Renesas UPD78F0592GA-GAM-AX

Overview

UPD78F0592GA-GAM-AX from Renesas Electronics is an 8-bit single-chip microcontroller in the 78K0/KC2-A family, featuring 64 KB on-chip Flash memory, 4 KB RAM, and a 20 MHz max CPU clock. It integrates 10-bit ADC (8 channels), UART, I²C, and 16-bit timer arrays, and operates from 2.7 V to 5.5 V. It targets embedded control in industrial sensors and motor-driven appliances.

For engineers reviewing the UPD78F0592GA-GAM-AX datasheet, UPD78F0592GA-GAM-AX pinout, UPD78F0592GA-GAM-AX application, or UPD78F0592GA-GAM-AX equivalent, key selection criteria include Flash endurance (100k write/erase cycles), operating temperature range (−40°C to +85°C), and support for low-power STOP mode with RTC wake-up capability.

Technical Context

The UPD78F0592GA-GAM-AX implements the 78K0S CPU core with 16-bit addressing and 131 instructions, supporting both register and direct memory addressing modes. It includes dual clock domains: main system clock (X1/XT1/internal oscillators) and subsystem clock for low-power peripherals like RTC and watchdog.

Its peripheral set is tightly coupled to the CPU via dedicated interrupt vectors and SFR-mapped registers - including 8-channel 10-bit ADC with scan mode, three 16-bit reload timers with capture/compare, and full-duplex UART with framing error detection. All I/O ports support CMOS-level input thresholds and configurable pull-up resistors.

Key Specifications

Pinout & Package

UPD78F0592GA-GAM-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.3.00 (Jun 2011), Section 1.4.2 and 2.1.2.

Key Features

Applications

Equivalent & Alternatives

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

Compared with UPD78F0592GA-GAM-AX, R5F100LEAFB#30 offers superior active power efficiency but requires external clocking and has less Flash; UPD78F0537GA-GAM-AX shares identical packaging and peripherals but halves Flash capacity - making it a drop-in alternative only if code size permits.

Availability

UPD78F0592GA-GAM-AX is available at Aetrix Electronics and suitable for industrial sensor nodes, smart appliance control, and building automation panels requiring stable component supply and long-term lifecycle support.

Supply support for UPD78F0592GA-GAM-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 enterprise markets.

The 78K0/KC2-A product line delivers cost-optimized 8-bit MCUs targeting resource-constrained embedded control applications requiring robust peripheral integration, low-power operation, and industrial temperature tolerance.

FAQ

What is the maximum operating frequency of the UPD78F0592GA-GAM-AX?

The UPD78F0592GA-GAM-AX supports a maximum CPU clock frequency of 20 MHz when using the on-chip high-speed oscillator or external crystal (X1). At this speed, instruction execution time is 0.05 μs per basic instruction cycle. The device also supports slower clock sources - including internal low-speed oscillator (15 kHz) - for ultra-low-power STOP mode operation. All timing specifications in the Renesas Hardware User's Manual Rev.3.00 assume VDD ≥ 4.5 V at 20 MHz.

Does the UPD78F0592GA-GAM-AX include hardware debug support?

Yes, the UPD78F0592GA-GAM-AX integrates a single-wire on-chip debug interface accessible via the BKGD pin. This allows full breakpoint, step-through, and register inspection capabilities using Renesas QB-MINI2 or compatible emulators. Debug functionality remains active even during STOP mode, provided the REGC pin is asserted and the debug clock is supplied. No external debug header or additional pins are required beyond the standard 64-pin LQFP footprint.

What ADC resolution and channel count does the UPD78F0592GA-GAM-AX support?

The UPD78F0592GA-GAM-AX features a 10-bit successive approximation ADC with 8 input channels (AN0–AN7), mapped directly to P20–P27. Conversion time is 12.5 μs per sample at 1 MHz ADC clock. The ADC supports software-triggered and timer-triggered modes, plus auto-scan across selected channels without CPU involvement. Reference voltage can be internally derived (VDD) or externally applied via AVREFP/AVREFM pins for improved precision.

Is the UPD78F0592GA-GAM-AX pin-compatible with other 78K0/KC2-A devices?

Yes, the UPD78F0592GA-GAM-AX shares identical pin configuration and electrical characteristics with other 64-pin 78K0/KC2-A variants including UPD78F0593GA-GAM-AX and UPD78F0537GA-GAM-AX. All share the same LQFP-64 package outline, power pin placement, and peripheral pin mapping - enabling PCB reuse across firmware variants. However, Flash size and certain SFR default values differ, so software initialization must match the specific part's memory map.

What power supply requirements does the UPD78F0592GA-GAM-AX have?

The UPD78F0592GA-GAM-AX operates from a single 2.7 V to 5.5 V supply on VDD, with separate analog supply pins (AVDD/AVSS) that must be connected to the same VDD/VSS net unless external analog references are used. Decoupling capacitors (0.1 μF ceramic + 10 μF tantalum) are required per VDD–VSS pair, placed within 5 mm of each pin. The internal voltage regulator (enabled via REGC) supplies core logic during STOP mode, reducing total current to ≤1.2 μA.