Renesas UPD78F0512AGA-GAM-AX

Overview

UPD78F0512AGA-GAM-AX from Renesas Electronics is an 8-bit single-chip microcontroller in the 78K0/KC2 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 CPU clock frequency using an internal high-speed oscillator or external crystal (1–20 MHz), supports 5V operation, and integrates UART, I²C, and 10-bit ADC (8 channels). It is used in industrial control panels requiring deterministic real-time response and firmware-upgradable logic.

For engineers reviewing the UPD78F0512AGA-GAM-AX datasheet, UPD78F0512AGA-GAM-AX pinout, UPD78F0512AGA-GAM-AX application, or UPD78F0512AGA-GAM-AX equivalent, key selection criteria include flash endurance (100,000 erase/write cycles), A/D conversion time (≤1.6 μs per channel), interrupt latency (≤3.5 μs), and support for self-programming via on-chip library - all critical for embedded firmware maintenance and sensor-based control loops.

Technical Context

The UPD78F0512AGA-GAM-AX implements the 78K0 CPU core with 16-bit address space, supporting 131 instructions including bit manipulation and multi-byte arithmetic. Its peripheral set includes three 16-bit timers (one with input capture/output compare), one watchdog timer, and a serial interface capable of UART or I²C mode with programmable baud rate generation.

It uses a dual-voltage supply architecture: EVDD/EVSS for analog peripherals (ADC, voltage reference) and VDD/VSS for digital logic, enabling noise-isolated mixed-signal operation. The device supports two power-saving modes - HALT and STOP - with wake-up via external interrupt or timer event, suitable for battery-backed monitoring applications.

Key Specifications

Pinout & Package

UPD78F0512AGA-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 User's Manual Rev.4.01, Section 2.1.2 (78K0/KC2).

Key Features

Applications

Equivalent & Alternatives

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

Compared with UPD78F0512AGA-GAM-AX, R5F100PLAFB#30 offers superior low-power performance but sacrifices PWM timing precision and flash capacity, while UPD78F0513AGA-GAM-AX delivers seamless scalability within the same hardware design envelope.

Availability

UPD78F0512AGA-GAM-AX is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, PLC I/O modules, and appliance control boards requiring stable component supply across multi-year production cycles.

Supply support for UPD78F0512AGA-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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power devices for industrial, automotive, and infrastructure markets.

The 78K0/KC2 product line delivers cost-optimized 8-bit MCUs targeting deterministic real-time control in factory automation, building systems, and white goods - emphasizing flash reliability, mixed-signal integration, and long-term supply stability.

FAQ

What is the maximum operating frequency of the UPD78F0512AGA-GAM-AX?

The UPD78F0512AGA-GAM-AX supports a maximum CPU clock frequency of 20 MHz, achievable using either the internal high-speed oscillator or an external crystal (1–20 MHz range). At this speed, its instruction cycle time is 50 ns, enabling sub-microsecond interrupt response and tight timing loops essential for motor control and sensor sampling. This specification is confirmed in Renesas User's Manual Rev.4.01, Section 1.1.3.

Does the UPD78F0512AGA-GAM-AX support in-system programming (ISP)?

Yes, the UPD78F0512AGA-GAM-AX supports in-system programming via its on-chip self-programming library, allowing firmware updates through UART or I²C without removing the device from the board. The library requires no external high-voltage supply and guarantees 100,000 erase/write cycles with 20-year data retention - verified in Renesas Application Note U17516E and User's Manual Section 1.1.4.

What are the power supply requirements for the UPD78F0512AGA-GAM-AX analog section?

The UPD78F0512AGA-GAM-AX requires separate analog and digital supplies: EVDD/EVSS (2.7–5.5 V) for the ADC and voltage reference, and VDD/VSS (4.0–5.5 V) for the core and I/O. This dual-domain architecture minimizes digital noise coupling into analog measurements - a requirement explicitly defined in Renesas User's Manual Section 2.2.12 and electrical specifications table.

How many ADC input channels does the UPD78F0512AGA-GAM-AX provide?

The UPD78F0512AGA-GAM-AX integrates a 10-bit successive-approximation ADC with eight configurable input channels (AN0–AN7), mapped to Port 1 pins P10–P17. Conversion time is ≤1.6 μs per channel, and the ADC supports both single-shot and continuous scan modes - details confirmed in Renesas User's Manual Rev.4.01, Section 1.2 and Table 2.1.2.

Is the UPD78F0512AGA-GAM-AX pin-compatible with other 78K0/KC2 devices?

Yes, the UPD78F0512AGA-GAM-AX shares the same 64-pin LQFP package and pin assignment with other 78K0/KC2 family members including UPD78F0511AGA-GAM-AX and UPD78F0513AGA-GAM-AX, as documented in Renesas User's Manual Section 2.1.2. This allows hardware reuse across variants differing only in flash size (64 KB vs. 48 KB vs. 96 KB) and minor AC characteristics.