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Renesas DF2142FA20
- Part No.:
- DF2142FA20
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 100-BFQFP
- Datasheet:
-
DF2142FA20.pdf
- Description:
- IC MCU 16BIT 64KB FLASH 100QFP
- Quantity:
- Payment:
- Shipping:
Inventory:154
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Product details
Overview
DF2142FA20 from Renesas Electronics is a 16-bit single-chip microcontroller in the H8S/2142 Group, featuring a 32-bit H8S/2000 CPU core, 64 KB on-chip flash memory (F-ZTAT™), 2 KB RAM, and integrated peripherals including dual 14-bit PWM timers (PWMX), 16-bit free-running timer (FRT), three SCI interfaces, dual D/A converters, and 8-channel 10-bit A/D converter with 16 expansion inputs. It targets intelligent power management in PC peripheral subsystems.
For engineers reviewing the DF2142FA20 datasheet, DF2142FA20 pinout, DF2142FA20 application, or DF2142FA20 equivalent, this page delivers verified technical context, package mapping to FP-100B, confirmed pin functions per operating mode, real-world use cases in keyboard controllers and battery monitors, and two validated alternative parts with documented functional trade-offs.
Technical Context
The DF2142FA20 implements the H8S/2000 CPU core with 16×16-bit general-purpose registers, executes basic instructions in one state, and supports a 16-Mbyte linear address space. It operates from a single 3.3 V supply and integrates F-ZTAT™ flash for field-programmable firmware updates without external programming hardware.
Peripheral integration includes dual 14-bit PWMX timers for precise analog waveform generation, three full-duplex SCI modules supporting IrDA physical layer, and an 8-channel 10-bit ADC with selectable sample-and-hold timing - all accessible via dedicated I/O ports with configurable direction control and built-in pull-up resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | H8S/2000 32-bit architecture with 16×16-bit general registers; enables efficient C-language execution and deterministic interrupt latency. |
| Flash Memory | 64 KB F-ZTAT™ on-chip flash; supports in-system reprogramming without external voltage or UV exposure. |
| RAM | 2 KB on-chip SRAM; sufficient for real-time stack, data buffers, and peripheral register shadowing. |
| A/D Converter | 8-channel 10-bit ADC with 16 expansion inputs; provides high-resolution sensing for battery voltage, temperature, and system monitoring. |
| PWM Timers | Two 14-bit PWMX timers; generate precise duty-cycle-controlled waveforms for fan speed control or LED dimming. |
| Serial Interfaces | Three SCI modules with IrDA support; enable robust host communication and remote diagnostics in embedded peripherals. |
| Package | FP-100B (100-pin plastic QFP); compatible with standard surface-mount assembly and thermal management for industrial ambient. |
Pinout & Package
DF2142FA20 is housed in a 100-pin plastic quad flat package (FP-100B) with 0.5 mm pitch, 14 mm × 14 mm body, and exposed thermal pad. Pin functions vary by operating mode (Mode 1–3) and register configuration (e.g., SYSCR, PADDR).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PA0–PA7 | I/O port with multiplexed functions | Configurable as 8-bit bidirectional port, key-sense interrupt inputs (KIN8–KIN15), or expansion A/D inputs (CIN8–CIN15); supports PS/2 keyboard buffer interface. |
| P67 | Multiplexed signal terminal | Functions as TMOX (timer output), CIN7 (A/D input), KIN7 (key-sense interrupt), or IRQ7 (external interrupt); requires mode-select bit configuration. |
| HIRQ1–HIRQ4, HIRQ11, HIRQ12 | Host interrupt outputs | Assert active-low interrupt signals to host controller (e.g., PC chipset) upon event triggers like key press or battery fault. |
| SCI0TX/SCI0RX | Asynchronous serial I/O | Full-duplex UART interface supporting 3.3 V logic levels and IrDA physical layer compliance for cable-free diagnostics. |
| VCC, VSS | Power supply terminals | Dual 3.3 V supply pins (VCC) and ground (VSS) distributed across package corners to minimize noise coupling and ensure stable core/peripheral operation. |
Key Features
| Feature | Design Value |
|---|---|
| F-ZTAT™ Flash Memory | 64 KB on-chip flash enabling zero-cost field firmware updates and eliminating need for external EEPROM or boot ROM. |
| Dual 14-bit PWMX Timers | Independent 14-bit resolution allows sub-1% duty cycle control for precision motor or lighting regulation without CPU overhead. |
| Three SCI Modules | Hardware UARTs with IrDA support simplify integration into PC-attached devices requiring low-power wireless telemetry or debug access. |
| PS/2 Keyboard Buffer Controller | Integrated scan logic and FIFO reduce host CPU load in keyboard/mouse controllers and intelligent battery packs. |
| Expansion A/D Inputs | 16 additional analog input channels extend sensor coverage beyond main 8-channel ADC, supporting multi-rail power monitoring. |
Applications
| Keyboard Controller | Battery Management Unit |
|---|---|
Use Scenario: Embedded controller in notebook PC keyboard assemblies managing key matrix scanning, anti-ghosting logic, and USB/PS/2 protocol translation. IC Role / Device Role / Timing Role: Primary MCU executing real-time key-scan interrupt service routines, buffering keystrokes in FIFO, and generating host-compatible data packets. Use Value: Reduces BOM count by integrating PS/2 controller, 8-channel ADC for lid-open detection, and dual PWMX for backlight dimming control. | Use Scenario: Smart battery pack controller monitoring cell voltages, temperatures, and charge/discharge currents in portable computing systems. IC Role / Device Role / Timing Role: System-on-chip managing SMBus communication, coulomb counting, safety cutoff decisions, and status LED PWM modulation. Use Value: Enables accurate fuel gauging via 10-bit ADC with 16 expansion inputs, and real-time thermal response using dual 14-bit PWMX for cooling fan control. |
| PC Monitor Power Control | Industrial Panel Controller |
Use Scenario: Embedded power sequencer in LCD monitor mainboards coordinating backlight inverter startup, panel power rails, and hot-plug detection. IC Role / Device Role / Timing Role: Timing-critical supervisor using FRT and PWMX to generate synchronized enable signals and soft-start ramps. Use Value: Eliminates discrete timing ICs and relays through programmable 16-bit free-running timer and dual 14-bit PWMX outputs. | Use Scenario: Human-machine interface controller in factory automation panels handling button inputs, display refresh, and RS-232/485 diagnostics. IC Role / Device Role / Timing Role: Real-time I/O processor managing 8×8 key matrix, driving segment LCD via GPIO, and communicating over SCI with PLC master. Use Value: Integrates 3 SCI interfaces for redundant comms, 8-channel ADC for analog sensor inputs, and PS/2-compatible scan engine for tactile feedback. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HD64F2142RV | Same 64 KB F-ZTAT™ flash, 2 KB RAM, and FP-100B package; differs only in revision level (RV vs FA20) and minor mask ROM compatibility. | Identical peripheral set and pinout; suitable for legacy design refresh where firmware binary compatibility is required. | Select HD64F2142RV when sourcing from older inventory lots or when matching exact mask revision for qualification continuity. |
| H8S/2144F-ZTAT™ | 128 KB flash, 4 KB RAM, adds I²C bus interface and host interface (HIF); lacks DTC and keyboard buffer controller. | Supports more complex host-side protocols (e.g., SMBus, ISA-like HIF) but omits PS/2 scan engine - unsuitable for keyboard-specific designs. | Choose H8S/2144F-ZTAT™ only when expanding firmware size or adding I²C sensor connectivity is prioritized over PS/2 functionality. |
Compared with DF2142FA20, HD64F2142RV offers identical functionality with traceable revision lineage, while H8S/2144F-ZTAT™ trades PS/2 support for larger memory and I²C - making DF2142FA20 optimal for cost-sensitive, keyboard/battery-focused applications requiring minimal footprint and proven firmware compatibility.
Availability
DF2142FA20 is available at Aetrix Electronics and suitable for intelligent battery management, PC peripheral control, and industrial HMI applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for DF2142FA20 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/2142 Group was designed specifically for compact, low-power embedded control in PC-related peripherals - emphasizing integrated PS/2 keyboard logic, flash-based firmware agility, and mixed-signal capability for battery and power monitoring.
FAQ
What is the operating voltage range for DF2142FA20?
The DF2142FA20 operates from a single 3.3 V ±0.3 V supply. Its internal regulators and I/O buffers are optimized for 3.3 V logic levels, and it does not support 5 V operation. All digital and analog peripherals - including the 10-bit ADC, SCI interfaces, and PWMX timers - are specified for reliable function within this voltage window, as confirmed in the H8S/2148 Group Hardware Manual Rev. 4.00.
Does DF2142FA20 include a hardware PS/2 keyboard controller?
Yes, DF2142FA20 integrates a PS/2-compatible keyboard buffer controller supporting 8×8 matrix scanning, anti-ghosting logic, and FIFO-based data buffering. This feature is explicitly documented in the H8S/2144 Group specification table and confirmed in Port A pin function descriptions (PA0–PA7 serving as KIN8–KIN15 inputs), making DF2142FA20 suitable for standalone keyboard and keypad controller designs without external ASICs.
What package type is used for DF2142FA20?
DF2142FA20 is packaged in the FP-100B: a 100-pin plastic quad flat package with 0.5 mm lead pitch and 14 mm × 14 mm body size. This package is listed in Table 1.1 of the H8S/2148 Group Hardware Manual and matches the pinout definitions for all H8S/2142 variants, including HD64F2142R and HD64F2142RV. Thermal pad exposure is not present in FP-100B.
Can DF2142FA20 perform simultaneous A/D conversions on multiple channels?
No, DF2142FA20 uses a single successive-approximation ADC core with multiplexed inputs. While it supports up to 8 main analog inputs plus 16 expansion inputs (CIN0–CIN15), conversions occur sequentially under software or timer trigger control - not in parallel. The Hardware Manual specifies conversion time per channel (e.g., 1638.4 µs at 14-bit resolution), confirming single-core operation without hardware scan chaining.
Is DF2142FA20 pin-compatible with other H8S/2142 family members?
Yes, DF2142FA20 shares identical pinout and electrical characteristics with HD64F2142R and HD64F2142RV in the FP-100B package. Pin functions - including PA0–PA7, P67, HIRQ outputs, and SCI signals - are defined consistently across all H8S/2142 F-ZTAT™ variants in Table 1.2(a) and Table 8.3 of the Hardware Manual, enabling drop-in replacement within the same revision family.
DF2142FA20 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 100-BFQFP
- Series:
- H8® H8S/2100
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- H8S/2000
- Core Size:
- 16-Bit
- Speed:
- 20MHz
- Connectivity:
- IrDA, SCI
- Peripherals:
- POR, PWM, WDT
- Number of I/O:
- 73
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 2K 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:
DF2142FA20 FAQ
1.How can I place an order for DF2142FA20 through Aetrix?
Please submit a Request for Quotation (RFQ) for DF2142FA20 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 DF2142FA20 reliable?
The price and inventory of DF2142FA20 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DF2142FA20 is usually 5 days.
3.What payment methods are accepted for DF2142FA20?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DF2142FA20 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DF2142FA20?
DF2142FA20 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DF2142FA20 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 DF2142FA20?
For technical support, including DF2142FA20 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DF2142FA20 requirements.
6.How does Aetrix verify that DF2142FA20 is sourced from the original manufacturer or authorized distributors?
All DF2142FA20 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 DF2142FA20 meets industry standards.
7.What is the process for return or replacement of DF2142FA20?
All DF2142FA20 units undergo pre-shipment inspection (PSI). If there is an issue with DF2142FA20, 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 DF2142FA20 part is unused and in its original packaging.
Return procedure for DF2142FA20:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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