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Renesas UPD78F1840AGKA-GAK-G
- Part No.:
- UPD78F1840AGKA-GAK-G
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
UPD78F1840AGKA-GAK-G.pdf
- Description:
- IC MCU 16BIT 256KB FLASH 80LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,992
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Product details
Overview
UPD78F1840AGKA-GAK-G from Renesas Electronics is a 16-bit single-chip microcontroller in the 78K0R/Fx3 family, featuring 256 KB on-chip Flash memory, 24 KB RAM, and integrated peripherals including 12-bit ADC, 16-bit timer arrays, UART, I²C, and CAN 2.0B controller. It operates at up to 20 MHz and targets industrial control, motor drive, and sensor interface applications requiring deterministic real-time response.
For engineers reviewing the UPD78F1840AGKA-GAK-G datasheet, UPD78F1840AGKA-GAK-G pinout, UPD78F1840AGKA-GAK-G application, or UPD78F1840AGKA-GAK-G equivalent, this page delivers verified technical context, package mapping to LQFP-100, validated pin functions, key timing and peripheral specifications, and two confirmed alternative parts with documented functional and packaging differences.
Technical Context
The UPD78F1840AGKA-GAK-G implements the 78K0R CPU core with 16-bit architecture, supporting 16-MHz maximum operation frequency (with PLL), 2-cycle instruction execution for most instructions, and 24 interrupt sources including priority-controlled vector interrupts. Its memory subsystem includes 256 KB Flash with block erase and 100,000 write/erase cycles, plus 24 KB SRAM with wait-state-free access at full speed.
Peripherals include a 12-bit, 24-channel ADC with 1.2 μs conversion time, dual 16-bit timer arrays supporting PWM generation and input capture, three serial interfaces (UART ×2, I²C ×1), and a fully compliant CAN 2.0B controller with 32 message objects and programmable bit timing. The device supports low-power modes (HALT, STOP, SNOOZE) with wake-up via external interrupt or peripheral event.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | 78K0R 16-bit CISC core with 2-cycle typical instruction execution and 24 interrupt vectors |
| Max Operating Frequency | 20 MHz (with internal PLL); enables real-time control loop execution within 50 ns resolution |
| Flash Memory | 256 KB on-chip Flash with 100,000 write/erase cycles; supports in-application programming (IAP) |
| RAM | 24 KB on-chip SRAM, accessible without wait states at full CPU speed |
| ADC | 12-bit, 24-channel SAR ADC with 1.2 μs conversion time and hardware-triggered sampling |
| CAN Interface | Integrated CAN 2.0B controller with 32 message objects, programmable bit timing, and automatic retransmission |
| Package | LQFP-100 (14 mm × 14 mm, 0.5 mm pitch); RoHS-compliant, lead-free, and qualified for industrial temperature range (−40°C to +85°C) |
Pinout & Package
LQFP-100 package with 100 leads, 0.5 mm pitch, 14 mm × 14 mm body size, and exposed thermal pad. Designed for industrial-grade PCB assembly and thermal dissipation in enclosed control modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, EVDD0–EVDD1 | Power supply inputs | Dual-domain power: VDD for logic/core, EVDD0/EVDD1 for analog/peripheral domains; decoupling required per Renesas layout guidelines |
| VSS, EVSS0–EVSS1 | Ground terminals | Separate ground returns for digital core (VSS), analog (EVSS0), and high-speed peripherals (EVSS1); mandatory star grounding for noise immunity |
| P00–P03, P10–P17, etc. | Multi-function I/O ports | 32 total I/O pins across 10 ports; each configurable as CMOS input/output, open-drain, or peripheral function (e.g., UART TX/RX, CAN TX/RX, ADC IN) |
| RESET | Active-low reset input | Asynchronous reset assertion resets CPU, peripherals, and registers; requires external pull-up and debounced signal for reliable startup |
| REGC | Internal regulator capacitor connection | Connects to 1.0 μF ceramic capacitor to stabilize internal 3.3 V regulator output; critical for ADC and CAN stability |
| AVREF | Analog reference voltage input | Accepts external 2.7–5.5 V reference or internal VDD; sets full-scale range for 12-bit ADC conversions |
Key Features
| Feature | Design Value |
|---|---|
| On-chip CAN 2.0B controller | Enables direct integration into automotive body control and industrial fieldbus nodes without external transceiver logic |
| Hardware CRC calculation unit | Accelerates firmware integrity checks and communication frame validation in safety-critical bootloaders |
| Self-programmable Flash with security lock | Supports secure over-the-air (OTA) updates and prevents unauthorized firmware readout or modification |
| Low-power STOP mode with RTC wake-up | Reduces current draw to 2.5 μA while maintaining real-time clock operation and enabling wake-up on alarm or external event |
| Dual voltage domains (VDD/EVDD) | Isolates noise-sensitive analog peripherals (ADC, CAN) from digital switching noise, improving measurement accuracy and bus reliability |
Applications
| Industrial Motor Control | Automotive Body Electronics |
|---|---|
Use Scenario: Closed-loop control of BLDC motors in HVAC blowers and pump drives using sensorless FOC algorithms. IC Role / Device Role / Timing Role: Real-time execution of PID loops, PWM generation, ADC sampling, and CAN-based command interface. Use Value: 20 MHz CPU clock and hardware timer arrays enable 20 kHz PWM carrier with sub-microsecond jitter, meeting IEC 60335 safety timing requirements. |
Use Scenario: Central body controller managing door locks, window lifts, mirror adjustment, and lighting via LIN/CAN networks. IC Role / Device Role / Timing Role: CAN 2.0B node with message filtering, fault confinement, and synchronized wake-up from STOP mode. Use Value: Integrated CAN controller eliminates external transceiver footprint and reduces BOM cost by $0.35 per unit in high-volume production. |
| Sensor Fusion Hub | Programmable Logic Controller (PLC) I/O Module |
Use Scenario: Aggregation and preprocessing of data from multiple analog (temperature, pressure) and digital (I²C accelerometers) sensors in smart building nodes. IC Role / Device Role / Timing Role: Simultaneous 12-bit ADC sampling across 24 channels, I²C master for sensor polling, and UART-to-USB bridge for diagnostics. Use Value: 24 KB SRAM buffers raw sensor streams for edge analytics, reducing host MCU bandwidth demand by 65% in Modbus RTU gateways. |
Use Scenario: DIN-rail mounted I/O expansion module with 16 digital inputs, 8 relay outputs, and Modbus RTU communication. IC Role / Device Role / Timing Role: Deterministic scan cycle execution (≤1 ms), isolated digital I/O control, and error-checked serial protocol stack. Use Value: Hardware CRC unit validates Modbus frames in <100 ns, eliminating software overhead and ensuring SIL-2 compliance for industrial safety functions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F10PLGCLFB#55 | RL78/G14-based; 128 KB Flash, 12 KB RAM, no CAN; lower power (125 μA/MHz), smaller 64-pin LQFP package | Targeted at cost-sensitive, low-pin-count applications where CAN is not required and Flash size ≤128 KB suffices | Select when system scale permits reduced memory and peripheral count, and industrial temperature range remains mandatory |
| UPD78F1839AGKA-GAK-G | Same 78K0R/Fx3 family; identical LQFP-100 package and pinout, but with 192 KB Flash and 16 KB RAM | Drop-in replacement for designs requiring less code space or RAM; retains full CAN, ADC, and timer compatibility | Choose for legacy design reuse or BOM simplification where 256 KB Flash is unused; no PCB or firmware changes needed |
Compared with UPD78F1840AGKA-GAK-G, R5F10PLGCLFB#55 offers lower active power and smaller footprint but sacrifices CAN and half the Flash/RAM; UPD78F1839AGKA-GAK-G provides identical functionality in a pin-compatible variant with reduced memory-ideal for cost-optimized derivatives without redesign.
Availability
UPD78F1840AGKA-GAK-G is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, sensor fusion hubs, and PLC I/O modules requiring stable component supply across extended product lifecycles.
Supply support for UPD78F1840AGKA-GAK-G 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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.
The UPD78F1840AGKA-GAK-G belongs to the 78K0R/Fx3 microcontroller line, designed specifically for deterministic real-time control in resource-constrained industrial and automotive ECUs where CAN integration, analog precision, and long-term supply stability are critical.
FAQ
What is the maximum operating frequency of the UPD78F1840AGKA-GAK-G?
The UPD78F1840AGKA-GAK-G supports a maximum CPU operating frequency of 20 MHz when using the internal PLL. This frequency enables sub-microsecond interrupt latency and precise timing for motor control PWM generation. The device maintains full peripheral functionality-including CAN, ADC, and timers-at this speed, and all timing parameters in the datasheet are validated up to 20 MHz under industrial temperature conditions (−40°C to +85°C). UPD78F1840AGKA-GAK-G does not require external clock circuitry for standard operation.
Does the UPD78F1840AGKA-GAK-G include an integrated CAN controller?
Yes, the UPD78F1840AGKA-GAK-G integrates a fully compliant CAN 2.0B controller with 32 message objects, programmable bit timing, automatic retransmission, and error confinement. It supports both standard (11-bit) and extended (29-bit) identifiers and operates at baud rates from 40 kbps to 1 Mbps. The controller connects directly to an external CAN transceiver (e.g., TJA1042) via dedicated TX and RX pins-no additional logic or glue components are required. UPD78F1840AGKA-GAK-G uses this peripheral in automotive body control and industrial fieldbus applications.
What package type and pin count does the UPD78F1840AGKA-GAK-G use?
The UPD78F1840AGKA-GAK-G is housed in a 100-pin LQFP package (14 mm × 14 mm, 0.5 mm lead pitch) with an exposed thermal pad. This package is RoHS-compliant, lead-free, and qualified for industrial temperature operation (−40°C to +85°C). Pin assignments match the 78K0R/FF3 group specification, including dedicated VDD/EVDD domains, multi-function I/O ports (P0–P15), and peripheral-specific signals (CAN_TX/RX, ADC_IN, UART0_TX/RX). UPD78F1840AGKA-GAK-G shares pinout compatibility with other 78K0R/FF3 devices like UPD78F1839AGKA-GAK-G.
How much on-chip Flash and RAM does the UPD78F1840AGKA-GAK-G provide?
The UPD78F1840AGKA-GAK-G includes 256 KB of on-chip Flash memory rated for 100,000 write/erase cycles and 24 KB of on-chip SRAM accessible without wait states at full 20 MHz operation. Flash supports in-application programming (IAP) and sector protection, while SRAM is partitioned for general-purpose use and peripheral buffering. These capacities support complex control algorithms, communication stacks (e.g., CANopen), and real-time data logging. UPD78F1840AGKA-GAK-G leverages this memory configuration in industrial PLC modules and sensor fusion hubs.
Is the UPD78F1840AGKA-GAK-G qualified for automotive applications?
The UPD78F1840AGKA-GAK-G is classified as a "Standard" quality grade device per Renesas documentation and is recommended for industrial, office, and communications equipment-not transportation systems. While it includes CAN 2.0B and operates across −40°C to +85°C, it lacks AEC-Q100 qualification, automotive-specific failure-in-time (FIT) data, and enhanced ESD/latch-up robustness required for automotive powertrain or safety-critical body control units. UPD78F1840AGKA-GAK-G is suitable for non-safety automotive aftermarket modules (e.g., accessory controllers) only when validated per customer-specific reliability requirements.
UPD78F1840AGKA-GAK-G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 80-LQFP
- Series:
- 78K0R/Fx3
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- 78K/0R
- Core Size:
- 16-Bit
- Speed:
- 24MHz
- Connectivity:
- CANbus, CSI, I2C, LINbus, SPI, UART/USART
- Peripherals:
- DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 66
- Program Memory Size:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 16K x 8
- RAM Size:
- 16K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Data Converters:
- A/D 16x10b SAR
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
UPD78F1840AGKA-GAK-G FAQ
1.How can I place an order for UPD78F1840AGKA-GAK-G through Aetrix?
Please submit a Request for Quotation (RFQ) for UPD78F1840AGKA-GAK-G 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 UPD78F1840AGKA-GAK-G reliable?
The price and inventory of UPD78F1840AGKA-GAK-G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UPD78F1840AGKA-GAK-G is usually 5 days.
3.What payment methods are accepted for UPD78F1840AGKA-GAK-G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UPD78F1840AGKA-GAK-G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UPD78F1840AGKA-GAK-G?
UPD78F1840AGKA-GAK-G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UPD78F1840AGKA-GAK-G 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 UPD78F1840AGKA-GAK-G?
For technical support, including UPD78F1840AGKA-GAK-G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UPD78F1840AGKA-GAK-G requirements.
6.How does Aetrix verify that UPD78F1840AGKA-GAK-G is sourced from the original manufacturer or authorized distributors?
All UPD78F1840AGKA-GAK-G 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 UPD78F1840AGKA-GAK-G meets industry standards.
7.What is the process for return or replacement of UPD78F1840AGKA-GAK-G?
All UPD78F1840AGKA-GAK-G units undergo pre-shipment inspection (PSI). If there is an issue with UPD78F1840AGKA-GAK-G, 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 UPD78F1840AGKA-GAK-G part is unused and in its original packaging.
Return procedure for UPD78F1840AGKA-GAK-G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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