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Renesas HD6477042AFJ28
- Part No.:
- HD6477042AFJ28
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- -
- Datasheet:
-
HD6477042AFJ28.pdf
- Description:
- 32-BIT, UVPROM, SH7000 CPU
- Quantity:
- Payment:
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Inventory:3,614
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Product details
Overview
HD6477042AFJ28 from Renesas is a 32-bit RISC microcontroller based on the SH-2 CPU core, featuring 128 kB on-chip mask ROM, 16-bit external bus width, ±4 LSB A/D conversion accuracy (mid-speed mode), and operation at 28 MHz/5 V. It integrates timers, SCI, A/D converter, interrupt controller, and I/O ports for embedded real-time control in industrial automation systems.
For engineers reviewing the HD6477042AFJ28 datasheet, HD6477042AFJ28 pinout, HD6477042AFJ28 application, or HD6477042AFJ28 equivalent, key selection criteria include its QFP2020-112 package, SH-2 instruction set compatibility, 28 MHz timing budget, 5 V supply requirement, and mask-ROM-based boot reliability for fixed-function control deployments.
Technical Context
The HD6477042AFJ28 implements the SuperH RISC engine SH-2 core with single-cycle instruction execution for high throughput in deterministic real-time tasks. Its 32-bit internal bus architecture supports efficient data movement between on-chip peripherals and external memory.
It includes a 1-kbyte on-chip cache to accelerate external memory access, integrated multifunction timer pulse unit (MTU) with PWM and capture/compare capability, and dual serial communication interfaces (SCI0/SCI1) supporting asynchronous and clocked synchronous modes with programmable bit rates up to 38.4 kbps.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | SH-2 32-bit RISC engine enabling single-cycle instruction execution for deterministic real-time control loops. |
| On-chip Memory | 128 kB mask ROM - fixed, factory-programmed firmware storage with no field reprogrammability. |
| External Bus | 16-bit data bus width - supports cost-effective connection to standard SRAM, EPROM, or peripheral ASICs. |
| A/D Converter | 8-channel, 10-bit ADC with ±4 LSB integral nonlinearity - suitable for motor current sensing and analog sensor interfacing. |
| Operating Frequency | 28 MHz maximum - defines real-time response latency and peripheral timing margins in control applications. |
| Supply Voltage | 5 V nominal - requires standard industrial power rail; not compatible with 3.3 V logic domains without level translation. |
| Package | QFP2020-112 - 112-pin quad flat package with 0.65 mm pitch, suitable for automated SMT assembly and thermal management in enclosed enclosures. |
Pinout & Package
HD6477042AFJ28 is housed in a QFP2020-112 package (20 mm × 20 mm, 0.65 mm pitch), with copper lead material per manufacturer specification. Pin functions are multiplexed across address/data bus, peripheral I/O, and system control signals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CK | System Clock Input | Accepts external crystal or clock source; drives all synchronous logic including CPU core and peripherals. |
| RES | Reset Input (Active Low) | Asynchronous reset signal; initiates hardware initialization sequence and forces all registers to known state. |
| A0–A21 | Address Bus Outputs | 22-bit address bus supporting up to 4 MB external memory space; A18–A21 become inputs after power-on reset. |
| D0–D15 | Data Bus I/O (16-bit) | Bi-directional 16-bit data path for memory and peripheral transfers; high-impedance during bus release. |
| CS0, CS1 | Chip Select Outputs | Active-low enables for primary external memory regions; configurable timing via bus control registers. |
| TXD0, RXD0 | SCI0 Serial Interface | Asynchronous UART interface supporting RS-232/RS-485 transceivers; programmable baud rate up to 38.4 kbps. |
| AN0–AN7 | Analog Input Channels | Eight 10-bit A/D input pins with shared reference (AVcc/AVss); require external RC filtering per Figure 15.14. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip Cache | 1-kbyte instruction cache improves effective CPU performance during external memory fetches, reducing wait states. |
| Multifunction Timer Unit (MTU) | Four independent timer channels with PWM output, input capture, and compare match - enables motor phase control and encoder counting. |
| Serial Communication Interface (SCI) | Dual SCI modules support full-duplex asynchronous and clocked synchronous protocols - simplifies host-to-peripheral command links. |
| Interrupt Controller | 8-level priority vectored interrupt system with IRQ0–IRQ7 and NMI - ensures low-latency response to critical events like fault detection. |
| I/O Port Flexibility | Five general-purpose I/O ports (PA–PE) with pin function controller (PFC) - allows runtime remapping of peripheral signals to alternate pins. |
Applications
| Industrial PLC I/O Module | Motor Drive Control Board |
|---|---|
|
Use Scenario: Real-time monitoring and actuation of discrete sensors and solenoids in factory-floor programmable logic controllers. IC Role / Device Role / Timing Role: Central execution unit running ladder logic interpreter with deterministic scan cycle timing under 10 ms. Use Value: 28 MHz SH-2 core delivers sufficient MIPS to handle 128 I/O points and serial diagnostics while maintaining sub-millisecond I/O update latency. |
Use Scenario: Closed-loop speed and torque regulation in 3-phase inverter drives for HVAC and pump systems. IC Role / Device Role / Timing Role: Real-time PWM generator and current-sensing ADC coordinator synchronized to motor electrical angle. Use Value: Integrated MTU with complementary PWM mode and 10-bit A/D enables precise gate timing and analog feedback sampling within one chip. |
| Embedded HMI Controller | Legacy Equipment Retrofit Module |
|
Use Scenario: Local display, keypad, and communication interface for operator panels in medical and test equipment. IC Role / Device Role / Timing Role: Host processor managing LCD refresh, button debouncing, and RS-232/RS-485 protocol translation. Use Value: On-chip 128 kB mask ROM stores firmware and font tables; dual SCI ports allow simultaneous panel and host connectivity. |
Use Scenario: Drop-in replacement for aging 8/16-bit microcontrollers in legacy industrial instruments with minimal PCB modification. IC Role / Device Role / Timing Role: Pin-compatible upgrade path preserving existing 16-bit bus interface and 5 V power domain. Use Value: QFP2020-112 footprint matches prior-generation controllers; 28 MHz performance enables feature expansion without board redesign. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HD6437042AF28 | Same SH-2 core, identical 128 kB mask ROM and QFP2020-112 package, but rated for 28 MHz/5 V without ZTAT qualification. | Lacks ZTAT (Zero-Temperature-Accelerated-Test) screening - intended for commercial-grade rather than extended-temperature industrial use. | Select HD6437042AF28 when operating ambient temperature remains within 0°C to 70°C and ZTAT reliability certification is unnecessary. |
| HD6477042VF16 | Same SH-2 core and 128 kB mask ROM, but operates at 16 MHz/3.3 V and uses QFP2020-112 package. | Lower voltage and frequency reduce power consumption and EMI, but limit real-time processing bandwidth and require 3.3 V supply design. | Choose HD6477042VF16 for battery-powered or thermally constrained applications where 16 MHz timing suffices and 3.3 V infrastructure exists. |
Compared with HD6437042AF28, HD6477042AFJ28 provides ZTAT-qualified reliability for –20°C to 75°C operation; compared with HD6477042VF16, it delivers higher deterministic throughput at 28 MHz but requires 5 V supply and dissipates more heat.
Availability
HD6477042AFJ28 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, motor drive control boards, embedded HMI controllers, and legacy equipment retrofit programs requiring stable component supply over multi-year production cycles.
Supply support for HD6477042AFJ28 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 industrial, automotive, and infrastructure markets.
The SH7040 Series was designed as a high-performance, cost-optimized 32-bit RISC MCU family for deterministic real-time control in industrial automation, motion control, and human-machine interface applications.
FAQ
What is the operating temperature range for the HD6477042AFJ28?
The HD6477042AFJ28 is qualified for operation from –20°C to +75°C, meeting industrial environmental requirements. This range is confirmed in the "Notes on the SH7040 Series Specifications" section of the hardware manual, where HD6477042AFJ28 is explicitly listed under the ZTAT version with that temperature grade. The device undergoes Zero-Temperature-Accelerated-Test screening to ensure reliability across this span.
Does the HD6477042AFJ28 support in-system programming?
No, the HD6477042AFJ28 does not support in-system programming. It contains 128 kB of mask ROM, which is factory-programmed and permanently fixed. Unlike flash-based variants (e.g., HD64F7044F28), the HD6477042AFJ28 lacks onboard flash memory, programming circuitry, or bootloader capability - firmware updates require physical device replacement.
What peripheral interfaces are integrated into the HD6477042AFJ28?
The HD6477042AFJ28 integrates a dual Serial Communication Interface (SCI0/SCI1), an 8-channel 10-bit A/D converter, a multifunction timer pulse unit (MTU) with four independent channels, an 8-level vectored interrupt controller, and five general-purpose I/O ports (PA–PE). These peripherals are documented in the "Preface" and "Section 1.1.1 SH7040 Series Features" of the hardware manual.
Is the HD6477042AFJ28 pin-compatible with other SH7042 variants?
Yes, the HD6477042AFJ28 shares the QFP2020-112 package and identical pinout with other SH7042-family members in the same pin-count variant, including HD6437042AF28 and HD6477042VF16. Pin function definitions and electrical characteristics during reset, standby, and active modes are consistent across these variants per Appendix C of the hardware manual.
What is the purpose of the 1-kbyte on-chip cache in the HD6477042AFJ28?
The 1-kbyte on-chip cache in the HD6477042AFJ28 buffers frequently accessed instructions during external memory fetches, reducing wait-state penalties and improving effective CPU throughput. As stated in the "Preface", this cache specifically enhances performance when executing code from slower external ROM or RAM, making it valuable in cost-sensitive designs using standard memory components.
HD6477042AFJ28 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:
HD6477042AFJ28 FAQ
1.How can I place an order for HD6477042AFJ28 through Aetrix?
Please submit a Request for Quotation (RFQ) for HD6477042AFJ28 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
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The price and inventory of HD6477042AFJ28 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HD6477042AFJ28 is usually 5 days.
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HD6477042AFJ28 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HD6477042AFJ28 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 HD6477042AFJ28?
For technical support, including HD6477042AFJ28 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HD6477042AFJ28 requirements.
6.How does Aetrix verify that HD6477042AFJ28 is sourced from the original manufacturer or authorized distributors?
All HD6477042AFJ28 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 HD6477042AFJ28 meets industry standards.
7.What is the process for return or replacement of HD6477042AFJ28?
All HD6477042AFJ28 units undergo pre-shipment inspection (PSI). If there is an issue with HD6477042AFJ28, 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 HD6477042AFJ28 part is unused and in its original packaging.
Return procedure for HD6477042AFJ28:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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