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Renesas DF2138ATF20V
- Part No.:
- DF2138ATF20V
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 80-TQFP
- Datasheet:
-
DF2138ATF20V.pdf
- Description:
- IC MCU 16BIT 128KB FLASH 80TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,687
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Product details
Overview
DF2138ATF20V from Renesas Electronics is a 16-bit single-chip microcontroller 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), 16-bit free-running timer (FRT), 8-bit timer (TMR) ×4, dual SCI interfaces, dual DACs, 8-channel 10-bit ADC, I²C bus interface (optional), host interface (HIF), and data transfer controller (DTC). It operates at up to 25 MHz and targets embedded control in PC peripherals and power management systems.
For engineers reviewing the DF2138ATF20V datasheet, DF2138ATF20V pinout, DF2138ATF20V application, or DF2138ATF20V equivalent, key selection considerations include its 80-pin TFP-80C package, NMOS push-pull outputs on P52/P97, 2.7–5.5 V supply range, flash endurance of ≥100 erase/write cycles with 10-year data retention, and support for multiple low-power modes including subactive and hardware standby.
Technical Context
The DF2138ATF20V implements the H8S/2000 CPU architecture with sixteen 16-bit general-purpose registers and a 16-Mbyte linear address space. Its on-chip peripheral set includes two independent 14-bit PWMX modules supporting complementary output with dead-time insertion, an 8-channel 10-bit ADC with expansion inputs, and dual SCI channels supporting asynchronous communication and IrDA physical layer.
It integrates a programmable DTC for autonomous data movement between memory and peripherals without CPU intervention, and supports flexible clock configuration via internal high-speed oscillator, external crystal, or subclock input. The device uses F-ZTAT™ flash technology enabling in-system programming and fast boot from ROM or flash.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | H8S/2000 32-bit architecture with 16×16-bit general registers; executes basic instructions in one state for deterministic real-time response. |
| Flash Memory | 128 KB F-ZTAT™ flash; supports ≥100 erase/write cycles and 10-year data retention at 25°C - enables field firmware updates and long-life deployment. |
| ADC | 8-channel 10-bit successive-approximation ADC with expansion inputs; provides simultaneous sampling capability for multi-sensor monitoring in power control applications. |
| PWMX Timers | Two 14-bit PWM timers with complementary output and dead-time control; suitable for motor drive and DC-DC converter gate timing with precise duty-cycle resolution. |
| Supply Voltage | 2.7 V to 5.5 V operation; accommodates both 3.3 V and 5 V system rails without level-shifting, simplifying mixed-voltage board design. |
| Package | TFP-80C (80-pin thin fine-pitch QFP); 0.5 mm pitch, 12 mm × 12 mm body - compatible with standard surface-mount assembly processes. |
| Low-Power Modes | Subactive, sub-sleep, software/hardware standby; retains RAM and selected peripheral states while reducing current to µA-range - ideal for battery-backed systems. |
Pinout & Package
DF2138ATF20V is housed in an 80-pin TFP-80C (thin fine-pitch QFP) package with 0.5 mm lead pitch and 12 mm × 12 mm body size. Pin functions are mode-dependent, supporting single-chip, expanded, and flash programming configurations.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC, VSS | Power supply and ground | Dual VCC/VSS pairs per side ensure stable core and I/O rail decoupling; supports separate analog/digital ground partitioning. |
| P52/SCK0/SCL0 | Multi-function I/O | NMOS push-pull output; serves as SPI clock or I²C clock - requires external pull-up for open-drain I²C operation. |
| P97/SDA0 | Multi-function I/O | NMOS push-pull output; functions as SPI data or I²C data line - must be externally pulled up for I²C compliance. |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up; initiates full chip initialization and register clearing upon assertion. |
| CLK/EXTAL | External clock input | Accepts 1–25 MHz crystal or CMOS clock source; selects main system clock domain for CPU and peripherals. |
Key Features
| Feature | Design Value |
|---|---|
| F-ZTAT™ Flash Memory | Enables fast in-system programming and zero-latency boot from flash; eliminates need for external program memory in cost-sensitive designs. |
| Data Transfer Controller (DTC) | Performs DMA-like transfers between memory and peripherals (e.g., ADC → RAM, SCI → RAM) without CPU overhead - improves real-time throughput and reduces ISR load. |
| Timer Connection Function | Allows chaining of TMR channels (e.g., TMR0 → TMR1) to create 32-bit counters or cascaded event triggers - extends timing resolution beyond 16-bit limits. |
| Host Interface (HIF) | Provides dedicated 8-bit parallel bus for connecting to keyboard controllers or external ASICs; supports interrupt-driven handshake protocol for low-latency peripheral interfacing. |
| I²C Bus Interface (Optional) | Configurable as master or slave; supports standard-mode (100 kbps) and fast-mode (400 kbps) - enables direct connection to sensors, EEPROMs, and PMICs without external bridge ICs. |
Applications
| Keyboard Controller for Notebook PCs | Intelligent Battery Management System |
|---|---|
Use Scenario: Real-time scanning of 16×8 matrix keyboard with debounce, LED control, and USB/HID translation via host interface. IC Role / Device Role / Timing Role: Primary system controller executing keyboard scan logic, managing key event buffers, and synchronizing with host via HIF or SCI. Use Value: Integrated 16×8 key-scan hardware accelerator and dual SCI reduce BOM count and eliminate external scan controller ICs. | Use Scenario: Monitoring cell voltage, temperature, and charge/discharge current in multi-cell Li-ion packs with SMBus/I²C communication to host. IC Role / Device Role / Timing Role: Dedicated battery monitor MCU handling ADC sampling, Coulomb counting, fault detection, and SMBus packet generation. Use Value: On-chip 8-channel 10-bit ADC with expansion inputs and optional I²C interface enable direct sensor interfacing without signal conditioning or protocol translation ICs. |
| PC Monitor Power Control Unit | DC-DC Converter Supervisory Controller |
Use Scenario: Managing power sequencing, backlight dimming (via PWM), thermal shutdown, and OSD overlay in LCD monitors. IC Role / Device Role / Timing Role: System supervisor coordinating power-on reset, voltage rail monitoring, and PWM-based CCFL/LED backlight control. Use Value: Dual 14-bit PWMX timers with dead-time insertion provide precise, synchronized dimming signals for high-efficiency backlight drivers. | Use Scenario: Closed-loop control of synchronous buck converter using voltage-mode feedback, gate drive timing, and overcurrent protection. IC Role / Device Role / Timing Role: Digital PWM controller generating complementary gate drive signals with programmable dead time and cycle-by-cycle current limiting. Use Value: Hardware timer connection and PWMX modules allow sub-microsecond timing resolution and automatic fault shutdown - improving converter efficiency and reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HD64F2138AV | Same H8S/2138 core and pinout; mask ROM instead of flash; no F-ZTAT™ programming capability. | Suitable for fixed-function, high-volume production where firmware never changes; lacks field updateability. | Select HD64F2138AV only when firmware is finalized and cost-per-unit optimization outweighs flexibility needs. |
| R5F52108CDFP | RX210-series 32-bit MCU; higher performance (50 MHz), larger RAM (16 KB), enhanced peripherals (USB, CAN), but different instruction set and pinout. | Targets next-generation designs requiring USB connectivity, CAN bus, or higher computational throughput; not drop-in compatible. | Choose R5F52108CDFP for new designs needing modern peripherals and scalability; migration requires full hardware and firmware redesign. |
Compared with HD64F2138AV, DF2138ATF20V offers field-programmable flash for iterative development and firmware updates; compared with R5F52108CDFP, it provides proven, lower-cost control for legacy-compatible systems without USB/CAN requirements.
Availability
DF2138ATF20V is available at Aetrix Electronics and suitable for notebook keyboard controllers, intelligent battery packs, PC monitor power units, and DC-DC supervisory systems requiring stable component supply across extended product lifecycles.
Supply support for DF2138ATF20V 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 applications.
The H8S/2138 Group was designed for cost-sensitive, high-reliability embedded control in PC peripherals and power management systems - emphasizing integration, low-power operation, and rapid time-to-market with F-ZTAT™ flash.
FAQ
What is the maximum operating frequency of the DF2138ATF20V?
The DF2138ATF20V supports a maximum CPU clock frequency of 25 MHz when using the internal high-speed oscillator or an external crystal source. This frequency enables deterministic real-time execution of control loops and peripheral handling while maintaining compatibility with standard 5 V and 3.3 V system buses. The DF2138ATF20V achieves this performance within its specified 2.7–5.5 V supply range and thermal limits defined in the Renesas H8S/2138 hardware manual.
Does the DF2138ATF20V support in-system programming of its flash memory?
Yes, the DF2138ATF20V incorporates F-ZTAT™ (Flexible-ZTAT) flash memory that supports full in-system programming via its on-chip bootloader and SCI interface. This allows firmware updates without removing the DF2138ATF20V from the target board. Programming is performed under controlled voltage and timing conditions as specified in the Renesas hardware manual, with guaranteed endurance of at least 100 erase/write cycles and 10-year data retention at 25°C.
Which pins on the DF2138ATF20V have NMOS push-pull output drivers?
The DF2138ATF20V uses NMOS push-pull output drivers on pins P52/SCK0/SCL0 and P97/SDA0. These pins require external pull-up resistors when used in open-drain configurations such as I²C bus operation. Their VOH is specified at 3.5 V (IOH = –1 mA, VCC = 4.5–5.5 V) and 1.5 V (IOH = –1 mA, VCC < 4.5 V), confirming NMOS-only drive capability. This behavior is explicitly documented in the DC characteristics tables of the H8S/2138 hardware manual.
Can the DF2138ATF20V operate from a 3.3 V supply?
Yes, the DF2138ATF20V is fully specified to operate from a 3.3 V supply (within the 2.7–5.5 V range). All DC characteristics, including VOH, VOL, and timing parameters, are validated down to 2.7 V. At 3.3 V, the device maintains full functionality of its 128 KB flash, 8-channel ADC, dual PWMX timers, and SCI interfaces. The DF2138ATF20V's wide supply range eliminates the need for level shifters in mixed-voltage systems and supports direct interfacing with 3.3 V logic families.
Is the I²C interface on the DF2138ATF20V enabled by default?
No, the I²C interface on the DF2138ATF20V is optional and disabled by default. It must be explicitly enabled by setting the IICE bit (bit 4) in the STCR register (address 0xFFC3). Once enabled, the I²C module supports standard-mode (100 kbps) and fast-mode (400 kbps) operation as master or slave. The DF2138ATF20V's I²C pins (P52/SCL0 and P97/SDA0) share functions with SPI and general I/O, requiring proper pin configuration and external pull-ups for reliable bus operation.
DF2138ATF20V Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 80-TQFP
- 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:
DF2138ATF20V FAQ
1.How can I place an order for DF2138ATF20V through Aetrix?
Please submit a Request for Quotation (RFQ) for DF2138ATF20V 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 DF2138ATF20V reliable?
The price and inventory of DF2138ATF20V are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DF2138ATF20V is usually 5 days.
3.What payment methods are accepted for DF2138ATF20V?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DF2138ATF20V transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DF2138ATF20V?
DF2138ATF20V orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DF2138ATF20V 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 DF2138ATF20V?
For technical support, including DF2138ATF20V datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DF2138ATF20V requirements.
6.How does Aetrix verify that DF2138ATF20V is sourced from the original manufacturer or authorized distributors?
All DF2138ATF20V 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 DF2138ATF20V meets industry standards.
7.What is the process for return or replacement of DF2138ATF20V?
All DF2138ATF20V units undergo pre-shipment inspection (PSI). If there is an issue with DF2138ATF20V, 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 DF2138ATF20V part is unused and in its original packaging.
Return procedure for DF2138ATF20V:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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