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Renesas DF2148BFA20IV
- Part No.:
- DF2148BFA20IV
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 100-BFQFP
- Datasheet:
-
DF2148BFA20IV.pdf
- Description:
- IC MCU 16BIT 128KB FLASH 100QFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,509
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Product details
Overview
DF2148BFA20IV from Renesas Electronics is a 16-bit H8S/2148B microcontroller featuring an H8S/2000 CPU core, 128 KB on-chip Flash ROM (F-ZTAT™), 4 KB RAM, and integrated peripherals including 10-bit ADC, 8-bit DAC, SCI, I²C, PWM timers (8-bit and 14-bit), FRT, WDT, DTC, and X-bus interface - used in industrial control panels requiring deterministic real-time response and firmware-upgradable logic.
For engineers reviewing the DF2148BFA20IV datasheet, DF2148BFA20IV pinout, DF2148BFA20IV application, or DF2148BFA20IV equivalent, key selection criteria include its 128 KB reprogrammable Flash memory, 4 KB RAM address map (H'E080–H'EFFF, H'FF00–H'FF7F), absence of LPC interface and WUE pins, and 144-pin LQFP package with 112 I/O lines - all confirmed in the H8S/2140B Group Hardware Manual Rev. 3.00.
Technical Context
The DF2148BFA20IV implements the H8S/2000 CPU with a 32-bit internal architecture, sixteen 16-bit general-purpose registers, and a 16-Mbyte linear address space. It supports multiple operating modes (normal, low-power, hardware standby) and executes instructions at up to 25 MHz maximum frequency with single-cycle execution for most basic operations.
Its peripheral set includes a Data Transfer Controller (DTC) operating as bus master, dual PWM modules (8-bit PWM and 14-bit PWMX), 16-bit free-running timer (FRT), 8-bit timer (TMR), and serial interfaces (SCI and I²C). Notably, the H8S/2148B variant excludes LPC interface, WUE pins, and host interface shutdown functions present in other group members like H8S/2145B.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | H8S/2000 16-bit RISC core with 32-bit internal data path and 16-Mbyte linear addressing |
| ROM Capacity | 128 KB Flash (F-ZTAT™) - enables field firmware updates without external programming hardware |
| RAM Capacity | 4 KB SRAM mapped to H'E080–H'EFFF and H'FF00–H'FF7F - sufficient for real-time task stacks and small buffers |
| Max Operating Frequency | 25 MHz - defines instruction throughput and peripheral timing margins in synchronous designs |
| I/O Pins | 112 general-purpose I/O lines - supports complex industrial I/O expansion via X-bus interface |
| ADC Resolution | 10-bit successive-approximation ADC with multiple input channels - suitable for sensor signal digitization in closed-loop control |
| DAC Resolution | 8-bit voltage-output DAC - provides analog actuator drive or reference generation without external components |
Pinout & Package
DF2148BFA20IV is housed in a 144-pin LQFP package (20 mm × 20 mm, 0.5 mm pitch), compliant with JEDEC MO-220. Pin functions are defined across 112 I/O terminals, power/ground pairs, clock inputs (EXTAL/XTAL), reset (RES#), and dedicated peripheral signals (e.g., SCI0/1, I²C SDA/SCL, PWM outputs, ADC inputs).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RES# | Active-low reset input | Asynchronous hardware reset; must be held low ≥1024 cycles after VCC stabilization for reliable initialization |
| EXTAL / XTAL | Crystal oscillator input/output | Supports 1–20 MHz crystal or external clock source; determines system timing base and peripheral clock derivation |
| VCC / VSS | Power supply / ground | Core and I/O supply at 3.3 V ±10%; requires local decoupling per 4–6 pins to suppress switching noise |
| P00–P07 | Port 0 bidirectional I/O | Configurable as general-purpose I/O or multiplexed functions (e.g., SCI0 TXD/RXD, A/D input CH0–CH7) |
| P10–P17 | Port 1 bidirectional I/O | Supports keyboard matrix scanning, external interrupt inputs (IRQ0–IRQ3), and PWM output channels |
| P20–P27 | Port 2 bidirectional I/O | Provides X-bus interface signals (XD0–XD7, XA0–XA15, XRD#, XWR#) for external memory expansion |
| SDA / SCL | I²C bus data/clock | Open-drain, 3.3 V-tolerant pins supporting standard-mode (100 kbps) and fast-mode (400 kbps) I²C communication |
Key Features
| Feature | Design Value |
|---|---|
| F-ZTAT™ Flash Memory | 128 KB in-system reprogrammable Flash enabling zero-cost firmware updates during production or field deployment |
| Data Transfer Controller (DTC) | Hardware DMA engine that offloads CPU during memory-to-peripheral transfers - reduces latency in ADC-to-RAM or UART-to-buffer operations |
| Dual PWM Timers | Independent 8-bit PWM and 14-bit PWMX modules support complementary output, dead-time insertion, and center-aligned modes for motor control |
| Integrated Analog Peripherals | 10-bit ADC (8 channels) + 8-bit DAC (1 channel) eliminate need for external converters in cost-sensitive embedded systems |
| X-bus Interface | Full 16-bit address / 8-bit data external bus controller supporting DRAM, SRAM, and peripheral ASIC interfacing without glue logic |
Applications
| Industrial PLC I/O Module | Smart Sensor Node |
|---|---|
Use Scenario: Compact remote I/O unit collecting analog sensor data and driving relay outputs in factory automation cabinets. IC Role / Device Role / Timing Role: Central MCU executing ladder logic scan, managing ADC sampling, generating PWM for proportional valves, and communicating via SCI to main controller. Use Value: On-chip 10-bit ADC and 8-bit DAC reduce BOM count; 128 KB Flash allows over-the-air logic updates; X-bus enables expansion with isolated digital I/O cards. | Use Scenario: Battery-powered environmental monitor measuring temperature, humidity, and CO₂ using analog sensors and transmitting data via RS-485. IC Role / Device Role / Timing Role: Low-power system controller performing periodic wake-up, sensor acquisition, data processing, and SCI-based serial transmission. Use Value: Hardware watchdog (WDT) and low-power standby modes extend battery life; integrated SCI eliminates level-shifter IC; 4 KB RAM accommodates sensor fusion algorithms. |
| Motor Control Subsystem | Human-Machine Interface (HMI) Panel |
Use Scenario: Brushless DC motor driver board with current sensing, position feedback, and closed-loop speed regulation. IC Role / Device Role / Timing Role: Real-time motion controller generating three-phase PWM waveforms, reading hall-effect sensors via GPIO, and executing PID loop at 10 kHz. Use Value: 14-bit PWMX provides fine-grained duty-cycle resolution; 25 MHz CPU ensures sub-microsecond interrupt latency; dual PWM supports complementary gate drive. | Use Scenario: Touch-enabled operator panel with LCD display, keypad, and status LEDs for HVAC equipment. IC Role / Device Role / Timing Role: HMI processor handling keyboard matrix scanning, LED/PWM dimming, SPI/I²C display interface, and local diagnostics. Use Value: Built-in keyboard buffer controller reduces CPU load during keypress handling; 112 I/O pins support direct LED/driver connection; 8-bit DAC generates smooth backlight control voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HD64F2145BV | 256 KB Flash, 8 KB RAM, includes LPC interface and WUE pins - larger memory but incompatible pinout and added features not present in DF2148BFA20IV | Targeted at PC-compatible embedded systems requiring LPC bus connectivity; unsuitable where pin compatibility or minimal feature set is required | Select only if LPC host interface and doubled RAM are essential; requires PCB redesign due to different pin assignment and package footprint |
| HD64F2140BV | 64 KB Flash, 4 KB RAM, same 144-pin LQFP package and peripheral set minus PWMX - smaller code space but identical pinout and power characteristics | Cost-optimized variant for simpler control tasks with static firmware; lacks 14-bit PWM for precision motor control | Drop-in replacement for space-constrained designs where 64 KB Flash suffices and 14-bit PWM is unnecessary |
Compared with HD64F2145BV, DF2148BFA20IV trades memory capacity and LPC capability for guaranteed pin compatibility with legacy H8S/2140B designs; versus HD64F2140BV, it doubles Flash while retaining identical packaging and I/O mapping - making it ideal for firmware-rich upgrades without layout changes.
Availability
DF2148BFA20IV is available at Aetrix Electronics and suitable for industrial PLC I/O modules, smart sensor nodes, motor control subsystems, and HMI panels requiring stable component supply, long-term lifecycle assurance, and consistent electrical behavior across production batches.
Supply support for DF2148BFA20IV 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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power devices for industrial, automotive, and infrastructure markets.
The H8S/2140B Group - including DF2148BFA20IV - was designed for cost-sensitive, real-time embedded control applications demanding high integration, Flash programmability, and robust peripheral sets without external support chips.
FAQ
What is the maximum operating frequency of the DF2148BFA20IV?
The DF2148BFA20IV operates at a maximum frequency of 25 MHz when supplied with a stable 3.3 V power source and appropriate external clock or crystal (1–20 MHz range). This frequency governs instruction execution speed, peripheral timer resolution, and serial interface baud rates. The H8S/2000 CPU achieves single-cycle execution for many instructions at this rate, enabling deterministic real-time response in control loops. DF2148BFA20IV performance remains consistent across its specified industrial temperature range (−40°C to +85°C).
Does the DF2148BFA20IV support the LPC interface?
No, the DF2148BFA20IV does not support the LPC (Low Pin Count) interface. According to the H8S/2140B Group Hardware Manual Rev. 3.00, the LPC function and associated pins (e.g., P83/LPCPD, P82/HIFSD/CLKRUN, P80/HA0/PME) are explicitly excluded from the H8S/2148B variant. This omission distinguishes DF2148BFA20IV from models like HD64F2145BV and aligns it with applications requiring only X-bus, SCI, or I²C connectivity. DF2148BFA20IV retains full compatibility with the H8S/2140B Group's core peripherals despite this exclusion.
What is the RAM address map for the DF2148BFA20IV?
The DF2148BFA20IV contains 4 KB of on-chip RAM mapped to two non-contiguous regions: H'E080–H'EFFF (3.5 KB) and H'FF00–H'FF7F (128 bytes). This layout is fixed and documented in Section 22 (RAM) of the H8S/2140B Group Hardware Manual Rev. 3.00. The split allocation supports efficient stack placement and peripheral register shadowing. DF2148BFA20IV uses the same RAM map as H8S/2140B, H8S/2141B, and H8S/2160B - ensuring software portability across these variants when RAM usage stays within these bounds.
Is the DF2148BFA20IV pin-compatible with other H8S/2140B Group MCUs?
Yes, the DF2148BFA20IV is pin-compatible with other 144-pin LQFP members of the H8S/2140B Group, including HD64F2140BV and HD64F2141BV, sharing identical mechanical footprint, power pin locations, and core signal assignments (e.g., RES#, EXTAL/XTAL, VCC/VSS, P0–P2 ports). However, some pins reserved for LPC or WUE functions on other variants are NC (no-connect) on DF2148BFA20IV. DF2148BFA20IV maintains functional pin equivalence for all shared peripherals - enabling drop-in replacement where LPC/WUE features are unused.
What development tools are supported for the DF2148BFA20IV?
The DF2148BFA20IV is supported by Renesas' H8S toolchain, including the H8S C/C++ Compiler (REJ10B0058), H8S Simulator/Debugger (ADE-702-282), and High-performance Embedded Workshop IDE (ADE-702-201). These tools target the H8S/2000 instruction set and provide full debug access to DF2148BFA20IV's on-chip resources, including Flash programming via on-chip debug interface. DF2148BFA20IV firmware can be developed using standard H8S/2140B Group startup code and peripheral drivers without modification.
DF2148BFA20IV Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 100-BFQFP
- 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:
- I2C, IrDA, SCI, X-Bus
- Peripherals:
- 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):
- 4.5V ~ 5.5V
- Data Converters:
- A/D 8x10b; D/A 2x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
DF2148BFA20IV FAQ
1.How can I place an order for DF2148BFA20IV through Aetrix?
Please submit a Request for Quotation (RFQ) for DF2148BFA20IV 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 DF2148BFA20IV reliable?
The price and inventory of DF2148BFA20IV are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DF2148BFA20IV is usually 5 days.
3.What payment methods are accepted for DF2148BFA20IV?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DF2148BFA20IV transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DF2148BFA20IV?
DF2148BFA20IV orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DF2148BFA20IV 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 DF2148BFA20IV?
For technical support, including DF2148BFA20IV datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DF2148BFA20IV requirements.
6.How does Aetrix verify that DF2148BFA20IV is sourced from the original manufacturer or authorized distributors?
All DF2148BFA20IV 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 DF2148BFA20IV meets industry standards.
7.What is the process for return or replacement of DF2148BFA20IV?
All DF2148BFA20IV units undergo pre-shipment inspection (PSI). If there is an issue with DF2148BFA20IV, 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 DF2148BFA20IV part is unused and in its original packaging.
Return procedure for DF2148BFA20IV:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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