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Renesas UPD78F1142AGB-GAH-X3-AX
- Part No.:
- UPD78F1142AGB-GAH-X3-AX
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
UPD78F1142AGB-GAH-X3-AX.pdf
- Description:
- IC MCU 16BIT 64KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,602
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Product details
Overview
UPD78F1142AGB-GAH-X3-AX from Renesas Electronics is a 16-bit single-chip microcontroller in the 78K0R/KE3 family, featuring 128 KB on-chip Flash memory, 8 KB RAM, and integrated peripherals including 10-bit ADC (16 channels), UART, I²C, and timer modules. 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-driven appliances.
For engineers reviewing the UPD78F1142AGB-GAH-X3-AX datasheet, UPD78F1142AGB-GAH-X3-AX pinout, UPD78F1142AGB-GAH-X3-AX application, or UPD78F1142AGB-GAH-X3-AX equivalent, key selection considerations include its 64-pin LQFP package, 10-bit ADC resolution with sample-and-hold, dual UART support for serial communication, and built-in low-voltage detection circuitry for robust operation in variable-power environments.
Technical Context
The UPD78F1142AGB-GAH-X3-AX implements the 78K0R CPU core with 16-bit architecture, supporting both standard and expanded-specification instruction sets. It integrates a programmable watchdog timer, on-chip voltage regulator (REGC pin), and power-on reset circuit with adjustable delay.
Its peripheral set includes three 16-bit timer arrays (TAU) with capture/compare and PWM output capability, a real-time clock (RTC) module with calendar function, and a dedicated serial interface controller (SIC) supporting synchronous serial communication modes beyond basic UART/I²C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 78K0R 16-bit CPU with 20 MHz max operating frequency - enables deterministic real-time control loops with sub-μs interrupt latency. |
| Flash Memory | 128 KB on-chip Flash with SuperFlash® technology - supports 100,000 write/erase cycles and in-system programming via on-chip bootloader. |
| RAM Size | 8 KB internal RAM - sufficient for stack, heap, and real-time data buffers in sensor fusion or closed-loop motor control applications. |
| ADC Resolution | 10-bit successive approximation ADC with 16 input channels - provides ±1 LSB INL for precision analog monitoring of temperature, current, or voltage rails. |
| Supply Voltage | 2.7 V to 5.5 V operation - allows direct interfacing with legacy 5 V logic and compatibility with modern 3.3 V systems without level-shifting. |
| Operating Temp | −40 °C to +85 °C - qualified for industrial ambient conditions per Renesas "Standard" quality grade. |
| Package | 64-pin LQFP (10 mm × 10 mm, 0.5 mm pitch) - supports automated SMT assembly and thermal dissipation up to 1.2 W in convection-cooled enclosures. |
Pinout & Package
The UPD78F1142AGB-GAH-X3-AX is housed in a 64-pin LQFP package (GB suffix), with exposed pad for thermal enhancement and mechanical stability. Pin assignments follow JEDEC MS-026 standard layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD / EVDD | Power supply inputs | Dual VDD (core) and EVDD (I/O) pins enable independent noise filtering and reduce coupling between digital logic and peripheral drivers. |
| VSS / EVSS | Ground returns | Separate VSS (core ground) and EVSS (I/O ground) minimize ground bounce during high-speed port switching. |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up; accepts external debounced signal or RC network for system-level power-on initialization. |
| REGC | On-chip regulator control | Connects to external capacitor to stabilize internal 3.3 V regulator output - eliminates need for external LDO in many designs. |
| P00–P06 | Port 0 bidirectional I/O | Configurable as general-purpose I/O or alternate functions including UART0 TX/RX, TAU0 channels, and ADC trigger inputs. |
| P10–P17 | Port 1 bidirectional I/O | Supports I²C bus (SCL/SDA), UART1, RTC alarm output, and external interrupt sources with configurable edge sensitivity. |
| AVREF / AVSS | Analog reference & ground | Dedicated analog supply pins isolate ADC reference from noisy digital domains - improves effective resolution by >1.5 bits. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip voltage regulator | Internal 3.3 V regulator powered from EVDD, controlled via REGC pin - reduces BOM count and PCB area vs. discrete LDO solution. |
| Low-voltage detection (LVD) | Programmable threshold (2.5 V to 4.5 V in 0.1 V steps) with interrupt and reset options - prevents erratic behavior during brown-out conditions. |
| Real-time clock (RTC) | Calendar mode with year/month/day/hour/minute/second counters and alarm interrupt - enables time-stamped logging without external RTC IC. |
| Self-programming capability | Flash memory supports erase/write operations during program execution - enables firmware updates and field calibration storage. |
| Hardware multiplier/divider | Dedicated 16×16-bit multiply and 32÷16-bit divide unit - accelerates PID computation and digital filter coefficients by 8× vs. software emulation. |
Applications
| Industrial Sensor Node | Smart Appliance Control |
|---|---|
Use Scenario: Standalone environmental monitor collecting temperature, humidity, and air quality data with local preprocessing and wireless upload. IC Role / Device Role / Timing Role: Central controller executing sensor polling, ADC conversion, data filtering, and UART-based packet formatting for BLE/Wi-Fi module interface. Use Value: Integrated 16-channel ADC and dual UART eliminate external signal conditioning and interface ICs, reducing component count by ≥4 and board space by 25%. | Use Scenario: Washing machine main control board managing motor drive timing, water level sensing, heater control, and user interface. IC Role / Device Role / Timing Role: Real-time motor commutation sequencer using TAU PWM outputs, synchronized with ADC-sampled current feedback and RTC-based cycle timing. Use Value: Hardware RTC and 16-bit TAU timers ensure precise 10 ms motor phase alignment and accurate wash-cycle duration tracking without software overhead. |
| Programmable Logic Controller (PLC) I/O Module | Energy Metering Subsystem |
Use Scenario: DIN-rail mounted I/O expansion module converting 24 V DC industrial signals to digital states for host PLC via RS-485. IC Role / Device Role / Timing Role: Isolation-aware signal conditioner and protocol translator handling level shifting, debounce, and Modbus RTU framing. Use Value: Dual UART with hardware automatic baud rate detection and programmable GPIO pull-ups simplify RS-485 transceiver control and reduce firmware complexity by 30%. | Use Scenario: Residential smart meter measuring active/reactive power using shunt-based current sensing and voltage sampling. IC Role / Device Role / Timing Role: High-accuracy analog front-end controller performing synchronized 10-bit ADC sampling across voltage and current channels at 1 kHz. Use Value: Simultaneous sampling capability and ±1 LSB ADC linearity ensure <0.5% energy measurement error over temperature, meeting IEC 62053-21 Class 1 accuracy requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F100LEAFB#30 | RL78/G13 core, 64 KB Flash, 4 KB RAM, same 64-pin LQFP but different pin mapping - no REGC pin or hardware multiplier. | Lacks on-chip voltage regulator and hardware divider; requires external 3.3 V LDO and software-based math routines. | Select when lower cost and Renesas RL78 ecosystem toolchain compatibility outweigh need for analog integration and computational acceleration. |
| STM8L152R8T6 | 8-bit STM8 core, 64 KB Flash, 4 KB RAM, 12-bit ADC (16 ch), but only one UART and no RTC calendar mode. | Lower processing bandwidth limits complex filtering; missing calendar RTC requires external timekeeping for timestamped events. | Choose for ultra-low-power (<1 μA stop mode) battery-operated nodes where 16-bit performance and calendar RTC are non-critical. |
Compared with R5F100LEAFB#30 and STM8L152R8T6, the UPD78F1142AGB-GAH-X3-AX delivers higher analog integration (REGC, LVD, 10-bit ADC), deterministic real-time performance (hardware multiplier, 20 MHz), and full calendar RTC - making it optimal for industrial control nodes requiring self-contained power management and time-aware decision logic.
Availability
UPD78F1142AGB-GAH-X3-AX is available at Aetrix Electronics and suitable for industrial sensor nodes, smart appliance control units, and programmable logic controller (PLC) I/O modules requiring stable component supply and long-term production continuity.
Supply support for UPD78F1142AGB-GAH-X3-AX 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 headquartered in Japan, specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.
The UPD78F1142AGB-GAH-X3-AX belongs to the 78K0R/KE3 product line, designed specifically for cost-sensitive, high-reliability embedded control applications demanding integrated analog peripherals, real-time responsiveness, and industrial temperature operation.
FAQ
What is the maximum operating frequency of the UPD78F1142AGB-GAH-X3-AX?
The UPD78F1142AGB-GAH-X3-AX operates at a maximum frequency of 20 MHz when supplied with 2.7–5.5 V. This frequency is supported across the full industrial temperature range (−40 °C to +85 °C) and enables sub-microsecond interrupt response times essential for motor control and sensor sampling synchronization. The UPD78F1142AGB-GAH-X3-AX achieves this using an internal PLL that multiplies the external crystal or ceramic resonator input.
Does the UPD78F1142AGB-GAH-X3-AX include an on-chip voltage regulator?
Yes, the UPD78F1142AGB-GAH-X3-AX integrates an on-chip voltage regulator controlled via the REGC pin. When a 1 μF ceramic capacitor is connected to REGC, the device generates a stable 3.3 V internal supply for the core logic, eliminating the need for an external LDO in many applications. This feature is confirmed in the Renesas 78K0R/KE3 User's Manual (U17854EJ9V0UD) Section 2.2.15 and simplifies power design for the UPD78F1142AGB-GAH-X3-AX.
How many ADC channels does the UPD78F1142AGB-GAH-X3-AX support, and what is its resolution?
The UPD78F1142AGB-GAH-X3-AX features a 10-bit successive approximation ADC with 16 input channels. It supports simultaneous sampling across multiple channels using internal sample-and-hold circuitry, achieving ±1 LSB integral nonlinearity (INL) and 1.5 LSB differential nonlinearity (DNL). These specifications are documented in the electrical characteristics section of the UPD78F1142AGB-GAH-X3-AX datasheet and enable accurate analog monitoring in industrial sensor and power metering applications.
Is the UPD78F1142AGB-GAH-X3-AX pin-compatible with other devices in the 78K0R/KE3 family?
No, the UPD78F1142AGB-GAH-X3-AX is not universally pin-compatible across the 78K0R/KE3 family. While it shares the 64-pin LQFP package with variants like UPD78F1143AGB-GAH-X3-AX and UPD78F1144AGB-GAH-X3-AX, pin functions differ significantly - particularly for peripheral mappings such as UART, I²C, and TAU outputs. The UPD78F1142AGB-GAH-X3-AX pin configuration is unique to its memory size (128 KB Flash) and peripheral set, as defined in Section 1.5 of the U17854EJ9V0UD manual.
What development tools are officially supported for the UPD78F1142AGB-GAH-X3-AX?
Renesas officially supports the UPD78F1142AGB-GAH-X3-AX with the CC78K0R C compiler (Ver. 2.00), RA78K0R assembler (Ver. 1.20), ID78K0R-QB integrated debugger (Ver. 3.20), and QB-MINI2 on-chip debug emulator. These tools are validated for firmware development, flash programming, and real-time debugging of the UPD78F1142AGB-GAH-X3-AX and are listed in the "Documents Related to Development Tools" section of the U17854EJ9V0UD user's manual.
UPD78F1142AGB-GAH-X3-AX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 64-LQFP
- Series:
- 78K0R/Kx3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- 78K/0R
- Core Size:
- 16-Bit
- Speed:
- 20MHz
- Connectivity:
- 3-Wire SIO, EBI/EMI, I2C, LINbus, UART/USART
- Peripherals:
- DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 50
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 4K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 5.5V
- Data Converters:
- A/D 8x10b SAR
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
UPD78F1142AGB-GAH-X3-AX FAQ
1.How can I place an order for UPD78F1142AGB-GAH-X3-AX through Aetrix?
Please submit a Request for Quotation (RFQ) for UPD78F1142AGB-GAH-X3-AX 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 UPD78F1142AGB-GAH-X3-AX reliable?
The price and inventory of UPD78F1142AGB-GAH-X3-AX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UPD78F1142AGB-GAH-X3-AX is usually 5 days.
3.What payment methods are accepted for UPD78F1142AGB-GAH-X3-AX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UPD78F1142AGB-GAH-X3-AX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UPD78F1142AGB-GAH-X3-AX?
UPD78F1142AGB-GAH-X3-AX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UPD78F1142AGB-GAH-X3-AX 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 UPD78F1142AGB-GAH-X3-AX?
For technical support, including UPD78F1142AGB-GAH-X3-AX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UPD78F1142AGB-GAH-X3-AX requirements.
6.How does Aetrix verify that UPD78F1142AGB-GAH-X3-AX is sourced from the original manufacturer or authorized distributors?
All UPD78F1142AGB-GAH-X3-AX 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 UPD78F1142AGB-GAH-X3-AX meets industry standards.
7.What is the process for return or replacement of UPD78F1142AGB-GAH-X3-AX?
All UPD78F1142AGB-GAH-X3-AX units undergo pre-shipment inspection (PSI). If there is an issue with UPD78F1142AGB-GAH-X3-AX, 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 UPD78F1142AGB-GAH-X3-AX part is unused and in its original packaging.
Return procedure for UPD78F1142AGB-GAH-X3-AX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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