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Renesas DF2148ATE20V
- Part No.:
- DF2148ATE20V
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 100-TQFP
- Datasheet:
-
DF2148ATE20V.pdf
- Description:
- IC MCU 16BIT 128KB FLASH 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,023
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Product details
Overview
DF2148ATE20V from Renesas Electronics is a 16-bit single-chip microcontroller in the H8S/2148 Group, featuring a 32-bit H8S/2000 CPU core, 128 KB on-chip flash memory (F-ZTAT™), 4 KB RAM, 8-channel 10-bit ADC, dual 14-bit PWM timers (PWMX), and integrated PS/2-compatible keyboard buffer controller. It operates at up to 20 MHz and targets embedded control in PC peripherals and intelligent power systems.
For engineers reviewing the DF2148ATE20V datasheet, DF2148ATE20V pinout, DF2148ATE20V application, or DF2148ATE20V equivalent, this page delivers verified technical identity, package mapping to TFP-100B, confirmed 100-pin LQFP footprint, real-time timer interconnectability, I²C option support, and validated alternative part selection for keyboard controller and monitor subsystem designs.
Technical Context
The DF2148ATE20V implements the H8S/2000 CPU core with 16 × 16-bit general-purpose registers, linear 16-Mbyte address space, and single-cycle instruction execution for C-compiled code efficiency. Its on-chip peripheral set includes two independent 14-bit PWM timers (PWMX), a 16-bit free-running timer (FRT), three SCI modules, and dual I²C bus interfaces (option-enabled).
It supports three operating modes (Mode 1–3) with configurable port functions-e.g., Port A pins PA7–PA0 serve as 8-bit I/O, key-sense interrupt inputs (KIN15–KIN8), expansion A/D inputs (CIN15–CIN8), or PS/2 interface signals (PS2CD–PS2AC)-and integrates a data transfer controller (DTC) for CPU-offload DMA transfers between peripherals and memory.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | H8S/2000 32-bit architecture with 16×16-bit registers; enables efficient C-language firmware and deterministic real-time response. |
| Flash Memory | 128 KB F-ZTAT™ flash; supports field updates, fast boot (<100 µs), and zero-wait-state operation at 20 MHz. |
| RAM | 4 KB on-chip SRAM; sufficient for stack, variables, and DTC descriptor tables without external memory. |
| ADC | 8-channel 10-bit successive-approximation ADC with 16 expansion inputs; supports battery voltage monitoring and thermal sensing in power management. |
| PWM Timers | Two 14-bit PWMX modules; generate precise backlight dimming or fan speed control waveforms with programmable dead time. |
| Package | TFP-100B: 100-pin thin fine-pitch LQFP (14 × 14 mm, 0.5 mm pitch); RoHS-compliant, industrial temperature grade (−40°C to +85°C). |
| Supply Voltage | 3.0 V to 3.6 V (VCC); compatible with modern low-voltage system rails and reduces power consumption vs. 5 V MCUs. |
| Max Clock | 20 MHz internal operation; achieves 20 MIPS throughput with no external crystal required for basic timing. |
Pinout & Package
DF2148ATE20V is housed in the TFP-100B package: a 100-pin thin fine-pitch LQFP (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad, optimized for compact PC peripheral and monitor control boards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC, VSS | Power supply and ground | Dedicated pairs per quadrant minimize noise coupling; VCC pins accept 3.3 V ±10%; VSS pins must be low-inductance connected to PCB ground plane. |
| PA0–PA7 | Port A bidirectional I/O | Configurable as 8-bit parallel port, KIN8–KIN15 key-scan inputs, CIN8–CIN15 analog inputs, or PS2AC–PS2CD keyboard interface lines. |
| P67 | Multi-function pin | Functions as TMOX (timer output), CIN7 (ADC input), KIN7 (key-sense interrupt), or IRQ7 (external interrupt); selected via SYSCR and P6DDR register settings. |
| HIFSD, HIRQ1–HIRQ4 | Host interface signals | HIFSD is host interface serial data; HIRQ1–HIRQ4 are open-drain interrupt outputs to ISA-style host controllers for event notification. |
| SCL0, SDA0 | I²C bus channel 0 | Supports standard-mode (100 kbps) and fast-mode (400 kbps) I²C communication; requires external 4.7 kΩ pull-ups for bus arbitration. |
Key Features
| Feature | Design Value |
|---|---|
| F-ZTAT™ Flash Technology | Enables in-system programming, secure firmware updates, and <100 µs reset-to-execution time-critical for hot-pluggable PC accessories. |
| Integrated Keyboard Buffer Controller | Hardware-accelerated PS/2 protocol handling offloads MCU core; supports 16×8 matrix scan and automatic key rollover detection. |
| Timer Interconnectability | FRT, TMR, and PWMX modules can be chained to build complex timing sequences (e.g., synchronized backlight + fan control) without CPU polling. |
| Data Transfer Controller (DTC) | Performs autonomous memory-to-peripheral transfers (e.g., ADC → RAM, SCI TX → buffer); eliminates ISR overhead and improves real-time determinism. |
| I²C Bus Interface (Option) | Two independent I²C channels (IIC0/IIC1) support slave/master roles; used for EEPROM configuration storage or sensor communication in monitor OSD subsystems. |
Applications
| Keyboard Controller | Monitor Power Management |
|---|---|
Use Scenario: Embedded controller in notebook keyboard assemblies managing key scanning, LED indicators, and USB/PS/2 translation. IC Role / Device Role / Timing Role: Primary system controller executing PS/2 protocol, debouncing keys, and driving status LEDs with PWM dimming. Use Value: Reduces BOM count by integrating keyboard buffer logic, ADC for battery voltage sensing, and dual PWM for RGB backlight control-all in one 100-pin LQFP. | Use Scenario: On-board microcontroller in LCD monitors regulating power sequencing, thermal shutdown, and OSD menu navigation. IC Role / Device Role / Timing Role: System supervisor coordinating DC-DC converter enable timing, reading thermistors via ADC, and generating PWM for CCFL/inverter dimming. Use Value: Enables fast wake-from-standby (<50 ms) using F-ZTAT™ flash and built-in WDT, while DTC handles continuous ADC sampling without CPU load. |
| Intelligent Battery Pack | Industrial Human-Machine Interface |
Use Scenario: Fuel gauge and protection unit inside laptop battery packs communicating with host via SMBus/I²C. IC Role / Device Role / Timing Role: Dedicated battery management controller performing coulomb counting, cell voltage balancing, and safety cutoff decisions. Use Value: Leverages 10-bit ADC accuracy (±1 LSB INL), dual I²C ports for host/SMBus and EEPROM comms, and 3.3 V operation matching battery pack logic rails. | Use Scenario: Front-panel controller in test equipment or medical displays managing button inputs, LCD contrast, and status LEDs. IC Role / Device Role / Timing Role: Real-time UI coordinator handling tactile feedback, display refresh synchronization, and fault logging to flash memory. Use Value: Uses timer connection feature to align LED blink patterns with display frame sync, and PS/2 compatibility simplifies integration with legacy panel encoder interfaces. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HD64F2148AV | Same H8S/2148 Group silicon; 3 V version with identical 128 KB flash, 4 KB RAM, and peripheral set-but packaged in FP-100B (standard-pitch LQFP). | Requires PCB layout change due to different land pattern (0.65 mm vs. 0.5 mm pitch); otherwise drop-in firmware replacement. | Select HD64F2148AV only when existing board uses FP-100B footprint and 3 V supply is confirmed. |
| H8S/2147N | 64 KB flash, 2 KB RAM, same CPU core and peripheral subset (no DTC, reduced TMR count), but retains dual PWMX and I²C option. | Suitable for cost-sensitive designs where full 128 KB flash and DTC are unnecessary-e.g., simpler keyboard controllers without advanced power features. | Choose H8S/2147N when firmware size <64 KB and autonomous data transfers are not required; verify I²C option is enabled in ordering code. |
Compared with HD64F2148AV, DF2148ATE20V offers finer-pitch packaging for higher-density layouts; versus H8S/2147N, it delivers double flash capacity and DTC acceleration-making DF2148ATE20V optimal for feature-rich PC peripheral controllers requiring field-upgradable firmware and real-time sensor data handling.
Availability
DF2148ATE20V is available at Aetrix Electronics and suitable for notebook keyboard controllers, LCD monitor power supervisors, intelligent battery packs, and industrial HMI panels requiring stable component supply across long-lifecycle production runs.
Supply support for DF2148ATE20V 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, and power solutions for automotive, industrial, and consumer markets.
The H8S/2148 Group was designed specifically for high-integration PC peripheral and display subsystem control-emphasizing fast flash execution, PS/2 hardware acceleration, and mixed-signal capability in compact packages.
FAQ
What is the correct package type and footprint for DF2148ATE20V?
DF2148ATE20V uses the TFP-100B package: a 100-pin thin fine-pitch LQFP with 0.5 mm lead pitch and 14 mm × 14 mm body size. This differs from the FP-100B (0.65 mm pitch); PCB land patterns must match TFP-100B dimensions, including thermal pad layout and solder mask definition, to ensure reliable reflow and thermal performance.
Does DF2148ATE20V include an integrated keyboard controller, and what protocols does it support?
Yes, DF2148ATE20V integrates a PS/2-compatible keyboard buffer controller supporting full 16×8 matrix scanning, automatic key rollover detection, and host interrupt signaling (HIRQ1–HIRQ4). It natively handles PS/2 protocol timing and debouncing in hardware-eliminating software overhead and enabling responsive keyboard response under heavy CPU load.
What are the flash memory specifications and programming capabilities of DF2148ATE20V?
DF2148ATE20V contains 128 KB of on-chip F-ZTAT™ flash memory with 100,000 write/erase cycles, sector erase capability, and in-system programmability via on-chip bootloader. It supports fast boot (<100 µs from reset), zero-wait-state execution at 20 MHz, and secure lock bits to prevent unauthorized firmware readout.
Can DF2148ATE20V operate with a 3.3 V supply, and what is its industrial temperature range?
Yes, DF2148ATE20V is a 3-V version device rated for 3.0 V to 3.6 V operation and qualified for the industrial temperature range of −40°C to +85°C. Its I/Os are 5 V tolerant only on designated pins (e.g., HIF interface); all general-purpose ports are strictly 3.3 V compatible and require level-shifting for 5 V system interfacing.
How many I²C interfaces does DF2148ATE20V support, and are they standard or optional?
DF2148ATE20V supports two I²C bus interfaces (IIC0 and IIC1), both implemented as optional modules. The "W" suffix in the product code (e.g., HD6432148SW) indicates I²C option inclusion; DF2148ATE20V includes this option and supports standard-mode (100 kbps) and fast-mode (400 kbps) operation with hardware address matching and arbitration.
DF2148ATE20V Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 100-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:
- 74
- 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:
DF2148ATE20V FAQ
1.How can I place an order for DF2148ATE20V through Aetrix?
Please submit a Request for Quotation (RFQ) for DF2148ATE20V 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 DF2148ATE20V reliable?
The price and inventory of DF2148ATE20V are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DF2148ATE20V is usually 5 days.
3.What payment methods are accepted for DF2148ATE20V?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DF2148ATE20V transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DF2148ATE20V?
DF2148ATE20V orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DF2148ATE20V 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 DF2148ATE20V?
For technical support, including DF2148ATE20V datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DF2148ATE20V requirements.
6.How does Aetrix verify that DF2148ATE20V is sourced from the original manufacturer or authorized distributors?
All DF2148ATE20V 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 DF2148ATE20V meets industry standards.
7.What is the process for return or replacement of DF2148ATE20V?
All DF2148ATE20V units undergo pre-shipment inspection (PSI). If there is an issue with DF2148ATE20V, 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 DF2148ATE20V part is unused and in its original packaging.
Return procedure for DF2148ATE20V:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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