Renesas UPD78F1003GB(R)-GAF-M1-AX

Overview

UPD78F1003GB(R)-GAF-M1-AX from Renesas Electronics is a 16-bit single-chip microcontroller in the 78K0R/KC3-L family, featuring 128 KB on-chip Flash memory, 8 KB RAM, and integrated peripherals including 10-bit ADC (8 channels), UART, I²C, and 16-bit timer arrays. It operates at up to 20 MHz with supply voltage range of 2.7–5.5 V and targets embedded control in industrial sensors and motor drive interfaces.

For engineers reviewing the UPD78F1003GB(R)-GAF-M1-AX datasheet, UPD78F1003GB(R)-GAF-M1-AX pinout, UPD78F1003GB(R)-GAF-M1-AX application, or UPD78F1003GB(R)-GAF-M1-AX equivalent, key selection considerations include its 48-pin LQFP package, Flash endurance (100k write/erase cycles), 10-bit ADC resolution with ±1 LSB INL, and support for on-chip debug via single-wire interface.

Technical Context

The UPD78F1003GB(R)-GAF-M1-AX implements the 78K0R CPU core with 16-bit architecture, Harvard memory organization, and instruction set compatible with earlier 78K/0R devices. It integrates a 3-channel 16-bit timer array with input capture, output compare, and PWM generation capability, plus a watchdog timer with independent clock source.

Its analog subsystem includes a 10-bit successive-approximation ADC with programmable sampling time, internal reference voltage (1.45 V), and selectable conversion triggers from timers or external pins. Power management supports HALT, STOP, and SNOOZE modes with wake-up from multiple sources including external interrupts and ADC completion.

Key Specifications

Pinout & Package

UPD78F1003GB(R)-GAF-M1-AX is housed in a 48-pin LQFP (7 mm × 7 mm, 0.5 mm pitch) package with exposed thermal pad. Pin functions are defined per the 78K0R/KC3-L specification and include dedicated reset, clock input (X1/X2), and dual power domains (VDD/EVDD, VSS/EVSS) for analog/digital isolation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100PLASP#30 and UPD78F1002GB(R)-GAF-M1-AX, the UPD78F1003GB(R)-GAF-M1-AX delivers higher Flash/RAM capacity for feature-rich firmware while maintaining full pin and debug compatibility within the KC3-L family-making it optimal for industrial control upgrades requiring backward-compatible expansion.

Availability

UPD78F1003GB(R)-GAF-M1-AX is available at Aetrix Electronics and suitable for industrial sensor nodes, BLDC motor controllers, smart power meter interfaces, and PLC I/O modules requiring stable component supply across multi-year production cycles.

Supply support for UPD78F1003GB(R)-GAF-M1-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 specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The 78K0R/KC3-L product line delivers high-integration 16-bit MCUs optimized for cost-sensitive industrial control applications requiring robust analog performance, deterministic real-time response, and long-term supply stability.

FAQ

What is the maximum operating frequency of the UPD78F1003GB(R)-GAF-M1-AX?

The UPD78F1003GB(R)-GAF-M1-AX operates at a maximum CPU clock frequency of 20 MHz when driven by an external crystal or oscillator. Its internal high-speed system clock (f_MAIN) is derived from the selected oscillation source and supports full-speed execution across the entire 2.7–5.5 V supply range and −40°C to +85°C ambient temperature.

Does the UPD78F1003GB(R)-GAF-M1-AX support in-circuit debugging without external hardware?

Yes, the UPD78F1003GB(R)-GAF-M1-AX includes a single-wire debug (SWD) interface compliant with Renesas' standard debug protocol. It enables full in-circuit debugging-including breakpoints, register inspection, and real-time memory access-using only two pins (SWDIO and SWCLK) and no external emulator required beyond a USB-to-SWD adapter.

What ADC resolution and accuracy does the UPD78F1003GB(R)-GAF-M1-AX provide?

The UPD78F1003GB(R)-GAF-M1-AX features a 10-bit successive-approximation ADC with ±1 LSB integral nonlinearity (INL) and ±1 LSB differential nonlinearity (DNL). It achieves maximum sampling rates of 100 kSPS and supports programmable sampling time, internal 1.45 V reference, or external reference input for precision sensor measurements.

Is the UPD78F1003GB(R)-GAF-M1-AX pin-compatible with other 78K0R/KC3-L devices?

Yes, the UPD78F1003GB(R)-GAF-M1-AX shares the same 48-pin LQFP package and pin assignment with other 78K0R/KC3-L members including UPD78F1000, UPD78F1001, and UPD78F1002. This allows direct PCB reuse across firmware variants differing only in Flash size and RAM allocation.

What power-saving modes are available on the UPD78F1003GB(R)-GAF-M1-AX?

The UPD78F1003GB(R)-GAF-M1-AX supports three low-power modes: HALT (CPU halted, peripherals active), STOP (all clocks stopped except watchdog), and SNOOZE (ADC auto-sampling during sleep). Each mode reduces current consumption significantly-down to 0.7 μA in STOP mode-while retaining RAM content and enabling wake-up via timer, external interrupt, or ADC completion.