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Renesas DF2148RTE20IV
- Part No.:
- DF2148RTE20IV
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 100-TQFP
- Datasheet:
-
DF2148RTE20IV.pdf
- Description:
- IC MCU 16BIT 128KB FLASH 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,820
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Product details
Overview
DF2148RTE20IV from Renesas Electronics is a 16-bit single-chip microcomputer in the H8S/2148 Group, featuring a 32-bit H8S/2000 CPU core, 128 KB on-chip flash memory (F-ZTAT™), 4 KB RAM, and integrated peripherals including dual I²C bus interfaces (optional), three SCI channels, dual D/A converters, 8-channel 10-bit A/D converter, PS/2-compatible keyboard buffer controller, and host interface (HIF) with four ports. It targets intelligent power management and embedded PC peripheral control.
For engineers reviewing the DF2148RTE20IV datasheet, DF2148RTE20IV pinout, DF2148RTE20IV application, or DF2148RTE20IV equivalent, key selection considerations include its 100-pin TFP package, 3.3 V operation (V version), F-ZTAT™ flash architecture enabling field reprogramming, dual I²C support for sensor/EEPROM interfacing, and PS/2 keyboard controller for notebook system integration.
Technical Context
The DF2148RTE20IV implements the H8S/2000 CPU core with sixteen 16-bit general-purpose registers and executes basic instructions in one state. It supports a 16-Mbyte linear address space and efficient C-language compilation.
On-chip peripherals include a 16-bit free-running timer (FRT), four 8-bit timers (TMR), two watchdog timers (WDT), sixteen 8-bit PWM channels, two 14-bit PWMX channels, three serial communication interfaces (SCI) with IrDA support, and an on-chip data transfer controller (DTC) for CPU-independent DMA transfers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | H8S/2000 32-bit architecture with 16×16-bit general registers; enables deterministic real-time execution and compact C code footprint. |
| Flash Memory | 128 KB F-ZTAT™ flash; supports in-system programming, fast erase/write cycles, and secure firmware updates without external programmers. |
| RAM | 4 KB on-chip SRAM; sufficient for stack, heap, and real-time data buffers in embedded control applications. |
| Supply Voltage | 3.3 V ±0.3 V; compatible with modern low-voltage logic families and reduces power consumption versus 5 V MCUs. |
| A/D Converter | 8-channel 10-bit successive-approximation ADC with expansion inputs up to 16 channels; suitable for battery voltage monitoring and thermal sensing. |
| I²C Interface | Two optional I²C bus modules (IIC); enable direct connection to temperature sensors, EEPROMs, and PMICs without external level shifters. |
| Package | 100-pin TFP (Thin Fine-Pitch) package; 14 mm × 14 mm footprint with 0.5 mm pitch; optimized for space-constrained notebook and monitor PCB layouts. |
Pinout & Package
DF2148RTE20IV is housed in a 100-pin TFP (Thin Fine-Pitch) package with 0.5 mm lead pitch and 14 mm × 14 mm body size. The package supports fine-pitch surface-mount assembly and thermal dissipation appropriate for industrial and consumer embedded systems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply | Main 3.3 V supply input for core and I/O; requires local decoupling per Renesas layout guidelines. |
| VSS | Ground | Digital ground reference; multiple pins provided for low-impedance return path and noise reduction. |
| RESET | Reset input | Active-low asynchronous reset; internal pull-up ensures defined startup state without external resistor. |
| CLK | External clock input | Accepts 1–20 MHz crystal or external clock source; drives internal PLL for CPU and peripheral timing. |
| PA0–PA7 | Port A I/O | 8-bit bidirectional port with built-in pull-ups; configurable as key-scan inputs (KIN8–KIN15), A/D inputs (CIN8–CIN15), or address lines (A16–A23). |
| HIFSD | Host interface serial data | Bi-directional serial data line for 4-port HIF; supports ISA-compatible host communication in notebook battery management subsystems. |
| SDA0/SDA1 | I²C data | Open-drain data lines for two independent I²C buses; require external 2.2–10 kΩ pull-up resistors to VCC. |
| SCL0/SCL1 | I²C clock | Open-drain clock lines synchronized to internal peripheral clock; support standard (100 kHz) and fast-mode (400 kHz) I²C protocols. |
Key Features
| Feature | Design Value |
|---|---|
| F-ZTAT™ Flash Architecture | Enables single-power-supply in-circuit reprogramming with sector erase times < 10 ms; eliminates need for high-voltage programming hardware. |
| PS/2 Keyboard Buffer Controller | Hardware-accelerated scan matrix decoding for up to 16×8 keys; offloads CPU during keyboard polling and debouncing. |
| Dual Independent I²C Interfaces | Each supports master/slave mode, 7-bit addressing, and clock stretching; allows concurrent communication with multiple sensors and nonvolatile memory devices. |
| Data Transfer Controller (DTC) | Four-channel DMA engine with auto-reload and chaining; moves ADC results or SCI buffers without CPU intervention, reducing interrupt load by >70%. |
| Host Interface (HIF) with Four Ports | ISA-compatible parallel interface supporting byte-wide host access; used for firmware updates and status reporting in smart battery packs and AC adapters. |
Applications
| Smart Battery Management | Notebook Keyboard Controller |
|---|---|
Use Scenario: Real-time monitoring of cell voltage, temperature, and charge/discharge current in Li-ion battery packs compliant with SMBus v1.1. IC Role / Device Role / Timing Role: Primary system controller executing fuel-gauge algorithm, SMBus protocol stack, and safety shutdown logic. Use Value: Integrated 10-bit ADC, dual I²C, and HIF enable direct sensor interfacing and host communication without external transceivers or glue logic. |
Use Scenario: Scanning 16×8 mechanical key matrix and translating keycodes into PS/2 scan codes for laptop mainboard. IC Role / Device Role / Timing Role: Dedicated keyboard controller handling debounce, rollover detection, and LED status management. Use Value: On-chip PS/2 buffer controller and 8-bit TMRs eliminate need for external keyboard MCU, reducing BOM cost and PCB area. |
| PC Monitor Power Control | Industrial Panel Controller |
Use Scenario: Managing power sequencing, backlight dimming via PWMX, and EDID EEPROM access in LCD monitors. IC Role / Device Role / Timing Role: System management unit coordinating DPMS states, thermal throttling, and display interface handshaking. Use Value: Dual 14-bit PWMX outputs drive CCFL or LED backlights with < 0.1% duty-cycle resolution; I²C interface reads EDID data directly. |
Use Scenario: Controlling relay banks, reading analog sensor inputs, and communicating over RS-485 in factory HMIs. IC Role / Device Role / Timing Role: Standalone embedded controller executing ladder logic emulation and real-time I/O scanning. Use Value: 16-bit FRT and timer connection capability allow precise 1 ms task scheduling; 100-pin TFP provides ample GPIO for discrete I/O expansion. |
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 core, 128 KB flash, 4 KB RAM, but in FP-100B (plastic QFP) package; no TFP thermal performance optimization. | Preferred for prototyping or cost-sensitive industrial boards where fine-pitch assembly is not available. | Select HD64F2148AV when board assembly uses standard QFP reflow profiles and thermal constraints are less stringent. |
| HD64F2147NV | H8S/2147N variant: 64 KB flash, 2 KB RAM, same 100-pin TFP package, but lacks DTC, PWM, keyboard controller, and HIF modules. | Suitable for simpler power monitoring tasks without complex peripheral orchestration or host interface requirements. | Choose HD64F2147NV only when application does not require DTC-driven data movement, PS/2 keyboard support, or multi-port HIF connectivity. |
Compared with DF2148RTE20IV, HD64F2148AV offers identical functionality in a more manufacturable QFP package but with higher thermal resistance, while HD64F2147NV reduces cost and complexity at the expense of peripheral richness-making DF2148RTE20IV optimal for full-featured embedded controllers requiring both I²C sensor networks and host-facing interfaces.
Availability
DF2148RTE20IV is available at Aetrix Electronics and suitable for smart battery packs, notebook keyboard subsystems, PC monitor power management, and industrial panel controllers requiring stable component supply across extended production lifecycles.
Supply support for DF2148RTE20IV 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 markets.
The H8S/2148 Group was designed specifically for embedded PC peripheral control-including intelligent battery management, keyboard controllers, and monitor system management-with emphasis on integrated interfaces, low-voltage operation, and field-programmable flash.
FAQ
What is the operating voltage range for DF2148RTE20IV?
The DF2148RTE20IV operates at a nominal supply voltage of 3.3 V with a tolerance of ±0.3 V (3.0 V to 3.6 V). This 3-V version is explicitly indicated by the "V" suffix in the part number and is validated for stable operation across the full industrial temperature range (−40°C to +85°C). Operation outside this range may cause functional failure or data corruption in the on-chip flash memory.
Does DF2148RTE20IV support in-system programming of its flash memory?
Yes, DF2148RTE20IV features F-ZTAT™ (Flexible-ZTAT) flash technology that enables full in-system programming using only the standard 3.3 V supply-no external high-voltage programmer is required. Firmware updates can be performed via SCI, I²C, or HIF interfaces using Renesas' standard flash programming algorithms documented in the H8S/2148 Hardware Manual Rev. 4.00.
How many I²C interfaces does DF2148RTE20IV include, and are they enabled by default?
DF2148RTE20IV includes two I²C bus interfaces (IIC0 and IIC1), implemented as optional modules per the H8S/2148 Group specification. They are not active by default; configuration requires setting the IICEN bit in the corresponding module enable register (MSTPCR) and initializing the I²C control registers (ICCR, ICDR). Both support standard-mode (100 kHz) and fast-mode (400 kHz) operation.
What is the function of the HIF interface on DF2148RTE20IV?
The host interface (HIF) on DF2148RTE20IV provides four parallel ports compatible with ISA bus timing, enabling direct communication between the DF2148RTE20IV and a host processor (e.g., laptop EC or main CPU). It supports byte-wide read/write access to internal registers and memory-mapped peripherals, commonly used for firmware updates, status reporting, and command execution in smart battery and AC adapter applications.
Is DF2148RTE20IV pin-compatible with other members of the H8S/2148 Group?
DF2148RTE20IV shares the same 100-pin TFP package and pinout with other H8S/2148 Group variants such as HD64F2148A and HD64F2148AV, but functional compatibility depends on feature enablement. For example, HIF, DTC, and keyboard controller signals are present on all TFP-packaged H8S/2148 parts, though their use requires matching software initialization and peripheral clock gating in the DF2148RTE20IV firmware.
DF2148RTE20IV Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 100-TQFP
- Series:
- H8® H8S/2100
- Packaging:
- Bulk
- Product Status:
- Active
- 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
DF2148RTE20IV FAQ
1.How can I place an order for DF2148RTE20IV through Aetrix?
Please submit a Request for Quotation (RFQ) for DF2148RTE20IV 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 DF2148RTE20IV reliable?
The price and inventory of DF2148RTE20IV are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DF2148RTE20IV is usually 5 days.
3.What payment methods are accepted for DF2148RTE20IV?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DF2148RTE20IV transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DF2148RTE20IV?
DF2148RTE20IV orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DF2148RTE20IV 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 DF2148RTE20IV?
For technical support, including DF2148RTE20IV datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DF2148RTE20IV requirements.
6.How does Aetrix verify that DF2148RTE20IV is sourced from the original manufacturer or authorized distributors?
All DF2148RTE20IV 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 DF2148RTE20IV meets industry standards.
7.What is the process for return or replacement of DF2148RTE20IV?
All DF2148RTE20IV units undergo pre-shipment inspection (PSI). If there is an issue with DF2148RTE20IV, 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 DF2148RTE20IV part is unused and in its original packaging.
Return procedure for DF2148RTE20IV:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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