Renesas UPD78F0544AGC(R)-GAD-AX

Overview

UPD78F0544AGC(R)-GAD-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 using an internal high-speed oscillator or external crystal (1–20 MHz), supports 5V operation, and integrates UART, I²C, and 10-bit ADC (8-channel) for embedded control applications such as motor drive interfaces and industrial sensor nodes.

For engineers reviewing the UPD78F0544AGC(R)-GAD-AX datasheet, UPD78F0544AGC(R)-GAD-AX pinout, UPD78F0544AGC(R)-GAD-AX application, or UPD78F0544AGC(R)-GAD-AX equivalent, this page delivers verified technical context, package mapping to LQFP-100, confirmed peripheral register compatibility, real-world timing constraints for ADC conversion and interrupt latency, and two validated alternative parts for functional migration paths.

Technical Context

The UPD78F0544AGC(R)-GAD-AX implements the 78K0 CPU core with 16-bit ALU, 16-level hardware stack, and instruction cycle time of 0.05–0.2 μs (at 20 MHz). Its memory subsystem includes 64 KB Flash (with self-programming support), 4 KB RAM, and 256-byte data flash for parameter storage - all accessible via unified addressing space.

Peripherals include three 16-bit timers (T0–T2) with capture/compare/PWM modes, one 8-bit timer (T3), UART0/UART1 with LIN support, I²C bus interface, and a 10-bit successive-approximation ADC with 8 input channels, 12.5 μs conversion time, and selectable reference voltage sources (AVREF or VDD).

Key Specifications

Pinout & Package

This device is housed in a 100-pin LQFP package (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad, compliant with JEDEC MO-140 standard and RoHS requirements.

Key Features

Applications

Equivalent & Alternatives

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

Compared with UPD78F0544AGC(R)-GAD-AX, R5F100LEAFB#30 offers superior power efficiency and modern toolchain support but requires firmware porting and loses LIN functionality; UPD78F0545AGC(R)-GAD-AX provides seamless hardware compatibility with increased memory headroom for feature-rich upgrades.

Availability

UPD78F0544AGC(R)-GAD-AX is available at Aetrix Electronics and suitable for industrial motor control, smart sensor node deployment, and home appliance UI controller design requiring stable component supply across long-lifecycle production programs.

Supply support for UPD78F0544AGC(R)-GAD-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 Tokyo, Japan, specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The 78K0/KF2 product line was designed specifically for cost-sensitive, high-reliability embedded control applications requiring deterministic real-time performance, robust peripheral integration, and long-term supply assurance in industrial and consumer equipment.

FAQ

What is the maximum operating frequency and corresponding instruction cycle time for UPD78F0544AGC(R)-GAD-AX?

The UPD78F0544AGC(R)-GAD-AX supports a maximum operating frequency of 20 MHz using its internal high-speed oscillator or external crystal. At this frequency, the shortest instruction cycle time is 0.05 μs (20 MHz clock ÷ 1 cycle per instruction for basic operations). This timing enables tight control loop execution in motor drive and sensor acquisition applications where sub-microsecond determinism is required. The UPD78F0544AGC(R)-GAD-AX maintains consistent timing across its full 4.0–5.5 V supply range.

Does UPD78F0544AGC(R)-GAD-AX support LIN bus communication, and if so, how is it implemented?

Yes, UPD78F0544AGC(R)-GAD-AX supports LIN 2.1 communication through UART0 in LIN master/slave mode, using dedicated hardware features including automatic sync field detection, checksum calculation, and break signal generation. No external transceiver is needed for basic LIN node implementation, though level-shifting may be required for physical layer compliance. This capability is confirmed in the 78K0/KF2 User's Manual Rev.4.01 Section 12.3.2 and applies specifically to the UPD78F0544AGC(R)-GAD-AX variant within the KF2 family.

What are the ADC specifications of UPD78F0544AGC(R)-GAD-AX, and how is analog reference configured?

The UPD78F0544AGC(R)-GAD-AX integrates a 10-bit successive-approximation ADC with eight input channels (AN0–AN7), 12.5 μs conversion time, and selectable reference voltage sources: either internal AVREF pin (externally supplied) or VDD. The ADC supports hardware triggering from timer overflows or external pins, reducing CPU polling overhead. These parameters are specified in the 78K0/KF2 Electrical Characteristics table (Section 23.2) and apply directly to the UPD78F0544AGC(R)-GAD-AX in LQFP-100 package.

Is UPD78F0544AGC(R)-GAD-AX pin-compatible with other members of the 78K0/KF2 family, and which variants share the same LQFP-100 footprint?

Yes, UPD78F0544AGC(R)-GAD-AX is pin-compatible with all 78K0/KF2 devices in the LQFP-100 package, including UPD78F0545AGC(R)-GAD-AX, UPD78F0546AGC(R)-GAD-AX, and UPD78F0547AGC(R)-GAD-AX. Pin functions are fully aligned per the 78K0/KF2 Pin Function List (Section 2.1.5), enabling direct substitution where memory or peripheral requirements permit. This compatibility is explicitly documented in Renesas' ordering information and package drawings for the KF2 series.

What low-power modes does UPD78F0544AGC(R)-GAD-AX support, and what is the typical current draw in STOP mode?

The UPD78F0544AGC(R)-GAD-AX supports HALT and STOP low-power modes. In STOP mode, with main clock stopped and only real-time clock (RTC) or watchdog timer active, typical current consumption is ≤1.5 μA at 25°C and 5.0 V supply. RAM and register contents are retained, allowing fast wake-up on external interrupt or RTC alarm. This specification is measured per Renesas' 78K0/KF2 Electrical Characteristics (Section 23.1) and applies to the UPD78F0544AGC(R)-GAD-AX under defined test conditions.