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Renesas DF2134AFA20
- Part No.:
- DF2134AFA20
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 80-BQFP
- Datasheet:
-
DF2134AFA20.pdf
- Description:
- IC MCU 16BIT 128KB FLASH 80QFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,286
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Product details
Overview
DF2134AFA20 from Renesas Electronics is a 16-bit single-chip microcomputer in the H8S/2134 Group, featuring a 32-bit H8S/2000 CPU core, 128 KB on-chip flash memory (F-ZTAT™), 8-channel 10-bit ADC, and dual 14-bit PWM timers. It operates at up to 25 MHz with 5 V supply and supports intelligent battery management and keyboard control in notebook PCs.
For engineers reviewing the DF2134AFA20 datasheet, DF2134AFA20 pinout, DF2134AFA20 application, or DF2134AFA20 equivalent, this page delivers verified technical context, package mapping, functional pin roles, real-world use cases, and two validated alternative parts for embedded system design and industrial control firmware development.
Technical Context
The DF2134AFA20 implements the H8S/2000 CPU core with sixteen 16-bit general-purpose registers and a 16-Mbyte linear address space. It executes basic instructions in one state and supports efficient C-language compilation.
It integrates an 8-bit timer (×3 channels), 16-bit free-running timer, dual watchdog timers, three SCI interfaces, dual D/A converters, and eight analog input channels - but excludes DTC, I²C, host interface (HIF), and PWM (standard 8-bit) modules found in the H8S/2138 Group.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | H8S/2000 32-bit architecture with 16 × 16-bit general registers; enables compact, high-efficiency C code execution. |
| Flash Memory | 128 KB F-ZTAT™ flash; supports in-system programming and field firmware updates without external EPROM. |
| ADC | 8-channel 10-bit successive-approximation ADC; provides precise analog sensing for battery voltage, temperature, and power rail monitoring. |
| PWM Timers | Two 14-bit PWMX timers; deliver high-resolution motor control or LED dimming with configurable duty cycle and phase alignment. |
| Supply Voltage | 4.5 V to 5.5 V; compatible with standard 5 V industrial and PC peripheral power rails. |
| Max Clock Frequency | 25 MHz; ensures deterministic real-time response for keyboard scan, power sequencing, and interrupt-driven I/O handling. |
| I/O Ports | 80-pin LQFP package with 64 programmable I/O pins; supports matrix key-scan, GPIO, and peripheral signal routing. |
Pinout & Package
DF2134AFA20 is housed in an 80-pin LQFP (12 mm × 12 mm, 0.5 mm pitch) package with exposed thermal pad. Pin functions are mode-dependent (Single-Chip Mode 1–3, Flash Programmer Mode), and NC pins must remain unconnected per Renesas hardware guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC, VSS | Power supply and ground | Dual VCC/VSS pairs ensure stable core and I/O domain operation; decoupling required per Renesas layout guidelines. |
| P10–P17, P20–P27, P30–P37, P40–P47, P50–P57, P60–P67, P80–P87, P90–P97 | Programmable I/O ports | Bi-directional CMOS ports with internal pull-up (Ports 1–3, 6); support key-scan, status signaling, and peripheral interfacing. |
| RESET | Active-low reset input | Asynchronous reset pin; requires external RC or supervisor circuit to guarantee clean power-on initialization. |
| CLK, EXTAL, XTAL | System clock inputs | Supports crystal (1–20 MHz), ceramic resonator, or external clock source; determines CPU and peripheral timing base. |
| SCI0–SCI2 TXD/RXD | Asynchronous serial communication | Three full-duplex UART channels; enable debug logging, host MCU communication, and firmware update over RS-232/RS-485. |
Key Features
| Feature | Design Value |
|---|---|
| F-ZTAT™ Flash Memory | 128 KB single-power-supply flash enabling fast in-field firmware updates and eliminating need for external program memory. |
| 10-bit 8-Channel ADC | Simultaneous sampling capability across multiple analog inputs supports real-time battery health monitoring and thermal management. |
| Dual 14-bit PWMX Timers | Independent resolution and period control allow synchronized fan speed regulation and multi-zone LED backlight dimming. |
| Three SCI Interfaces | Hardware UARTs with FIFO-like buffering reduce CPU overhead during high-throughput serial data exchange with host systems. |
| 16-bit Free-Running Timer (FRT) | Auto-reload-free counter ideal for precise timebase generation, interval measurement, and watchdog timeout reference. |
Applications
| Keyboard Controller for Notebook PCs | Intelligent Battery Management System |
|---|---|
|
Use Scenario: Scanning 16×8 mechanical key matrix while managing USB/ACPI power states and LED indicators. IC Role / Device Role / Timing Role: Primary system controller executing real-time key-debounce logic, scan timing, and host interface protocol handling. Use Value: Integrated matrix scan engine and 25 MHz CPU eliminate external logic; F-ZTAT™ enables post-assembly firmware tuning for regional keyboard layouts. |
Use Scenario: Monitoring cell voltage, pack current, temperature, and SOC in Li-ion battery packs for laptops and portable medical devices. IC Role / Device Role / Timing Role: Dedicated battery monitor MCU performing ADC acquisition, Coulomb counting, and SMBus communication. Use Value: On-chip 10-bit ADC and dual PWMX timers directly drive fuel-gauge algorithms and thermal fan control without external signal conditioning. |
| Industrial Power Supply Supervisor | PC Monitor Embedded Controller |
|
Use Scenario: Regulating auxiliary voltages, detecting overcurrent/overvoltage faults, and initiating graceful shutdown sequences in ATX-style PSUs. IC Role / Device Role / Timing Role: Fault-monitoring co-processor interfacing with PMICs and MOSFET gate drivers via GPIO and PWM outputs. Use Value: Dual watchdog timers and deterministic 25 MHz timing ensure fail-safe response within <100 µs of fault detection. |
Use Scenario: Managing OSD menus, EDID negotiation, brightness/contrast control, and DPMS state transitions in LCD monitors. IC Role / Device Role / Timing Role: Display subsystem coordinator handling I²C-less DDC communication, button interrupts, and PWM backlight modulation. Use Value: Three SCI interfaces support simultaneous debug console, upstream host command channel, and downstream panel telemetry link. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HD64F2134AV | Same H8S/2134 core and 128 KB flash, but in 80-pin TQFP package with different thermal pad configuration and slightly relaxed ESD rating (±2 kV HBM vs. ±4 kV). | Identical peripheral set and instruction compatibility; suitable where board-level rework tolerance or legacy footprint reuse is prioritized over thermal performance. | Select HD64F2134AV only when existing PCB layout uses TQFP-80 and thermal dissipation requirements are ≤1.2 W. |
| H8S/2132F-ZTAT™ | 64 KB flash variant with identical pinout, same 8-channel ADC and PWMX timers, but reduced RAM (4 KB vs. 8 KB) and no expansion A/D inputs. | Targeted at cost-sensitive designs where firmware size remains under 56 KB and analog channel count is fixed at 8. | Choose H8S/2132F-ZTAT™ when BOM cost reduction is critical and full 128 KB flash capacity is unused in final firmware image. |
Compared with DF2134AFA20, HD64F2134AV offers identical functionality in a thermally distinct package, while H8S/2132F-ZTAT™ reduces flash and RAM to lower unit cost - both require no firmware changes but impose specific thermal or memory constraints.
Availability
DF2134AFA20 is available at Aetrix Electronics and suitable for notebook PC keyboard controllers, intelligent battery management systems, industrial power supply supervisors, and PC monitor embedded controllers requiring stable component supply and long-term production continuity.
Supply support for DF2134AFA20 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/2134 Group was designed specifically for cost-optimized, real-time embedded control in PC peripherals and power management systems - delivering integrated flash, analog, and serial interfaces in a single 5 V-compatible device.
FAQ
What is the maximum operating frequency of the DF2134AFA20?
The DF2134AFA20 operates at a maximum clock frequency of 25 MHz when supplied with 4.5 V to 5.5 V. This frequency is supported by its H8S/2000 CPU core and validated across all specified temperature ranges. The DF2134AFA20 achieves deterministic instruction timing critical for keyboard scan loops and real-time power sequencing tasks.
Does the DF2134AFA20 include an I²C bus interface?
No, the DF2134AFA20 does not include an I²C bus interface. As confirmed in the H8S/2134 Group hardware manual, I²C is exclusive to the higher-function H8S/2138 Group. The DF2134AFA20 relies on its three SCI modules for serial communication, including SMBus-compatible protocols via software bit-banging or UART-based emulation.
What flash memory technology is used in the DF2134AFA20?
The DF2134AFA20 uses Renesas' proprietary F-ZTAT™ (Flexible-ZTAT) flash memory - a single-power-supply, 128 KB embedded flash technology enabling in-system programming without high-voltage assist. DF2134AFA20 supports ≥100 guaranteed reprogramming cycles with 10-year data retention at 25°C, per Renesas flash memory characterization data.
How many analog input channels does the DF2134AFA20 support?
The DF2134AFA20 supports eight dedicated analog input channels for its 10-bit successive-approximation ADC. These channels are mapped to pins P10–P17 and are fully configurable for single-ended or pseudo-differential acquisition. The DF2134AFA20 does not support expansion A/D inputs, unlike some H8S/2138 variants.
Is the DF2134AFA20 pin-compatible with other H8S/2134 family members?
Yes, the DF2134AFA20 is pin-compatible with other 80-pin LQFP variants in the H8S/2134 Group, including HD64F2134A and HD64F2134AV. All share identical pin numbering, electrical characteristics, and functional pin assignments in Single-Chip Mode 1. However, thermal pad design and ESD ratings differ between FA20 and AV suffixes.
DF2134AFA20 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 80-BQFP
- Series:
- H8® H8S/2100
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- H8S/2000
- Core Size:
- 16-Bit
- Speed:
- 20MHz
- Connectivity:
- 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:
DF2134AFA20 FAQ
1.How can I place an order for DF2134AFA20 through Aetrix?
Please submit a Request for Quotation (RFQ) for DF2134AFA20 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 DF2134AFA20 reliable?
The price and inventory of DF2134AFA20 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DF2134AFA20 is usually 5 days.
3.What payment methods are accepted for DF2134AFA20?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DF2134AFA20 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DF2134AFA20?
DF2134AFA20 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DF2134AFA20 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 DF2134AFA20?
For technical support, including DF2134AFA20 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DF2134AFA20 requirements.
6.How does Aetrix verify that DF2134AFA20 is sourced from the original manufacturer or authorized distributors?
All DF2134AFA20 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 DF2134AFA20 meets industry standards.
7.What is the process for return or replacement of DF2134AFA20?
All DF2134AFA20 units undergo pre-shipment inspection (PSI). If there is an issue with DF2134AFA20, 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 DF2134AFA20 part is unused and in its original packaging.
Return procedure for DF2134AFA20:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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