Renesas UPD78F1211MC-GAA-AX

Overview

UPD78F1211MC-GAA-AX from Renesas Electronics is a 16-bit single-chip microcontroller in the 78K0R/IC3 family, featuring 128 KB on-chip Flash memory, 8 KB RAM, and a maximum operating frequency of 20 MHz. It integrates a 10-bit ADC (16 channels), UART, I²C, and 16-bit timer arrays, targeting embedded control in industrial equipment and consumer appliances.

For engineers reviewing the UPD78F1211MC-GAA-AX datasheet, UPD78F1211MC-GAA-AX pinout, UPD78F1211MC-GAA-AX application, or UPD78F1211MC-GAA-AX equivalent, key selection criteria include Flash endurance (100,000 write/erase cycles), operating voltage range (2.7–5.5 V), and support for low-power STOP and SNOOZE modes in resource-constrained real-time control systems.

Technical Context

The UPD78F1211MC-GAA-AX implements the 78K0R CPU core with 16-bit architecture, Harvard memory organization, and instruction set compatible with earlier 78K0 devices. It supports interrupt nesting up to 8 levels and includes a watchdog timer with independent clock source.

On-chip peripherals include a 16-bit multifunction timer array unit (TAU) with capture/compare/PWM functions, a serial interface controller supporting UART/I²C/SPI modes, and a 10-bit successive approximation ADC with programmable sampling time and conversion trigger sources including timer overflows and external pins.

Key Specifications

Pinout & Package

UPD78F1211MC-GAA-AX is housed in a 100-pin LQFP package (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignments are defined per the 78K0R/IC3 group specification and validated for this exact part number.

Key Features

Applications

Equivalent & Alternatives

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

Compared with UPD78F1211MC-GAA-AX, R5F100LEAFB#30 offers enhanced automotive interface integration but reduced analog subsystem capability, while MB95560PFT-G-SNE1 delivers superior real-time processing headroom at the expense of board space and BOM cost - making UPD78F1211MC-GAA-AX optimal for cost-sensitive industrial controls requiring balanced mixed-signal performance.

Availability

UPD78F1211MC-GAA-AX is available at Aetrix Electronics and suitable for industrial motor control, home appliance UI panels, smart power metering, and factory automation sensor nodes requiring stable component supply across long production lifecycles.

Supply support for UPD78F1211MC-GAA-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 formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power solutions.

The 78K0R/IC3 product line, including UPD78F1211MC-GAA-AX, was designed for cost-effective, low-power embedded control in industrial and consumer equipment where Flash endurance and mixed-signal integration are critical.

FAQ

What is the maximum operating frequency of the UPD78F1211MC-GAA-AX?

The UPD78F1211MC-GAA-AX operates at a maximum frequency of 20 MHz across its full 2.7–5.5 V supply range. This frequency is achieved using the on-chip high-speed system clock derived from the main crystal oscillator or internal high-speed RC oscillator. The UPD78F1211MC-GAA-AX maintains timing compliance under worst-case voltage and temperature conditions as specified in Renesas' electrical characteristics table.

Does the UPD78F1211MC-GAA-AX support in-system programming via standard interfaces?

Yes, the UPD78F1211MC-GAA-AX supports in-system programming using the on-chip bootloader activated by pulling FLMD0 low at reset. Programming is performed via UART using Renesas' standard flash programming protocol. No external programmer is required for field firmware updates, though the UPD78F1211MC-GAA-AX does not support SWD or JTAG debug interfaces.

What are the ADC reference options available on the UPD78F1211MC-GAA-AX?

The UPD78F1211MC-GAA-AX supports three ADC reference configurations: external reference applied to AVREF pin (1.5–5.5 V), internal 2.5 V bandgap reference, or VDD as reference. Selection is controlled by the ADPC register bits. Using AVREF decouples ADC accuracy from supply rail fluctuations, which is essential for precision sensor interfacing in the UPD78F1211MC-GAA-AX.

How many I/O ports does the UPD78F1211MC-GAA-AX provide, and what are their voltage tolerances?

The UPD78F1211MC-GAA-AX provides 85 programmable CMOS I/O pins across Ports 0–8 and 12–15. All GPIO pins are 5 V tolerant when configured as inputs, even when VDD is 3.3 V - enabling direct interfacing with legacy 5 V peripherals without level shifters. Output drive strength is configurable per port in the UPD78F1211MC-GAA-AX's port control registers.

Is the UPD78F1211MC-GAA-AX qualified for industrial temperature operation?

Yes, the UPD78F1211MC-GAA-AX is rated for operation from −40 °C to +85 °C and classified as a "Standard" quality grade device per Renesas' documentation. It meets industrial environmental requirements for storage, thermal shock, and humidity testing, and is suitable for deployment in factory automation, HVAC, and commercial appliance applications where the UPD78F1211MC-GAA-AX operates reliably under continuous thermal cycling.