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Renesas DF2148ATE20IV
- Part No.:
- DF2148ATE20IV
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 100-TQFP
- Datasheet:
-
DF2148ATE20IV.pdf
- Description:
- IC MCU 16BIT 128KB FLASH 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,464
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Product details
Overview
DF2148ATE20IV 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 D/A converters, 8-channel 10-bit A/D converter, three SCI interfaces, two I²C bus interfaces (optional), PS/2-compatible keyboard buffer controller, host interface (HIF), and data transfer controller (DTC). It targets PC peripheral control such as notebook keyboard and intelligent battery management.
For engineers reviewing the DF2148ATE20IV datasheet, DF2148ATE20IV pinout, DF2148ATE20IV application, or DF2148ATE20IV equivalent, key selection considerations include its F-ZTAT™ flash architecture for field-programmable firmware updates, 100-pin TFP-100B package with VCCB drive I/Os, dual 14-bit PWM timers (PWMX), and support for timer connection and interlinked I²C–DTC operation in embedded timing-critical systems.
Technical Context
The DF2148ATE20IV implements the H8S/2000 CPU core with sixteen 16-bit general-purpose registers in 32-bit configuration, executing basic instructions in one state and supporting a 16-Mbyte linear address space. Its on-chip memory includes 128 KB flash (F-ZTAT™) and 4 KB RAM, with flash access enabled via dedicated control registers at addresses H'(FF)FF80–H'(FF)FF87 when FLSHE = 1.
Peripheral integration includes a 16-bit free-running timer (FRT), four 8-bit timers (TMR), dual watchdog timers (WDT), two 14-bit PWM timers (PWMX), three serial communication interfaces (SCI) supporting IrDA, dual I²C bus interfaces (option-enabled), and an 8-channel 10-bit A/D converter with 16 expansion inputs. The DTC enables high-speed memory-to-peripheral transfers without CPU intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | H8S/2000 32-bit architecture with 16×16-bit general registers; executes basic instructions in one state for deterministic real-time response. |
| Flash Memory | 128 KB F-ZTAT™ flash; supports in-system programming and fast erase/write cycles for firmware updates post-assembly. |
| RAM | 4 KB on-chip SRAM; used for stack, variables, and temporary data storage during runtime execution. |
| A/D Converter | 8-channel 10-bit successive-approximation ADC with 16 expansion inputs; supports simultaneous sampling and configurable conversion cycles down to 12.8 µs. |
| PWM Timers | Two 14-bit PWMX timers; generate precise duty-cycle-controlled waveforms for motor control or power regulation. |
| I/O Drive | VCCB-drive I/O ports (e.g., Port A); enable direct interfacing with 3.3 V or 5 V logic without level shifters in mixed-voltage systems. |
| Package | TFP-100B: 100-pin thin fine-pitch QFP; 14 mm × 14 mm footprint with 0.5 mm pitch for compact PCB layout. |
Pinout & Package
DF2148ATE20IV is housed in a 100-pin TFP-100B thin fine-pitch quad flat package (QFP) with 0.5 mm lead pitch and 14 mm × 14 mm body size. All pins are electrically validated per Renesas Hardware Manual Rev.4.00 (2006).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PA0–PA7 (pins 10,11,20,21,30,31,47,48) | VCCB-drive I/O port | Configurable 8-bit bidirectional port with built-in MOS pull-ups; functions as key-sense interrupt inputs (KIN8–KIN15), expansion A/D inputs (CIN8–CIN15), or PS/2 keyboard interface signals. |
| P67 (pin 35) | Multi-function I/O | Supports TMOX output, CIN7 analog input, KIN7 key-sense interrupt, or IRQ7 external interrupt - selected by operating mode and register settings. |
| HIRQ1–HIRQ4, HIRQ11, HIRQ12 (pins 52–54,90–91) | Host interrupt outputs | Dedicated open-drain outputs for asserting interrupt requests to host systems (e.g., PC chipset) via ISA-compatible host interface. |
| SDA0/SDA1 (pins 67,70) | I²C data lines | Open-drain bidirectional data lines for optional dual I²C bus channels; require external pull-up resistors for standard-mode (100 kHz) or fast-mode (400 kHz) operation. |
| VCCB (pins 1,100) | Secondary I/O supply | Independent 3.0–5.5 V supply for I/O buffers; allows mixed-voltage interfacing while core runs at VCC = 2.7–3.6 V. |
Key Features
| Feature | Design Value |
|---|---|
| F-ZTAT™ Flash Architecture | Enables rapid in-system programming and sector-erase flexibility for iterative firmware development and field updates without socketing. |
| Dual 14-bit PWMX Timers | Provide high-resolution pulse-width modulation with independent period/duty control for precision motor speed or LED brightness regulation. |
| Data Transfer Controller (DTC) | Offloads CPU for memory-to-peripheral transfers (e.g., ADC → RAM, RAM → SCI), reducing interrupt overhead and improving real-time throughput. |
| PS/2-Compatible Keyboard Buffer | Hardware-accelerated scan-code buffering and debouncing for up to 16×8 matrix keyboards, eliminating software polling overhead. |
| Interlinked I²C–DTC Operation | Allows automatic DMA-triggered I²C data transfers upon completion of A/D conversions or timer events, enabling autonomous sensor data acquisition pipelines. |
Applications
| Keyboard Control System | Intelligent Battery Management |
|---|---|
Use Scenario: Embedded controller in notebook PC keyboard subsystem handling key matrix scanning, anti-ghosting logic, and USB/PS/2 protocol translation. IC Role / Device Role / Timing Role: Primary system-on-chip managing real-time key event detection, scan-code generation, and host interface arbitration via HIF and SCI. Use Value: Reduces BOM count by integrating keyboard buffer, A/D for thermal sensing, and dual PWM for backlight dimming - all within single 100-pin package. | Use Scenario: Firmware-controlled battery pack monitoring unit measuring cell voltages, temperatures, and charge/discharge currents in portable computing devices. IC Role / Device Role / Timing Role: Central measurement and safety controller performing periodic 10-bit A/D sampling, SOC estimation, and overvoltage/overcurrent protection sequencing. Use Value: Leverages on-chip 8-channel ADC with 16 expansion inputs and dual D/A converters for analog signal conditioning and reference generation - no external signal chain required. |
| PC Monitor Timing Controller | CD-ROM Drive Motor Control |
Use Scenario: Timing and interface bridge in LCD monitor implementing EDID readout, DDC communication, and OSD generation. IC Role / Device Role / Timing Role: Dual-role controller using I²C for EDID/EEPROM access and SCI for microcontroller-to-FPGA command relay with precise timing via FRT and timer connection. Use Value: Combines I²C, SCI, and 16-bit FRT in one device to synchronize display initialization sequences and manage hot-plug detection latency under 10 ms. | Use Scenario: Spindle and sled motor controller in optical disc drives requiring variable-speed rotation and precise seek positioning. IC Role / Device Role / Timing Role: Real-time motion controller generating 14-bit PWM waveforms for spindle speed regulation and using TMR/PWMX interconnection for closed-loop position feedback. Use Value: Eliminates external PWM generator and timer ICs by delivering 14-bit resolution, programmable dead-time insertion, and hardware timer chaining - reducing layout area and EMI. |
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 but rated for 3.0–3.6 V VCC only (no 5 V tolerance). | Restricted to low-voltage systems; lacks VCCB-drive I/Os for mixed-voltage interfacing. | Select HD64F2148AV only when full 3.3 V system design eliminates need for 5 V peripheral compatibility. |
| H8S/2147N | Reduced-function variant: same 64 KB flash/2 KB RAM, no DTC, fewer TMR channels, no keyboard buffer or HIF modules. | Suitable for cost-sensitive, lower-peripheral-count applications like simple power monitors or fan controllers. | Choose H8S/2147N where DTC, PS/2, and host interface are unnecessary - saves PCB area and BOM cost without sacrificing core CPU performance. |
Compared with HD64F2148AV and H8S/2147N, DF2148ATE20IV uniquely supports VCCB-drive I/Os for mixed-voltage designs, includes the full peripheral set (DTC, HIF, PS/2), and retains F-ZTAT™ flash configurability - making it optimal for PC peripheral subsystems requiring field-upgradable firmware and multi-protocol connectivity.
Availability
DF2148ATE20IV is available at Aetrix Electronics and suitable for notebook keyboard control, intelligent battery management, PC monitor timing subsystems, and optical drive motor control requiring stable component supply across extended production lifecycles.
Supply support for DF2148ATE20IV 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 formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power devices for industrial, automotive, and consumer markets.
The H8S/2148 Group, including DF2148ATE20IV, was designed specifically for PC-related embedded control applications - emphasizing integrated keyboard interface, flexible flash programming, and multi-protocol timing peripherals to reduce external component count in space-constrained peripherals.
FAQ
What is the operating voltage range for DF2148ATE20IV?
The DF2148ATE20IV operates with a core supply (VCC) of 2.7–3.6 V and a separate I/O supply (VCCB) of 3.0–5.5 V. This dual-supply architecture enables direct interfacing with both 3.3 V and 5 V peripherals without external level shifters. The DF2148ATE20IV datasheet specifies these ranges in absolute maximum ratings and DC characteristics tables, and operation outside them may cause functional failure or permanent damage.
Does DF2148ATE20IV support in-system programming of its flash memory?
Yes, DF2148ATE20IV supports in-system programming via its F-ZTAT™ flash architecture. Flash memory can be reprogrammed while mounted on the target board using standard ISP protocols over SCI or dedicated programmer interfaces. The DF2148ATE20IV hardware manual details flash control register access, erase block management, and timing requirements for reliable field updates without removing the device.
How many I²C bus interfaces does DF2148ATE20IV include?
DF2148ATE20IV includes two I²C bus interfaces (IIC0 and IIC1), available as an option per Renesas product configuration. Both support standard-mode (100 kHz) and fast-mode (400 kHz) operation, with dedicated SDA/SCL pins (e.g., pins 67/70 for IIC0). The DF2148ATE20IV must be ordered with I²C option enabled (indicated by 'W' suffix in part numbering convention) to activate these modules.
What is the purpose of the DTC (Data Transfer Controller) in DF2148ATE20IV?
The DTC in DF2148ATE20IV performs autonomous data transfers between memory and peripherals (e.g., ADC → RAM, RAM → SCI) without CPU involvement. It reduces interrupt load and improves real-time determinism - critical for DF2148ATE20IV applications like continuous sensor logging or high-speed serial streaming. Configuration is done via DTC registers, and triggers can be sourced from timers, A/D completion, or SCI events.
Is DF2148ATE20IV pin-compatible with other H8S/2148 Group variants?
DF2148ATE20IV shares the same 100-pin TFP-100B package and pinout with other H8S/2148 Group members like HD64F2148AV and HD6432148SW, provided they use identical package codes. However, functional differences exist - e.g., I²C option requires specific ordering codes, and VCCB drive capability is not present in mask ROM versions. Always verify peripheral enablement and voltage ratings before substitution.
DF2148ATE20IV Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 100-TQFP
- Series:
- H8® H8S/2100
- Packaging:
- Tray
- Product Status:
- Last Time Buy
- Programmable:
- 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:
DF2148ATE20IV FAQ
1.How can I place an order for DF2148ATE20IV through Aetrix?
Please submit a Request for Quotation (RFQ) for DF2148ATE20IV 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 DF2148ATE20IV reliable?
The price and inventory of DF2148ATE20IV are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DF2148ATE20IV is usually 5 days.
3.What payment methods are accepted for DF2148ATE20IV?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DF2148ATE20IV transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DF2148ATE20IV?
DF2148ATE20IV orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DF2148ATE20IV 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 DF2148ATE20IV?
For technical support, including DF2148ATE20IV datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DF2148ATE20IV requirements.
6.How does Aetrix verify that DF2148ATE20IV is sourced from the original manufacturer or authorized distributors?
All DF2148ATE20IV 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 DF2148ATE20IV meets industry standards.
7.What is the process for return or replacement of DF2148ATE20IV?
All DF2148ATE20IV units undergo pre-shipment inspection (PSI). If there is an issue with DF2148ATE20IV, 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 DF2148ATE20IV part is unused and in its original packaging.
Return procedure for DF2148ATE20IV:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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