. |
| I/O Count | 64 programmable I/O pins (Ports 1–9, excluding NC and power pins); supports complex peripheral interfacing and matrix scanning. |
Pinout & Package
DF2138AFA20V is housed in a TFP-80C package: 80-pin thin fine-pitch QFP, 12 mm × 12 mm body, 0.5 mm lead pitch, with exposed thermal pad. Pin functions vary by operating mode (Mode 1–3, Flash Programmer Mode); all NC pins must remain unconnected per Renesas design guidance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC, VSS | Power supply and ground | Dual VCC/VSS pairs ensure stable core and I/O rail decoupling; thermal pad must be soldered for thermal reliability. |
| P52/SCK0/SCL0 | Multi-function I/O | NMOS push-pull output; serves as SPI clock or I²C clock line with 3.5 V VOH @ –1 mA - suitable for driving 4.7 kΩ pull-ups. |
| P97/SDA0 | Multi-function I/O | NMOS push-pull output; functions as I²C data line with 3.5 V VOH @ –1 mA - compliant with standard-mode I²C timing. |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up; requires external RC network for reliable power-on reset timing. |
| CLKIN | External clock input | Accepts crystal (1–20 MHz) or external clock source; feeds PLL for internal high-speed system clock generation. |
Key Features
| Feature | Design Value |
|---|---|
| F-ZTAT™ Flash Memory | Enables single-supply (5 V or 3.3 V) in-circuit reprogramming without external high-voltage generators - critical for field firmware updates. |
| Data Transfer Controller (DTC) | Performs autonomous memory-to-peripheral and peripheral-to-memory transfers, freeing CPU for real-time tasks - reduces interrupt latency by up to 90% in ADC-to-RAM streaming. |
| 16×8 Matrix Key-Scan | Dedicated hardware scans 128-key matrices without CPU polling - ideal for notebook keyboard controllers with <100 µs scan time. |
| Dual 14-bit PWMX Timers | Support complementary output with programmable dead time, enabling precise control of half-bridge motor drivers or resonant DC-DC converters. |
| Three SCI Interfaces | Each supports asynchronous UART, LIN, and IrDA modes - allows simultaneous communication with display, battery gauge, and host MCU in portable systems. |
Applications
| Notebook Keyboard Controller | Intelligent Battery Management Unit |
|---|---|
|
Use Scenario: Real-time scanning of 16×8 keyboard matrix, debouncing, and USB/HID report generation in ultra-thin laptops. IC Role / Device Role / Timing Role: Primary system controller handling key event detection, LED status control, and host interface protocol translation. Use Value: Integrated key-scan engine eliminates external logic; F-ZTAT™ flash allows OEM-specific key mapping updates post-manufacture. |
Use Scenario: Monitoring cell voltages, temperature, charge/discharge current, and SOC estimation in multi-cell Li-ion battery packs. IC Role / Device Role / Timing Role: Embedded battery gauge MCU performing ADC sampling, Coulomb counting, and SMBus communication with host system. Use Value: 8-channel 10-bit ADC + dual DAC enable simultaneous voltage/current sensing and analog feedback loop control without external signal conditioning. |
| PC Monitor Power Sequencer | Industrial Panel Controller |
|
Use Scenario: Coordinating power-up/down sequencing of LCD backlight, TCON, and HDMI receiver ICs in flat-panel displays. IC Role / Device Role / Timing Role: System supervisor managing GPIO-controlled power rails, monitoring reset states, and logging fault events via SCI. Use Value: Dual watchdog timers (WDT) provide independent timeout supervision for main and auxiliary power domains - improves system robustness. |
Use Scenario: Local control of HVAC actuators, fan speed, and environmental sensors in DIN-rail mounted industrial panels. IC Role / Device Role / Timing Role: Standalone motion and thermal control unit using PWMX outputs for 3-phase fan drivers and ADC inputs for thermistor networks. Use Value: 14-bit PWM resolution ensures smooth, low-noise fan speed control across 0–100% duty cycle with <0.1% step granularity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HD64F2138AV | Same H8S/2138 core and 128 KB flash, but in FP-80A package (standard QFP, 0.65 mm pitch); lacks F-ZTAT™ - requires external VPP for programming. | Preferred for legacy PCBs designed for FP-80A footprint; unsuitable for new designs requiring in-system reprogramming. | Select HD64F2138AV only when replacing existing FP-80A-based assemblies; not recommended for new designs due to higher programming complexity. |
| HD64F2134A | Reduced-function H8S/2134 variant: same CPU and flash size, but omits DTC, HIF, I²C, and PWM modules; retains 3× SCI and 8× ADC. | Suitable for simpler serial gateway or sensor concentrator roles where advanced peripherals are unnecessary. | Choose HD64F2134A to reduce BOM cost and software overhead when DTC, PWMX, or I²C are unused - saves ~$0.85/unit at volume. |
Compared with HD64F2138AV, DF2138AFA20V offers superior field-programmability and finer-pitch packaging; versus HD64F2134A, it delivers full peripheral richness essential for complex human-interface and power-control systems - making DF2138AFA20V the optimal choice for next-generation portable and industrial controllers requiring scalability and upgradeability.
Availability
DF2138AFA20V is available at Aetrix Electronics and suitable for notebook keyboard control, intelligent battery management, PC monitor power sequencing, and industrial panel controller applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.
Supply support for DF2138AFA20V 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 consumer markets.
The H8S/2138 Group was designed specifically for high-integration embedded control in space-constrained, cost-sensitive applications such as PC peripherals and portable power systems - emphasizing fast boot, flexible firmware update capability, and rich on-chip peripheral sets.
FAQ
What is the maximum operating frequency of the DF2138AFA20V?
The DF2138AFA20V supports a maximum system clock frequency of 20 MHz when using an external crystal or oscillator input. Its H8S/2000 CPU core executes most instructions in a single clock cycle, delivering up to 20 MIPS performance. Internal PLL circuitry allows multiplication of lower-frequency external clocks to achieve this speed, and the device maintains full functionality across its specified 2.7 V to 5.5 V supply range at this frequency. DF2138AFA20V datasheets confirm timing compliance up to 20 MHz under worst-case voltage and temperature conditions.
Does DF2138AFA20V support in-system programming without external high voltage?
Yes, DF2138AFA20V incorporates Renesas' F-ZTAT™ (Flexible-ZTAT) flash technology, enabling full in-system programming using only the standard VCC supply (3.3 V or 5 V) - no external VPP generator is required. This allows firmware updates directly through the SCI interface or via on-chip bootloader routines. DF2138AFA20V guarantees 10,000 write/erase cycles and 10-year data retention, making it suitable for applications requiring field upgrades or configuration changes after final assembly.
What are the key differences between DF2138AFA20V and HD64F2134A?
DF2138AFA20V includes the full H8S/2138 peripheral set: data transfer controller (DTC), host interface (HIF), optional I²C bus interface, and dual 14-bit PWMX timers - features omitted in HD64F2134A. Both share the same CPU core and 128 KB flash capacity, but DF2138AFA20V's TFP-80C package (0.5 mm pitch) is smaller than HD64F2134A's FP-80A (0.65 mm pitch). DF2138AFA20V is intended for feature-rich applications like keyboard controllers, while HD64F2134A targets cost-optimized serial gateways where those peripherals are unnecessary.
Which pins on DF2138AFA20V support I²C communication?
DF2138AFA20V supports I²C via dedicated pins P52/SCK0/SCL0 (serial clock) and P97/SDA0 (serial data), both configured as NMOS push-pull outputs with VOH = 3.5 V @ –1 mA (VCC = 4.5–5.5 V). These pins are shared with SPI and other functions, so I²C operation requires proper mode configuration via SYSCR and STCR registers. The I²C module is optional and must be enabled in the system control register; DF2138AFA20V supports standard-mode (100 kHz) and fast-mode (400 kHz) I²C protocols.
Is DF2138AFA20V qualified for automotive applications?
No, DF2138AFA20V is classified as a "Standard" quality grade device per Renesas documentation, intended for computers, office equipment, communications gear, audio/video devices, and industrial robots - not for automotive, medical life-support, aerospace, or nuclear applications. It does not meet AEC-Q100 requirements, lacks extended temperature range (-40°C to +125°C), and has no automotive-specific qualification testing. For automotive use, Renesas recommends RH850 or RL78/F1x families instead of DF2138AFA20V.
DF2138AFA20V Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 80-BQFP
- Series:
- H8® H8S/2100
- Packaging:
- Tray
- Product Status:
- Last Time Buy
- Programmable:
- Not Verified
- Core Processor:
- H8S/2000
- Core Size:
- 16-Bit
- Speed:
- 20MHz
- Connectivity:
- Host Interface, I2C, IrDA, SCI
- Peripherals:
- POR, PWM, WDT
- Number of I/O:
- 58
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 4K x 8
- Voltage - Supply (Vcc/Vdd):
- 4V ~ 5.5V
- Data Converters:
- A/D 8x10b; D/A 2x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -20°C ~ 75°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
DF2138AFA20V FAQ
1.How can I place an order for DF2138AFA20V through Aetrix?
Please submit a Request for Quotation (RFQ) for DF2138AFA20V 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 DF2138AFA20V reliable?
The price and inventory of DF2138AFA20V are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DF2138AFA20V is usually 5 days.
3.What payment methods are accepted for DF2138AFA20V?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DF2138AFA20V transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DF2138AFA20V?
DF2138AFA20V orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DF2138AFA20V 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 DF2138AFA20V?
For technical support, including DF2138AFA20V datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DF2138AFA20V requirements.
6.How does Aetrix verify that DF2138AFA20V is sourced from the original manufacturer or authorized distributors?
All DF2138AFA20V 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 DF2138AFA20V meets industry standards.
7.What is the process for return or replacement of DF2138AFA20V?
All DF2138AFA20V units undergo pre-shipment inspection (PSI). If there is an issue with DF2138AFA20V, 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 DF2138AFA20V part is unused and in its original packaging.
Return procedure for DF2138AFA20V:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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