Renesas UPD78F1011GK-GAK-AX

Overview

UPD78F1011GK-GAK-AX from Renesas Electronics is a 16-bit single-chip microcontroller in the 78K0R/KF3-L family, featuring 128 KB on-chip Flash memory, 8 KB RAM, and a 20 MHz max CPU clock. It integrates UART, I²C, 16-bit timer arrays, ADC (10-bit, 12-channel), and operates from 2.7 V to 5.5 V supply. It targets industrial control modules requiring deterministic real-time response and embedded sensor interfacing.

For engineers reviewing the UPD78F1011GK-GAK-AX datasheet, UPD78F1011GK-GAK-AX pinout, UPD78F1011GK-GAK-AX application, or UPD78F1011GK-GAK-AX equivalent, key selection considerations include its 100-pin LQFP package, dual EVDD/EVSS domains for analog/digital isolation, 12-channel 10-bit ADC with hardware-triggered sampling, and support for on-chip self-programming via dedicated FLMD0/REGC pins.

Technical Context

The UPD78F1011GK-GAK-AX implements the 78K0R CPU core with 16-bit ALU, 24-bit address space, and instruction set compatible with earlier 78K0 derivatives. It uses a Harvard architecture with separate program/data buses and includes an on-chip voltage regulator (REGC pin-controlled) enabling single-supply operation.

Its peripheral subsystem includes a 16-bit multifunction timer array (TMRh) supporting input capture, output compare, PWM generation, and interval timing; a 10-bit successive-approximation ADC with internal reference and sample-and-hold; and dual serial interfaces - one UART with LIN support and one I²C-compatible interface with multimaster capability.

Key Specifications

Pinout & Package

UPD78F1011GK-GAK-AX is housed in a 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch) package with exposed thermal pad. Pin assignments follow the 78K0R/KF3-L standard layout, including dedicated analog/digital power and ground pairs, reset and mode configuration pins (RESET, FLMD0, REGC), and port groups P0–P15 with configurable I/O functions.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit microcontroller applications.

Compared with R5F100PLAFP#30, UPD78F1011GK-GAK-AX offers superior analog integrity via dual power domains and integrated regulation, while UPD78F1012GK-GAK-AX extends connectivity with CAN-making the original part optimal for LIN/UART-only systems needing robust ADC performance without CAN overhead.

Availability

UPD78F1011GK-GAK-AX is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, and automotive body electronics requiring stable component supply across multi-year production cycles.

Supply support for UPD78F1011GK-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 78K0R/KF3-L product line delivers cost-optimized 16-bit MCUs targeting resource-constrained embedded systems requiring high analog integration, deterministic real-time performance, and long-lifecycle support in industrial automation and automotive body electronics.

FAQ

What is the maximum operating frequency of the UPD78F1011GK-GAK-AX?

The UPD78F1011GK-GAK-AX supports a maximum CPU clock frequency of 20 MHz under specified supply and temperature conditions. This is achieved using the on-chip oscillator or an external crystal up to 20 MHz, with optional PLL multiplication for internal high-speed clocks. The actual achievable frequency depends on VDD level and ambient temperature per the Electrical Characteristics table in the Renesas datasheet.

Does the UPD78F1011GK-GAK-AX support in-system programming?

Yes, the UPD78F1011GK-GAK-AX supports in-system programming via its on-chip Flash memory. When FLMD0 is held low during power-on reset, the device enters on-chip debug/self-programming mode, allowing firmware updates through the UART interface without removing the chip from the board. This capability is implemented using Renesas' Flash Self Programming Library Type02.

What is the function of the REGC pin on the UPD78F1011GK-GAK-AX?

The REGC pin on the UPD78F1011GK-GAK-AX controls the internal voltage regulator. When pulled high, it enables the on-chip 3.3 V regulator, allowing operation from a single 5 V supply while providing clean, regulated power to the CPU core and analog peripherals. When low, the internal regulator is disabled, requiring external 3.3 V supply to EVDD0/EVDD1 pins.

How many ADC channels does the UPD78F1011GK-GAK-AX have, and what is their resolution?

The UPD78F1011GK-GAK-AX integrates a 10-bit successive-approximation ADC with 12 input channels. All channels share a common sample-and-hold circuit and support hardware triggering from timer overflows or external events. The ADC uses an internal 2.5 V reference but also accepts external references applied to the AVREF pin, enabling flexible full-scale range configuration.

Is the UPD78F1011GK-GAK-AX pin-compatible with other devices in the 78K0R/KF3-L family?

Yes, the UPD78F1011GK-GAK-AX shares the same 100-pin LQFP package and pinout with other 78K0R/KF3-L devices including UPD78F1010GK-GAK-AX and UPD78F1012GK-GAK-AX. This allows direct PCB reuse across variants differing only in Flash size, RAM capacity, or peripheral inclusion-such as CAN support in the UPD78F1012GK-GAK-AX-without layout changes.