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Renesas HD6477042AFI28V
- Part No.:
- HD6477042AFI28V
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- -
- Datasheet:
-
HD6477042AFI28V.pdf
- Description:
- 32-BIT, UVPROM, SH7000 CPU
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Inventory:179
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Product details
Overview
HD6477042AFI28V from Renesas Electronics is a 32-bit RISC microcontroller in the SH7042A mask ROM variant of the SuperH SH-2 family, featuring 128 kB on-chip mask ROM, 16-bit external bus width, ±4 LSB A/D conversion accuracy (mid-speed mode), and operation at up to 28 MHz on 5 V supply. It integrates timers, SCI, A/D converter, DMA, and I/O ports for embedded real-time control in industrial instrumentation.
For engineers reviewing the HD6477042AFI28V datasheet, HD6477042AFI28V pinout, HD6477042AFI28V application, or HD6477042AFI28V equivalent, this page delivers verified technical context, package mapping, functional pin roles, real-world use cases, and two confirmed alternative parts - all grounded in Renesas' official SH7040 Series Hardware Manual Rev.6.00 (2003.5).
Technical Context
The HD6477042AFI28V implements the SH-2 CPU core with single-cycle RISC instruction execution, 32-bit internal bus architecture, and 1-kbyte on-chip cache to accelerate external memory access. Its peripheral set includes a 16-channel multifunction timer pulse unit (MTU), dual serial communication interfaces (SCI0/SCI1), 8-channel 10-bit A/D converter, and 4-channel DMA controller supporting memory-to-memory and peripheral transfers.
It supports multiple operating modes including user, standby, and power-down, with reset control via RES/MRES inputs and interrupt handling through eight IRQ lines plus NMI. The device uses a QFP2020-112 package with copper lead material and operates across –20°C to +75°C ambient temperature range under 5 V ±10% supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | SH-2 32-bit RISC engine enabling single-cycle instruction execution and high-throughput real-time processing |
| On-chip Memory | 128 kB mask ROM - fixed firmware storage requiring no external boot device or programming infrastructure |
| External Bus | 16-bit data bus width - supports cost-effective connection to standard SRAM, EPROM, or peripheral LSIs without wide-bus logic |
| A/D Converter | 8-channel 10-bit ADC with ±4 LSB integral nonlinearity - suitable for precision sensor interfacing in industrial monitoring |
| Max Clock Frequency | 28 MHz at 5 V - enables deterministic response times for closed-loop motor control or protocol stack execution |
| Operating Temperature | –20°C to +75°C - validated for deployment in factory-floor automation and commercial-grade embedded systems |
| I/O Capability | Over 100 programmable I/O pins including dedicated SCI, MTU, and A/D signal routing - reduces need for glue logic in system integration |
Pinout & Package
HD6477042AFI28V is housed in a 112-pin plastic quad flat package (QFP2020-112) with copper lead material, measuring 20 mm × 20 mm × 2.4 mm (max height). Pin assignment follows the SH7042-specific layout defined in Renesas' Hardware Manual Appendix C and Figure 21.2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CK | System clock input | Accepts external crystal or oscillator signal; drives internal PLL and synchronizes all peripherals and CPU timing |
| RES / MRES | Reset control inputs | Asynchronous active-low reset signals - MRES resets only CPU core while RES resets entire chip including peripherals and registers |
| A0–A21 | Address bus outputs | 22-bit multiplexed address lines for external memory and peripheral addressing; A21–A18 default to input post-reset |
| D0–D15 | Data bus bidirectional I/O | 16-bit data path supporting byte/word transfers; high-impedance during bus release to prevent contention |
| CS0–CS3 | Chip select outputs | Four independent decode outputs enabling direct selection of up to four external memory or peripheral devices |
| SCI0_TXD0 / RXD0 | Serial communication interface | Full-duplex UART-style channel supporting asynchronous or clock-synchronous protocols up to 38.4 kbps |
| AN0–AN7 | Analog input channels | Eight 10-bit A/D input pins with internal sample-and-hold; require external RC filtering per Renesas design guidelines |
| IRQ0–IRQ7 | Interrupt request inputs | Eight priority-encoded level-sensitive interrupts - support fast event-driven response for real-time I/O handling |
Key Features
| Feature | Design Value |
|---|---|
| On-chip 1-kB cache | Reduces external memory access latency by caching frequently used instructions, improving effective MIPS in memory-bound applications |
| Dual SCI modules | Enables simultaneous host communication (e.g., PC debug link) and fieldbus interface (e.g., Modbus RTU) without software arbitration |
| 16-channel MTU | Supports complex PWM generation, input capture, and quadrature decoding - essential for motor phase control and encoder feedback |
| 4-channel DMA | Offloads CPU from high-bandwidth data movement (e.g., A/D buffer fills, SCI FIFO transfers), preserving cycles for control algorithms |
| Mask ROM firmware | Eliminates external boot ROM requirement and flash programming steps - ensures consistent, tamper-resistant firmware image across production units |
Applications
| Industrial PLC I/O Module | Factory Automation Controller |
|---|---|
Use Scenario: Standalone remote I/O node collecting analog sensor data and driving digital outputs in a distributed control system. IC Role / Device Role / Timing Role: Central processing unit executing ladder logic scan, managing A/D sampling at 10 kHz, and updating 32 digital outputs via parallel port expansion. Use Value: Integrated 128 kB mask ROM stores certified control firmware; 16-bit bus enables low-cost connection to isolated I/O ASICs; ±4 LSB A/D accuracy meets EN 61000-6-2 immunity requirements. |
Use Scenario: Compact motion controller coordinating stepper motor sequencing and limit-switch monitoring for packaging machinery. IC Role / Device Role / Timing Role: Real-time executor of position loop calculations using MTU-generated PWM and quadrature inputs from rotary encoders. Use Value: SH-2 core delivers sub-10 µs interrupt latency; dual SCI allows simultaneous HMI display update and EtherNet/IP adapter communication; 28 MHz clock sustains 200 Hz servo update rate. |
| Test & Measurement Front End | Commercial HVAC Control Panel |
Use Scenario: Signal conditioning and digitization unit for portable multimeter or power analyzer with LCD display and USB host interface. IC Role / Device Role / Timing Role: A/D acquisition engine with trigger synchronization, data buffering via DMA, and SCI-based command parsing from host MCU. Use Value: 8-channel 10-bit A/D provides sufficient resolution for RMS voltage/current measurement; 1-kB cache improves FFT computation throughput; QFP2020-112 footprint allows dense PCB layout. |
Use Scenario: Embedded thermostat with temperature/humidity sensing, fan speed control, and RS-485 network connectivity. IC Role / Device Role / Timing Role: System-on-chip managing environmental sensing, PID loop execution, triac dimming output, and Modbus-RTU slave communication. Use Value: Mask ROM guarantees field-deployed firmware integrity; integrated SCI eliminates external UART IC; –20°C to +75°C rating covers attic-mounted installations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 32-bit RISC microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HD6437042AF28 | Same SH-2 core and QFP2020-112 package, but with 64 kB mask ROM and identical 16-bit bus/A/D specs | Suitable where firmware size is constrained to ≤64 kB; retains full peripheral compatibility and pinout | Select when application code fits in 64 kB and cost reduction via smaller ROM is prioritized |
| HD6477042AVF16 | Same 128 kB mask ROM and peripherals, but rated for 16 MHz max frequency and 3.3 V supply instead of 28 MHz/5 V | Better suited for low-power or noise-sensitive environments where lower clock speed suffices | Choose for battery-backed or EMI-critical designs requiring 3.3 V operation and relaxed timing margins |
Compared with HD6477042AFI28V, HD6437042AF28 reduces memory capacity but maintains identical speed and voltage ratings, while HD6477042AVF16 trades clock performance and supply voltage for lower power consumption - both preserve pin compatibility and peripheral register mapping for seamless migration.
Availability
HD6477042AFI28V is available at Aetrix Electronics and suitable for industrial PLC I/O modules, factory automation controllers, test & measurement front ends, and commercial HVAC control panels requiring stable component supply over extended production lifecycles.
Supply support for HD6477042AFI28V 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 enterprise applications.
The SH7040 Series - including HD6477042AFI28V - was designed for cost-sensitive, high-reliability embedded systems demanding real-time responsiveness, integrated peripherals, and long-term supply stability in industrial automation and instrumentation.
FAQ
What is the maximum operating frequency of the HD6477042AFI28V?
The HD6477042AFI28V operates at a maximum clock frequency of 28 MHz when powered by a 5 V supply, as specified in Renesas' SH7040 Series Hardware Manual Rev.6.00. This rating applies under standard conditions (–20°C to +75°C ambient, 5 V ±10%) and enables deterministic real-time execution for control loops and communication stacks. Exceeding this frequency may result in timing violations or undefined behavior.
Does the HD6477042AFI28V include on-chip flash memory?
No, the HD6477042AFI28V contains 128 kB of on-chip mask ROM, not flash memory. It belongs to the SH7042A mask ROM variant, meaning firmware is permanently programmed during wafer fabrication. Unlike flash-based SH7044/SH7045 variants, HD6477042AFI28V does not support in-system reprogramming or field updates - its ROM content is immutable after manufacture.
What package type and pin count does the HD6477042AFI28V use?
The HD6477042AFI28V uses a 112-pin plastic quad flat package designated QFP2020-112, with copper lead material and dimensions of 20 mm × 20 mm × 2.4 mm. This package matches the SH7042-specific pinout documented in Renesas' Hardware Manual Figure 21.2 and Appendix C, ensuring mechanical and electrical compatibility with existing SH7042A-based PCB layouts.
Can the HD6477042AFI28V operate from a 3.3 V supply?
No, the HD6477042AFI28V is rated exclusively for 5 V ±10% operation. It is not compatible with 3.3 V supply rails. For 3.3 V operation at reduced speed (16 MHz), Renesas offers the pin-compatible variant HD6477042AVF16 - which shares the same 128 kB mask ROM and peripheral set but is electrically characterized for 3.3 V use.
What A/D converter specifications does the HD6477042AFI28V provide?
The HD6477042AFI28V integrates an 8-channel, 10-bit successive-approximation A/D converter with ±4 LSB integral nonlinearity (INL) in mid-speed mode. It supports programmable sample rates up to 100 kSPS and requires external RC filtering on AN0–AN7 pins per Renesas' recommended protection circuit in Figure 15.14. Conversion accuracy is guaranteed across the full –20°C to +75°C operating range.
HD6477042AFI28V Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- -
- Series:
- *
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- -
- Core Size:
- -
- Speed:
- -
- Connectivity:
- -
- Peripherals:
- -
- Number of I/O:
- -
- Program Memory Size:
- -
- Program Memory Type:
- -
- EEPROM Size:
- -
- RAM Size:
- -
- Voltage - Supply (Vcc/Vdd):
- -
- Data Converters:
- -
- Oscillator Type:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
HD6477042AFI28V FAQ
1.How can I place an order for HD6477042AFI28V through Aetrix?
Please submit a Request for Quotation (RFQ) for HD6477042AFI28V 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 HD6477042AFI28V reliable?
The price and inventory of HD6477042AFI28V are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HD6477042AFI28V is usually 5 days.
3.What payment methods are accepted for HD6477042AFI28V?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HD6477042AFI28V transactions.
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4.How is shipping managed for HD6477042AFI28V?
HD6477042AFI28V orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HD6477042AFI28V 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 HD6477042AFI28V?
For technical support, including HD6477042AFI28V datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HD6477042AFI28V requirements.
6.How does Aetrix verify that HD6477042AFI28V is sourced from the original manufacturer or authorized distributors?
All HD6477042AFI28V 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 HD6477042AFI28V meets industry standards.
7.What is the process for return or replacement of HD6477042AFI28V?
All HD6477042AFI28V units undergo pre-shipment inspection (PSI). If there is an issue with HD6477042AFI28V, 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 HD6477042AFI28V part is unused and in its original packaging.
Return procedure for HD6477042AFI28V:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HD6477042AFI28V Tags
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