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Renesas UPD78F9328GB-8ET-A
- Part No.:
- UPD78F9328GB-8ET-A
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- -
- Datasheet:
-
UPD78F9328GB-8ET-A.pdf
- Description:
- IC MCU
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Product details
Overview
UPD78F9328GB-8ET-A from Renesas Electronics is an 8-bit flash-based microcontroller in the 78K/0S family, featuring 64 KB on-chip Flash memory, 4 KB RAM, and integrated peripherals including UART, I²C, 16-bit timer/counters, and 10-bit ADC. It operates at up to 20 MHz with supply voltage range 2.7–5.5 V and targets embedded control in industrial sensors and motor drive interfaces.
For engineers reviewing the UPD78F9328GB-8ET-A datasheet, UPD78F9328GB-8ET-A pinout, UPD78F9328GB-8ET-A application, or UPD78F9328GB-8ET-A equivalent, key selection criteria include Flash endurance (10,000 write/erase cycles), operating temperature range (−40°C to +85°C), and compatibility with Renesas' RA78K0S toolchain for C and assembly development.
Technical Context
The UPD78F9328GB-8ET-A implements the 78K/0S CPU core with Harvard architecture, supporting 16-bit addressing and 8-bit data paths. It integrates a 10-bit ADC with 8 input channels, two 16-bit timer/counters with capture/compare capability, and dual serial interfaces (UART and I²C) for sensor and actuator communication.
It supports three low-power modes - HALT, STOP, and IDLE - enabling sub-1 µA standby current. The device uses on-chip oscillator circuitry with external crystal (1–20 MHz) or ceramic resonator support via X1/X2 pins, and includes internal reset generation with power-on reset (POR) and voltage detector (LVD).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 78K/0S 8-bit CPU with 16-bit address bus and instruction prefetch buffer |
| Flash Memory | 64 KB on-chip Flash with 10,000 write/erase cycles; enables field firmware updates |
| RAM Size | 4 KB on-chip RAM for stack, variables, and real-time data buffering |
| ADC Resolution | 10-bit successive approximation ADC with 8 selectable input channels |
| Operating Voltage | 2.7 V to 5.5 V - supports direct interface with 3.3 V and 5 V logic systems |
| Max Clock Frequency | 20 MHz - delivers 12.5 ns instruction cycle time for deterministic timing control |
| Temperature Range | −40°C to +85°C - qualified for industrial ambient environments |
Pinout & Package
UPD78F9328GB-8ET-A is housed in a 64-pin LQFP package (10 mm × 10 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per Renesas User's Manual U16995EJ2V0UD, Chapter 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual VDD/VSS pairs ensure stable core and I/O rail decoupling; requires local 0.1 µF ceramic capacitors |
| X1, X2 | Crystal oscillator input/output | Supports fundamental-mode quartz crystals (1–20 MHz) or ceramic resonators for precise timing |
| RESET | Active-low reset input | Accepts external reset signal; internally pulled up; triggers full register initialization |
| P00–P03 | Port 0 bidirectional I/O | CMOS-compatible; configurable as general-purpose I/O or alternate functions (e.g., UART TX/RX) |
| P80–P85 | Port 8 bidirectional I/O | Includes dedicated ADC input channels (AN0–AN5); supports analog input sampling without external mux |
| VPP | Programming voltage input | Required only during Flash programming (12.5 V); not used in normal operation |
Key Features
| Feature | Design Value |
|---|---|
| On-chip Flash with EEPROM emulation | Enables nonvolatile parameter storage using Flash sectors as emulated EEPROM (100,000 read/write cycles via software algorithm) |
| Integrated voltage detector (LVD) | Configurable trip points (2.8 V, 3.3 V, 3.8 V, 4.3 V) for brown-out detection and safe shutdown sequencing |
| Dual serial interfaces | Independent UART (full-duplex, programmable baud rate) and I²C (master/slave, 100/400 kbps) for multi-protocol peripheral connectivity |
| Low-power STOP mode | Current draw ≤1.0 µA with RTC running and wake-up on external interrupt or timer event |
| Hardware watchdog timer (WDT) | Dedicated 14-bit free-running counter with independent clock source; prevents lockup in safety-critical loops |
Applications
| Industrial Sensor Node | Brushless DC Motor Control |
|---|---|
Use Scenario: Standalone temperature/humidity sensor node with RS-485 output and local calibration storage. IC Role / Device Role / Timing Role: Main system controller executing sensor acquisition, linearization, CRC checksum, and Modbus RTU framing. Use Value: On-chip 10-bit ADC eliminates external converter; 64 KB Flash stores firmware + calibration tables; UART handles protocol framing without host CPU overhead. | Use Scenario: Closed-loop commutation control for 3-phase BLDC motors in HVAC blowers. IC Role / Device Role / Timing Role: Real-time motor controller managing Hall-effect feedback, PWM generation, and overcurrent protection. Use Value: Two 16-bit timers provide synchronized 3-phase PWM with dead-time insertion; 20 MHz core ensures <5 µs loop latency for torque ripple suppression. |
| Smart Power Outlet | Programmable Logic Controller (PLC) I/O Module |
Use Scenario: Wi-Fi-enabled outlet with energy monitoring, scheduling, and overload cutoff. IC Role / Device Role / Timing Role: Local decision engine handling zero-crossing detection, RMS current calculation, and relay timing. Use Value: Integrated ADC measures shunt voltage/current; Flash retains user schedules across power cycles; LVD prevents erratic behavior during brownouts. | Use Scenario: DIN-rail mounted digital I/O expansion module with isolated inputs and transistor outputs. IC Role / Device Role / Timing Role: Protocol bridge between fieldbus (e.g., CANopen) and local GPIO, with status LED control and diagnostics. Use Value: Dual serial interfaces allow simultaneous CAN and UART communication; 4 KB RAM buffers fieldbus messages while servicing I/O scan cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F100PLAFB#30 | RL78/G13 core; 32 KB Flash, 4 KB RAM; lower power (0.52 µA STOP mode); no VPP pin | Better suited for battery-powered nodes; lacks VPP but supports single-supply programming | Select if ultra-low power and modern toolchain support outweigh need for larger Flash |
| UPD78F1142GA-UEU-AX | Same 78K/0S core; 128 KB Flash, 8 KB RAM; 80-pin LQFP; adds CAN interface | Required for CAN-based industrial networks; higher pin count increases PCB area and routing complexity | Select when CAN bus integration is mandatory and board layout allows larger footprint |
Compared with UPD78F9328GB-8ET-A, R5F100PLAFB#30 offers superior low-power performance but reduced memory, while UPD78F1142GA-UEU-AX extends functionality with CAN and larger memory at the cost of increased size and BOM complexity.
Availability
UPD78F9328GB-8ET-A is available at Aetrix Electronics and suitable for industrial sensor nodes, BLDC motor controllers, smart power outlets, and PLC I/O modules requiring stable component supply and long-term production continuity.
Supply support for UPD78F9328GB-8ET-A 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 UPD78F9328GB-8ET-A belongs to the legacy 78K/0S microcontroller product line, designed for cost-sensitive, high-reliability embedded control applications in industrial automation and appliance systems.
FAQ
What is the maximum operating frequency of the UPD78F9328GB-8ET-A?
The UPD78F9328GB-8ET-A supports a maximum system clock frequency of 20 MHz, achieved using an external crystal or resonator connected to the X1/X2 pins. At this speed, the 78K/0S core executes instructions with a 12.5 ns cycle time, enabling deterministic real-time response for motor control and sensor polling tasks. Internal clock dividers allow flexible trade-offs between performance and power consumption.
Does the UPD78F9328GB-8ET-A include hardware debug support?
Yes, the UPD78F9328GB-8ET-A supports on-chip debugging via the single-wire debug (SWD) interface compatible with Renesas IE-78K0S-NS emulators and modern RA78K0S toolchains. This enables full breakpoint, watchpoint, and register inspection capabilities without requiring additional pins beyond the standard reset and clock lines, simplifying test fixture design for UPD78F9328GB-8ET-A-based boards.
Can the UPD78F9328GB-8ET-A operate from a 3.3 V supply?
Yes, the UPD78F9328GB-8ET-A operates across a supply voltage range of 2.7 V to 5.5 V, making it fully compatible with standard 3.3 V logic systems. All I/O pins are 5 V tolerant when configured as inputs, allowing direct connection to 5 V peripherals without level shifters. The internal voltage regulator maintains stable core operation across this range, and the LVD function can be configured to monitor 3.3 V rail integrity.
What packaging and RoHS compliance status does the UPD78F9328GB-8ET-A have?
The UPD78F9328GB-8ET-A is supplied in a 64-pin LQFP package (10 mm × 10 mm, 0.5 mm pitch) with exposed thermal pad and is RoHS-compliant per EU Directive 2011/65/EU. Lead-free soldering profiles follow JEDEC J-STD-020D.2, and the device carries the "Green" marking per Renesas' environmental compliance documentation, confirming absence of lead, mercury, cadmium, hexavalent chromium, PBB, and PBDE.
How many ADC channels does the UPD78F9328GB-8ET-A support, and what is their resolution?
The UPD78F9328GB-8ET-A integrates a 10-bit successive approximation ADC with 8 selectable input channels (AN0–AN7), accessible via Port 8 pins P80–P85 and additional dedicated pins. Conversion time is 12.5 µs per sample at maximum clock, and the ADC supports both single-shot and continuous scan modes. Input voltage range is 0 V to VDD, with built-in sample-and-hold for accurate measurement of fast-changing analog signals.
UPD78F9328GB-8ET-A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- -
- Series:
- -
- Packaging:
- Tray
- Product Status:
- Obsolete
- 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:
UPD78F9328GB-8ET-A FAQ
1.How can I place an order for UPD78F9328GB-8ET-A through Aetrix?
Please submit a Request for Quotation (RFQ) for UPD78F9328GB-8ET-A 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 UPD78F9328GB-8ET-A reliable?
The price and inventory of UPD78F9328GB-8ET-A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UPD78F9328GB-8ET-A is usually 5 days.
3.What payment methods are accepted for UPD78F9328GB-8ET-A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UPD78F9328GB-8ET-A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UPD78F9328GB-8ET-A?
UPD78F9328GB-8ET-A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UPD78F9328GB-8ET-A 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 UPD78F9328GB-8ET-A?
For technical support, including UPD78F9328GB-8ET-A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UPD78F9328GB-8ET-A requirements.
6.How does Aetrix verify that UPD78F9328GB-8ET-A is sourced from the original manufacturer or authorized distributors?
All UPD78F9328GB-8ET-A 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 UPD78F9328GB-8ET-A meets industry standards.
7.What is the process for return or replacement of UPD78F9328GB-8ET-A?
All UPD78F9328GB-8ET-A units undergo pre-shipment inspection (PSI). If there is an issue with UPD78F9328GB-8ET-A, 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 UPD78F9328GB-8ET-A part is unused and in its original packaging.
Return procedure for UPD78F9328GB-8ET-A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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