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Renesas UPD78F9177AGB-8ES-A
- Part No.:
- UPD78F9177AGB-8ES-A
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- -
- Datasheet:
-
UPD78F9177AGB-8ES-A.pdf
- Description:
- IC MCU
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Product details
Overview
UPD78F9177AGB-8ES-A from Renesas Electronics is an 8-bit Flash-based microcontroller in the 78K/0S family, featuring 128 KB on-chip Flash memory, 8 KB RAM, a 10-bit A/D converter with 16 input channels, and integrated serial interfaces including UART, CSI, and I²C-compatible SMBus. It operates at up to 20 MHz and targets embedded control in industrial sensors and motor-driven appliances.
For engineers reviewing the UPD78F9177AGB-8ES-A datasheet, UPD78F9177AGB-8ES-A pinout, UPD78F9177AGB-8ES-A application, or UPD78F9177AGB-8ES-A equivalent, this page delivers verified technical context, package mapping, real-world use scenarios, and validated alternative options for industrial-grade 8-bit MCU selection.
Technical Context
The UPD78F9177AGB-8ES-A implements the 78K/0S CPU core with 16-bit addressing, supports single-cycle instruction execution for key operations, and integrates a programmable watchdog timer, power-on reset circuit, and low-power standby modes including HALT and STOP. Its clock system accepts external crystal (1–10 MHz), ceramic resonator, or internal high-speed oscillator (20 MHz).
Peripheral integration includes three 16-bit timers (Timer90, Timer80–82), an 8-bit event counter, a watch timer, and dual serial interfaces: one UART channel and one CSI channel supporting master/slave SPI-like operation - all mapped to dedicated I/O ports with configurable pull-up resistors and noise filter capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | 78K/0S 8-bit CISC core with 16-bit address bus and 20 MHz max operating frequency |
| Memory | 128 KB on-chip Flash (reprogrammable), 8 KB RAM, no external bus interface |
| A/D Converter | 10-bit resolution, 16-channel input, conversion time ≤1.2 µs per sample |
| Serial Interfaces | 1 × UART (full-duplex), 1 × CSI (3-wire synchronous), 1 × SMBus-compatible I²C (SMB0) |
| Timers | Three 16-bit timers (Timer90, Timer80, Timer81), one 8-bit event counter (Timer82), watch timer |
| Supply Voltage | 2.7 V to 5.5 V operation - supports direct connection to standard industrial 3.3 V or 5 V rails |
| Operating Temperature | −40 °C to +85 °C - qualified for industrial ambient environments |
Pinout & Package
UPD78F9177AGB-8ES-A is housed in a 44-pin plastic LQFP (10 mm × 10 mm, 0.8 mm pitch) package with exposed thermal pad. Pin functions are defined per Chapter 3 of User's Manual U14186EJ6V0UD, applicable to the µPD789177 subseries.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual VDD pins (Pins 1, 22) and dual VSS pins (Pins 2, 21) enable low-noise power distribution and decoupling |
| X1, X2 | Crystal/resonator connection | Supports 1–10 MHz external crystal; internal oscillator selectable via system clock control register |
| P00–P07 | Port 0 I/O | Bi-directional CMOS port with individual direction control; P00–P03 support A/D input multiplexing |
| P10–P17 | Port 1 I/O | Includes UART TXD/RXD (P10/P11), CSI SCLK/CSIO/SI (P12–P14), and SMBus SCL/SDA (P15/P16) |
| RESET | Active-low reset input | Asynchronous external reset; internal power-on reset and watchdog reset also available |
Key Features
| Feature | Design Value |
|---|---|
| Flash endurance | 10,000 write/erase cycles - enables field firmware updates without external EEPROM |
| Noise immunity | Input noise filter on all port pins (configurable per pin) - suppresses EMI-induced glitches in industrial settings |
| Low-power operation | HALT mode consumes ≤1.5 µA at 3.3 V; STOP mode ≤0.5 µA - extends battery life in portable sensor nodes |
| On-chip debug | Single-wire debug interface (SWD) compatible with IE-78K0S-NS emulator - eliminates need for dedicated JTAG header |
| Reset flexibility | Four independent reset sources: power-on, external, watchdog, and illegal instruction - improves system reliability |
Applications
| Industrial Sensor Node | Motor Control Module |
|---|---|
|
Use Scenario: Standalone temperature/humidity sensor with RS-485 output and local data logging. IC Role / Device Role / Timing Role: Main controller executing sensor acquisition, linearization, CRC calculation, and UART-to-RS485 protocol translation. Use Value: Integrated 10-bit A/D and UART eliminate external signal conditioning ICs; Flash memory stores calibration coefficients and firmware updates. |
Use Scenario: Brushless DC motor commutation in HVAC blower systems with speed feedback and overcurrent protection. IC Role / Device Role / Timing Role: Real-time motor timing controller using Timer90 for PWM generation and Timer80 for hall-sensor edge capture. Use Value: Precise 16-bit timer resolution and interrupt latency < 1.5 µs ensure accurate 6-step commutation timing at 30 kHz switching frequency. |
| Smart Appliance UI Panel | Energy Monitoring Subsystem |
|
Use Scenario: Keypad + LED display interface for washing machine control panel with button debounce and LED dimming. IC Role / Device Role / Timing Role: Dedicated UI processor handling matrix keypad scanning, PWM-controlled LED brightness, and I²C communication with main MCU. Use Value: Built-in 8-bit event counter (Timer82) manages key press timing; SMBus interface simplifies inter-processor messaging without additional level shifters. |
Use Scenario: AC current/voltage sampling and RMS calculation in DIN-rail energy meters with isolated SPI communication to host MCU. IC Role / Device Role / Timing Role: Signal acquisition engine performing synchronized 16-channel analog sampling and hardware-accelerated multiplication for RMS math. Use Value: On-chip 16-bit multiplier reduces RMS computation time by 65% vs. software-only implementation; 10-bit A/D meets Class 0.5 meter accuracy requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F100LEAFB#30 | RL78/G13 core, 32 KB Flash, 4 KB RAM, 10-bit A/D (8 ch), same 44-pin LQFP | Limited peripheral count; lacks SMBus and second serial interface | Better power efficiency but reduced I/O flexibility - suitable when Flash size and cost are primary constraints |
| UPD78F1142GA-UEU-AX | 78K0R core, 64 KB Flash, 5 KB RAM, 10-bit A/D (12 ch), 48-pin TQFP | Higher pin count required; no SMBus support; different interrupt vector layout | Stronger analog performance and larger RAM - preferred for designs needing >8 KB data buffers or higher ADC sampling rates |
Compared with UPD78F9177AGB-8ES-A, R5F100LEAFB#30 offers lower active current but sacrifices serial interface versatility, while UPD78F1142GA-UEU-AX provides greater memory headroom at the cost of PCB redesign due to TQFP-48 packaging and missing SMBus functionality.
Availability
UPD78F9177AGB-8ES-A is available at Aetrix Electronics and suitable for industrial sensor nodes, motor control modules, smart appliance UI panels, and energy monitoring subsystems requiring stable component supply across multi-year production cycles.
Supply support for UPD78F9177AGB-8ES-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 formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power solutions for industrial and automotive markets.
The UPD78F9177AGB-8ES-A belongs to the 78K/0S Flash microcontroller product line, designed specifically for cost-sensitive, high-reliability industrial control applications where deterministic real-time response and long-term supply stability are critical.
FAQ
What is the maximum operating frequency of the UPD78F9177AGB-8ES-A?
The UPD78F9177AGB-8ES-A supports a maximum CPU operating frequency of 20 MHz when using the internal high-speed oscillator or an external crystal up to 10 MHz with PLL multiplication. This enables instruction execution times as low as 50 ns for basic operations, meeting timing-critical requirements in motor control and sensor polling loops.
Does the UPD78F9177AGB-8ES-A include an integrated debug interface?
Yes, the UPD78F9177AGB-8ES-A supports single-wire debug (SWD) via the RES pin, compatible with Renesas IE-78K0S-NS emulators and third-party tools. This eliminates the need for a full JTAG header and allows in-circuit programming and real-time debugging without disrupting board layout or signal integrity.
How many A/D input channels does the UPD78F9177AGB-8ES-A support?
The UPD78F9177AGB-8ES-A features a 10-bit successive approximation A/D converter with 16 selectable input channels, mapped across Ports 0 and 1. All channels share a common reference voltage (AVREF), and conversion can be triggered by software, timer overflow, or external event - enabling synchronized multi-channel sampling.
Is the UPD78F9177AGB-8ES-A RoHS compliant?
Yes, the UPD78F9177AGB-8ES-A is RoHS compliant and lead-free, conforming to EU Directive 2011/65/EU. Renesas confirms compliance in its official product change notices and material declarations, and the device carries the "Green" marking per Renesas environmental policy documentation.
What package type is used for the UPD78F9177AGB-8ES-A?
The UPD78F9177AGB-8ES-A uses a 44-pin plastic LQFP package (10 mm × 10 mm, 0.8 mm pitch) with an exposed thermal pad. This package is pin-compatible with other members of the µPD789177 subseries and supports reflow soldering per J-STD-020 moisture sensitivity level 3.
UPD78F9177AGB-8ES-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:
UPD78F9177AGB-8ES-A FAQ
1.How can I place an order for UPD78F9177AGB-8ES-A through Aetrix?
Please submit a Request for Quotation (RFQ) for UPD78F9177AGB-8ES-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 UPD78F9177AGB-8ES-A reliable?
The price and inventory of UPD78F9177AGB-8ES-A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UPD78F9177AGB-8ES-A is usually 5 days.
3.What payment methods are accepted for UPD78F9177AGB-8ES-A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UPD78F9177AGB-8ES-A transactions.
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4.How is shipping managed for UPD78F9177AGB-8ES-A?
UPD78F9177AGB-8ES-A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UPD78F9177AGB-8ES-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 UPD78F9177AGB-8ES-A?
For technical support, including UPD78F9177AGB-8ES-A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UPD78F9177AGB-8ES-A requirements.
6.How does Aetrix verify that UPD78F9177AGB-8ES-A is sourced from the original manufacturer or authorized distributors?
All UPD78F9177AGB-8ES-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 UPD78F9177AGB-8ES-A meets industry standards.
7.What is the process for return or replacement of UPD78F9177AGB-8ES-A?
All UPD78F9177AGB-8ES-A units undergo pre-shipment inspection (PSI). If there is an issue with UPD78F9177AGB-8ES-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 UPD78F9177AGB-8ES-A part is unused and in its original packaging.
Return procedure for UPD78F9177AGB-8ES-A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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