Renesas UPD78F1502AGK-GAK-X3-AX

Overview

UPD78F1502AGK-GAK-X3-AX from Renesas Electronics is a 16-bit single-chip microcontroller in the 78K0R/Lx3 family, featuring 128 KB on-chip Flash memory, 8 KB RAM, and integrated 10-bit ADC with 24 channels. It operates at up to 20 MHz, supports I²C, UART, and CSI interfaces, and targets embedded control in industrial sensors and motor drive subsystems.

For engineers reviewing the UPD78F1502AGK-GAK-X3-AX datasheet, UPD78F1502AGK-GAK-X3-AX pinout, UPD78F1502AGK-GAK-X3-AX application, or UPD78F1502AGK-GAK-X3-AX equivalent, key selection criteria include Flash endurance (100k write/erase cycles), operating voltage range (2.7–5.5 V), and support for low-power stop modes with RTC wake-up capability.

Technical Context

The UPD78F1502AGK-GAK-X3-AX implements the 78K0R CPU core with 16-bit architecture, Harvard memory organization, and instruction set compatible with earlier 78K0 devices. It integrates a programmable 8-bit watchdog timer, 16-bit multifunction timer array (TAA) with PWM output, and a 10-bit ADC with sample-and-hold and scan conversion mode.

Its peripheral set includes three serial interface modules (UART0/1, I²C, CSI), a real-time clock (RTC) with calendar function, and on-chip voltage regulator for internal logic supply. The device supports four power-saving modes: HALT, STOP, SNOOZE, and IDLE - with wake-up sources including external interrupts, RTC alarm, and serial receive events.

Key Specifications

Pinout & Package

The UPD78F1502AGK-GAK-X3-AX is housed in a 64-pin LQFP package (10 mm × 10 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per Renesas Hardware User's Manual Rev.5.01 (Jun 2011), Section 1.3.1 and 2.1.1 for the 78K0R/LF3 group.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100LEAFB#30 and UPD78F1501AGK-GAK-X3-AX, the UPD78F1502AGK-GAK-X3-AX uniquely combines full RTC calendar functionality, 128 KB Flash for complex firmware, and industrial-grade LQFP packaging - making it optimal for time-aware, sensor-rich embedded systems requiring long-term field updateability.

Availability

UPD78F1502AGK-GAK-X3-AX is available at Aetrix Electronics and suitable for industrial sensor nodes, motor drive subsystems, and smart metering interfaces requiring stable component supply across multi-year production cycles.

Supply support for UPD78F1502AGK-GAK-X3-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 manufacturer headquartered in Japan, specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The UPD78F1502AGK-GAK-X3-AX belongs to the 78K0R/LF3 product line, designed specifically for cost-sensitive, high-reliability embedded control applications demanding robust analog integration, low-power operation, and long-lifecycle support.

FAQ

What is the maximum operating frequency of the UPD78F1502AGK-GAK-X3-AX?

The UPD78F1502AGK-GAK-X3-AX supports a maximum system clock frequency of 20 MHz when using the on-chip PLL. Without PLL, the maximum frequency is 16 MHz using the main system clock. This timing specification is confirmed in Section 1.1 and electrical characteristics tables of the Renesas 78K0R/Lx3 Hardware User's Manual Rev.5.01. The UPD78F1502AGK-GAK-X3-AX maintains full peripheral functionality across this range, including ADC sampling and UART baud rate generation.

Does the UPD78F1502AGK-GAK-X3-AX include an integrated real-time clock (RTC)?

Yes, the UPD78F1502AGK-GAK-X3-AX integrates a full-featured RTC with calendar function (year/month/day/hour/minute/second), alarm capability, and 32.768 kHz crystal oscillator support. As documented in Section 1.5 and Chapter 5 of the Hardware User's Manual, the RTC remains operational in STOP mode with typical current consumption of 0.9 µA - enabling time-stamped event logging without external components. The UPD78F1502AGK-GAK-X3-AX RTC does not require external capacitors for standard crystal configurations.

What is the Flash memory endurance rating for the UPD78F1502AGK-GAK-X3-AX?

The UPD78F1502AGK-GAK-X3-AX specifies 100,000 write/erase cycles for its 128 KB on-chip Flash memory, as stated in the "Electrical Characteristics" section of the Renesas 78K0R/Lx3 Hardware User's Manual Rev.5.01. This endurance enables reliable field firmware updates and data logging in applications such as industrial controllers and sensor nodes. The UPD78F1502AGK-GAK-X3-AX also supports in-application programming (IAP), allowing code execution from RAM while rewriting Flash sectors.

Which development tools are officially supported for the UPD78F1502AGK-GAK-X3-AX?

Renesas officially supports the QB-MINI2 on-chip debug emulator and the PG-FP5 Flash memory programmer for the UPD78F1502AGK-GAK-X3-AX, as listed in the "Documents Related to Development Tools" section of the Hardware User's Manual. The RA78K0R assembler and CC78K0R C compiler (Ver. 2.00) are qualified toolchains. These tools enable full debugging, flash programming, and real-time trace for the UPD78F1502AGK-GAK-X3-AX - ensuring compatibility with production programming workflows.

Is the UPD78F1502AGK-GAK-X3-AX pin-compatible with other devices in the 78K0R/LF3 family?

Yes, the UPD78F1502AGK-GAK-X3-AX shares identical pin configuration and electrical characteristics with other 78K0R/LF3 members including UPD78F1500A, UPD78F1501A, and UPD78F1510A in the 64-pin LQFP package, as confirmed in Section 1.3.1 ("78K0R/LF3") of the Hardware User's Manual. This allows direct PCB reuse across variants. The UPD78F1502AGK-GAK-X3-AX maintains functional pin equivalence for all power, reset, clock, and peripheral I/O signals - simplifying design migration and inventory consolidation.