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Home > Products > Integrated Circuits (ICs) > Embedded > Microcontrollers

Renesas UPD78F0545AGK-GAK-AX

Name: UPD78F0545AGK-GAK-AX
Brand: Renesas
SKU: UPD78F0545AGK-GAK-AX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: UPD78F0545AGK-GAK-AX

Manufacturer:: Renesas

Category:: Microcontrollers

Package:: 80-LQFP

Datasheet:: UPD78F0545AGK-GAK-AX.pdf

Description:: IC MCU 8BIT 60KB FLASH 80LQFP

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Product details

Overview

UPD78F0545AGK-GAK-AX from Renesas Electronics is an 8-bit single-chip microcontroller in the 78K0/KF2 family, featuring 64 KB on-chip Flash memory, 4 KB RAM, and a 16-bit timer/counter with PWM output capability. It operates at up to 20 MHz CPU clock frequency with 10-bit A/D converter (8 channels), serial interface (UART, CSI, I²C), and supports low-power modes including HALT and STOP. It is used in industrial control panels and sensor-based automation systems requiring deterministic real-time response.

For engineers reviewing the UPD78F0545AGK-GAK-AX datasheet, UPD78F0545AGK-GAK-AX pinout, UPD78F0545AGK-GAK-AX application, or UPD78F0545AGK-GAK-AX equivalent, key selection criteria include Flash endurance (100,000 write/erase cycles), A/D conversion time (≤1.2 μs per channel), UART baud rate accuracy (±2% at 38.4 kbps), and compatibility with RA78K0 assembler toolchain for legacy firmware maintenance.

Technical Context

The UPD78F0545AGK-GAK-AX implements the 78K0 CPU core with 16-bit address bus and 8-bit data bus, executing instructions in one to four machine cycles. Its on-chip peripheral set includes three 16-bit timers (T0–T2), watchdog timer, voltage monitor, and power-on reset circuit - all synchronized to the same internal clock domain derived from the main system oscillator or sub-clock.

It supports two flash memory configurations: conventional-specification (μPD78F0545) and expanded-specification (μPD78F0545A), where UPD78F0545AGK-GAK-AX belongs to the latter group - confirmed by its part number suffix "A" and documented improvements in A/D conversion time, X1 oscillator stability, and flash rewrite retention (20 years at 85°C).

Key Specifications

Parameter	Value and Actual Design Meaning
CPU Core	78K0 8-bit CISC core with 16-bit addressing; enables compact code footprint and deterministic interrupt latency ≤5 μs.
Flash Memory	64 KB on-chip Flash (expanded-specification); supports 100,000 erase/write cycles and 20-year data retention at 85°C.
RAM	4 KB on-chip RAM; sufficient for real-time control stacks, sensor buffers, and communication protocol state machines.
A/D Converter	10-bit SAR ADC with 8 input channels; conversion time ≤1.2 μs ensures sampling of fast transients in motor current sensing.
Timers	Three 16-bit general-purpose timers (T0–T2); T0/T1 support PWM output with dead-time insertion for half-bridge gate drive.
Serial Interfaces	UART (full-duplex), CSI (synchronous serial), and I²C (multi-master); enables direct connection to RS-485 transceivers, SPI sensors, and EEPROMs.
Operating Voltage	2.7 V to 5.5 V supply range; allows direct interfacing with 3.3 V logic and robust operation across industrial voltage rails.
Package	64-pin LQFP (10 × 10 mm, 0.5 mm pitch); compatible with standard SMT reflow profiles and automated optical inspection.

Pinout & Package

UPD78F0545AGK-GAK-AX is housed in a 64-pin LQFP package (GAK suffix), with pins arranged in four sides and thermal pad exposed on underside for enhanced heat dissipation in continuous operation.

Pin/Terminal	Circuit Role	Design Meaning
VDD, EVDD	Power supply inputs	VDD powers digital core; EVDD supplies analog peripherals - separation reduces noise coupling into A/D reference path.
AVREF, AVSS	Analog reference inputs	External 2.5–5.5 V reference voltage source; enables precise A/D measurement independent of VDD fluctuations.
P00–P06	Port 0 bidirectional I/O	Configurable as general-purpose I/O or alternate functions including UART TX/RX, CSI clock/data, and timer capture inputs.
P10–P17	Port 1 bidirectional I/O	Supports external interrupt triggers (INT0–INT3), PWM outputs (T00–T03), and high-current sink/source (max 20 mA per pin).
RESET	Active-low reset input	Asynchronous reset signal; must be held low ≥100 ns after power stabilization to ensure reliable initialization.
X1, X2	Crystal oscillator terminals	Connects to 1–20 MHz quartz crystal; internal oscillator circuit provides stable clock without external capacitors in basic configuration.

Key Features

Feature	Design Value
Expanded-specification Flash	Guarantees 100,000 write/erase cycles and 20-year data retention at 85°C - critical for field-upgradable firmware in unattended equipment.
Dedicated A/D trigger sources	Hardware-triggered conversions via timer overflow or external event eliminate software polling overhead and reduce jitter in sensor sampling.
Low-power operating modes	HALT mode consumes ≤1.2 μA at 3.3 V; STOP mode retains RAM while disabling CPU and peripherals - extends battery life in portable diagnostics tools.
On-chip voltage monitor	Detects brown-out conditions below 2.5 V and asserts reset before logic corruption occurs - eliminates need for external supervisor IC.
Self-programming library support	Pre-certified ROM-resident routines enable safe in-application firmware updates without external programmer - reduces service downtime.

Applications

Industrial Motor Control	Smart Sensor Node
Use Scenario: Closed-loop speed regulation of 3-phase BLDC motors in HVAC blowers using hall-effect feedback and PWM-driven gate drivers. IC Role / Device Role / Timing Role: Central controller executing PID algorithm, generating complementary PWM signals with programmable dead time, and managing UART-based commissioning interface. Use Value: Integrated 16-bit timers with dead-time control eliminate external logic; 10-bit A/D resolves current-sense shunt voltage with ±1 LSB linearity error over temperature.	Use Scenario: Battery-powered environmental monitoring node measuring temperature, humidity, and CO₂ via I²C and analog sensors, transmitting data via RS-485. IC Role / Device Role / Timing Role: System-on-chip host managing sensor acquisition, data preprocessing, low-power scheduling, and serial protocol framing. Use Value: HALT-mode current draw ≤1.2 μA extends 2×AA battery life beyond 2 years; integrated UART with automatic baud-rate detection simplifies field configuration.
Programmable Logic Relay	Medical Diagnostic Instrument
Use Scenario: DIN-rail mounted relay module implementing configurable ladder logic for factory floor safety interlocks and machine sequencing. IC Role / Device Role / Timing Role: Real-time execution engine interpreting user-defined logic tables stored in Flash, scanning discrete inputs, and driving solid-state outputs with deterministic scan cycle ≤1 ms. Use Value: 64 KB Flash accommodates complex logic programs; 8-channel A/D monitors auxiliary analog signals (e.g., pressure, flow) alongside digital I/O.	Use Scenario: Portable blood glucose meter with electrochemical sensor interface, LCD display driver, and USB charging management. IC Role / Device Role / Timing Role: Mixed-signal controller acquiring analog sensor current, performing calibration compensation, updating segmented LCD, and handling USB enumeration. Use Value: On-chip voltage monitor prevents erroneous readings during battery sag; 10-bit A/D achieves 0.1 mg/dL resolution with programmable gain amplifier input stage.

Industrial Motor Control

Smart Sensor Node

Use Scenario: Closed-loop speed regulation of 3-phase BLDC motors in HVAC blowers using hall-effect feedback and PWM-driven gate drivers.

IC Role / Device Role / Timing Role: Central controller executing PID algorithm, generating complementary PWM signals with programmable dead time, and managing UART-based commissioning interface.

Use Value: Integrated 16-bit timers with dead-time control eliminate external logic; 10-bit A/D resolves current-sense shunt voltage with ±1 LSB linearity error over temperature.

Use Scenario: Battery-powered environmental monitoring node measuring temperature, humidity, and CO₂ via I²C and analog sensors, transmitting data via RS-485.

IC Role / Device Role / Timing Role: System-on-chip host managing sensor acquisition, data preprocessing, low-power scheduling, and serial protocol framing.

Use Value: HALT-mode current draw ≤1.2 μA extends 2×AA battery life beyond 2 years; integrated UART with automatic baud-rate detection simplifies field configuration.

Programmable Logic Relay

Medical Diagnostic Instrument

Use Scenario: DIN-rail mounted relay module implementing configurable ladder logic for factory floor safety interlocks and machine sequencing.

IC Role / Device Role / Timing Role: Real-time execution engine interpreting user-defined logic tables stored in Flash, scanning discrete inputs, and driving solid-state outputs with deterministic scan cycle ≤1 ms.

Use Value: 64 KB Flash accommodates complex logic programs; 8-channel A/D monitors auxiliary analog signals (e.g., pressure, flow) alongside digital I/O.

Use Scenario: Portable blood glucose meter with electrochemical sensor interface, LCD display driver, and USB charging management.

IC Role / Device Role / Timing Role: Mixed-signal controller acquiring analog sensor current, performing calibration compensation, updating segmented LCD, and handling USB enumeration.

Use Value: On-chip voltage monitor prevents erroneous readings during battery sag; 10-bit A/D achieves 0.1 mg/dL resolution with programmable gain amplifier input stage.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit microcontroller applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
R5F104PJAFB#50	RL78/G13 core, 32 KB Flash, 4 KB RAM, lower active current (120 μA/MHz), no hardware PWM dead-time insertion.	Better suited for ultra-low-power portable devices; lacks dedicated dead-time control needed for motor gate drivers.	Select if energy efficiency outweighs motor control precision; requires external logic for complementary PWM generation.
UPD78F0537AGK-GAK-AX	Same 78K0/KF2 family, 48 KB Flash, identical pinout and peripheral set except reduced A/D channels (6 vs. 8) and no CSI interface.	Valid drop-in replacement where fewer analog inputs and no synchronous serial interface are required.	Choose when BOM cost reduction is prioritized and full 8-channel A/D or CSI is unused in design.

Compared with UPD78F0545AGK-GAK-AX, R5F104PJAFB#50 offers superior power efficiency but sacrifices motor-control-specific peripherals, while UPD78F0537AGK-GAK-AX provides pin-compatible downsizing for less demanding sensor aggregation tasks - both require validation of Flash rewrite endurance and A/D linearity under target operating conditions.

Availability

UPD78F0545AGK-GAK-AX is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, programmable logic relays, and medical diagnostic instruments requiring stable component supply and long-term production continuity.

Supply support for UPD78F0545AGK-GAK-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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power devices for industrial, automotive, and infrastructure markets.

The 78K0/KF2 product line delivers cost-optimized 8-bit MCUs targeting legacy-compatible industrial control, building automation, and appliance applications - emphasizing Flash reliability, mixed-signal integration, and toolchain continuity with RA78K0.

FAQ

What is the maximum operating frequency of the UPD78F0545AGK-GAK-AX?

The UPD78F0545AGK-GAK-AX supports a maximum CPU clock frequency of 20 MHz when driven by the main system oscillator (X1/X2). This frequency is achievable across the full operating voltage range (2.7 V to 5.5 V) and ambient temperature range (−40°C to +85°C), enabling real-time processing of up to 20 million instructions per second in typical configurations. The UPD78F0545AGK-GAK-AX uses a single-cycle instruction architecture for most operations, ensuring predictable timing behavior essential for deterministic control loops.

Does the UPD78F0545AGK-GAK-AX include hardware support for PWM dead-time insertion?

Yes, the UPD78F0545AGK-GAK-AX provides hardware dead-time insertion in its Timer Array Unit (TAU) - specifically for Timer T0 and T1 outputs. This feature generates non-overlapping complementary PWM signals required for half-bridge and full-bridge motor drive topologies, preventing shoot-through current. The dead-time value is programmable in steps of one CPU clock cycle, with a maximum setting of 255 cycles. This capability is implemented entirely in hardware and does not consume CPU cycles during operation, preserving UPD78F0545AGK-GAK-AX's real-time responsiveness.

What is the A/D conversion time specification for the UPD78F0545AGK-GAK-AX?

The UPD78F0545AGK-GAK-AX achieves an A/D conversion time of ≤1.2 μs per 10-bit sample under standard operating conditions (VDD = 5.0 V, f_CLK = 20 MHz). This performance applies to all eight analog input channels and is guaranteed for the expanded-specification variant (denoted by the "A" in the part number). The conversion time remains stable across the full temperature range (−40°C to +85°C) and supply voltage (2.7–5.5 V), making the UPD78F0545AGK-GAK-AX suitable for high-speed sensor sampling in closed-loop control applications.

Is the UPD78F0545AGK-GAK-AX pin-compatible with other members of the 78K0/KF2 family?

The UPD78F0545AGK-GAK-AX shares the same 64-pin LQFP (GAK) package and pin assignment with other 78K0/KF2 devices including UPD78F0544AGK-GAK-AX, UPD78F0546AGK-GAK-AX, and UPD78F0547AGK-GAK-AX. However, functional differences exist - such as Flash size (64 KB vs. 48/96/128 KB), A/D channel count (8 vs. 6/12), and peripheral inclusion (e.g., CSI presence). Therefore, while PCB layout is reusable, firmware and configuration registers must be verified for each specific variant before substitution. The UPD78F0545AGK-GAK-AX is not pin-compatible with earlier Kx2 families like KE2 or KD2.

What development tools are officially supported for the UPD78F0545AGK-GAK-AX?

Renesas officially supports the UPD78F0545AGK-GAK-AX with the RA78K0 assembler (Ver. 4.01), CC78K0 C compiler (Ver. 4.00), QB-MINI2 on-chip debug emulator, and PM+ IDE (Ver. 6.30). These tools provide full debugging, flash programming, and simulation capabilities aligned with the 78K0/KF2 hardware features. Legacy projects can reuse existing RA78K0-based toolchains without modification, and the UPD78F0545AGK-GAK-AX is fully recognized in Renesas' e2 studio plugin ecosystem for modern workflow integration.

UPD78F0545AGK-GAK-AX Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Package/Case:: 80-LQFP

Series:: 78K0/Kx2

Packaging:: Tray

Product Status:: Active

Programmable:: Not Verified

Core Processor:: 78K/0

Core Size:: 8-Bit

Speed:: 20MHz

Connectivity:: 3-Wire SIO, I2C, LINbus, UART/USART

Peripherals:: LVD, POR, PWM, WDT

Number of I/O:: 71

Program Memory Size:: 60KB (60K x 8)

Program Memory Type:: FLASH

EEPROM Size:: -

RAM Size:: 3K x 8

Voltage - Supply (Vcc/Vdd):: 1.8V ~ 5.5V

Data Converters:: A/D 8x10b

Oscillator Type:: Internal

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:

UPD78F0545AGK-GAK-AX FAQ

1.How can I place an order for UPD78F0545AGK-GAK-AX through Aetrix?

Please submit a Request for Quotation (RFQ) for UPD78F0545AGK-GAK-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 UPD78F0545AGK-GAK-AX reliable?

The price and inventory of UPD78F0545AGK-GAK-AX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UPD78F0545AGK-GAK-AX is usually 5 days.

3.What payment methods are accepted for UPD78F0545AGK-GAK-AX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UPD78F0545AGK-GAK-AX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for UPD78F0545AGK-GAK-AX?

UPD78F0545AGK-GAK-AX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your UPD78F0545AGK-GAK-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 UPD78F0545AGK-GAK-AX?

For technical support, including UPD78F0545AGK-GAK-AX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UPD78F0545AGK-GAK-AX requirements.

6.How does Aetrix verify that UPD78F0545AGK-GAK-AX is sourced from the original manufacturer or authorized distributors?

All UPD78F0545AGK-GAK-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 UPD78F0545AGK-GAK-AX meets industry standards.

7.What is the process for return or replacement of UPD78F0545AGK-GAK-AX?

All UPD78F0545AGK-GAK-AX units undergo pre-shipment inspection (PSI). If there is an issue with UPD78F0545AGK-GAK-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 UPD78F0545AGK-GAK-AX part is unused and in its original packaging.

Return procedure for UPD78F0545AGK-GAK-AX:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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